System.Data.SQLite
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Overview
Comment:Update SQLite core library to the latest trunk code.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1:356e9a22b63832940a93d7632e3562d1ffec967c
User & Date: mistachkin 2018-01-11 20:44:25
Context
2018-01-12
19:37
Add some pointer/offset alignment checking to the managed virtual table subsystem. check-in: 0621d7037c user: mistachkin tags: trunk
2018-01-11
20:44
Update SQLite core library to the latest trunk code. check-in: 356e9a22b6 user: mistachkin tags: trunk
2018-01-04
19:03
Stress test variable cleanup tweak. check-in: a7962f9e97 user: mistachkin tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to SQLite.Interop/props/sqlite3.props.

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 *
 * Written by Joe Mistachkin.
 * Released to the public domain, use at your own risk!
 *
-->
<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="4.0">
  <PropertyGroup Label="UserMacros">
    <SQLITE_MANIFEST_VERSION>3.20.1.0</SQLITE_MANIFEST_VERSION>
    <SQLITE_RC_VERSION>3,20,1,0</SQLITE_RC_VERSION>
    <SQLITE_COMMON_DEFINES>_CRT_SECURE_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;SQLITE_THREADSAFE=1;SQLITE_USE_URI=1;SQLITE_ENABLE_COLUMN_METADATA=1;SQLITE_ENABLE_STAT4=1;SQLITE_ENABLE_FTS3=1;SQLITE_ENABLE_LOAD_EXTENSION=1;SQLITE_ENABLE_RTREE=1;SQLITE_SOUNDEX=1;SQLITE_ENABLE_MEMORY_MANAGEMENT=1;SQLITE_ENABLE_API_ARMOR=1;SQLITE_ENABLE_DBSTAT_VTAB=1;SQLITE_ENABLE_STMTVTAB=1</SQLITE_COMMON_DEFINES>
    <SQLITE_EXTRA_DEFINES>SQLITE_PLACEHOLDER=1;SQLITE_HAS_CODEC=1</SQLITE_EXTRA_DEFINES>
    <SQLITE_WINCE_200X_DEFINES>SQLITE_OMIT_WAL=1</SQLITE_WINCE_200X_DEFINES>
    <SQLITE_WINCE_2013_DEFINES>HAVE_ERRNO_H=1;SQLITE_MSVC_LOCALTIME_API=1</SQLITE_WINCE_2013_DEFINES>
    <SQLITE_DEBUG_DEFINES>SQLITE_DEBUG=1;SQLITE_MEMDEBUG=1;SQLITE_ENABLE_EXPENSIVE_ASSERT=1</SQLITE_DEBUG_DEFINES>
    <SQLITE_RELEASE_DEFINES>SQLITE_WIN32_MALLOC=1</SQLITE_RELEASE_DEFINES>
    <SQLITE_DISABLE_WARNINGS>4055;4100;4127;4146;4210;4232;4244;4245;4267;4306;4389;4701;4703;4706</SQLITE_DISABLE_WARNINGS>







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 *
 * Written by Joe Mistachkin.
 * Released to the public domain, use at your own risk!
 *
-->
<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="4.0">
  <PropertyGroup Label="UserMacros">
    <SQLITE_MANIFEST_VERSION>3.22.0.0</SQLITE_MANIFEST_VERSION>
    <SQLITE_RC_VERSION>3,22,0,0</SQLITE_RC_VERSION>
    <SQLITE_COMMON_DEFINES>_CRT_SECURE_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;SQLITE_THREADSAFE=1;SQLITE_USE_URI=1;SQLITE_ENABLE_COLUMN_METADATA=1;SQLITE_ENABLE_STAT4=1;SQLITE_ENABLE_FTS3=1;SQLITE_ENABLE_LOAD_EXTENSION=1;SQLITE_ENABLE_RTREE=1;SQLITE_SOUNDEX=1;SQLITE_ENABLE_MEMORY_MANAGEMENT=1;SQLITE_ENABLE_API_ARMOR=1;SQLITE_ENABLE_DBSTAT_VTAB=1;SQLITE_ENABLE_STMTVTAB=1</SQLITE_COMMON_DEFINES>
    <SQLITE_EXTRA_DEFINES>SQLITE_PLACEHOLDER=1;SQLITE_HAS_CODEC=1</SQLITE_EXTRA_DEFINES>
    <SQLITE_WINCE_200X_DEFINES>SQLITE_OMIT_WAL=1</SQLITE_WINCE_200X_DEFINES>
    <SQLITE_WINCE_2013_DEFINES>HAVE_ERRNO_H=1;SQLITE_MSVC_LOCALTIME_API=1</SQLITE_WINCE_2013_DEFINES>
    <SQLITE_DEBUG_DEFINES>SQLITE_DEBUG=1;SQLITE_MEMDEBUG=1;SQLITE_ENABLE_EXPENSIVE_ASSERT=1</SQLITE_DEBUG_DEFINES>
    <SQLITE_RELEASE_DEFINES>SQLITE_WIN32_MALLOC=1</SQLITE_RELEASE_DEFINES>
    <SQLITE_DISABLE_WARNINGS>4055;4100;4127;4146;4210;4232;4244;4245;4267;4306;4389;4701;4703;4706</SQLITE_DISABLE_WARNINGS>

Changes to SQLite.Interop/props/sqlite3.vsprops.

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<VisualStudioPropertySheet
	ProjectType="Visual C++"
	Version="8.00"
	Name="sqlite3"
	>
	<UserMacro
		Name="SQLITE_MANIFEST_VERSION"
		Value="3.20.1.0"
		PerformEnvironmentSet="true"
	/>
	<UserMacro
		Name="SQLITE_RC_VERSION"
		Value="3,20,1,0"
		PerformEnvironmentSet="true"
	/>
	<UserMacro
		Name="SQLITE_COMMON_DEFINES"
		Value="_CRT_SECURE_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;SQLITE_THREADSAFE=1;SQLITE_USE_URI=1;SQLITE_ENABLE_COLUMN_METADATA=1;SQLITE_ENABLE_STAT4=1;SQLITE_ENABLE_FTS3=1;SQLITE_ENABLE_LOAD_EXTENSION=1;SQLITE_ENABLE_RTREE=1;SQLITE_SOUNDEX=1;SQLITE_ENABLE_MEMORY_MANAGEMENT=1;SQLITE_ENABLE_API_ARMOR=1;SQLITE_ENABLE_DBSTAT_VTAB=1;SQLITE_ENABLE_STMTVTAB=1"
		PerformEnvironmentSet="true"
	/>







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<VisualStudioPropertySheet
	ProjectType="Visual C++"
	Version="8.00"
	Name="sqlite3"
	>
	<UserMacro
		Name="SQLITE_MANIFEST_VERSION"
		Value="3.22.0.0"
		PerformEnvironmentSet="true"
	/>
	<UserMacro
		Name="SQLITE_RC_VERSION"
		Value="3,22,0,0"
		PerformEnvironmentSet="true"
	/>
	<UserMacro
		Name="SQLITE_COMMON_DEFINES"
		Value="_CRT_SECURE_NO_DEPRECATE;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;SQLITE_THREADSAFE=1;SQLITE_USE_URI=1;SQLITE_ENABLE_COLUMN_METADATA=1;SQLITE_ENABLE_STAT4=1;SQLITE_ENABLE_FTS3=1;SQLITE_ENABLE_LOAD_EXTENSION=1;SQLITE_ENABLE_RTREE=1;SQLITE_SOUNDEX=1;SQLITE_ENABLE_MEMORY_MANAGEMENT=1;SQLITE_ENABLE_API_ARMOR=1;SQLITE_ENABLE_DBSTAT_VTAB=1;SQLITE_ENABLE_STMTVTAB=1"
		PerformEnvironmentSet="true"
	/>

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42380
42381
42382
42383
42384





42385
42386
42387
42388
42389
42390
42391
.....
42423
42424
42425
42426
42427
42428
42429





42430
42431
42432
42433
42434
42435
42436
42437
42438
42439
42440
42441
42442
42443
42444
42445
42446
42447
42448
42449
42450
42451
42452
42453
42454
42455
42456
42457
42458
42459
42460
42461
42462
42463
42464
42465
42466
.....
42483
42484
42485
42486
42487
42488
42489

42490
42491
42492
42493
42494
42495
42496
.....
45252
45253
45254
45255
45256
45257
45258
45259
45260
45261
45262
45263
45264
45265
45266
45267
45268
45269
45270
45271
45272
45273
45274
45275
.....
53054
53055
53056
53057
53058
53059
53060
53061
53062
53063
53064
53065
53066
53067
53068
.....
55241
55242
55243
55244
55245
55246
55247




55248
55249
55250
55251
55252
55253
55254
.....
55381
55382
55383
55384
55385
55386
55387
55388
55389
55390









55391
55392
55393
55394
55395
55396
55397
.....
55507
55508
55509
55510
55511
55512
55513
55514
55515
55516
55517
55518
55519
55520
55521
.....
55553
55554
55555
55556
55557
55558
55559

55560
55561
55562
55563
55564
55565
55566
.....
55641
55642
55643
55644
55645
55646
55647





55648
55649
55650
55651
55652
55653
55654
.....
55673
55674
55675
55676
55677
55678
55679


55680
55681

55682

55683
55684
55685
55686
55687
55688
55689
.....
56197
56198
56199
56200
56201
56202
56203
56204
56205
56206
56207
56208
56209
56210
56211
56212
56213
56214
56215
56216
56217
56218






56219
56220
56221

56222
56223
56224
56225
56226
56227
56228
.....
56352
56353
56354
56355
56356
56357
56358
56359

56360
56361
56362
56363
56364
56365
56366
56367
56368
56369
56370
56371
56372
56373

56374
56375
56376
56377
56378
56379
56380
.....
57159
57160
57161
57162
57163
57164
57165






57166
57167
57168
57169
57170
57171
57172
.....
57182
57183
57184
57185
57186
57187
57188
57189
57190








57191













57192
57193
57194
57195
57196
57197
57198
57199
57200
57201
57202
57203
57204
57205
57206
57207
57208
57209
57210
57211
57212
.....
57228
57229
57230
57231
57232
57233
57234









57235



57236
57237
57238
57239
57240
57241

























57242
























































































57243























































57244
57245
57246
57247
57248
57249
57250
.....
57252
57253
57254
57255
57256
57257
57258
57259
57260
57261
57262
57263
57264
57265
57266
.....
57298
57299
57300
57301
57302
57303
57304



57305
57306
57307
57308
57309
57310
57311
.....
57326
57327
57328
57329
57330
57331
57332


57333

57334
57335
57336
57337
57338
57339
57340
.....
57355
57356
57357
57358
57359
57360
57361


57362
57363



57364
57365
57366
57367
57368
57369
57370
57371
57372
57373
57374
57375
.....
57432
57433
57434
57435
57436
57437
57438
57439
57440
57441
57442
57443
57444
57445
57446
.....
57704
57705
57706
57707
57708
57709
57710
57711
57712
57713
57714
57715
57716
57717
57718
.....
57767
57768
57769
57770
57771
57772
57773
57774
57775
57776
57777
57778
57779
57780
57781
57782
.....
58544
58545
58546
58547
58548
58549
58550
58551
58552
58553
58554
58555
58556
58557
58558
58559
58560
58561
58562
58563
58564
58565
58566
58567
58568
58569
58570
58571
58572
58573
58574
58575
.....
59781
59782
59783
59784
59785
59786
59787

























59788
59789
59790
59791
59792
59793
59794
.....
61069
61070
61071
61072
61073
61074
61075
61076
61077
61078
61079
61080
61081
61082
61083
.....
61103
61104
61105
61106
61107
61108
61109
61110
61111
61112
61113
61114
61115
61116
61117
61118
61119
61120
61121
61122
61123
.....
61129
61130
61131
61132
61133
61134
61135
61136
61137
61138
61139
61140
61141
61142
61143
.....
61173
61174
61175
61176
61177
61178
61179
61180
61181
61182
61183
61184
61185
61186
61187
.....
61196
61197
61198
61199
61200
61201
61202
61203
61204
61205
61206
61207
61208
61209
61210
.....
61244
61245
61246
61247
61248
61249
61250
61251
61252
61253
61254
61255
61256
61257
61258
.....
61334
61335
61336
61337
61338
61339
61340
61341
61342
61343
61344
61345
61346
61347
61348
61349
61350
61351
61352
61353
61354
61355
61356
61357
61358
61359
61360
61361
61362
61363
61364
61365
61366
61367
61368
61369
61370
61371
61372
61373
61374
61375
61376
61377
61378
61379
61380
61381
61382
61383
61384
61385
61386
61387
61388
61389
61390
61391
61392
61393
61394
61395
.....
61454
61455
61456
61457
61458
61459
61460
61461
61462
61463
61464
61465
61466
61467
61468
.....
61495
61496
61497
61498
61499
61500
61501
61502
61503
61504
61505
61506
61507
61508
61509
.....
61514
61515
61516
61517
61518
61519
61520
61521
61522
61523
61524
61525
61526
61527
61528
.....
61542
61543
61544
61545
61546
61547
61548
61549
61550
61551
61552
61553
61554
61555
61556
61557
61558
61559
61560
61561
.....
61565
61566
61567
61568
61569
61570
61571
61572
61573
61574
61575
61576
61577
61578
61579
61580
61581
61582
61583
61584
61585
61586
61587
61588
61589
61590
61591
61592
61593
61594
61595
61596
61597
61598
61599
61600
61601
61602
61603
61604
61605
61606
61607
61608
61609
61610
.....
63127
63128
63129
63130
63131
63132
63133
63134
63135
63136
63137
63138
63139
63140
63141
.....
63146
63147
63148
63149
63150
63151
63152
63153
63154
63155
63156
63157
63158
63159
63160
.....
63164
63165
63166
63167
63168
63169
63170
63171
63172
63173
63174
63175
63176
63177
63178
.....
64076
64077
64078
64079
64080
64081
64082














64083
64084
64085
64086
64087
64088
64089
.....
64262
64263
64264
64265
64266
64267
64268
64269
64270
64271
64272
64273
64274
64275
64276
.....
64410
64411
64412
64413
64414
64415
64416
64417
64418
64419
64420
64421
64422
64423
64424
.....
64688
64689
64690
64691
64692
64693
64694
64695
64696
64697
64698
64699
64700
64701
64702
.....
64961
64962
64963
64964
64965
64966
64967
64968
64969
64970
64971
64972
64973
64974
64975
.....
65035
65036
65037
65038
65039
65040
65041
65042
65043
65044
65045
65046
65047
65048
65049
.....
65838
65839
65840
65841
65842
65843
65844
65845
65846
65847
65848
65849
65850
65851
65852
.....
70764
70765
70766
70767
70768
70769
70770
70771
70772
70773
70774


70775
70776
70777
70778
70779
70780
70781
70782
70783
70784
70785
70786
70787
70788
70789
70790
70791
70792
70793
70794
70795
70796
70797
.....
71737
71738
71739
71740
71741
71742
71743



71744

71745
71746
71747
71748
71749
71750
71751
.....
71832
71833
71834
71835
71836
71837
71838



71839
71840
71841
71842
71843
71844
71845
71846
.....
73818
73819
73820
73821
73822
73823
73824


73825
73826
73827
73828
73829
73830
73831
73832
73833
73834
73835
73836
73837
73838
73839
73840
73841
73842
73843
73844
.....
73845
73846
73847
73848
73849
73850
73851
73852
73853
73854
73855
73856
73857
73858
73859
.....
73865
73866
73867
73868
73869
73870
73871
73872
73873
73874
73875
73876
73877
73878
73879
73880
73881
73882


73883
73884
73885
73886
73887
73888
73889
.....
73890
73891
73892
73893
73894
73895
73896
73897
73898
73899
73900
73901
73902
73903
73904
73905
73906
73907
73908
73909
73910
73911
73912
73913
73914
73915
73916
73917
73918
73919

73920




73921
73922
73923
73924

73925
73926

73927











73928








73929
73930
73931
73932
73933
73934
73935
73936
73937
73938
73939
73940
73941
73942
73943
73944
73945
73946
73947
73948
73949
73950
73951
73952
73953
73954
73955
73956
73957
73958
73959
73960
73961
73962
73963
73964
73965
73966
73967
73968
73969
73970
73971
73972
73973
73974
73975
73976
73977
73978
73979
73980
73981
73982
73983
73984

73985
73986
73987
73988
73989
73990
73991
.....
74447
74448
74449
74450
74451
74452
74453

74454
74455
74456
74457
74458
74459
74460
.....
75222
75223
75224
75225
75226
75227
75228
75229
75230
75231
75232
75233
75234
75235
75236
.....
77647
77648
77649
77650
77651
77652
77653



















77654
77655
77656
77657
77658
77659
77660
.....
81503
81504
81505
81506
81507
81508
81509






























81510
81511
81512
81513
81514
81515
81516
.....
85817
85818
85819
85820
85821
85822
85823
85824
85825
85826
85827
85828
85829






85830
85831
85832
85833
85834
85835
85836
.....
85844
85845
85846
85847
85848
85849
85850

85851
85852
85853
85854
85855
85856
85857
.....
86170
86171
86172
86173
86174
86175
86176
86177







86178
86179
86180
86181
86182
86183
86184
.....
86189
86190
86191
86192
86193
86194
86195

86196
86197
86198
86199
86200
86201
86202
.....
86203
86204
86205
86206
86207
86208
86209

86210

86211
86212
86213
86214
86215
86216
86217
.....
86246
86247
86248
86249
86250
86251
86252

86253
86254
86255
86256
86257
86258
86259
.....
90190
90191
90192
90193
90194
90195
90196
90197
90198
90199
90200
90201
90202
90203
90204
.....
90207
90208
90209
90210
90211
90212
90213
90214
90215
90216
90217
90218
90219
90220
90221
90222
90223
90224
90225
90226
90227
90228
90229
90230
.....
90859
90860
90861
90862
90863
90864
90865
90866

90867
90868
90869
90870
90871
90872
90873
.....
91458
91459
91460
91461
91462
91463
91464
91465
91466
91467
91468
91469
91470
91471
91472
91473
.....
92460
92461
92462
92463
92464
92465
92466
92467
92468
92469
92470
92471
92472
92473
92474
.....
92749
92750
92751
92752
92753
92754
92755

92756
92757
92758
92759
92760
92761
92762
.....
93258
93259
93260
93261
93262
93263
93264
93265
93266
93267
93268
93269
93270
93271
93272
.....
93452
93453
93454
93455
93456
93457
93458
93459

93460
93461
93462
93463
93464
93465
93466
93467
93468
93469
93470
93471
93472
93473
93474
93475
93476
.....
93895
93896
93897
93898
93899
93900
93901
93902
93903
93904
93905
93906
93907
93908
93909
.....
93985
93986
93987
93988
93989
93990
93991
93992
93993
93994
93995
93996
93997
93998
93999
94000
94001
94002
94003
94004
94005
94006
94007
94008
.....
94535
94536
94537
94538
94539
94540
94541

94542
94543
94544
94545
94546
94547
94548
.....
94556
94557
94558
94559
94560
94561
94562


94563


94564
94565

94566
94567
94568
94569
94570
94571
94572
.....
95666
95667
95668
95669
95670
95671
95672











95673
95674
95675

95676
95677
95678
95679
95680
95681
95682
......
100346
100347
100348
100349
100350
100351
100352
100353
100354
100355
100356
100357
100358
100359
100360
100361
100362
......
101915
101916
101917
101918
101919
101920
101921
101922





101923
101924
101925
101926
101927
101928
101929
101930
101931
101932
101933
101934
101935
101936
101937
101938
101939
101940
101941
101942
101943
101944
101945
101946
101947
101948
101949
101950
101951
101952
101953
101954
101955
101956
......
102659
102660
102661
102662
102663
102664
102665
102666
102667
102668
102669
102670
102671
102672
102673
102674
102675
102676
102677
102678





102679
102680
102681
102682
102683
102684
102685
......
102814
102815
102816
102817
102818
102819
102820
102821
102822
102823
102824
102825
102826
102827
102828
......
104546
104547
104548
104549
104550
104551
104552
104553
104554
104555

104556
104557
104558
104559
104560
104561
104562
......
105057
105058
105059
105060
105061
105062
105063












105064
105065
105066
105067
105068
105069
105070
......
105242
105243
105244
105245
105246
105247
105248

105249
105250
105251
105252
105253
105254
105255
......
105715
105716
105717
105718
105719
105720
105721


105722
105723
105724
105725
105726
105727
105728
......
105731
105732
105733
105734
105735
105736
105737
105738
105739
105740
105741
105742
105743
105744
105745
105746
......
105754
105755
105756
105757
105758
105759
105760
105761
105762
105763

105764
105765
105766
105767
105768
105769

105770
105771
105772
105773
105774
105775


105776
105777
105778
105779
105780
105781
105782
105783
105784
105785
105786
105787
105788
105789
105790
105791
105792
105793
105794
105795


105796
105797













105798
105799
105800







105801
105802

105803
105804
105805
105806


105807
105808
105809
105810
105811
105812

105813
105814
105815
105816
105817
105818
105819
105820
105821
105822
105823
105824
105825
105826
105827
105828
105829
105830
105831
105832
......
105833
105834
105835
105836
105837
105838
105839
105840


105841
105842
105843
105844
105845
105846
105847
......
105877
105878
105879
105880
105881
105882
105883

105884
105885
105886
105887
105888
105889
105890
......
105892
105893
105894
105895
105896
105897
105898
105899
105900
105901
105902
105903

105904
105905
105906
105907










105908
105909
105910
105911
105912
105913
105914
......
105949
105950
105951
105952
105953
105954
105955
105956


105957


105958
105959
105960
105961
105962
105963
105964
......
106194
106195
106196
106197
106198
106199
106200




106201
106202
106203
106204
106205
106206
106207
......
107235
107236
107237
107238
107239
107240
107241
107242
107243
107244
107245
107246

107247
107248

107249



107250
107251
107252
107253
107254
107255
107256
107257
107258
......
108332
108333
108334
108335
108336
108337
108338




108339
108340
108341
108342
108343
108344
108345
......
109154
109155
109156
109157
109158
109159
109160
109161
109162
109163
109164
109165
109166
109167
109168
......
109712
109713
109714
109715
109716
109717
109718
109719
109720
109721
109722
109723
109724
109725
109726
......
110762
110763
110764
110765
110766
110767
110768

110769
110770
110771
110772
110773
110774
110775
110776
......
111423
111424
111425
111426
111427
111428
111429

111430
111431
111432
111433
111434
111435
111436
......
111511
111512
111513
111514
111515
111516
111517

111518
111519
111520
111521
111522
111523
111524
......
111859
111860
111861
111862
111863
111864
111865
111866
111867
111868
111869
111870
111871
111872
111873
......
113337
113338
113339
113340
113341
113342
113343

113344

113345
113346
113347
113348
113349
113350
113351
113352
......
115374
115375
115376
115377
115378
115379
115380

115381
115382
115383
115384
115385
115386
115387
......
117257
117258
117259
117260
117261
117262
117263
117264

117265
117266
117267
117268
117269
117270
117271
......
117438
117439
117440
117441
117442
117443
117444
117445
117446
117447
117448
117449
117450
117451
117452
117453
117454
117455
117456
117457
117458

117459
117460
117461
117462
117463
117464
117465
117466
117467
117468
117469
117470
117471
117472
117473
117474
117475
117476
117477



117478
117479
117480
117481
117482
117483
117484
......
117757
117758
117759
117760
117761
117762
117763
117764
117765
117766
117767
117768
117769
117770
117771
......
117790
117791
117792
117793
117794
117795
117796
117797
117798
117799
117800
117801
117802
117803
117804
117805
......
117824
117825
117826
117827
117828
117829
117830
117831
117832
117833
117834
117835
117836
117837
117838
117839
117840
117841
......
119069
119070
119071
119072
119073
119074
119075


119076
119077
119078
119079
119080
119081
119082
119083
119084
119085
119086
119087
119088
119089
119090
119091
119092
119093
119094
......
119284
119285
119286
119287
119288
119289
119290

119291
119292
119293
119294
119295
119296
119297
......
119392
119393
119394
119395
119396
119397
119398
119399
119400
119401
119402
119403
119404

119405
119406
119407
119408
119409
119410
119411
......
119557
119558
119559
119560
119561
119562
119563
119564
119565
119566
119567
119568
119569
119570
119571
119572
119573
119574
119575
119576
119577
119578
119579
119580
119581
119582
119583
119584
119585
119586
119587
119588
119589


119590
119591
119592
119593
119594
119595
119596
119597
119598
119599
119600

119601
119602
119603
119604
119605
119606
119607
119608
119609
119610
119611
119612
119613
119614
119615
119616
119617
119618
119619
119620
119621
119622
119623
119624
119625
119626
119627
119628
119629
......
119745
119746
119747
119748
119749
119750
119751
119752
119753
119754
119755
119756
119757
119758
119759
119760
119761
119762
119763
119764
119765
119766
119767
119768
119769
119770
119771
119772
119773
......
119852
119853
119854
119855
119856
119857
119858
119859
119860
119861
119862
119863
119864
119865
119866
......
119888
119889
119890
119891
119892
119893
119894
119895
119896
119897
119898
119899
119900
119901
119902
......
120015
120016
120017
120018
120019
120020
120021
120022
120023
120024
120025
120026
120027
120028
120029
120030
120031
120032
120033
......
120041
120042
120043
120044
120045
120046
120047
120048
120049
120050
120051
120052
120053
120054
120055
......
120056
120057
120058
120059
120060
120061
120062
120063
120064
120065
120066
120067
120068
120069
120070
120071
120072
120073
120074
120075
120076
120077
120078
120079
120080
120081
120082
......
120104
120105
120106
120107
120108
120109
120110
120111
120112
120113
120114
120115
120116
120117
120118
120119
......
120121
120122
120123
120124
120125
120126
120127
120128
120129
120130
120131
120132
120133
120134
120135
......
120149
120150
120151
120152
120153
120154
120155
120156
120157
120158
120159
120160
120161
120162
120163
......
120185
120186
120187
120188
120189
120190
120191
120192
120193
120194
120195
120196
120197
120198
120199
120200
120201
120202
120203
120204
120205
120206
120207
120208
120209
120210
......
120675
120676
120677
120678
120679
120680
120681
120682
120683
120684
120685
120686
120687
120688
120689
120690
......
121066
121067
121068
121069
121070
121071
121072
121073
121074
121075
121076
121077
121078
121079
121080
121081
121082
121083
121084
121085
......
121141
121142
121143
121144
121145
121146
121147
121148
121149
121150
121151
121152
121153
121154
121155
......
121205
121206
121207
121208
121209
121210
121211



121212
121213
121214
121215
121216
121217
121218
......
121239
121240
121241
121242
121243
121244
121245
121246
121247
121248
121249
121250
121251
121252
121253
121254
121255
121256
121257
121258
121259
121260
121261
......
121295
121296
121297
121298
121299
121300
121301
121302
121303
121304
121305
121306
121307
121308
121309
121310
121311
121312
121313
121314
121315
121316
121317
121318
......
121602
121603
121604
121605
121606
121607
121608
121609
121610
121611
121612
121613
121614
121615
121616
121617
121618
121619
121620
121621
121622
121623
121624
121625
121626
121627
121628
121629
121630
121631
121632
121633
121634
121635
121636
121637
121638
121639
121640
121641
121642
121643
121644


121645
121646
121647
121648
121649
121650
121651
......
121768
121769
121770
121771
121772
121773
121774
121775
121776
121777
121778
121779
121780
121781
121782
......
122024
122025
122026
122027
122028
122029
122030

122031
122032
122033
122034
122035

122036
122037
122038
122039
122040
122041
122042
122043
......
122136
122137
122138
122139
122140
122141
122142

122143
122144
122145
122146
122147
122148
122149
......
122151
122152
122153
122154
122155
122156
122157

122158
122159
122160
122161
122162
122163
122164
......
122280
122281
122282
122283
122284
122285
122286

122287
122288
122289




122290
122291
122292
122293
122294
122295
122296
......
122818
122819
122820
122821
122822
122823
122824


122825
122826
122827
122828
122829
122830
122831
......
122904
122905
122906
122907
122908
122909
122910


122911
122912
122913
122914
122915
122916
122917
122918
122919






122920
122921
122922

122923
122924
122925
122926
122927
122928
122929
......
123334
123335
123336
123337
123338
123339
123340





123341
123342
123343
123344
123345
123346
123347
123348


















123349
123350
123351
123352
123353
123354
123355
......
123571
123572
123573
123574
123575
123576
123577
123578
123579
123580
123581
123582
123583
123584
123585
......
123633
123634
123635
123636
123637
123638
123639
123640
123641
123642
123643
123644
123645
123646
123647
123648
123649
123650
123651
123652
123653
123654
123655
123656
123657
123658
123659
123660
123661
123662
123663
123664
123665
123666
123667
123668
123669
123670
123671
123672
123673
123674
123675
123676
123677
123678
123679
123680
123681
123682
123683
123684
123685
123686
123687
123688

123689









123690

123691
123692
123693
123694
123695
123696
123697
123698
123699
123700
123701
123702
123703
123704
123705
123706
123707
123708
123709
123710
123711
123712
123713
123714
123715
123716
123717
......
123735
123736
123737
123738
123739
123740
123741
123742
123743
123744
123745
123746
123747
123748
123749
......
123975
123976
123977
123978
123979
123980
123981

123982
123983
123984
123985
123986
123987
123988
......
124289
124290
124291
124292
124293
124294
124295











124296
124297
124298
124299
124300
124301
124302
124303





124304
124305
124306
124307
124308
124309
124310
124311

124312
124313
124314
124315
124316
124317
124318
124319
124320
124321
124322
124323
124324


124325
124326
124327
124328
124329
124330
124331
124332
124333
124334

124335
124336
124337
124338
124339
124340
124341
......
124344
124345
124346
124347
124348
124349
124350
124351


124352
124353
124354
124355
124356
124357
124358
124359
124360
124361
124362
124363
124364
......
124373
124374
124375
124376
124377
124378
124379
124380


124381
124382
124383
124384
124385
124386
124387
124388
124389
124390
124391
......
124396
124397
124398
124399
124400
124401
124402
124403


124404
124405
124406
124407
124408
124409
124410
124411
124412
124413
124414
......
124654
124655
124656
124657
124658
124659
124660








124661
124662
124663
124664
124665
124666
124667
124668
124669
124670
124671
124672
124673
124674
124675
......
124677
124678
124679
124680
124681
124682
124683
124684
124685
124686
124687
124688
124689
124690
124691
......
124795
124796
124797
124798
124799
124800
124801

124802
124803
124804

124805
124806
124807
124808
124809
124810
124811
......
124825
124826
124827
124828
124829
124830
124831
124832
124833
124834
124835
124836
124837
124838
124839
......
125144
125145
125146
125147
125148
125149
125150
125151


125152
125153
125154
125155
125156
125157
125158
......
125228
125229
125230
125231
125232
125233
125234










125235
125236
125237
125238
125239
125240
125241
......
125397
125398
125399
125400
125401
125402
125403
125404




125405
125406
125407
125408
125409
125410
125411
......
125781
125782
125783
125784
125785
125786
125787




125788
125789
125790
125791
125792
125793
125794
......
125840
125841
125842
125843
125844
125845
125846
125847
125848
125849
125850
125851
125852
125853
125854
......
125860
125861
125862
125863
125864
125865
125866
125867
125868
125869
125870
125871
125872
125873
125874
......
128245
128246
128247
128248
128249
128250
128251
128252
128253
128254
128255
128256
128257
128258
128259
......
128411
128412
128413
128414
128415
128416
128417
128418
128419
128420
128421
128422
128423
128424
128425
128426
128427
128428
128429

128430
128431
128432
128433
128434
128435
128436
......
128492
128493
128494
128495
128496
128497
128498
































































































128499
128500
128501
128502
128503
128504
128505
......
128555
128556
128557
128558
128559
128560
128561

128562
128563
128564
128565
128566
128567
128568
128569
128570
128571
128572
128573
128574

128575
128576
128577
128578
128579
128580
128581
128582
128583
128584
128585
128586
128587
128588
128589
128590
128591
128592
128593
128594
128595
128596
128597
128598
128599
128600
128601
128602
128603
128604
128605
128606
128607
128608
128609
128610
128611
128612
128613
128614
128615
128616
128617
128618
128619
128620

128621
128622
128623


128624
128625
128626
128627
128628
128629
128630
......
129755
129756
129757
129758
129759
129760
129761

129762
129763
129764
129765
129766
129767
129768
......
131255
131256
131257
131258
131259
131260
131261
131262
131263
131264
131265
131266
131267
131268
131269
......
131499
131500
131501
131502
131503
131504
131505
131506
131507
131508
131509
131510
131511
131512
131513
......
131822
131823
131824
131825
131826
131827
131828















131829
131830
131831
131832
131833
131834
131835
......
132645
132646
132647
132648
132649
132650
132651
132652
132653
132654
132655
132656
132657
132658
132659
132660
132661
132662
132663

132664
132665
132666
132667
132668
132669
132670
......
132698
132699
132700
132701
132702
132703
132704
132705
132706
132707
132708
132709
132710
132711
132712
132713
132714
132715

132716
132717
132718
132719
132720
132721
132722
132723
132724
132725


132726
132727
132728
132729
132730
132731
132732
......
133667
133668
133669
133670
133671
133672
133673
133674
133675

133676
133677
133678
133679
133680
133681
133682
133683
133684
133685
133686
133687
133688
133689
133690
133691
133692
133693
133694
133695
133696
......
134265
134266
134267
134268
134269
134270
134271
134272
134273
134274
134275
134276
134277
134278
134279
......
134674
134675
134676
134677
134678
134679
134680
134681
134682
134683


134684
134685
134686
134687
134688

134689
134690
134691
134692
134693
134694
134695
......
134786
134787
134788
134789
134790
134791
134792
134793
134794
134795
134796
134797
134798
134799
134800
134801
134802
134803
......
134944
134945
134946
134947
134948
134949
134950





















134951
134952
134953
134954
134955
134956
134957
......
136484
136485
136486
136487
136488
136489
136490

136491





























136492
136493
136494
136495

136496
136497
136498
136499
136500
136501

136502
136503

136504
136505
136506
136507
136508
136509
136510
136511
136512
136513

136514
136515
136516
136517

136518
136519










136520
136521
136522
136523
136524
136525
136526
......
136667
136668
136669
136670
136671
136672
136673
136674
136675
136676
136677
136678
136679
136680
136681
......
136731
136732
136733
136734
136735
136736
136737

136738
136739
136740
136741
136742
136743
136744
......
136797
136798
136799
136800
136801
136802
136803

136804
136805
136806
136807
136808
136809
136810
136811
......
136866
136867
136868
136869
136870
136871
136872
136873




136874
136875
136876
136877
136878
136879
136880
......
136965
136966
136967
136968
136969
136970
136971
136972
136973
136974
136975
136976
136977
136978
136979
136980
136981
136982
136983
136984
136985
136986
136987
......
137017
137018
137019
137020
137021
137022
137023
137024
137025
137026
137027
137028
137029
137030
137031
137032
137033
137034
137035
137036
137037
137038
137039
137040
137041
137042
137043
137044
......
137048
137049
137050
137051
137052
137053
137054
137055
137056
137057
137058
137059
137060
137061
137062
137063
137064
137065
137066
137067
137068
137069
137070
137071
137072
137073
137074
137075
137076
137077
137078
137079
137080
137081
137082
137083
137084
137085
137086
137087
137088
137089
137090
137091
137092
137093
137094
137095
137096
137097
137098
137099
137100
137101
137102
137103
137104
137105
137106
137107
137108
137109
137110
137111
137112
137113
137114
137115
137116
137117
137118
137119
137120
137121
137122
137123
137124
137125
......
137180
137181
137182
137183
137184
137185
137186

137187
137188
137189
137190
137191
137192
137193
137194


137195
137196
137197
137198
137199
137200
137201
137202
137203
137204
137205
137206
137207
137208
137209
137210
137211
137212
137213
137214
137215
137216
137217
137218
137219
137220
137221
137222
137223
137224
137225
137226
137227
137228
137229
137230

137231
137232
137233
137234
137235
137236
137237
137238


137239
137240
137241
137242
137243
137244
137245
......
137261
137262
137263
137264
137265
137266
137267
137268
137269
137270
137271
137272
137273
137274
137275
137276



137277
137278
137279
137280
137281
137282
137283
137284
137285
137286
137287
137288
137289
137290
137291
137292
137293
137294
137295
137296
137297
137298
137299
137300
137301
137302
137303
137304
137305
137306
137307
137308
137309
137310
137311
137312
137313
137314
137315
137316
137317
137318
137319
137320
137321
137322
137323
137324
137325
137326
137327
137328
137329
137330
137331
137332
137333
137334
137335
137336
137337
137338
137339
137340
137341
137342
137343
137344
137345
137346
137347
137348
137349
137350
137351
137352
137353
137354
137355
137356
137357
137358
137359
137360
137361
137362
137363
137364
137365
137366
137367
137368
137369
137370
137371
137372
137373
137374
137375
137376
137377
137378
137379
137380
137381
137382
137383
137384
137385
137386
137387
137388
137389
137390
137391
137392
137393
137394
137395
137396
137397
137398
137399
137400
137401
137402
137403
137404
137405
137406
137407
137408
137409
137410
137411
137412
137413
137414
137415
137416
137417
137418
137419
137420
137421
137422
137423
137424
137425
137426
137427
137428
137429
137430
137431
137432
137433
137434
137435
137436
137437
137438
137439
137440
137441
137442
137443
137444
137445
137446
137447
137448
137449
137450
137451
137452
137453
137454
137455
137456
137457
137458
137459
137460
137461
137462
137463
137464
137465
137466
137467
137468
137469
137470
137471
137472
137473
137474
137475
137476
137477
137478
137479
137480
137481
137482
137483
137484
137485
137486
137487
137488
137489
137490
137491
137492
137493
137494
137495
137496
137497
137498
137499
137500
137501
137502
137503
137504
137505
137506
137507
137508
137509
137510
137511
137512
137513
137514
137515
137516
137517
137518
137519
137520
137521
137522
137523
137524
137525
137526
137527
137528
137529
137530
137531
137532
137533
137534
137535
137536
137537
137538
137539
137540
137541
137542
137543
137544
137545
137546
137547
137548
137549
137550
137551
137552
137553
137554
137555
137556
137557
137558
137559
137560
137561
137562
137563
137564
137565
137566
137567
137568
137569
137570
137571
137572
137573
137574
137575
137576
137577
137578
137579
137580
137581
137582
137583
137584
137585
137586
137587
137588
137589
137590
137591
137592
137593
137594
137595
137596
137597
137598
137599
137600
137601
137602
137603
137604
137605
137606
137607
137608
137609
137610
137611
137612
137613
137614
137615
137616
137617
137618
137619
137620
137621
137622
137623
137624
137625
137626
137627
137628
137629
137630
137631
137632
137633
137634
137635
137636
137637
137638
137639
137640
137641
137642
137643
137644
137645
137646
137647
137648
137649
137650
137651
137652
137653
137654
137655
137656
137657
137658
137659
137660
137661
137662
137663
137664
137665
137666
137667
137668
137669
137670
137671
137672
137673
137674
137675
137676
137677
137678
137679
137680
137681
137682
137683
137684
137685
137686
137687
137688
137689
137690
137691
137692
137693
137694
137695
137696
137697
137698
137699
137700
137701
137702
137703
137704
137705
137706
137707
137708
137709
137710
137711
137712
137713
137714
137715
137716
137717
137718
137719
137720
137721
137722
137723
137724
137725
137726
137727
137728
137729
137730
137731
137732
137733
137734
137735
137736
137737
137738
137739
137740
137741
137742
137743
137744
137745
137746
137747
137748
137749
137750
137751
137752
137753
137754
137755
137756
137757
137758
137759
137760
137761
137762
137763
137764
137765
137766











137767
137768
137769
137770
137771
137772
137773
......
137944
137945
137946
137947
137948
137949
137950
137951
137952
137953
137954
137955
137956
137957
137958
137959
137960
137961
137962
137963
137964
137965
137966
137967
137968
137969
137970
137971
137972
137973
137974
137975
137976
137977
137978
137979
137980
137981
137982
137983
137984
137985
137986
137987
137988
137989
137990
137991
137992





















































































































137993
137994






137995
137996
137997
137998

















137999


138000
138001





138002
138003








138004
138005
138006
138007
138008
138009
138010


























138011
138012







138013
138014









138015
138016
138017








138018
138019

138020
138021
138022
138023
138024
138025
138026
......
138046
138047
138048
138049
138050
138051
138052

138053
138054
138055
138056
138057
138058
138059
138060
138061
138062
138063
138064
138065
138066
138067
138068
138069
138070
138071
138072
138073
138074
138075
138076
138077
138078
138079
138080
138081
138082
138083
138084
138085
138086
138087
138088
138089
138090
138091
138092
138093
138094
138095
138096
138097
138098
138099
138100
138101
138102
138103
138104
138105
138106
138107
138108
138109
138110
138111
138112
138113
138114
138115
138116
138117
138118
138119
138120
138121

138122
138123
138124
138125
138126
138127
138128
138129
138130
138131
138132
138133
138134
138135
138136
138137
138138
138139
138140
138141
138142
138143
138144
138145
138146
138147
138148
138149
138150
138151
138152
138153
138154
138155
138156
138157
138158
138159
138160
138161
138162
138163
138164
138165
138166
138167
138168
138169
138170
138171
138172
138173
138174
138175
138176
138177
138178
138179
138180
138181
138182
138183
138184
138185
138186
138187
138188
138189
138190
138191
138192
138193
138194
138195
138196
138197
138198
138199
138200
138201
138202
138203
138204
138205
138206
138207
138208
138209
138210
138211
138212
138213
138214
138215
138216
138217
138218
138219
138220
138221
138222
138223
138224
138225
138226
138227
138228
138229
138230
138231
138232
138233
138234
138235
138236
138237
138238
138239
138240
138241
138242
138243
138244
138245
138246
138247
138248
138249
138250
138251
138252
138253
138254
138255
138256
138257
138258
138259
138260
138261
138262
138263
138264
138265
138266
138267
138268
138269
138270
138271
138272
138273
138274
138275
138276
138277
138278
138279
138280
138281
138282
138283
138284
138285
138286
138287
138288
138289
138290
138291
138292
138293
138294
138295
138296
138297
138298
138299
138300
138301
138302
138303
138304
138305
138306
138307
138308
138309
138310
138311
138312
138313
138314
138315
138316
138317
138318
138319
138320
138321
138322
138323
138324
138325
138326
138327
138328
138329
138330
138331
138332
138333
138334
138335
138336
138337
138338
138339
138340
138341
138342
138343
138344
138345
138346
138347
138348
138349
138350
138351
138352
138353
138354
138355
138356
138357
138358
138359
138360
......
138468
138469
138470
138471
138472
138473
138474
138475
138476
138477
138478
138479
138480
138481
138482
138483







138484
138485
138486
138487
138488
138489
138490
138491
138492
138493
138494
138495
138496
138497
138498
138499
138500
138501
138502
138503
138504
138505
138506
138507
138508
138509
138510
138511
138512
138513
138514
138515
138516
138517
138518
138519
138520
138521
138522
138523
138524
138525
138526
138527
138528
138529
138530
138531
138532
138533
138534
138535
138536
138537
138538
138539
138540
138541
138542
138543
138544
138545
138546
138547
138548
138549
138550
138551
......
138608
138609
138610
138611
138612
138613
138614





































138615
138616
138617
138618
138619
138620
138621
138622
138623
138624
138625
138626
138627



138628
138629

138630

138631
138632
138633
138634
138635
138636
138637
138638
138639
......
138688
138689
138690
138691
138692
138693
138694
138695
138696
138697
138698
138699
138700
138701
138702
......
138726
138727
138728
138729
138730
138731
138732
138733
138734
138735
138736
138737
138738
138739
138740
138741

138742
138743
138744
138745
138746
138747
138748
138749
138750
138751
138752
138753
......
138781
138782
138783
138784
138785
138786
138787
138788
138789
138790
138791
138792
138793
138794
138795
138796
138797
138798
138799
138800
138801
138802
138803
138804
138805
138806
138807
138808
138809
138810
138811
138812
138813
138814
138815
138816
138817
138818
138819
138820
138821
138822
138823
138824
138825
138826
138827
138828
138829
138830
138831
138832
138833
138834
138835
138836
138837
138838
138839
138840
138841
138842
138843
138844
138845
138846
138847
138848
138849
138850
138851
138852
138853
138854
138855
138856
138857
138858
138859
138860
138861
138862
138863
138864
138865
138866
138867
138868
138869
138870
138871
138872
138873
138874
138875
138876
138877
138878
138879
138880
138881
138882
138883
138884
138885
138886
138887
138888
138889
138890
138891
138892
138893
138894
138895
138896
138897
138898
138899
138900
138901
138902
138903
138904
138905
138906
138907
138908
138909
138910
138911
138912
138913
138914
138915
138916
138917
138918
138919
138920
138921
138922
138923
138924
138925
138926
138927
138928
138929
138930
138931
138932
138933
138934
138935
138936
138937
138938
138939
138940
138941
138942
138943
138944
138945
138946
138947
138948
138949
138950
138951
138952
138953
138954
138955
138956
138957
138958
138959
138960
138961
138962
138963
138964
138965
138966
138967
138968
138969
138970
138971
138972
138973
138974
138975
138976
138977
138978
138979
138980
138981
138982
138983
138984
138985
138986
138987
138988
138989
138990
138991
138992
138993
138994
138995
138996
138997
138998
138999
139000
139001
139002
139003
139004
139005
139006
139007
139008
139009
139010
139011
139012
139013
139014
139015
139016
139017
139018
139019
139020
139021
139022
139023
139024
139025
139026
139027
139028
139029
139030
139031
139032
139033
139034
139035
139036
139037
139038
139039
139040
139041
139042
139043
139044
139045
139046
139047
139048
139049
139050
139051
139052
139053
139054
139055
139056
139057
139058
139059
139060
139061
139062
139063
139064
139065
139066
139067
139068
139069
139070
139071
139072
139073
139074
139075
139076
139077
139078
139079
139080
139081
139082
139083
139084
139085
139086
139087
139088
139089
139090
139091
139092
139093
139094
139095
139096
139097
139098
139099
139100
139101
139102
139103
139104
139105
139106
139107
139108
139109
139110
139111
139112
139113
139114
139115
139116
139117
139118
139119
139120
139121
139122
139123
139124
139125
139126
139127
139128
139129
139130
139131
139132
139133







139134
139135
139136
139137


139138
139139
139140
139141
139142
139143
139144
139145
139146
139147

139148

139149




139150
139151
139152
139153
139154
139155
139156
......
139193
139194
139195
139196
139197
139198
139199
139200
139201
139202
139203
139204
139205
139206
139207
139208
139209
139210
139211
139212
139213
139214
139215
......
139224
139225
139226
139227
139228
139229
139230
139231
139232
139233
139234
139235
139236
139237
139238
139239
139240
139241
139242
139243
139244
139245
139246
139247
139248
139249
139250
139251
139252
139253
139254
139255
139256
139257
139258
139259
139260
139261
139262
139263
139264
139265
139266
139267
139268
139269
139270
139271
139272
139273
139274
139275
139276
139277
139278
139279
139280
139281
139282
139283
139284
139285
139286
139287
139288
......
139290
139291
139292
139293
139294
139295
139296






139297
139298
139299
139300
139301


139302
139303
139304
139305
139306
139307
139308
139309
139310
139311
139312
139313
139314
139315
139316
139317
139318
139319
139320
139321
139322
139323
139324
139325
139326
139327
139328
139329
139330
139331
139332
139333
139334
139335
139336
139337
139338
139339
139340
139341
139342
139343
139344
139345
139346
139347
139348
139349
139350

139351
139352
139353
139354
139355
139356
139357
139358
139359

139360
139361
139362

139363
139364
139365
139366
139367
139368
139369
139370
139371
139372
139373
139374
139375
139376
139377
139378
139379
139380
139381
139382
139383
139384
139385
139386
139387
139388
139389
139390
139391
139392
139393
139394
139395
139396
139397
139398
139399
139400
139401
139402
139403
139404
139405
139406
139407
139408
139409
139410
139411
139412
139413
139414
139415
139416
139417
139418
139419
139420
139421
139422
139423
139424
139425
139426
139427
139428
139429
139430
139431
139432
139433
139434
139435
139436
139437
139438
139439
139440
139441
139442
139443
139444
139445
139446
139447
139448
139449
139450
139451
139452
139453
139454
139455
139456
139457
139458
139459
139460
139461
139462
139463
139464
139465
139466
139467
139468
139469
139470
139471
139472
139473
139474
139475
139476
139477
139478
139479
139480
139481
139482
139483
139484
139485
139486
139487
139488
139489
139490
139491
139492
139493
139494
139495
139496
139497
139498
139499
139500
139501
139502
139503
139504
139505
139506
139507
139508
139509
139510
139511
139512
139513
139514
139515
139516
139517
139518
139519
139520
139521
139522
139523
139524
139525
139526
139527
139528
139529
139530
139531
139532
139533
139534
139535
139536
139537
139538
139539
139540
139541
139542
139543
139544
139545
139546
139547
139548
139549
139550
139551
139552
139553
139554
139555
139556
139557
139558
139559
139560
139561
139562
139563
139564
139565
139566
139567
139568
139569
139570
139571
139572
139573
139574
139575
139576
139577
139578
139579
139580
139581
139582
139583
139584
139585
139586
139587
139588
139589
139590
139591
139592
139593
139594
139595
139596
139597
139598
139599
139600
139601
139602
139603
139604
139605
139606
139607
139608
139609
139610
139611
139612
139613
139614
139615
139616
139617
139618
139619
139620
139621
139622
139623
139624
139625
139626
139627
139628
139629
139630
139631
139632
139633
139634
139635
139636
139637
139638
139639
139640
139641
139642
139643
139644
139645
139646
139647
139648
139649
139650
139651
139652
139653
139654
139655
139656
139657
139658
139659
139660
139661
139662
139663
139664
139665
139666
139667
139668
139669
139670
139671

139672
139673
139674
139675
139676
139677
139678
139679
139680
139681
139682
139683
139684
139685
139686
139687
139688
139689
139690
139691
139692
139693
139694
139695
139696
139697
139698
139699
139700
139701
139702
139703
139704
139705
139706
139707
139708
139709
139710
139711
139712
139713
139714
139715
139716
139717
139718
139719

139720
139721
139722

139723
139724
139725

139726
139727
139728
139729
139730
139731
139732
139733
139734
139735
139736
139737
139738
139739

139740
139741
139742
139743
139744
139745
139746
139747
139748
139749
139750
139751
139752
139753
139754
139755
139756
139757
139758
139759
139760
139761
139762
139763
139764
139765
139766
139767
139768

139769
139770
139771
139772
139773
139774
139775
139776
139777
139778
139779
139780
139781
139782
139783
139784
139785
139786
139787

139788
139789
139790
139791
139792
139793
139794
139795
139796
139797
139798
139799

139800
139801
139802
139803
139804
139805
139806
139807
139808
139809

139810
139811
139812
139813
139814
139815
139816
139817
139818
139819
139820
139821
139822
139823
139824
139825
139826
139827
139828
139829
139830
139831
139832
139833
139834
139835
139836
139837
139838
139839
139840
139841
139842
139843
139844
139845
139846
139847
139848
139849
139850
139851
139852
139853
139854
139855
139856
139857
139858
139859
139860
139861
139862
139863
139864
139865
139866
139867
139868
139869
139870
139871
139872
139873
139874
139875
139876
139877
139878
139879
139880
139881
139882
139883
139884
139885
139886
139887
139888
139889
139890

139891
139892
139893
139894
139895
139896
139897
139898
139899
139900
139901
139902
139903
139904
139905
139906
139907

139908
139909
139910
139911
139912
139913
139914
139915
139916
139917
139918
139919
139920
139921
139922
139923
139924
139925
139926
139927
139928
139929
139930
139931
139932
139933

139934
139935
139936
139937
139938
139939
139940

139941
139942
139943

139944
139945
139946
139947

139948
139949
139950
139951
139952
139953

139954
139955
139956
139957
139958
139959

139960
139961
139962

139963
139964
139965

139966
139967
139968
139969
139970
139971
139972
139973
139974
139975
139976
139977
139978
139979
139980
139981
139982

139983
139984
139985
139986
139987
139988
139989
139990
139991
139992
139993
139994
139995
139996
139997
139998
139999
140000
140001
140002
140003
140004
140005
......
140008
140009
140010
140011
140012
140013
140014
140015
140016
140017
140018
140019
140020
140021
140022
140023
140024
140025
140026
140027
140028
140029
140030
140031
140032
140033
140034
140035
140036
140037
140038
140039
140040
140041
140042
140043
140044
140045
140046
140047
140048
140049
140050

140051
140052
140053
140054
140055
140056
140057
140058
140059
140060
140061

140062
140063
140064
140065
140066
140067
140068
140069
140070
140071
140072
140073
140074
140075
140076
140077

140078
140079
140080
140081
140082
140083
140084
140085
140086
140087
140088
140089
140090
140091
140092
140093
140094
140095
140096
140097
140098

140099
140100
140101
140102
140103
140104
140105
140106
140107
140108
140109
140110
140111
140112
140113
140114
140115
140116
140117
140118
140119
140120
140121
140122
140123
140124
140125
140126
140127
140128
140129
140130
140131
140132
140133
140134
140135
140136
140137
140138
140139
140140
140141
140142
140143
140144
140145
140146
140147
140148
140149
140150
140151
140152
140153
140154
140155
140156
140157
140158
140159
140160
140161
140162
140163
140164
140165
140166
140167
140168
140169
140170
140171
140172
140173
140174
140175
140176
140177
140178
140179
140180
140181
140182
140183
140184
140185
140186
140187
140188
140189
140190
140191
140192
140193
140194
140195
140196
140197
140198
140199
140200
140201
140202
140203
140204
140205
140206
140207
140208
140209
140210
140211
140212
140213
140214
140215
140216
140217
140218
140219
140220
140221
140222
140223
140224
140225
140226
140227
140228
140229
140230
140231
140232

140233
140234
140235


140236
140237
140238

140239
140240
140241


140242
140243
140244
140245
140246
140247
140248
140249
140250
140251
140252
140253
140254
140255
140256
140257
140258
140259
140260
140261
140262
140263
140264
140265
140266
140267
140268
140269
140270
140271
140272
140273
140274
140275
140276
140277
140278
140279
140280
140281
140282
140283
140284
140285
140286
140287
140288
140289
140290
140291
140292
140293
140294
140295
140296
140297
140298
140299
140300
140301
140302
140303
140304
140305
140306
140307
140308
140309
140310
140311
140312
140313
140314
140315
140316
140317
140318
140319
140320
140321
140322
140323
140324
140325
140326
140327
140328
140329
140330
140331
140332
140333
140334
140335
140336
140337
140338
140339
140340
140341
140342
140343
140344
140345
140346
140347
140348
140349
140350
140351
140352
140353
140354
140355
140356
140357
140358
140359
140360
140361
140362
140363
140364
140365
140366
140367
140368
140369
140370
140371
140372
140373
140374
140375
140376
140377
140378
140379
140380
140381
140382
140383
140384
140385
140386
140387
140388
140389
140390
140391
140392
140393
140394
140395
140396
140397
140398
140399
140400
140401
140402
140403
140404
140405
140406
140407
140408
140409
140410
140411
140412
140413
......
140415
140416
140417
140418
140419
140420
140421
140422
140423
140424
140425
140426
140427
140428
140429
140430
140431
140432
140433
140434
140435
140436
140437
140438
......
140462
140463
140464
140465
140466
140467
140468
140469
140470



140471
140472
140473
140474
140475
140476
140477
......
140535
140536
140537
140538
140539
140540
140541



140542




140543
140544
140545
140546
140547


140548
140549
140550
140551
140552
140553
140554
140555


140556
140557
140558
140559
140560
140561
140562
......
141497
141498
141499
141500
141501
141502
141503
141504
141505
141506
141507
141508
141509
141510
141511
......
141965
141966
141967
141968
141969
141970
141971
141972
141973
141974
141975
141976
141977
141978
141979
......
142791
142792
142793
142794
142795
142796
142797

142798
142799
142800
142801
142802
142803
142804
......
143288
143289
143290
143291
143292
143293
143294
143295
143296
143297

143298
143299
143300
143301
143302
143303
143304
......
144796
144797
144798
144799
144800
144801
144802

144803
144804
144805
144806
144807
144808
144809
......
144828
144829
144830
144831
144832
144833
144834
144835




144836
144837
144838
144839
144840
144841



144842
144843
144844
144845
144846
144847
144848
......
145016
145017
145018
145019
145020
145021
145022
145023
145024
145025
145026
145027
145028
145029
145030
......
145318
145319
145320
145321
145322
145323
145324
145325
145326
145327
145328
145329
145330
145331
145332
145333
145334
145335
145336
145337
145338
145339
145340
145341
145342
145343
145344
145345
145346
145347
145348
145349
145350
145351
145352
145353
145354
145355
145356
145357
145358
145359
145360
145361
145362
......
145876
145877
145878
145879
145880
145881
145882
















145883
145884
145885
145886
145887
145888
145889
......
165837
165838
165839
165840
165841
165842
165843
165844
165845
165846
165847
165848
165849
165850
165851
......
167649
167650
167651
167652
167653
167654
167655
167656
167657
167658
167659
167660
167661
167662
167663
......
168524
168525
168526
168527
168528
168529
168530
168531
168532
168533
168534
168535
168536
168537
168538
......
169235
169236
169237
169238
169239
169240
169241









































































































































































































































































































































































































































































169242
169243
169244
169245
169246
169247
169248
......
169249
169250
169251
169252
169253
169254
169255



169256
169257
169258
169259
169260
169261
169262
......
169435
169436
169437
169438
169439
169440
169441

169442

169443
169444
169445
169446
169447
169448
169449
......
169452
169453
169454
169455
169456
169457
169458




















169459
169460
169461
169462
169463
169464
169465
......
169631
169632
169633
169634
169635
169636
169637
169638
169639
169640
169641
169642
169643
169644
169645
169646
169647
169648
169649
169650
169651
169652
169653
169654
169655
169656
169657
169658
169659
169660
169661
169662
......
169814
169815
169816
169817
169818
169819
169820


169821
169822
169823
169824
169825
169826
169827
......
169908
169909
169910
169911
169912
169913
169914

169915
169916
169917
169918
169919
169920
169921
169922
169923
169924
169925

169926
169927
169928
169929
169930
169931
169932
169933
169934
169935
169936
......
176453
176454
176455
176456
176457
176458
176459




176460
176461
176462
176463
176464
176465
176466
176467
176468
176469







176470
176471
176472
176473
176474
176475
176476
176477
176478
176479
176480
176481
176482
176483
176484
176485
176486
176487
176488
176489
176490
176491
176492
176493
176494
176495
176496
176497
176498
176499
176500
176501
176502
176503
176504
176505
176506
176507
176508
176509
176510
176511
176512
176513
176514
176515
176516
......
176520
176521
176522
176523
176524
176525
176526
176527
176528


176529
176530
176531

























176532


176533
176534
176535
176536
176537
176538
176539
176540
176541

176542
176543
176544


176545
176546
176547
176548
176549
176550
176551
......
176571
176572
176573
176574
176575
176576
176577

176578
176579
176580
176581
176582
176583
176584
......
176590
176591
176592
176593
176594
176595
176596










176597
176598
176599
176600
176601
176602
176603
176604

176605
176606
















176607
176608
176609

176610
176611
176612
176613
176614
176615
176616
176617
176618
176619
176620


176621
176622
176623
176624
176625
176626
176627
176628
176629
176630
176631
176632
176633
176634
176635
176636
176637
176638
176639
176640
176641
176642
176643
176644
176645
176646
176647
176648
176649
176650
176651
176652
176653
176654
176655
176656
......
176662
176663
176664
176665
176666
176667
176668
176669
176670
176671
176672





176673
176674
176675
176676
176677
176678
176679
176680
176681
176682
176683
176684
176685
176686












176687
176688
176689
176690
176691
176692

176693
176694
176695
176696
176697
176698
176699
176700
176701
176702
176703
176704
176705
176706
176707
176708
176709
















176710
176711
176712
176713
176714
176715
176716
......
176723
176724
176725
176726
176727
176728
176729
176730
176731
176732
176733
176734
176735
176736
176737
......
185144
185145
185146
185147
185148
185149
185150


185151
185152
185153
185154
185155
185156
185157
......
185224
185225
185226
185227
185228
185229
185230

185231
185232
185233
185234
185235
185236
185237
185238
185239
185240
......
185327
185328
185329
185330
185331
185332
185333

185334
185335
185336
185337
185338
185339
185340
185341


185342
185343
185344
185345
185346
185347
185348
185349
185350
185351
185352
185353
185354
185355
185356
185357

185358
185359
185360
185361
185362
185363
185364
185365
185366
185367
185368

185369
185370
185371
185372
185373
185374
185375
185376


185377
185378
185379
185380
185381
185382
185383
......
185399
185400
185401
185402
185403
185404
185405
185406
185407
185408
185409
185410
185411
185412
185413
185414



185415
185416
185417
185418
185419
185420
185421
185422
185423
185424
185425
185426
185427
185428
185429
185430
185431
185432
185433
185434
185435
185436
185437
185438
185439
185440
185441
185442
185443
185444
185445
185446
185447
185448
185449
185450
185451
185452
185453
185454
185455
185456
185457
185458
185459

185460
185461
185462
185463
185464
185465
185466
185467


185468
185469
185470
185471




185472
185473
185474
185475
185476
185477
185478
185479
185480



185481
185482
185483
185484
185485
185486
185487
185488
185489


185490
185491
185492
185493
185494


185495
185496
185497
185498
185499
185500
185501
185502
......
185590
185591
185592
185593
185594
185595
185596
185597
185598
185599
185600
185601
185602
185603
185604
185605
185606




















185607

185608
185609

185610
185611
185612
185613
185614
185615
185616
......
185626
185627
185628
185629
185630
185631
185632

185633
185634
185635
185636
185637
185638
185639
185640
185641
185642
185643
185644
185645
185646
185647
185648
......
185755
185756
185757
185758
185759
185760
185761
185762
185763
185764
185765
185766
185767
185768
185769
185770
185771
185772
185773
185774
185775
185776
185777
185778
185779
185780
185781
185782
185783
185784
185785
185786
185787
185788
185789
185790
185791
185792
185793
185794
185795
......
185852
185853
185854
185855
185856
185857
185858





































185859
185860
185861
185862
185863
185864
185865
185866
185867
185868
185869
185870
185871



185872
185873

185874

185875
185876
185877
185878
185879
185880
185881
185882
185883
......
185932
185933
185934
185935
185936
185937
185938
185939
185940
185941
185942
185943
185944
185945
185946
......
185970
185971
185972
185973
185974
185975
185976
185977
185978
185979
185980
185981
185982
185983
185984
185985

185986
185987
185988
185989
185990
185991
185992
185993
185994
185995
185996
185997
......
186025
186026
186027
186028
186029
186030
186031
186032
186033
186034
186035
186036
186037
186038
186039
186040
186041
186042
186043
186044
186045
186046
186047
186048
186049
186050
186051
186052
186053
186054
186055
186056
186057
186058
186059
186060
186061
186062
186063
186064
186065
186066
186067
186068

186069
186070
186071
186072
186073
186074
186075






186076
186077
186078
186079


186080
186081
186082
186083
186084
186085
186086
186087
186088
186089

186090

186091




186092
186093
186094
186095
186096
186097
186098
......
186126
186127
186128
186129
186130
186131
186132
186133
186134
186135
186136
186137
186138
186139
186140
186141
186142
186143
186144
186145
186146
186147
186148
186149
186150
186151
186152
186153
186154
186155
186156
186157
186158
186159
186160
186161
186162
186163
186164
186165
186166
186167
186168
186169
186170
186171
186172
186173
186174
186175
186176
186177
186178
186179
186180
186181
186182
186183
186184
186185
186186
186187
186188
186189
186190
186191
186192
186193
186194
186195
186196
186197
186198
186199
186200
186201
186202
186203
186204
186205
186206
186207
186208
186209
186210
186211
186212
186213
186214
186215
186216
186217
186218
186219
186220
186221






186222
186223
186224
186225
186226
186227
186228
186229
186230
186231
186232
186233
186234
186235
186236
186237
186238
186239
186240
186241
186242
186243
186244
186245
186246
186247
186248
186249
186250
186251
186252
186253
186254
186255
186256
186257
186258
186259
186260
186261
186262
186263
186264
186265
186266
186267
186268
186269
186270
......
186275
186276
186277
186278
186279
186280
186281
186282
186283
186284
186285
186286
186287
186288
186289
186290
186291
186292
186293
186294
186295
186296
186297
186298
......
186396
186397
186398
186399
186400
186401
186402



186403




186404
186405
186406
186407
186408


186409
186410
186411
186412
186413
186414
186415
186416


186417
186418
186419
186420
186421
186422
186423
......
186887
186888
186889
186890
186891
186892
186893










186894
186895
186896
186897
186898
186899
186900
......
186923
186924
186925
186926
186927
186928
186929
186930
186931
186932
186933
186934
186935
186936
186937
186938
186939
......
188679
188680
188681
188682
188683
188684
188685
188686

188687
188688
188689
188690
188691
188692
188693
......
188760
188761
188762
188763
188764
188765
188766

188767
188768
188769
188770
188771
188772
188773
......
189019
189020
189021
189022
189023
189024
189025

189026
189027
189028
189029
189030
189031
189032
......
189073
189074
189075
189076
189077
189078
189079

189080
189081

189082
189083
189084
189085
189086
189087
189088
......
189328
189329
189330
189331
189332
189333
189334
189335


189336
189337
189338
189339
189340
189341
189342
......
189509
189510
189511
189512
189513
189514
189515

189516
189517
189518
189519
189520
189521
189522
......
190032
190033
190034
190035
190036
190037
190038










190039
190040
190041
190042
190043
190044
190045
......
190311
190312
190313
190314
190315
190316
190317

190318
190319
190320
190321
190322
190323
190324
......
190329
190330
190331
190332
190333
190334
190335

190336


190337
190338
190339
190340
190341
190342
190343
......
190603
190604
190605
190606
190607
190608
190609

190610
190611
190612
190613
190614
190615
190616
......
190689
190690
190691
190692
190693
190694
190695
190696

190697


190698
190699
190700
190701
190702
190703
190704
190705
190706
190707
190708
190709
190710
190711
190712
190713
190714
190715
190716
......
196856
196857
196858
196859
196860
196861
196862






196863
196864
196865
196866
196867
196868
196869
196870
......
196950
196951
196952
196953
196954
196955
196956

196957
196958
196959
196960
196961
196962
196963
......
201071
201072
201073
201074
201075
201076
201077
201078
201079
201080
201081
201082
201083
201084
201085
......
205339
205340
205341
205342
205343
205344
205345
205346
205347
205348
205349
205350
205351
205352
/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
** version 3.21.0.  By combining all the individual C code files into this
** single large file, the entire code can be compiled as a single translation
** unit.  This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately.  Performance improvements
** of 5% or more are commonly seen when SQLite is compiled as a single
** translation unit.
**
** This file is all you need to compile SQLite.  To use SQLite in other
................................................................................
** been edited in any way since it was last checked in, then the last
** four hexadecimal digits of the hash may be modified.
**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.21.0"
#define SQLITE_VERSION_NUMBER 3021000
#define SQLITE_SOURCE_ID      "2017-10-24 18:55:49 1a584e499906b5c87ec7d43d4abce641fdf017c42125b083109bc77c4de48827"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
................................................................................
** support for additional result codes that provide more detailed information
** about errors. These [extended result codes] are enabled or disabled
** on a per database connection basis using the
** [sqlite3_extended_result_codes()] API.  Or, the extended code for
** the most recent error can be obtained using
** [sqlite3_extended_errcode()].
*/


#define SQLITE_IOERR_READ              (SQLITE_IOERR | (1<<8))
#define SQLITE_IOERR_SHORT_READ        (SQLITE_IOERR | (2<<8))
#define SQLITE_IOERR_WRITE             (SQLITE_IOERR | (3<<8))
#define SQLITE_IOERR_FSYNC             (SQLITE_IOERR | (4<<8))
#define SQLITE_IOERR_DIR_FSYNC         (SQLITE_IOERR | (5<<8))
#define SQLITE_IOERR_TRUNCATE          (SQLITE_IOERR | (6<<8))
#define SQLITE_IOERR_FSTAT             (SQLITE_IOERR | (7<<8))
................................................................................
#define SQLITE_LOCKED_SHAREDCACHE      (SQLITE_LOCKED |  (1<<8))
#define SQLITE_BUSY_RECOVERY           (SQLITE_BUSY   |  (1<<8))
#define SQLITE_BUSY_SNAPSHOT           (SQLITE_BUSY   |  (2<<8))
#define SQLITE_CANTOPEN_NOTEMPDIR      (SQLITE_CANTOPEN | (1<<8))
#define SQLITE_CANTOPEN_ISDIR          (SQLITE_CANTOPEN | (2<<8))
#define SQLITE_CANTOPEN_FULLPATH       (SQLITE_CANTOPEN | (3<<8))
#define SQLITE_CANTOPEN_CONVPATH       (SQLITE_CANTOPEN | (4<<8))

#define SQLITE_CORRUPT_VTAB            (SQLITE_CORRUPT | (1<<8))
#define SQLITE_READONLY_RECOVERY       (SQLITE_READONLY | (1<<8))
#define SQLITE_READONLY_CANTLOCK       (SQLITE_READONLY | (2<<8))
#define SQLITE_READONLY_ROLLBACK       (SQLITE_READONLY | (3<<8))
#define SQLITE_READONLY_DBMOVED        (SQLITE_READONLY | (4<<8))


#define SQLITE_ABORT_ROLLBACK          (SQLITE_ABORT | (2<<8))
#define SQLITE_CONSTRAINT_CHECK        (SQLITE_CONSTRAINT | (1<<8))
#define SQLITE_CONSTRAINT_COMMITHOOK   (SQLITE_CONSTRAINT | (2<<8))
#define SQLITE_CONSTRAINT_FOREIGNKEY   (SQLITE_CONSTRAINT | (3<<8))
#define SQLITE_CONSTRAINT_FUNCTION     (SQLITE_CONSTRAINT | (4<<8))
#define SQLITE_CONSTRAINT_NOTNULL      (SQLITE_CONSTRAINT | (5<<8))
#define SQLITE_CONSTRAINT_PRIMARYKEY   (SQLITE_CONSTRAINT | (6<<8))
................................................................................
** CAPI3REF: OS Interface Object
**
** An instance of the sqlite3_vfs object defines the interface between
** the SQLite core and the underlying operating system.  The "vfs"
** in the name of the object stands for "virtual file system".  See
** the [VFS | VFS documentation] for further information.
**
** The value of the iVersion field is initially 1 but may be larger in






** future versions of SQLite.  Additional fields may be appended to this
** object when the iVersion value is increased.  Note that the structure
** of the sqlite3_vfs object changes in the transaction between

** SQLite version 3.5.9 and 3.6.0 and yet the iVersion field was not
** modified.
**
** The szOsFile field is the size of the subclassed [sqlite3_file]
** structure used by this VFS.  mxPathname is the maximum length of
** a pathname in this VFS.
**
** Registered sqlite3_vfs objects are kept on a linked list formed by
** the pNext pointer.  The [sqlite3_vfs_register()]
................................................................................
** operation before closing the connection. This option may be used to
** override this behaviour. The first parameter passed to this operation
** is an integer - non-zero to disable checkpoints-on-close, or zero (the
** default) to enable them. The second parameter is a pointer to an integer
** into which is written 0 or 1 to indicate whether checkpoints-on-close
** have been disabled - 0 if they are not disabled, 1 if they are.
** </dd>
**
** <dt>SQLITE_DBCONFIG_ENABLE_QPSG</dt>
** <dd>^(The SQLITE_DBCONFIG_ENABLE_QPSG option activates or deactivates
** the [query planner stability guarantee] (QPSG).  When the QPSG is active,
** a single SQL query statement will always use the same algorithm regardless
** of values of [bound parameters].)^ The QPSG disables some query optimizations
** that look at the values of bound parameters, which can make some queries
** slower.  But the QPSG has the advantage of more predictable behavior.  With
** the QPSG active, SQLite will always use the same query plan in the field as
** was used during testing in the lab.
** </dd>









**
** </dl>
*/
#define SQLITE_DBCONFIG_MAINDBNAME            1000 /* const char* */
#define SQLITE_DBCONFIG_LOOKASIDE             1001 /* void* int int */
#define SQLITE_DBCONFIG_ENABLE_FKEY           1002 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_TRIGGER        1003 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER 1004 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION 1005 /* int int* */
#define SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE      1006 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_QPSG           1007 /* int int* */



/*
** CAPI3REF: Enable Or Disable Extended Result Codes
** METHOD: sqlite3
**
** ^The sqlite3_extended_result_codes() routine enables or disables the
** [extended result codes] feature of SQLite. ^The extended result
................................................................................
** ^A NULL pointer can be used in place of "main" to refer to the
** main database file.
** ^The third and fourth parameters to this routine
** are passed directly through to the second and third parameters of
** the xFileControl method.  ^The return value of the xFileControl
** method becomes the return value of this routine.
**
** ^The SQLITE_FCNTL_FILE_POINTER value for the op parameter causes
** a pointer to the underlying [sqlite3_file] object to be written into
** the space pointed to by the 4th parameter.  ^The SQLITE_FCNTL_FILE_POINTER
** case is a short-circuit path which does not actually invoke the
** underlying sqlite3_io_methods.xFileControl method.
**
** ^If the second parameter (zDbName) does not match the name of any
** open database file, then SQLITE_ERROR is returned.  ^This error
** code is not remembered and will not be recalled by [sqlite3_errcode()]
** or [sqlite3_errmsg()].  The underlying xFileControl method might
** also return SQLITE_ERROR.  There is no way to distinguish between
** an incorrect zDbName and an SQLITE_ERROR return from the underlying
** xFileControl method.
**
** See also: [SQLITE_FCNTL_LOCKSTATE]
*/
SQLITE_API int sqlite3_file_control(sqlite3*, const char *zDbName, int op, void*);

/*
** CAPI3REF: Testing Interface
**
** ^The sqlite3_test_control() interface is used to read out internal
................................................................................
#define SQLITE_TESTCTRL_ONCE_RESET_THRESHOLD    19
#define SQLITE_TESTCTRL_NEVER_CORRUPT           20
#define SQLITE_TESTCTRL_VDBE_COVERAGE           21
#define SQLITE_TESTCTRL_BYTEORDER               22
#define SQLITE_TESTCTRL_ISINIT                  23
#define SQLITE_TESTCTRL_SORTER_MMAP             24
#define SQLITE_TESTCTRL_IMPOSTER                25

#define SQLITE_TESTCTRL_LAST                    25

/*
** CAPI3REF: SQLite Runtime Status
**
** ^These interfaces are used to retrieve runtime status information
** about the performance of SQLite, and optionally to reset various
** highwater marks.  ^The first argument is an integer code for
................................................................................
** value returned is one of [SQLITE_ROLLBACK], [SQLITE_IGNORE], [SQLITE_FAIL],
** [SQLITE_ABORT], or [SQLITE_REPLACE], according to the [ON CONFLICT] mode
** of the SQL statement that triggered the call to the [xUpdate] method of the
** [virtual table].
*/
SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *);




























/*
** CAPI3REF: Conflict resolution modes
** KEYWORDS: {conflict resolution mode}
**
** These constants are returned by [sqlite3_vtab_on_conflict()] to
** inform a [virtual table] implementation what the [ON CONFLICT] mode
** is for the SQL statement being evaluated.
................................................................................
typedef struct Bitvec Bitvec;
typedef struct CollSeq CollSeq;
typedef struct Column Column;
typedef struct Db Db;
typedef struct Schema Schema;
typedef struct Expr Expr;
typedef struct ExprList ExprList;
typedef struct ExprSpan ExprSpan;
typedef struct FKey FKey;
typedef struct FuncDestructor FuncDestructor;
typedef struct FuncDef FuncDef;
typedef struct FuncDefHash FuncDefHash;
typedef struct IdList IdList;
typedef struct Index Index;
typedef struct IndexSample IndexSample;
................................................................................
                       int flags, int seekResult);
SQLITE_PRIVATE int sqlite3BtreeFirst(BtCursor*, int *pRes);
SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor*, int *pRes);
SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor*, int flags);
SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor*);
SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor*, int flags);
SQLITE_PRIVATE i64 sqlite3BtreeIntegerKey(BtCursor*);



SQLITE_PRIVATE int sqlite3BtreePayload(BtCursor*, u32 offset, u32 amt, void*);
SQLITE_PRIVATE const void *sqlite3BtreePayloadFetch(BtCursor*, u32 *pAmt);
SQLITE_PRIVATE u32 sqlite3BtreePayloadSize(BtCursor*);

SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(Btree*, int *aRoot, int nRoot, int, int*);
SQLITE_PRIVATE struct Pager *sqlite3BtreePager(Btree*);
SQLITE_PRIVATE i64 sqlite3BtreeRowCountEst(BtCursor*);
................................................................................
#define OP_Subtract       89 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */
#define OP_Multiply       90 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */
#define OP_Divide         91 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */
#define OP_Remainder      92 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */
#define OP_Concat         93 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */
#define OP_Compare        94 /* synopsis: r[P1@P3] <-> r[P2@P3]            */
#define OP_BitNot         95 /* same as TK_BITNOT, synopsis: r[P1]= ~r[P1] */
#define OP_Column         96 /* synopsis: r[P3]=PX                         */
#define OP_String8        97 /* same as TK_STRING, synopsis: r[P2]='P4'    */

#define OP_Affinity       98 /* synopsis: affinity(r[P1@P2])               */
#define OP_MakeRecord     99 /* synopsis: r[P3]=mkrec(r[P1@P2])            */
#define OP_Count         100 /* synopsis: r[P2]=count()                    */
#define OP_ReadCookie    101
#define OP_SetCookie     102
#define OP_ReopenIdx     103 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenRead      104 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenWrite     105 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenDup       106
#define OP_OpenAutoindex 107 /* synopsis: nColumn=P2                       */
#define OP_OpenEphemeral 108 /* synopsis: nColumn=P2                       */
#define OP_SorterOpen    109
#define OP_SequenceTest  110 /* synopsis: if( cursor[P1].ctr++ ) pc = P2   */
#define OP_OpenPseudo    111 /* synopsis: P3 columns in r[P2]              */
#define OP_Close         112
#define OP_ColumnsUsed   113
#define OP_Sequence      114 /* synopsis: r[P2]=cursor[P1].ctr++           */
#define OP_NewRowid      115 /* synopsis: r[P2]=rowid                      */
#define OP_Insert        116 /* synopsis: intkey=r[P3] data=r[P2]          */
#define OP_InsertInt     117 /* synopsis: intkey=P3 data=r[P2]             */
#define OP_Delete        118
#define OP_ResetCount    119
#define OP_SorterCompare 120 /* synopsis: if key(P1)!=trim(r[P3],P4) goto P2 */
#define OP_SorterData    121 /* synopsis: r[P2]=data                       */
#define OP_RowData       122 /* synopsis: r[P2]=data                       */
#define OP_Rowid         123 /* synopsis: r[P2]=rowid                      */
#define OP_NullRow       124
#define OP_SeekEnd       125
#define OP_SorterInsert  126 /* synopsis: key=r[P2]                        */
#define OP_IdxInsert     127 /* synopsis: key=r[P2]                        */
#define OP_IdxDelete     128 /* synopsis: key=r[P2@P3]                     */
#define OP_DeferredSeek  129 /* synopsis: Move P3 to P1.rowid if needed    */
#define OP_IdxRowid      130 /* synopsis: r[P2]=rowid                      */
#define OP_Destroy       131
#define OP_Real          132 /* same as TK_FLOAT, synopsis: r[P2]=P4       */

#define OP_Clear         133
#define OP_ResetSorter   134
#define OP_CreateBtree   135 /* synopsis: r[P2]=root iDb=P1 flags=P3       */
#define OP_SqlExec       136
#define OP_ParseSchema   137
#define OP_LoadAnalysis  138
#define OP_DropTable     139
#define OP_DropIndex     140
#define OP_DropTrigger   141
#define OP_IntegrityCk   142
#define OP_RowSetAdd     143 /* synopsis: rowset(P1)=r[P2]                 */
#define OP_Param         144
#define OP_FkCounter     145 /* synopsis: fkctr[P1]+=P2                    */
#define OP_MemMax        146 /* synopsis: r[P1]=max(r[P1],r[P2])           */
#define OP_OffsetLimit   147 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */
#define OP_AggStep0      148 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggStep       149 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggFinal      150 /* synopsis: accum=r[P1] N=P2                 */
#define OP_Expire        151
#define OP_TableLock     152 /* synopsis: iDb=P1 root=P2 write=P3          */
#define OP_VBegin        153
#define OP_VCreate       154
#define OP_VDestroy      155
#define OP_VOpen         156
#define OP_VColumn       157 /* synopsis: r[P3]=vcolumn(P2)                */
#define OP_VRename       158
#define OP_Pagecount     159
#define OP_MaxPgcnt      160
#define OP_PureFunc0     161
#define OP_Function0     162 /* synopsis: r[P3]=func(r[P2@P5])             */
#define OP_PureFunc      163
#define OP_Function      164 /* synopsis: r[P3]=func(r[P2@P5])             */

#define OP_CursorHint    165
#define OP_Noop          166
#define OP_Explain       167

/* Properties such as "out2" or "jump" that are specified in
** comments following the "case" for each opcode in the vdbe.c
** are encoded into bitvectors as follows:
*/
#define OPFLG_JUMP        0x01  /* jump:  P2 holds jmp target */
#define OPFLG_IN1         0x02  /* in1:   P1 is an input */
................................................................................
/*  40 */ 0x01, 0x01, 0x23, 0x26, 0x26, 0x0b, 0x01, 0x01,\
/*  48 */ 0x03, 0x03, 0x03, 0x03, 0x0b, 0x0b, 0x0b, 0x0b,\
/*  56 */ 0x0b, 0x0b, 0x01, 0x03, 0x01, 0x01, 0x01, 0x02,\
/*  64 */ 0x02, 0x08, 0x00, 0x10, 0x10, 0x10, 0x10, 0x00,\
/*  72 */ 0x10, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00,\
/*  80 */ 0x02, 0x02, 0x02, 0x00, 0x26, 0x26, 0x26, 0x26,\
/*  88 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x00, 0x12,\
/*  96 */ 0x00, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00,\
/* 104 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 112 */ 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00,\
/* 120 */ 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x04, 0x04,\
/* 128 */ 0x00, 0x00, 0x10, 0x10, 0x10, 0x00, 0x00, 0x10,\
/* 136 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06,\
/* 144 */ 0x10, 0x00, 0x04, 0x1a, 0x00, 0x00, 0x00, 0x00,\
/* 152 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,\
/* 160 */ 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
}


/* The sqlite3P2Values() routine is able to run faster if it knows
** the value of the largest JUMP opcode.  The smaller the maximum
** JUMP opcode the better, so the mkopcodeh.tcl script that
** generated this include file strives to group all JUMP opcodes
** together near the beginning of the list.
*/
................................................................................
  unsigned nProgressOps;        /* Number of opcodes for progress callback */
#endif
#ifndef SQLITE_OMIT_VIRTUALTABLE
  int nVTrans;                  /* Allocated size of aVTrans */
  Hash aModule;                 /* populated by sqlite3_create_module() */
  VtabCtx *pVtabCtx;            /* Context for active vtab connect/create */
  VTable **aVTrans;             /* Virtual tables with open transactions */
  VTable *pDisconnect;    /* Disconnect these in next sqlite3_prepare() */
#endif
  Hash aFunc;                   /* Hash table of connection functions */
  Hash aCollSeq;                /* All collating sequences */
  BusyHandler busyHandler;      /* Busy callback */
  Db aDbStatic[2];              /* Static space for the 2 default backends */
  Savepoint *pSavepoint;        /* List of active savepoints */
  int busyTimeout;              /* Busy handler timeout, in msec */
................................................................................
#define SQLITE_LoadExtension  0x00010000  /* Enable load_extension */
#define SQLITE_LoadExtFunc    0x00020000  /* Enable load_extension() SQL func */
#define SQLITE_EnableTrigger  0x00040000  /* True to enable triggers */
#define SQLITE_DeferFKs       0x00080000  /* Defer all FK constraints */
#define SQLITE_QueryOnly      0x00100000  /* Disable database changes */
#define SQLITE_CellSizeCk     0x00200000  /* Check btree cell sizes on load */
#define SQLITE_Fts3Tokenizer  0x00400000  /* Enable fts3_tokenizer(2) */
#define SQLITE_EnableQPSG     0x00800000  /* Query Planner Stability Guarantee */


/* Flags used only if debugging */
#ifdef SQLITE_DEBUG
#define SQLITE_SqlTrace       0x08000000  /* Debug print SQL as it executes */
#define SQLITE_VdbeListing    0x10000000  /* Debug listings of VDBE programs */
#define SQLITE_VdbeTrace      0x20000000  /* True to trace VDBE execution */
#define SQLITE_VdbeAddopTrace 0x40000000  /* Trace sqlite3VdbeAddOp() calls */
#define SQLITE_VdbeEQP        0x80000000  /* Debug EXPLAIN QUERY PLAN */
................................................................................
#define SQLITE_FUNC_COALESCE 0x0200 /* Built-in coalesce() or ifnull() */
#define SQLITE_FUNC_UNLIKELY 0x0400 /* Built-in unlikely() function */
#define SQLITE_FUNC_CONSTANT 0x0800 /* Constant inputs give a constant output */
#define SQLITE_FUNC_MINMAX   0x1000 /* True for min() and max() aggregates */
#define SQLITE_FUNC_SLOCHNG  0x2000 /* "Slow Change". Value constant during a
                                    ** single query - might change over time */
#define SQLITE_FUNC_AFFINITY 0x4000 /* Built-in affinity() function */


/*
** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are
** used to create the initializers for the FuncDef structures.
**
**   FUNCTION(zName, nArg, iArg, bNC, xFunc)
**     Used to create a scalar function definition of a function zName
................................................................................
  unsigned idxType:2;      /* 1==UNIQUE, 2==PRIMARY KEY, 0==CREATE INDEX */
  unsigned bUnordered:1;   /* Use this index for == or IN queries only */
  unsigned uniqNotNull:1;  /* True if UNIQUE and NOT NULL for all columns */
  unsigned isResized:1;    /* True if resizeIndexObject() has been called */
  unsigned isCovering:1;   /* True if this is a covering index */
  unsigned noSkipScan:1;   /* Do not try to use skip-scan if true */
  unsigned hasStat1:1;     /* aiRowLogEst values come from sqlite_stat1 */

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  int nSample;             /* Number of elements in aSample[] */
  int nSampleCol;          /* Size of IndexSample.anEq[] and so on */
  tRowcnt *aAvgEq;         /* Average nEq values for keys not in aSample */
  IndexSample *aSample;    /* Samples of the left-most key */
  tRowcnt *aiRowEst;       /* Non-logarithmic stat1 data for this index */
  tRowcnt nRowEst0;        /* Non-logarithmic number of rows in the index */
................................................................................
};

/*
** The following are the meanings of bits in the Expr.flags field.
*/
#define EP_FromJoin  0x000001 /* Originates in ON/USING clause of outer join */
#define EP_Agg       0x000002 /* Contains one or more aggregate functions */
                  /* 0x000004 // available for use */
                  /* 0x000008 // available for use */
#define EP_Distinct  0x000010 /* Aggregate function with DISTINCT keyword */
#define EP_VarSelect 0x000020 /* pSelect is correlated, not constant */
#define EP_DblQuoted 0x000040 /* token.z was originally in "..." */
#define EP_InfixFunc 0x000080 /* True for an infix function: LIKE, GLOB, etc */
#define EP_Collate   0x000100 /* Tree contains a TK_COLLATE operator */
#define EP_Generic   0x000200 /* Ignore COLLATE or affinity on this tree */
................................................................................
#define EP_ConstFunc 0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */
#define EP_CanBeNull 0x100000 /* Can be null despite NOT NULL constraint */
#define EP_Subquery  0x200000 /* Tree contains a TK_SELECT operator */
#define EP_Alias     0x400000 /* Is an alias for a result set column */
#define EP_Leaf      0x800000 /* Expr.pLeft, .pRight, .u.pSelect all NULL */

/*
** Combinations of two or more EP_* flags

*/
#define EP_Propagate (EP_Collate|EP_Subquery) /* Propagate these bits up tree */

/*
** These macros can be used to test, set, or clear bits in the
** Expr.flags field.
*/
#define ExprHasProperty(E,P)     (((E)->flags&(P))!=0)
#define ExprHasAllProperty(E,P)  (((E)->flags&(P))==(P))
................................................................................
        u16 iAlias;           /* Index into Parse.aAlias[] for zName */
      } x;
      int iConstExprReg;      /* Register in which Expr value is cached */
    } u;
  } a[1];                  /* One slot for each expression in the list */
};

/*
** An instance of this structure is used by the parser to record both
** the parse tree for an expression and the span of input text for an
** expression.
*/
struct ExprSpan {
  Expr *pExpr;          /* The expression parse tree */
  const char *zStart;   /* First character of input text */
  const char *zEnd;     /* One character past the end of input text */
};

/*
** An instance of this structure can hold a simple list of identifiers,
** such as the list "a,b,c" in the following statements:
**
**      INSERT INTO t(a,b,c) VALUES ...;
**      CREATE INDEX idx ON t(a,b,c);
**      CREATE TRIGGER trig BEFORE UPDATE ON t(a,b,c) ...;
................................................................................
#define NC_PartIdx   0x0002  /* True if resolving a partial index WHERE */
#define NC_IsCheck   0x0004  /* True if resolving names in a CHECK constraint */
#define NC_InAggFunc 0x0008  /* True if analyzing arguments to an agg func */
#define NC_HasAgg    0x0010  /* One or more aggregate functions seen */
#define NC_IdxExpr   0x0020  /* True if resolving columns of CREATE INDEX */
#define NC_VarSelect 0x0040  /* A correlated subquery has been seen */
#define NC_MinMaxAgg 0x1000  /* min/max aggregates seen.  See note above */


/*
** An instance of the following structure contains all information
** needed to generate code for a single SELECT statement.
**
** nLimit is set to -1 if there is no LIMIT clause.  nOffset is set to 0.
** If there is a LIMIT clause, the parser sets nLimit to the value of the
................................................................................
  Expr *pWhere;          /* The WHERE clause */
  ExprList *pGroupBy;    /* The GROUP BY clause */
  Expr *pHaving;         /* The HAVING clause */
  ExprList *pOrderBy;    /* The ORDER BY clause */
  Select *pPrior;        /* Prior select in a compound select statement */
  Select *pNext;         /* Next select to the left in a compound */
  Expr *pLimit;          /* LIMIT expression. NULL means not used. */
  Expr *pOffset;         /* OFFSET expression. NULL means not used. */
  With *pWith;           /* WITH clause attached to this select. Or NULL. */
};

/*
** Allowed values for Select.selFlags.  The "SF" prefix stands for
** "Select Flag".
**
................................................................................
#define SF_NestedFrom     0x00800  /* Part of a parenthesized FROM clause */
#define SF_MinMaxAgg      0x01000  /* Aggregate containing min() or max() */
#define SF_Recursive      0x02000  /* The recursive part of a recursive CTE */
#define SF_FixedLimit     0x04000  /* nSelectRow set by a constant LIMIT */
#define SF_MaybeConvert   0x08000  /* Need convertCompoundSelectToSubquery() */
#define SF_Converted      0x10000  /* By convertCompoundSelectToSubquery() */
#define SF_IncludeHidden  0x20000  /* Include hidden columns in output */



/*
** The results of a SELECT can be distributed in several ways, as defined
** by one of the following macros.  The "SRT" prefix means "SELECT Result
** Type".
**
................................................................................
  int nRangeReg;       /* Size of the temporary register block */
  int iRangeReg;       /* First register in temporary register block */
  int nErr;            /* Number of errors seen */
  int nTab;            /* Number of previously allocated VDBE cursors */
  int nMem;            /* Number of memory cells used so far */
  int nOpAlloc;        /* Number of slots allocated for Vdbe.aOp[] */
  int szOpAlloc;       /* Bytes of memory space allocated for Vdbe.aOp[] */
  int iSelfTab;        /* Table for associated with an index on expr, or negative
                       ** of the base register during check-constraint eval */
  int iCacheLevel;     /* ColCache valid when aColCache[].iLevel<=iCacheLevel */
  int iCacheCnt;       /* Counter used to generate aColCache[].lru values */
  int nLabel;          /* Number of labels used */
  int *aLabel;         /* Space to hold the labels */
  ExprList *pConstExpr;/* Constant expressions */
  Token constraintName;/* Name of the constraint currently being parsed */
................................................................................
  u8 orconf;           /* OE_Rollback etc. */
  Trigger *pTrig;      /* The trigger that this step is a part of */
  Select *pSelect;     /* SELECT statement or RHS of INSERT INTO SELECT ... */
  char *zTarget;       /* Target table for DELETE, UPDATE, INSERT */
  Expr *pWhere;        /* The WHERE clause for DELETE or UPDATE steps */
  ExprList *pExprList; /* SET clause for UPDATE. */
  IdList *pIdList;     /* Column names for INSERT */

  TriggerStep *pNext;  /* Next in the link-list */
  TriggerStep *pLast;  /* Last element in link-list. Valid for 1st elem only */
};

/*
** The following structure contains information used by the sqliteFix...
** routines as they walk the parse tree to make database references
................................................................................
/*
** The SQLITE_*_BKPT macros are substitutes for the error codes with
** the same name but without the _BKPT suffix.  These macros invoke
** routines that report the line-number on which the error originated
** using sqlite3_log().  The routines also provide a convenient place
** to set a debugger breakpoint.
*/

SQLITE_PRIVATE int sqlite3CorruptError(int);
SQLITE_PRIVATE int sqlite3MisuseError(int);
SQLITE_PRIVATE int sqlite3CantopenError(int);
#define SQLITE_CORRUPT_BKPT sqlite3CorruptError(__LINE__)
#define SQLITE_MISUSE_BKPT sqlite3MisuseError(__LINE__)
#define SQLITE_CANTOPEN_BKPT sqlite3CantopenError(__LINE__)
#ifdef SQLITE_DEBUG
................................................................................
SQLITE_PRIVATE void *sqlite3Malloc(u64);
SQLITE_PRIVATE void *sqlite3MallocZero(u64);
SQLITE_PRIVATE void *sqlite3DbMallocZero(sqlite3*, u64);
SQLITE_PRIVATE void *sqlite3DbMallocRaw(sqlite3*, u64);
SQLITE_PRIVATE void *sqlite3DbMallocRawNN(sqlite3*, u64);
SQLITE_PRIVATE char *sqlite3DbStrDup(sqlite3*,const char*);
SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3*,const char*, u64);

SQLITE_PRIVATE void *sqlite3Realloc(void*, u64);
SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *, void *, u64);
SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *, void *, u64);
SQLITE_PRIVATE void sqlite3DbFree(sqlite3*, void*);
SQLITE_PRIVATE void sqlite3DbFreeNN(sqlite3*, void*);
SQLITE_PRIVATE int sqlite3MallocSize(void*);
SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3*, void*);
................................................................................
SQLITE_PRIVATE void sqlite3StatusDown(int, int);
SQLITE_PRIVATE void sqlite3StatusHighwater(int, int);
SQLITE_PRIVATE int sqlite3LookasideUsed(sqlite3*,int*);

/* Access to mutexes used by sqlite3_status() */
SQLITE_PRIVATE sqlite3_mutex *sqlite3Pcache1Mutex(void);
SQLITE_PRIVATE sqlite3_mutex *sqlite3MallocMutex(void);







#ifndef SQLITE_OMIT_FLOATING_POINT
SQLITE_PRIVATE   int sqlite3IsNaN(double);
#else
# define sqlite3IsNaN(X)  0
#endif

................................................................................
SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*);
SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32);
SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3*, Expr*);
SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*);
SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*);
SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList*,int);
SQLITE_PRIVATE void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int);
SQLITE_PRIVATE void sqlite3ExprListSetSpan(Parse*,ExprList*,ExprSpan*);
SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3*, ExprList*);
SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList*);
SQLITE_PRIVATE int sqlite3Init(sqlite3*, char**);
SQLITE_PRIVATE int sqlite3InitCallback(void*, int, char**, char**);
SQLITE_PRIVATE void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);
#ifndef SQLITE_OMIT_VIRTUALTABLE
SQLITE_PRIVATE Module *sqlite3PragmaVtabRegister(sqlite3*,const char *zName);
................................................................................
#else
# define sqlite3ColumnPropertiesFromName(T,C) /* no-op */
#endif
SQLITE_PRIVATE void sqlite3AddColumn(Parse*,Token*,Token*);
SQLITE_PRIVATE void sqlite3AddNotNull(Parse*, int);
SQLITE_PRIVATE void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int);
SQLITE_PRIVATE void sqlite3AddCheckConstraint(Parse*, Expr*);
SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse*,ExprSpan*);
SQLITE_PRIVATE void sqlite3AddCollateType(Parse*, Token*);
SQLITE_PRIVATE void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*);
SQLITE_PRIVATE int sqlite3ParseUri(const char*,const char*,unsigned int*,
                    sqlite3_vfs**,char**,char **);
SQLITE_PRIVATE Btree *sqlite3DbNameToBtree(sqlite3*,const char*);

#ifdef SQLITE_UNTESTABLE
................................................................................
SQLITE_PRIVATE void sqlite3SrcListDelete(sqlite3*, SrcList*);
SQLITE_PRIVATE Index *sqlite3AllocateIndexObject(sqlite3*,i16,int,char**);
SQLITE_PRIVATE void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*,
                          Expr*, int, int, u8);
SQLITE_PRIVATE void sqlite3DropIndex(Parse*, SrcList*, int);
SQLITE_PRIVATE int sqlite3Select(Parse*, Select*, SelectDest*);
SQLITE_PRIVATE Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*,
                         Expr*,ExprList*,u32,Expr*,Expr*);
SQLITE_PRIVATE void sqlite3SelectDelete(sqlite3*, Select*);
SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse*, SrcList*);
SQLITE_PRIVATE int sqlite3IsReadOnly(Parse*, Table*, int);
SQLITE_PRIVATE void sqlite3OpenTable(Parse*, int iCur, int iDb, Table*, int);
#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY)
SQLITE_PRIVATE Expr *sqlite3LimitWhere(Parse*,SrcList*,Expr*,ExprList*,Expr*,Expr*,char*);
#endif
SQLITE_PRIVATE void sqlite3DeleteFrom(Parse*, SrcList*, Expr*);
SQLITE_PRIVATE void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int);
SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(Parse*,SrcList*,Expr*,ExprList*,ExprList*,u16,int);
SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo*);
SQLITE_PRIVATE LogEst sqlite3WhereOutputRowCount(WhereInfo*);
SQLITE_PRIVATE int sqlite3WhereIsDistinct(WhereInfo*);
SQLITE_PRIVATE int sqlite3WhereIsOrdered(WhereInfo*);
SQLITE_PRIVATE int sqlite3WhereOrderedInnerLoop(WhereInfo*);
SQLITE_PRIVATE int sqlite3WhereIsSorted(WhereInfo*);
................................................................................
SQLITE_PRIVATE void sqlite3RegisterDateTimeFunctions(void);
SQLITE_PRIVATE void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3*);
SQLITE_PRIVATE int sqlite3SafetyCheckOk(sqlite3*);
SQLITE_PRIVATE int sqlite3SafetyCheckSickOrOk(sqlite3*);
SQLITE_PRIVATE void sqlite3ChangeCookie(Parse*, int);

#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
SQLITE_PRIVATE void sqlite3MaterializeView(Parse*, Table*, Expr*, int);
#endif

#ifndef SQLITE_OMIT_TRIGGER
SQLITE_PRIVATE   void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*,
                           Expr*,int, int);
SQLITE_PRIVATE   void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*);
SQLITE_PRIVATE   void sqlite3DropTrigger(Parse*, SrcList*, int);
................................................................................
SQLITE_PRIVATE   Trigger *sqlite3TriggersExist(Parse *, Table*, int, ExprList*, int *pMask);
SQLITE_PRIVATE   Trigger *sqlite3TriggerList(Parse *, Table *);
SQLITE_PRIVATE   void sqlite3CodeRowTrigger(Parse*, Trigger *, int, ExprList*, int, Table *,
                            int, int, int);
SQLITE_PRIVATE   void sqlite3CodeRowTriggerDirect(Parse *, Trigger *, Table *, int, int, int);
  void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
SQLITE_PRIVATE   void sqlite3DeleteTriggerStep(sqlite3*, TriggerStep*);
SQLITE_PRIVATE   TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*);

SQLITE_PRIVATE   TriggerStep *sqlite3TriggerInsertStep(sqlite3*,Token*, IdList*,
                                        Select*,u8);
SQLITE_PRIVATE   TriggerStep *sqlite3TriggerUpdateStep(sqlite3*,Token*,ExprList*, Expr*, u8);

SQLITE_PRIVATE   TriggerStep *sqlite3TriggerDeleteStep(sqlite3*,Token*, Expr*);

SQLITE_PRIVATE   void sqlite3DeleteTrigger(sqlite3*, Trigger*);
SQLITE_PRIVATE   void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
SQLITE_PRIVATE   u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int);
# define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p))
# define sqlite3IsToplevel(p) ((p)->pToplevel==0)
#else
# define sqlite3TriggersExist(B,C,D,E,F) 0
................................................................................
  #define sqlite3ConnectionUnlocked(x)
  #define sqlite3ConnectionClosed(x)
#endif

#ifdef SQLITE_DEBUG
SQLITE_PRIVATE   void sqlite3ParserTrace(FILE*, char *);
#endif




/*
** If the SQLITE_ENABLE IOTRACE exists then the global variable
** sqlite3IoTrace is a pointer to a printf-like routine used to
** print I/O tracing messages.
*/
#ifdef SQLITE_ENABLE_IOTRACE
................................................................................
  FuncDef *pFunc;         /* Pointer to function information */
  Mem *pMem;              /* Memory cell used to store aggregate context */
  Vdbe *pVdbe;            /* The VM that owns this context */
  int iOp;                /* Instruction number of OP_Function */
  int isError;            /* Error code returned by the function. */
  u8 skipFlag;            /* Skip accumulator loading if true */
  u8 fErrorOrAux;         /* isError!=0 or pVdbe->pAuxData modified */

  u8 argc;                /* Number of arguments */
  sqlite3_value *argv[1]; /* Argument set */
};

/* A bitfield type for use inside of structures.  Always follow with :N where
** N is the number of bits.
*/
................................................................................
** dates afterwards, depending on locale.  Beware of this difference.
**
** The conversion algorithms are implemented based on descriptions
** in the following text:
**
**      Jean Meeus
**      Astronomical Algorithms, 2nd Edition, 1998
**      ISBM 0-943396-61-1
**      Willmann-Bell, Inc
**      Richmond, Virginia (USA)
*/
/* #include "sqliteInt.h" */
/* #include <stdlib.h> */
/* #include <assert.h> */
#include <time.h>
................................................................................
** allocate a mutex while the system is uninitialized.
*/
static SQLITE_WSD int mutexIsInit = 0;
#endif /* SQLITE_DEBUG && !defined(SQLITE_MUTEX_OMIT) */


#ifndef SQLITE_MUTEX_OMIT



























































































































































































/*
** Initialize the mutex system.
*/
SQLITE_PRIVATE int sqlite3MutexInit(void){ 
  int rc = SQLITE_OK;
  if( !sqlite3GlobalConfig.mutex.xMutexAlloc ){
    /* If the xMutexAlloc method has not been set, then the user did not
................................................................................
    ** sqlite3_initialize() being called. This block copies pointers to
    ** the default implementation into the sqlite3GlobalConfig structure.
    */
    sqlite3_mutex_methods const *pFrom;
    sqlite3_mutex_methods *pTo = &sqlite3GlobalConfig.mutex;

    if( sqlite3GlobalConfig.bCoreMutex ){



      pFrom = sqlite3DefaultMutex();

    }else{
      pFrom = sqlite3NoopMutex();
    }
    pTo->xMutexInit = pFrom->xMutexInit;
    pTo->xMutexEnd = pFrom->xMutexEnd;
    pTo->xMutexFree = pFrom->xMutexFree;
    pTo->xMutexEnter = pFrom->xMutexEnter;
................................................................................
SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex *p){
  assert( p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld );
  return p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld(p);
}
#endif

#endif /* !defined(SQLITE_MUTEX_OMIT) */


/************** End of mutex.c ***********************************************/
/************** Begin file mutex_noop.c **************************************/
/*
** 2008 October 07
**
** The author disclaims copyright to this source code.  In place of
................................................................................
  zNew = sqlite3DbMallocRawNN(db, n+1);
  if( zNew ){
    memcpy(zNew, z, (size_t)n);
    zNew[n] = 0;
  }
  return zNew;
}














/*
** Free any prior content in *pz and replace it with a copy of zNew.
*/
SQLITE_PRIVATE void sqlite3SetString(char **pz, sqlite3 *db, const char *zNew){
  sqlite3DbFree(db, *pz);
  *pz = sqlite3DbStrDup(db, zNew);
................................................................................
  StrAccum acc;
  char zBuf[500];
  sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
  va_start(ap,zFormat);
  sqlite3VXPrintf(&acc, zFormat, ap);
  va_end(ap);
  sqlite3StrAccumFinish(&acc);






  fprintf(stdout,"%s", zBuf);
  fflush(stdout);

}
#endif


/*
** variable-argument wrapper around sqlite3VXPrintf().  The bFlags argument
** can contain the bit SQLITE_PRINTF_INTERNAL enable internal formats.
................................................................................
      n = 0;
      if( p->pSrc && p->pSrc->nSrc ) n++;
      if( p->pWhere ) n++;
      if( p->pGroupBy ) n++;
      if( p->pHaving ) n++;
      if( p->pOrderBy ) n++;
      if( p->pLimit ) n++;
      if( p->pOffset ) n++;
    }
    sqlite3TreeViewExprList(pView, p->pEList, (n--)>0, "result-set");
    if( p->pSrc && p->pSrc->nSrc ){
      int i;
      pView = sqlite3TreeViewPush(pView, (n--)>0);
      sqlite3TreeViewLine(pView, "FROM");
      for(i=0; i<p->pSrc->nSrc; i++){
................................................................................
      sqlite3TreeViewPop(pView);
    }
    if( p->pOrderBy ){
      sqlite3TreeViewExprList(pView, p->pOrderBy, (n--)>0, "ORDERBY");
    }
    if( p->pLimit ){
      sqlite3TreeViewItem(pView, "LIMIT", (n--)>0);



      sqlite3TreeViewExpr(pView, p->pLimit, 0);
      sqlite3TreeViewPop(pView);
    }
    if( p->pOffset ){
      sqlite3TreeViewItem(pView, "OFFSET", (n--)>0);
      sqlite3TreeViewExpr(pView, p->pOffset, 0);
      sqlite3TreeViewPop(pView);
    }
    if( p->pPrior ){
      const char *zOp = "UNION";
      switch( p->op ){
        case TK_ALL:         zOp = "UNION ALL";  break;
        case TK_INTERSECT:   zOp = "INTERSECT";  break;
................................................................................
  if( pList==0 ){
    sqlite3TreeViewLine(pView, "%s (empty)", zLabel);
  }else{
    int i;
    sqlite3TreeViewLine(pView, "%s", zLabel);
    for(i=0; i<pList->nExpr; i++){
      int j = pList->a[i].u.x.iOrderByCol;

      if( j ){
        sqlite3TreeViewPush(pView, 0);





        sqlite3TreeViewLine(pView, "iOrderByCol=%d", j);
      }
      sqlite3TreeViewExpr(pView, pList->a[i].pExpr, i<pList->nExpr-1);

      if( j ) sqlite3TreeViewPop(pView);

    }
  }
}
SQLITE_PRIVATE void sqlite3TreeViewExprList(
  TreeView *pView,
  const ExprList *pList,
  u8 moreToFollow,
................................................................................
    return 1;
  }
  a = (unsigned char *)zLeft;
  b = (unsigned char *)zRight;
  while( N-- > 0 && *a!=0 && UpperToLower[*a]==UpperToLower[*b]){ a++; b++; }
  return N<0 ? 0 : UpperToLower[*a] - UpperToLower[*b];
}



















/*
** The string z[] is an text representation of a real number.
** Convert this string to a double and write it into *pResult.
**
** The string z[] is length bytes in length (bytes, not characters) and
** uses the encoding enc.  The string is not necessarily zero-terminated.
................................................................................
  }else if( *z=='+' ){
    z+=incr;
  }

  /* copy max significant digits to significand */
  while( z<zEnd && sqlite3Isdigit(*z) && s<((LARGEST_INT64-9)/10) ){
    s = s*10 + (*z - '0');
    z+=incr, nDigits++;
  }

  /* skip non-significant significand digits
  ** (increase exponent by d to shift decimal left) */
  while( z<zEnd && sqlite3Isdigit(*z) ) z+=incr, nDigits++, d++;
  if( z>=zEnd ) goto do_atof_calc;

  /* if decimal point is present */
  if( *z=='.' ){
    z+=incr;
    /* copy digits from after decimal to significand
    ** (decrease exponent by d to shift decimal right) */
    while( z<zEnd && sqlite3Isdigit(*z) ){
      if( s<((LARGEST_INT64-9)/10) ){
        s = s*10 + (*z - '0');
        d--;
      }
      z+=incr, nDigits++;
    }
  }
  if( z>=zEnd ) goto do_atof_calc;

  /* if exponent is present */
  if( *z=='e' || *z=='E' ){
    z+=incr;
................................................................................

    /* adjust the sign of significand */
    s = sign<0 ? -s : s;

    if( e==0 ){                                         /*OPTIMIZATION-IF-TRUE*/
      result = (double)s;
    }else{
      LONGDOUBLE_TYPE scale = 1.0;
      /* attempt to handle extremely small/large numbers better */
      if( e>307 ){                                      /*OPTIMIZATION-IF-TRUE*/
        if( e<342 ){                                    /*OPTIMIZATION-IF-TRUE*/
          while( e%308 ) { scale *= 1.0e+1; e -= 1; }
          if( esign<0 ){
            result = s / scale;
            result /= 1.0e+308;
          }else{
            result = s * scale;
            result *= 1.0e+308;
          }
................................................................................
            result = INFINITY*s;
#else
            result = 1e308*1e308*s;  /* Infinity */
#endif
          }
        }
      }else{
        /* 1.0e+22 is the largest power of 10 than can be 
        ** represented exactly. */
        while( e%22 ) { scale *= 1.0e+1; e -= 1; }
        while( e>0 ) { scale *= 1.0e+22; e -= 22; }
        if( esign<0 ){
          result = s / scale;
        }else{
          result = s * scale;
        }
      }
    }
................................................................................
    /*  89 */ "Subtract"         OpHelp("r[P3]=r[P2]-r[P1]"),
    /*  90 */ "Multiply"         OpHelp("r[P3]=r[P1]*r[P2]"),
    /*  91 */ "Divide"           OpHelp("r[P3]=r[P2]/r[P1]"),
    /*  92 */ "Remainder"        OpHelp("r[P3]=r[P2]%r[P1]"),
    /*  93 */ "Concat"           OpHelp("r[P3]=r[P2]+r[P1]"),
    /*  94 */ "Compare"          OpHelp("r[P1@P3] <-> r[P2@P3]"),
    /*  95 */ "BitNot"           OpHelp("r[P1]= ~r[P1]"),
    /*  96 */ "Column"           OpHelp("r[P3]=PX"),
    /*  97 */ "String8"          OpHelp("r[P2]='P4'"),

    /*  98 */ "Affinity"         OpHelp("affinity(r[P1@P2])"),
    /*  99 */ "MakeRecord"       OpHelp("r[P3]=mkrec(r[P1@P2])"),
    /* 100 */ "Count"            OpHelp("r[P2]=count()"),
    /* 101 */ "ReadCookie"       OpHelp(""),
    /* 102 */ "SetCookie"        OpHelp(""),
    /* 103 */ "ReopenIdx"        OpHelp("root=P2 iDb=P3"),
    /* 104 */ "OpenRead"         OpHelp("root=P2 iDb=P3"),
    /* 105 */ "OpenWrite"        OpHelp("root=P2 iDb=P3"),
    /* 106 */ "OpenDup"          OpHelp(""),
    /* 107 */ "OpenAutoindex"    OpHelp("nColumn=P2"),
    /* 108 */ "OpenEphemeral"    OpHelp("nColumn=P2"),
    /* 109 */ "SorterOpen"       OpHelp(""),
    /* 110 */ "SequenceTest"     OpHelp("if( cursor[P1].ctr++ ) pc = P2"),
    /* 111 */ "OpenPseudo"       OpHelp("P3 columns in r[P2]"),
    /* 112 */ "Close"            OpHelp(""),
    /* 113 */ "ColumnsUsed"      OpHelp(""),
    /* 114 */ "Sequence"         OpHelp("r[P2]=cursor[P1].ctr++"),
    /* 115 */ "NewRowid"         OpHelp("r[P2]=rowid"),
    /* 116 */ "Insert"           OpHelp("intkey=r[P3] data=r[P2]"),
    /* 117 */ "InsertInt"        OpHelp("intkey=P3 data=r[P2]"),
    /* 118 */ "Delete"           OpHelp(""),
    /* 119 */ "ResetCount"       OpHelp(""),
    /* 120 */ "SorterCompare"    OpHelp("if key(P1)!=trim(r[P3],P4) goto P2"),
    /* 121 */ "SorterData"       OpHelp("r[P2]=data"),
    /* 122 */ "RowData"          OpHelp("r[P2]=data"),
    /* 123 */ "Rowid"            OpHelp("r[P2]=rowid"),
    /* 124 */ "NullRow"          OpHelp(""),
    /* 125 */ "SeekEnd"          OpHelp(""),
    /* 126 */ "SorterInsert"     OpHelp("key=r[P2]"),
    /* 127 */ "IdxInsert"        OpHelp("key=r[P2]"),
    /* 128 */ "IdxDelete"        OpHelp("key=r[P2@P3]"),
    /* 129 */ "DeferredSeek"     OpHelp("Move P3 to P1.rowid if needed"),
    /* 130 */ "IdxRowid"         OpHelp("r[P2]=rowid"),
    /* 131 */ "Destroy"          OpHelp(""),
    /* 132 */ "Real"             OpHelp("r[P2]=P4"),

    /* 133 */ "Clear"            OpHelp(""),
    /* 134 */ "ResetSorter"      OpHelp(""),
    /* 135 */ "CreateBtree"      OpHelp("r[P2]=root iDb=P1 flags=P3"),
    /* 136 */ "SqlExec"          OpHelp(""),
    /* 137 */ "ParseSchema"      OpHelp(""),
    /* 138 */ "LoadAnalysis"     OpHelp(""),
    /* 139 */ "DropTable"        OpHelp(""),
    /* 140 */ "DropIndex"        OpHelp(""),
    /* 141 */ "DropTrigger"      OpHelp(""),
    /* 142 */ "IntegrityCk"      OpHelp(""),
    /* 143 */ "RowSetAdd"        OpHelp("rowset(P1)=r[P2]"),
    /* 144 */ "Param"            OpHelp(""),
    /* 145 */ "FkCounter"        OpHelp("fkctr[P1]+=P2"),
    /* 146 */ "MemMax"           OpHelp("r[P1]=max(r[P1],r[P2])"),
    /* 147 */ "OffsetLimit"      OpHelp("if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"),
    /* 148 */ "AggStep0"         OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 149 */ "AggStep"          OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 150 */ "AggFinal"         OpHelp("accum=r[P1] N=P2"),
    /* 151 */ "Expire"           OpHelp(""),
    /* 152 */ "TableLock"        OpHelp("iDb=P1 root=P2 write=P3"),
    /* 153 */ "VBegin"           OpHelp(""),
    /* 154 */ "VCreate"          OpHelp(""),
    /* 155 */ "VDestroy"         OpHelp(""),
    /* 156 */ "VOpen"            OpHelp(""),
    /* 157 */ "VColumn"          OpHelp("r[P3]=vcolumn(P2)"),
    /* 158 */ "VRename"          OpHelp(""),
    /* 159 */ "Pagecount"        OpHelp(""),
    /* 160 */ "MaxPgcnt"         OpHelp(""),
    /* 161 */ "PureFunc0"        OpHelp(""),
    /* 162 */ "Function0"        OpHelp("r[P3]=func(r[P2@P5])"),
    /* 163 */ "PureFunc"         OpHelp(""),
    /* 164 */ "Function"         OpHelp("r[P3]=func(r[P2@P5])"),

    /* 165 */ "CursorHint"       OpHelp(""),
    /* 166 */ "Noop"             OpHelp(""),
    /* 167 */ "Explain"          OpHelp(""),
  };
  return azName[i];
}
#endif

/************** End of opcodes.c *********************************************/
/************** Begin file os_unix.c *****************************************/
................................................................................
#define osMmap ((void*(*)(void*,size_t,int,int,int,off_t))aSyscall[22].pCurrent)

#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0
  { "munmap",       (sqlite3_syscall_ptr)munmap,          0 },
#else
  { "munmap",       (sqlite3_syscall_ptr)0,               0 },
#endif
#define osMunmap ((void*(*)(void*,size_t))aSyscall[23].pCurrent)

#if HAVE_MREMAP && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)
  { "mremap",       (sqlite3_syscall_ptr)mremap,          0 },
#else
  { "mremap",       (sqlite3_syscall_ptr)0,               0 },
#endif
#define osMremap ((void*(*)(void*,size_t,size_t,int,...))aSyscall[24].pCurrent)
................................................................................
#if defined(HAVE_LSTAT)
  { "lstat",         (sqlite3_syscall_ptr)lstat,          0 },
#else
  { "lstat",         (sqlite3_syscall_ptr)0,              0 },
#endif
#define osLstat      ((int(*)(const char*,struct stat*))aSyscall[27].pCurrent)


  { "ioctl",         (sqlite3_syscall_ptr)ioctl,          0 },



#define osIoctl ((int(*)(int,int,...))aSyscall[28].pCurrent)

}; /* End of the overrideable system calls */


/*
** On some systems, calls to fchown() will trigger a message in a security
................................................................................
  unixInodeInfo *pInode;     /* unixInodeInfo that owns this SHM node */
  sqlite3_mutex *mutex;      /* Mutex to access this object */
  char *zFilename;           /* Name of the mmapped file */
  int h;                     /* Open file descriptor */
  int szRegion;              /* Size of shared-memory regions */
  u16 nRegion;               /* Size of array apRegion */
  u8 isReadonly;             /* True if read-only */

  char **apRegion;           /* Array of mapped shared-memory regions */
  int nRef;                  /* Number of unixShm objects pointing to this */
  unixShm *pFirst;           /* All unixShm objects pointing to this */
#ifdef SQLITE_DEBUG
  u8 exclMask;               /* Mask of exclusive locks held */
  u8 sharedMask;             /* Mask of shared locks held */
  u8 nextShmId;              /* Next available unixShm.id value */
................................................................................
){
  unixShmNode *pShmNode; /* Apply locks to this open shared-memory segment */
  struct flock f;        /* The posix advisory locking structure */
  int rc = SQLITE_OK;    /* Result code form fcntl() */

  /* Access to the unixShmNode object is serialized by the caller */
  pShmNode = pFile->pInode->pShmNode;
  assert( sqlite3_mutex_held(pShmNode->mutex) || pShmNode->nRef==0 );

  /* Shared locks never span more than one byte */
  assert( n==1 || lockType!=F_RDLCK );

  /* Locks are within range */
  assert( n>=1 && n<=SQLITE_SHM_NLOCK );

................................................................................
      robust_close(pFd, p->h, __LINE__);
      p->h = -1;
    }
    p->pInode->pShmNode = 0;
    sqlite3_free(p);
  }
}



























































/*
** Open a shared-memory area associated with open database file pDbFd.  
** This particular implementation uses mmapped files.
**
** The file used to implement shared-memory is in the same directory
** as the open database file and has the same name as the open database
................................................................................
** that no other processes are able to read or write the database.  In
** that case, we do not really need shared memory.  No shared memory
** file is created.  The shared memory will be simulated with heap memory.
*/
static int unixOpenSharedMemory(unixFile *pDbFd){
  struct unixShm *p = 0;          /* The connection to be opened */
  struct unixShmNode *pShmNode;   /* The underlying mmapped file */
  int rc;                         /* Result code */
  unixInodeInfo *pInode;          /* The inode of fd */
  char *zShmFilename;             /* Name of the file used for SHM */
  int nShmFilename;               /* Size of the SHM filename in bytes */

  /* Allocate space for the new unixShm object. */
  p = sqlite3_malloc64( sizeof(*p) );
  if( p==0 ) return SQLITE_NOMEM_BKPT;
  memset(p, 0, sizeof(*p));
  assert( pDbFd->pShm==0 );
................................................................................
#endif
    pShmNode = sqlite3_malloc64( sizeof(*pShmNode) + nShmFilename );
    if( pShmNode==0 ){
      rc = SQLITE_NOMEM_BKPT;
      goto shm_open_err;
    }
    memset(pShmNode, 0, sizeof(*pShmNode)+nShmFilename);
    zShmFilename = pShmNode->zFilename = (char*)&pShmNode[1];
#ifdef SQLITE_SHM_DIRECTORY
    sqlite3_snprintf(nShmFilename, zShmFilename, 
                     SQLITE_SHM_DIRECTORY "/sqlite-shm-%x-%x",
                     (u32)sStat.st_ino, (u32)sStat.st_dev);
#else
    sqlite3_snprintf(nShmFilename, zShmFilename, "%s-shm", zBasePath);
    sqlite3FileSuffix3(pDbFd->zPath, zShmFilename);
#endif
    pShmNode->h = -1;
    pDbFd->pInode->pShmNode = pShmNode;
    pShmNode->pInode = pDbFd->pInode;
    if( sqlite3GlobalConfig.bCoreMutex ){
      pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
      if( pShmNode->mutex==0 ){
        rc = SQLITE_NOMEM_BKPT;
        goto shm_open_err;
      }
    }

    if( pInode->bProcessLock==0 ){
      int openFlags = O_RDWR | O_CREAT;
      if( sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){
        openFlags = O_RDONLY;
        pShmNode->isReadonly = 1;

      }

      pShmNode->h = robust_open(zShmFilename, openFlags, (sStat.st_mode&0777));
      if( pShmNode->h<0 ){
        rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShmFilename);
        goto shm_open_err;


      }

      /* If this process is running as root, make sure that the SHM file
      ** is owned by the same user that owns the original database.  Otherwise,
      ** the original owner will not be able to connect.
      */
      robustFchown(pShmNode->h, sStat.st_uid, sStat.st_gid);
  
      /* Check to see if another process is holding the dead-man switch.
      ** If not, truncate the file to zero length. 
      */
      rc = SQLITE_OK;
      if( unixShmSystemLock(pDbFd, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){
        if( robust_ftruncate(pShmNode->h, 0) ){
          rc = unixLogError(SQLITE_IOERR_SHMOPEN, "ftruncate", zShmFilename);
        }
      }
      if( rc==SQLITE_OK ){
        rc = unixShmSystemLock(pDbFd, F_RDLCK, UNIX_SHM_DMS, 1);
      }
      if( rc ) goto shm_open_err;
    }
  }

  /* Make the new connection a child of the unixShmNode */
  p->pShmNode = pShmNode;
#ifdef SQLITE_DEBUG
  p->id = pShmNode->nextShmId++;
................................................................................
  ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex 
  ** mutex.
  */
  sqlite3_mutex_enter(pShmNode->mutex);
  p->pNext = pShmNode->pFirst;
  pShmNode->pFirst = p;
  sqlite3_mutex_leave(pShmNode->mutex);
  return SQLITE_OK;

  /* Jump here on any error */
shm_open_err:
  unixShmPurge(pDbFd);       /* This call frees pShmNode if required */
  sqlite3_free(p);
  unixLeaveMutex();
  return rc;
................................................................................
    rc = unixOpenSharedMemory(pDbFd);
    if( rc!=SQLITE_OK ) return rc;
  }

  p = pDbFd->pShm;
  pShmNode = p->pShmNode;
  sqlite3_mutex_enter(pShmNode->mutex);





  assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 );
  assert( pShmNode->pInode==pDbFd->pInode );
  assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 );
  assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 );

  /* Minimum number of regions required to be mapped. */
  nReqRegion = ((iRegion+nShmPerMap) / nShmPerMap) * nShmPerMap;
................................................................................
  struct statfs fsInfo;
#endif

  /* If creating a master or main-file journal, this function will open
  ** a file-descriptor on the directory too. The first time unixSync()
  ** is called the directory file descriptor will be fsync()ed and close()d.
  */
  int syncDir = (isCreate && (
        eType==SQLITE_OPEN_MASTER_JOURNAL 
     || eType==SQLITE_OPEN_MAIN_JOURNAL 
     || eType==SQLITE_OPEN_WAL
  ));

  /* If argument zPath is a NULL pointer, this function is required to open
  ** a temporary file. Use this buffer to store the file name in.
................................................................................
    /* Database filenames are double-zero terminated if they are not
    ** URIs with parameters.  Hence, they can always be passed into
    ** sqlite3_uri_parameter(). */
    assert( (flags & SQLITE_OPEN_URI) || zName[strlen(zName)+1]==0 );

  }else if( !zName ){
    /* If zName is NULL, the upper layer is requesting a temp file. */
    assert(isDelete && !syncDir);
    rc = unixGetTempname(pVfs->mxPathname, zTmpname);
    if( rc!=SQLITE_OK ){
      return rc;
    }
    zName = zTmpname;

    /* Generated temporary filenames are always double-zero terminated
................................................................................
      assert( !p->pPreallocatedUnused );
      assert( eType==SQLITE_OPEN_WAL || eType==SQLITE_OPEN_MAIN_JOURNAL );
      return rc;
    }
    fd = robust_open(zName, openFlags, openMode);
    OSTRACE(("OPENX   %-3d %s 0%o\n", fd, zName, openFlags));
    assert( !isExclusive || (openFlags & O_CREAT)!=0 );





    if( fd<0 && errno!=EISDIR && isReadWrite ){
      /* Failed to open the file for read/write access. Try read-only. */
      flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
      openFlags &= ~(O_RDWR|O_CREAT);
      flags |= SQLITE_OPEN_READONLY;
      openFlags |= O_RDONLY;
      isReadonly = 1;
      fd = robust_open(zName, openFlags, openMode);
    }

    if( fd<0 ){
      rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zName);

      goto open_finished;
    }

    /* If this process is running as root and if creating a new rollback
    ** journal or WAL file, set the ownership of the journal or WAL to be
    ** the same as the original database.
    */
................................................................................
#endif

  /* Set up appropriate ctrlFlags */
  if( isDelete )                ctrlFlags |= UNIXFILE_DELETE;
  if( isReadonly )              ctrlFlags |= UNIXFILE_RDONLY;
  noLock = eType!=SQLITE_OPEN_MAIN_DB;
  if( noLock )                  ctrlFlags |= UNIXFILE_NOLOCK;
  if( syncDir )                 ctrlFlags |= UNIXFILE_DIRSYNC;
  if( flags & SQLITE_OPEN_URI ) ctrlFlags |= UNIXFILE_URI;

#if SQLITE_ENABLE_LOCKING_STYLE
#if SQLITE_PREFER_PROXY_LOCKING
  isAutoProxy = 1;
#endif
  if( isAutoProxy && (zPath!=NULL) && (!noLock) && pVfs->xOpen ){
................................................................................
struct winShmNode {
  sqlite3_mutex *mutex;      /* Mutex to access this object */
  char *zFilename;           /* Name of the file */
  winFile hFile;             /* File handle from winOpen */

  int szRegion;              /* Size of shared-memory regions */
  int nRegion;               /* Size of array apRegion */



  struct ShmRegion {
    HANDLE hMap;             /* File handle from CreateFileMapping */
    void *pMap;
  } *aRegion;
  DWORD lastErrno;           /* The Windows errno from the last I/O error */

  int nRef;                  /* Number of winShm objects pointing to this */
................................................................................
  int lockType,         /* WINSHM_UNLCK, WINSHM_RDLCK, or WINSHM_WRLCK */
  int ofst,             /* Offset to first byte to be locked/unlocked */
  int nByte             /* Number of bytes to lock or unlock */
){
  int rc = 0;           /* Result code form Lock/UnlockFileEx() */

  /* Access to the winShmNode object is serialized by the caller */
  assert( sqlite3_mutex_held(pFile->mutex) || pFile->nRef==0 );

  OSTRACE(("SHM-LOCK file=%p, lock=%d, offset=%d, size=%d\n",
           pFile->hFile.h, lockType, ofst, nByte));

  /* Release/Acquire the system-level lock */
  if( lockType==WINSHM_UNLCK ){
    rc = winUnlockFile(&pFile->hFile.h, ofst, 0, nByte, 0);
................................................................................
      sqlite3_free(p->aRegion);
      sqlite3_free(p);
    }else{
      pp = &p->pNext;
    }
  }
}
































/*
** Open the shared-memory area associated with database file pDbFd.
**
** When opening a new shared-memory file, if no other instances of that
** file are currently open, in this process or in other processes, then
** the file must be truncated to zero length or have its header cleared.
*/
static int winOpenSharedMemory(winFile *pDbFd){
  struct winShm *p;                  /* The connection to be opened */
  struct winShmNode *pShmNode = 0;   /* The underlying mmapped file */
  int rc;                            /* Result code */

  struct winShmNode *pNew;           /* Newly allocated winShmNode */
  int nName;                         /* Size of zName in bytes */

  assert( pDbFd->pShm==0 );    /* Not previously opened */

  /* Allocate space for the new sqlite3_shm object.  Also speculatively
  ** allocate space for a new winShmNode and filename.
  */
................................................................................
      pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
      if( pShmNode->mutex==0 ){
        rc = SQLITE_IOERR_NOMEM_BKPT;
        goto shm_open_err;
      }
    }

    rc = winOpen(pDbFd->pVfs,
                 pShmNode->zFilename,             /* Name of the file (UTF-8) */
                 (sqlite3_file*)&pShmNode->hFile,  /* File handle here */
                 SQLITE_OPEN_WAL | SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
                 0);
    if( SQLITE_OK!=rc ){
      goto shm_open_err;
    }

    /* Check to see if another process is holding the dead-man switch.
    ** If not, truncate the file to zero length.
    */
    if( winShmSystemLock(pShmNode, WINSHM_WRLCK, WIN_SHM_DMS, 1)==SQLITE_OK ){
      rc = winTruncate((sqlite3_file *)&pShmNode->hFile, 0);
      if( rc!=SQLITE_OK ){
        rc = winLogError(SQLITE_IOERR_SHMOPEN, osGetLastError(),
                         "winOpenShm", pDbFd->zPath);
      }
    }
    if( rc==SQLITE_OK ){
      winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1);
      rc = winShmSystemLock(pShmNode, WINSHM_RDLCK, WIN_SHM_DMS, 1);
    }
    if( rc ) goto shm_open_err;
  }

  /* Make the new connection a child of the winShmNode */
  p->pShmNode = pShmNode;
#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE)
  p->id = pShmNode->nextShmId++;
#endif
................................................................................
  ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex
  ** mutex.
  */
  sqlite3_mutex_enter(pShmNode->mutex);
  p->pNext = pShmNode->pFirst;
  pShmNode->pFirst = p;
  sqlite3_mutex_leave(pShmNode->mutex);
  return SQLITE_OK;

  /* Jump here on any error */
shm_open_err:
  winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1);
  winShmPurge(pDbFd->pVfs, 0);      /* This call frees pShmNode if required */
  sqlite3_free(p);
  sqlite3_free(pNew);
................................................................................
  int szRegion,                   /* Size of regions */
  int isWrite,                    /* True to extend file if necessary */
  void volatile **pp              /* OUT: Mapped memory */
){
  winFile *pDbFd = (winFile*)fd;
  winShm *pShm = pDbFd->pShm;
  winShmNode *pShmNode;


  int rc = SQLITE_OK;

  if( !pShm ){
    rc = winOpenSharedMemory(pDbFd);
    if( rc!=SQLITE_OK ) return rc;
    pShm = pDbFd->pShm;
  }
  pShmNode = pShm->pShmNode;

  sqlite3_mutex_enter(pShmNode->mutex);





  assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 );

  if( pShmNode->nRegion<=iRegion ){
    struct ShmRegion *apNew;           /* New aRegion[] array */
    int nByte = (iRegion+1)*szRegion;  /* Minimum required file size */
    sqlite3_int64 sz;                  /* Current size of wal-index file */

................................................................................
        pShmNode->aRegion, (iRegion+1)*sizeof(apNew[0])
    );
    if( !apNew ){
      rc = SQLITE_IOERR_NOMEM_BKPT;
      goto shmpage_out;
    }
    pShmNode->aRegion = apNew;






    while( pShmNode->nRegion<=iRegion ){
      HANDLE hMap = NULL;         /* file-mapping handle */
      void *pMap = 0;             /* Mapped memory region */

#if SQLITE_OS_WINRT
      hMap = osCreateFileMappingFromApp(pShmNode->hFile.h,
          NULL, PAGE_READWRITE, nByte, NULL
      );
#elif defined(SQLITE_WIN32_HAS_WIDE)
      hMap = osCreateFileMappingW(pShmNode->hFile.h,
          NULL, PAGE_READWRITE, 0, nByte, NULL
      );
#elif defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_CREATEFILEMAPPINGA
      hMap = osCreateFileMappingA(pShmNode->hFile.h,
          NULL, PAGE_READWRITE, 0, nByte, NULL
      );
#endif
      OSTRACE(("SHM-MAP-CREATE pid=%lu, region=%d, size=%d, rc=%s\n",
               osGetCurrentProcessId(), pShmNode->nRegion, nByte,
               hMap ? "ok" : "failed"));
      if( hMap ){
        int iOffset = pShmNode->nRegion*szRegion;
        int iOffsetShift = iOffset % winSysInfo.dwAllocationGranularity;
#if SQLITE_OS_WINRT
        pMap = osMapViewOfFileFromApp(hMap, FILE_MAP_WRITE | FILE_MAP_READ,
            iOffset - iOffsetShift, szRegion + iOffsetShift
        );
#else
        pMap = osMapViewOfFile(hMap, FILE_MAP_WRITE | FILE_MAP_READ,
            0, iOffset - iOffsetShift, szRegion + iOffsetShift
        );
#endif
        OSTRACE(("SHM-MAP-MAP pid=%lu, region=%d, offset=%d, size=%d, rc=%s\n",
                 osGetCurrentProcessId(), pShmNode->nRegion, iOffset,
                 szRegion, pMap ? "ok" : "failed"));
      }
................................................................................
    int iOffset = iRegion*szRegion;
    int iOffsetShift = iOffset % winSysInfo.dwAllocationGranularity;
    char *p = (char *)pShmNode->aRegion[iRegion].pMap;
    *pp = (void *)&p[iOffsetShift];
  }else{
    *pp = 0;
  }

  sqlite3_mutex_leave(pShmNode->mutex);
  return rc;
}

#else
# define winShmMap     0
# define winShmLock    0
................................................................................

/*
** Make sure the page is marked as clean. If it isn't clean already,
** make it so.
*/
SQLITE_PRIVATE void sqlite3PcacheMakeClean(PgHdr *p){
  assert( sqlite3PcachePageSanity(p) );
  if( ALWAYS((p->flags & PGHDR_DIRTY)!=0) ){
    assert( (p->flags & PGHDR_CLEAN)==0 );
    pcacheManageDirtyList(p, PCACHE_DIRTYLIST_REMOVE);
    p->flags &= ~(PGHDR_DIRTY|PGHDR_NEED_SYNC|PGHDR_WRITEABLE);
    p->flags |= PGHDR_CLEAN;
    pcacheTrace(("%p.CLEAN %d\n",p->pCache,p->pgno));
    assert( sqlite3PcachePageSanity(p) );
    if( p->nRef==0 ){
      pcacheUnpin(p);
    }
  }
}

/*
** Make every page in the cache clean.
*/
SQLITE_PRIVATE void sqlite3PcacheCleanAll(PCache *pCache){
................................................................................
    );
    if( rc==SQLITE_OK && pData ){
      if( pPager->eState>PAGER_READER || pPager->tempFile ){
        pPg = sqlite3PagerLookup(pPager, pgno);
      }
      if( pPg==0 ){
        rc = pagerAcquireMapPage(pPager, pgno, pData, &pPg);
     }else{
        sqlite3OsUnfetch(pPager->fd, (i64)(pgno-1)*pPager->pageSize, pData);
      }
      if( pPg ){
        assert( rc==SQLITE_OK );
        *ppPage = pPg;
        return SQLITE_OK;
      }
................................................................................
** WAL-INDEX FORMAT
**
** Conceptually, the wal-index is shared memory, though VFS implementations
** might choose to implement the wal-index using a mmapped file.  Because
** the wal-index is shared memory, SQLite does not support journal_mode=WAL 
** on a network filesystem.  All users of the database must be able to
** share memory.




**
** The wal-index is transient.  After a crash, the wal-index can (and should
** be) reconstructed from the original WAL file.  In fact, the VFS is required
** to either truncate or zero the header of the wal-index when the last
** connection to it closes.  Because the wal-index is transient, it can
** use an architecture-specific format; it does not have to be cross-platform.
** Hence, unlike the database and WAL file formats which store all values
................................................................................
** WALINDEX_MAX_VERSION, then no read-transaction is opened and SQLite
** returns SQLITE_CANTOPEN.
*/
#define WAL_MAX_VERSION      3007000
#define WALINDEX_MAX_VERSION 3007000

/*
** Indices of various locking bytes.   WAL_NREADER is the number
** of available reader locks and should be at least 3.  The default
** is SQLITE_SHM_NLOCK==8 and  WAL_NREADER==5.









*/
#define WAL_WRITE_LOCK         0
#define WAL_ALL_BUT_WRITE      1
#define WAL_CKPT_LOCK          1
#define WAL_RECOVER_LOCK       2
#define WAL_READ_LOCK(I)       (3+(I))
#define WAL_NREADER            (SQLITE_SHM_NLOCK-3)
................................................................................
#define WALINDEX_LOCK_OFFSET (sizeof(WalIndexHdr)*2+offsetof(WalCkptInfo,aLock))
#define WALINDEX_HDR_SIZE    (sizeof(WalIndexHdr)*2+sizeof(WalCkptInfo))

/* Size of header before each frame in wal */
#define WAL_FRAME_HDRSIZE 24

/* Size of write ahead log header, including checksum. */
/* #define WAL_HDRSIZE 24 */
#define WAL_HDRSIZE 32

/* WAL magic value. Either this value, or the same value with the least
** significant bit also set (WAL_MAGIC | 0x00000001) is stored in 32-bit
** big-endian format in the first 4 bytes of a WAL file.
**
** If the LSB is set, then the checksums for each frame within the WAL
................................................................................
  u8 exclusiveMode;          /* Non-zero if connection is in exclusive mode */
  u8 writeLock;              /* True if in a write transaction */
  u8 ckptLock;               /* True if holding a checkpoint lock */
  u8 readOnly;               /* WAL_RDWR, WAL_RDONLY, or WAL_SHM_RDONLY */
  u8 truncateOnCommit;       /* True to truncate WAL file on commit */
  u8 syncHeader;             /* Fsync the WAL header if true */
  u8 padToSectorBoundary;    /* Pad transactions out to the next sector */

  WalIndexHdr hdr;           /* Wal-index header for current transaction */
  u32 minFrame;              /* Ignore wal frames before this one */
  u32 iReCksum;              /* On commit, recalculate checksums from here */
  const char *zWalName;      /* Name of WAL file */
  u32 nCkpt;                 /* Checkpoint sequence counter in the wal-header */
#ifdef SQLITE_DEBUG
  u8 lockError;              /* True if a locking error has occurred */
................................................................................
    sizeof(ht_slot)*HASHTABLE_NSLOT + HASHTABLE_NPAGE*sizeof(u32) \
)

/*
** Obtain a pointer to the iPage'th page of the wal-index. The wal-index
** is broken into pages of WALINDEX_PGSZ bytes. Wal-index pages are
** numbered from zero.





**
** If this call is successful, *ppPage is set to point to the wal-index
** page and SQLITE_OK is returned. If an error (an OOM or VFS error) occurs,
** then an SQLite error code is returned and *ppPage is set to 0.
*/
static int walIndexPage(Wal *pWal, int iPage, volatile u32 **ppPage){
  int rc = SQLITE_OK;
................................................................................
    if( pWal->exclusiveMode==WAL_HEAPMEMORY_MODE ){
      pWal->apWiData[iPage] = (u32 volatile *)sqlite3MallocZero(WALINDEX_PGSZ);
      if( !pWal->apWiData[iPage] ) rc = SQLITE_NOMEM_BKPT;
    }else{
      rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ, 
          pWal->writeLock, (void volatile **)&pWal->apWiData[iPage]
      );


      if( rc==SQLITE_READONLY ){
        pWal->readOnly |= WAL_SHM_RDONLY;

        rc = SQLITE_OK;

      }
    }
  }

  *ppPage = pWal->apWiData[iPage];
  assert( iPage==0 || *ppPage || rc!=SQLITE_OK );
  return rc;
................................................................................
** the necessary locks, this routine returns SQLITE_BUSY.
*/
static int walIndexRecover(Wal *pWal){
  int rc;                         /* Return Code */
  i64 nSize;                      /* Size of log file */
  u32 aFrameCksum[2] = {0, 0};
  int iLock;                      /* Lock offset to lock for checkpoint */
  int nLock;                      /* Number of locks to hold */

  /* Obtain an exclusive lock on all byte in the locking range not already
  ** locked by the caller. The caller is guaranteed to have locked the
  ** WAL_WRITE_LOCK byte, and may have also locked the WAL_CKPT_LOCK byte.
  ** If successful, the same bytes that are locked here are unlocked before
  ** this function returns.
  */
  assert( pWal->ckptLock==1 || pWal->ckptLock==0 );
  assert( WAL_ALL_BUT_WRITE==WAL_WRITE_LOCK+1 );
  assert( WAL_CKPT_LOCK==WAL_ALL_BUT_WRITE );
  assert( pWal->writeLock );
  iLock = WAL_ALL_BUT_WRITE + pWal->ckptLock;
  nLock = SQLITE_SHM_NLOCK - iLock;
  rc = walLockExclusive(pWal, iLock, nLock);






  if( rc ){
    return rc;
  }

  WALTRACE(("WAL%p: recovery begin...\n", pWal));

  memset(&pWal->hdr, 0, sizeof(WalIndexHdr));

  rc = sqlite3OsFileSize(pWal->pWalFd, &nSize);
  if( rc!=SQLITE_OK ){
    goto recovery_error;
................................................................................
          pWal->hdr.mxFrame, pWal->zWalName
      );
    }
  }

recovery_error:
  WALTRACE(("WAL%p: recovery %s\n", pWal, rc ? "failed" : "ok"));
  walUnlockExclusive(pWal, iLock, nLock);

  return rc;
}

/*
** Close an open wal-index.
*/
static void walIndexClose(Wal *pWal, int isDelete){
  if( pWal->exclusiveMode==WAL_HEAPMEMORY_MODE ){
    int i;
    for(i=0; i<pWal->nWiData; i++){
      sqlite3_free((void *)pWal->apWiData[i]);
      pWal->apWiData[i] = 0;
    }
  }else{

    sqlite3OsShmUnmap(pWal->pDbFd, isDelete);
  }
}

/* 
** Open a connection to the WAL file zWalName. The database file must 
** already be opened on connection pDbFd. The buffer that zWalName points
................................................................................
    testcase( pWal->szPage>=65536 );
  }

  /* The header was successfully read. Return zero. */
  return 0;
}







/*
** Read the wal-index header from the wal-index and into pWal->hdr.
** If the wal-header appears to be corrupt, try to reconstruct the
** wal-index from the WAL before returning.
**
** Set *pChanged to 1 if the wal-index header value in pWal->hdr is
** changed by this operation.  If pWal->hdr is unchanged, set *pChanged
................................................................................

  /* Ensure that page 0 of the wal-index (the page that contains the 
  ** wal-index header) is mapped. Return early if an error occurs here.
  */
  assert( pChanged );
  rc = walIndexPage(pWal, 0, &page0);
  if( rc!=SQLITE_OK ){
    return rc;
  };








  assert( page0 || pWal->writeLock==0 );














  /* If the first page of the wal-index has been mapped, try to read the
  ** wal-index header immediately, without holding any lock. This usually
  ** works, but may fail if the wal-index header is corrupt or currently 
  ** being modified by another thread or process.
  */
  badHdr = (page0 ? walIndexTryHdr(pWal, pChanged) : 1);

  /* If the first attempt failed, it might have been due to a race
  ** with a writer.  So get a WRITE lock and try again.
  */
  assert( badHdr==0 || pWal->writeLock==0 );
  if( badHdr ){
    if( pWal->readOnly & WAL_SHM_RDONLY ){
      if( SQLITE_OK==(rc = walLockShared(pWal, WAL_WRITE_LOCK)) ){
        walUnlockShared(pWal, WAL_WRITE_LOCK);
        rc = SQLITE_READONLY_RECOVERY;
      }
    }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){
      pWal->writeLock = 1;
      if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
................................................................................
  /* If the header is read successfully, check the version number to make
  ** sure the wal-index was not constructed with some future format that
  ** this version of SQLite cannot understand.
  */
  if( badHdr==0 && pWal->hdr.iVersion!=WALINDEX_MAX_VERSION ){
    rc = SQLITE_CANTOPEN_BKPT;
  }













  return rc;
}

/*
** This is the value that walTryBeginRead returns when it needs to
** be retried.

























*/
























































































#define WAL_RETRY  (-1)
























































/*
** Attempt to start a read transaction.  This might fail due to a race or
** other transient condition.  When that happens, it returns WAL_RETRY to
** indicate to the caller that it is safe to retry immediately.
**
** On success return SQLITE_OK.  On a permanent failure (such an
................................................................................
** recovery) return a positive error code.
**
** The useWal parameter is true to force the use of the WAL and disable
** the case where the WAL is bypassed because it has been completely
** checkpointed.  If useWal==0 then this routine calls walIndexReadHdr() 
** to make a copy of the wal-index header into pWal->hdr.  If the 
** wal-index header has changed, *pChanged is set to 1 (as an indication 
** to the caller that the local paget cache is obsolete and needs to be 
** flushed.)  When useWal==1, the wal-index header is assumed to already
** be loaded and the pChanged parameter is unused.
**
** The caller must set the cnt parameter to the number of prior calls to
** this routine during the current read attempt that returned WAL_RETRY.
** This routine will start taking more aggressive measures to clear the
** race conditions after multiple WAL_RETRY returns, and after an excessive
................................................................................
  int mxI;                        /* Index of largest aReadMark[] value */
  int i;                          /* Loop counter */
  int rc = SQLITE_OK;             /* Return code  */
  u32 mxFrame;                    /* Wal frame to lock to */

  assert( pWal->readLock<0 );     /* Not currently locked */




  /* Take steps to avoid spinning forever if there is a protocol error.
  **
  ** Circumstances that cause a RETRY should only last for the briefest
  ** instances of time.  No I/O or other system calls are done while the
  ** locks are held, so the locks should not be held for very long. But 
  ** if we are unlucky, another process that is holding a lock might get
  ** paged out or take a page-fault that is time-consuming to resolve, 
................................................................................
      return SQLITE_PROTOCOL;
    }
    if( cnt>=10 ) nDelay = (cnt-9)*(cnt-9)*39;
    sqlite3OsSleep(pWal->pVfs, nDelay);
  }

  if( !useWal ){


    rc = walIndexReadHdr(pWal, pChanged);

    if( rc==SQLITE_BUSY ){
      /* If there is not a recovery running in another thread or process
      ** then convert BUSY errors to WAL_RETRY.  If recovery is known to
      ** be running, convert BUSY to BUSY_RECOVERY.  There is a race here
      ** which might cause WAL_RETRY to be returned even if BUSY_RECOVERY
      ** would be technically correct.  But the race is benign since with
      ** WAL_RETRY this routine will be called again and will probably be
................................................................................
      }else if( rc==SQLITE_BUSY ){
        rc = SQLITE_BUSY_RECOVERY;
      }
    }
    if( rc!=SQLITE_OK ){
      return rc;
    }


  }




  pInfo = walCkptInfo(pWal);
  if( !useWal && pInfo->nBackfill==pWal->hdr.mxFrame 
#ifdef SQLITE_ENABLE_SNAPSHOT
   && (pWal->pSnapshot==0 || pWal->hdr.mxFrame==0
     || 0==memcmp(&pWal->hdr, pWal->pSnapshot, sizeof(WalIndexHdr)))
#endif
  ){
    /* The WAL has been completely backfilled (or it is empty).
    ** and can be safely ignored.
    */
    rc = walLockShared(pWal, WAL_READ_LOCK(0));
    walShmBarrier(pWal);
................................................................................
      }else if( rc!=SQLITE_BUSY ){
        return rc;
      }
    }
  }
  if( mxI==0 ){
    assert( rc==SQLITE_BUSY || (pWal->readOnly & WAL_SHM_RDONLY)!=0 );
    return rc==SQLITE_BUSY ? WAL_RETRY : SQLITE_READONLY_CANTLOCK;
  }

  rc = walLockShared(pWal, WAL_READ_LOCK(mxI));
  if( rc ){
    return rc==SQLITE_BUSY ? WAL_RETRY : rc;
  }
  /* Now that the read-lock has been obtained, check that neither the
................................................................................

  /* If the "last page" field of the wal-index header snapshot is 0, then
  ** no data will be read from the wal under any circumstances. Return early
  ** in this case as an optimization.  Likewise, if pWal->readLock==0, 
  ** then the WAL is ignored by the reader so return early, as if the 
  ** WAL were empty.
  */
  if( iLast==0 || pWal->readLock==0 ){
    *piRead = 0;
    return SQLITE_OK;
  }

  /* Search the hash table or tables for an entry matching page number
  ** pgno. Each iteration of the following for() loop searches one
  ** hash table (each hash table indexes up to HASHTABLE_NPAGE frames).
................................................................................
#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT
  /* If expensive assert() statements are available, do a linear search
  ** of the wal-index file content. Make sure the results agree with the
  ** result obtained using the hash indexes above.  */
  {
    u32 iRead2 = 0;
    u32 iTest;
    assert( pWal->minFrame>0 );
    for(iTest=iLast; iTest>=pWal->minFrame; iTest--){
      if( walFramePgno(pWal, iTest)==pgno ){
        iRead2 = iTest;
        break;
      }
    }
    assert( iRead==iRead2 );
  }
................................................................................
  ** locks are taken in this case). Nor should the pager attempt to
  ** upgrade to exclusive-mode following such an error.
  */
  assert( pWal->readLock>=0 || pWal->lockError );
  assert( pWal->readLock>=0 || (op<=0 && pWal->exclusiveMode==0) );

  if( op==0 ){
    if( pWal->exclusiveMode ){
      pWal->exclusiveMode = 0;
      if( walLockShared(pWal, WAL_READ_LOCK(pWal->readLock))!=SQLITE_OK ){
        pWal->exclusiveMode = 1;
      }
      rc = pWal->exclusiveMode==0;
    }else{
      /* Already in locking_mode=NORMAL */
      rc = 0;
    }
  }else if( op>0 ){
    assert( pWal->exclusiveMode==0 );
    assert( pWal->readLock>=0 );
    walUnlockShared(pWal, WAL_READ_LOCK(pWal->readLock));
    pWal->exclusiveMode = 1;
    rc = 1;
  }else{
    rc = pWal->exclusiveMode==0;
  }
  return rc;
}

/* 
** Return true if the argument is non-NULL and the WAL module is using
** heap-memory for the wal-index. Otherwise, if the argument is NULL or the
................................................................................
  #define setSharedCacheTableLock(a,b,c) SQLITE_OK
  #define clearAllSharedCacheTableLocks(a)
  #define downgradeAllSharedCacheTableLocks(a)
  #define hasSharedCacheTableLock(a,b,c,d) 1
  #define hasReadConflicts(a, b) 0
#endif


























#ifndef SQLITE_OMIT_SHARED_CACHE

#ifdef SQLITE_DEBUG
/*
**** This function is only used as part of an assert() statement. ***
**
** Check to see if pBtree holds the required locks to read or write to the 
................................................................................
      if( 0==iFree2 || (data[iFree2]==0 && data[iFree2+1]==0) ){
        u8 *pEnd = &data[cellOffset + nCell*2];
        u8 *pAddr;
        int sz2 = 0;
        int sz = get2byte(&data[iFree+2]);
        int top = get2byte(&data[hdr+5]);
        if( top>=iFree ){
          return SQLITE_CORRUPT_PGNO(pPage->pgno);
        }
        if( iFree2 ){
          assert( iFree+sz<=iFree2 ); /* Verified by pageFindSlot() */
          sz2 = get2byte(&data[iFree2+2]);
          assert( iFree+sz+sz2+iFree2-(iFree+sz) <= usableSize );
          memmove(&data[iFree+sz+sz2], &data[iFree+sz], iFree2-(iFree+sz));
          sz += sz2;
................................................................................
    pc = get2byte(pAddr);
    testcase( pc==iCellFirst );
    testcase( pc==iCellLast );
    /* These conditions have already been verified in btreeInitPage()
    ** if PRAGMA cell_size_check=ON.
    */
    if( pc<iCellFirst || pc>iCellLast ){
      return SQLITE_CORRUPT_PGNO(pPage->pgno);
    }
    assert( pc>=iCellFirst && pc<=iCellLast );
    size = pPage->xCellSize(pPage, &src[pc]);
    cbrk -= size;
    if( cbrk<iCellFirst || pc+size>usableSize ){
      return SQLITE_CORRUPT_PGNO(pPage->pgno);
    }
    assert( cbrk+size<=usableSize && cbrk>=iCellFirst );
    testcase( cbrk+size==usableSize );
    testcase( pc+size==usableSize );
    put2byte(pAddr, cbrk);
    if( temp==0 ){
      int x;
................................................................................
    }
    memcpy(&data[cbrk], &src[pc], size);
  }
  data[hdr+7] = 0;

 defragment_out:
  if( data[hdr+7]+cbrk-iCellFirst!=pPage->nFree ){
    return SQLITE_CORRUPT_PGNO(pPage->pgno);
  }
  assert( cbrk>=iCellFirst );
  put2byte(&data[hdr+5], cbrk);
  data[hdr+1] = 0;
  data[hdr+2] = 0;
  memset(&data[iCellFirst], 0, cbrk-iCellFirst);
  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
................................................................................
    ** freeblock form a big-endian integer which is the size of the freeblock
    ** in bytes, including the 4-byte header. */
    size = get2byte(&aData[pc+2]);
    if( (x = size - nByte)>=0 ){
      testcase( x==4 );
      testcase( x==3 );
      if( size+pc > usableSize ){
        *pRc = SQLITE_CORRUPT_PGNO(pPg->pgno);
        return 0;
      }else if( x<4 ){
        /* EVIDENCE-OF: R-11498-58022 In a well-formed b-tree page, the total
        ** number of bytes in fragments may not exceed 60. */
        if( aData[hdr+7]>57 ) return 0;

        /* Remove the slot from the free-list. Update the number of
................................................................................
      return &aData[pc + x];
    }
    iAddr = pc;
    pc = get2byte(&aData[pc]);
    if( pc<iAddr+size ) break;
  }
  if( pc ){
    *pRc = SQLITE_CORRUPT_PGNO(pPg->pgno);
  }

  return 0;
}

/*
** Allocate nByte bytes of space from within the B-Tree page passed
................................................................................
  ** integer, so a value of 0 is used in its place. */
  top = get2byte(&data[hdr+5]);
  assert( top<=(int)pPage->pBt->usableSize ); /* Prevent by getAndInitPage() */
  if( gap>top ){
    if( top==0 && pPage->pBt->usableSize==65536 ){
      top = 65536;
    }else{
      return SQLITE_CORRUPT_PGNO(pPage->pgno);
    }
  }

  /* If there is enough space between gap and top for one more cell pointer
  ** array entry offset, and if the freelist is not empty, then search the
  ** freelist looking for a free slot big enough to satisfy the request.
  */
................................................................................
  iPtr = hdr + 1;
  if( data[iPtr+1]==0 && data[iPtr]==0 ){
    iFreeBlk = 0;  /* Shortcut for the case when the freelist is empty */
  }else{
    while( (iFreeBlk = get2byte(&data[iPtr]))<iStart ){
      if( iFreeBlk<iPtr+4 ){
        if( iFreeBlk==0 ) break;
        return SQLITE_CORRUPT_PGNO(pPage->pgno);
      }
      iPtr = iFreeBlk;
    }
    if( iFreeBlk>pPage->pBt->usableSize-4 ){
      return SQLITE_CORRUPT_PGNO(pPage->pgno);
    }
    assert( iFreeBlk>iPtr || iFreeBlk==0 );
  
    /* At this point:
    **    iFreeBlk:   First freeblock after iStart, or zero if none
    **    iPtr:       The address of a pointer to iFreeBlk
    **
    ** Check to see if iFreeBlk should be coalesced onto the end of iStart.
    */
    if( iFreeBlk && iEnd+3>=iFreeBlk ){
      nFrag = iFreeBlk - iEnd;
      if( iEnd>iFreeBlk ) return SQLITE_CORRUPT_PGNO(pPage->pgno);
      iEnd = iFreeBlk + get2byte(&data[iFreeBlk+2]);
      if( iEnd > pPage->pBt->usableSize ){
        return SQLITE_CORRUPT_PGNO(pPage->pgno);
      }
      iSize = iEnd - iStart;
      iFreeBlk = get2byte(&data[iFreeBlk]);
    }
  
    /* If iPtr is another freeblock (that is, if iPtr is not the freelist
    ** pointer in the page header) then check to see if iStart should be
    ** coalesced onto the end of iPtr.
    */
    if( iPtr>hdr+1 ){
      int iPtrEnd = iPtr + get2byte(&data[iPtr+2]);
      if( iPtrEnd+3>=iStart ){
        if( iPtrEnd>iStart ) return SQLITE_CORRUPT_PGNO(pPage->pgno);
        nFrag += iStart - iPtrEnd;
        iSize = iEnd - iPtr;
        iStart = iPtr;
      }
    }
    if( nFrag>data[hdr+7] ) return SQLITE_CORRUPT_PGNO(pPage->pgno);
    data[hdr+7] -= nFrag;
  }
  x = get2byte(&data[hdr+5]);
  if( iStart<=x ){
    /* The new freeblock is at the beginning of the cell content area,
    ** so just extend the cell content area rather than create another
    ** freelist entry */
    if( iStart<x || iPtr!=hdr+1 ) return SQLITE_CORRUPT_PGNO(pPage->pgno);
    put2byte(&data[hdr+1], iFreeBlk);
    put2byte(&data[hdr+5], iEnd);
  }else{
    /* Insert the new freeblock into the freelist */
    put2byte(&data[iPtr], iStart);
  }
  if( pPage->pBt->btsFlags & BTS_FAST_SECURE ){
................................................................................
    pPage->intKeyLeaf = 0;
    pPage->xParseCell = btreeParseCellPtrIndex;
    pPage->maxLocal = pBt->maxLocal;
    pPage->minLocal = pBt->minLocal;
  }else{
    /* EVIDENCE-OF: R-47608-56469 Any other value for the b-tree page type is
    ** an error. */
    return SQLITE_CORRUPT_PGNO(pPage->pgno);
  }
  pPage->max1bytePayload = pBt->max1bytePayload;
  return SQLITE_OK;
}

/*
** Initialize the auxiliary information for a disk block.
................................................................................

  pBt = pPage->pBt;
  hdr = pPage->hdrOffset;
  data = pPage->aData;
  /* EVIDENCE-OF: R-28594-02890 The one-byte flag at offset 0 indicating
  ** the b-tree page type. */
  if( decodeFlags(pPage, data[hdr]) ){
    return SQLITE_CORRUPT_PGNO(pPage->pgno);
  }
  assert( pBt->pageSize>=512 && pBt->pageSize<=65536 );
  pPage->maskPage = (u16)(pBt->pageSize - 1);
  pPage->nOverflow = 0;
  usableSize = pBt->usableSize;
  pPage->cellOffset = cellOffset = hdr + 8 + pPage->childPtrSize;
  pPage->aDataEnd = &data[usableSize];
................................................................................
  ** interpreted as 65536. */
  top = get2byteNotZero(&data[hdr+5]);
  /* EVIDENCE-OF: R-37002-32774 The two-byte integer at offset 3 gives the
  ** number of cells on the page. */
  pPage->nCell = get2byte(&data[hdr+3]);
  if( pPage->nCell>MX_CELL(pBt) ){
    /* To many cells for a single page.  The page must be corrupt */
    return SQLITE_CORRUPT_PGNO(pPage->pgno);
  }
  testcase( pPage->nCell==MX_CELL(pBt) );
  /* EVIDENCE-OF: R-24089-57979 If a page contains no cells (which is only
  ** possible for a root page of a table that contains no rows) then the
  ** offset to the cell content area will equal the page size minus the
  ** bytes of reserved space. */
  assert( pPage->nCell>0 || top==usableSize || CORRUPT_DB );
................................................................................

    if( !pPage->leaf ) iCellLast--;
    for(i=0; i<pPage->nCell; i++){
      pc = get2byteAligned(&data[cellOffset+i*2]);
      testcase( pc==iCellFirst );
      testcase( pc==iCellLast );
      if( pc<iCellFirst || pc>iCellLast ){
        return SQLITE_CORRUPT_PGNO(pPage->pgno);
      }
      sz = pPage->xCellSize(pPage, &data[pc]);
      testcase( pc+sz==usableSize );
      if( pc+sz>usableSize ){
        return SQLITE_CORRUPT_PGNO(pPage->pgno);
      }
    }
    if( !pPage->leaf ) iCellLast++;
  }  

  /* Compute the total free space on the page
  ** EVIDENCE-OF: R-23588-34450 The two-byte integer at offset 1 gives the
................................................................................
  nFree = data[hdr+7] + top;  /* Init nFree to non-freeblock free space */
  if( pc>0 ){
    u32 next, size;
    if( pc<iCellFirst ){
      /* EVIDENCE-OF: R-55530-52930 In a well-formed b-tree page, there will
      ** always be at least one cell before the first freeblock.
      */
      return SQLITE_CORRUPT_PGNO(pPage->pgno); 
    }
    while( 1 ){
      if( pc>iCellLast ){
        /* Freeblock off the end of the page */
        return SQLITE_CORRUPT_PGNO(pPage->pgno);
      }
      next = get2byte(&data[pc]);
      size = get2byte(&data[pc+2]);
      nFree = nFree + size;
      if( next<=pc+size+3 ) break;
      pc = next;
    }
    if( next>0 ){
      /* Freeblock not in ascending order */
      return SQLITE_CORRUPT_PGNO(pPage->pgno);
    }
    if( pc+size>(unsigned int)usableSize ){
      /* Last freeblock extends past page end */
      return SQLITE_CORRUPT_PGNO(pPage->pgno);
    }
  }

  /* At this point, nFree contains the sum of the offset to the start
  ** of the cell-content area plus the number of free bytes within
  ** the cell-content area. If this is greater than the usable-size
  ** of the page, then the page must be corrupted. This check also
  ** serves to verify that the offset to the start of the cell-content
  ** area, according to the page header, lies within the page.
  */
  if( nFree>usableSize ){
    return SQLITE_CORRUPT_PGNO(pPage->pgno);
  }
  pPage->nFree = (u16)(nFree - iCellFirst);
  pPage->isInit = 1;
  return SQLITE_OK;
}

/*
................................................................................
*/
static int modifyPagePointer(MemPage *pPage, Pgno iFrom, Pgno iTo, u8 eType){
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  if( eType==PTRMAP_OVERFLOW2 ){
    /* The pointer is always the first 4 bytes of the page in this case.  */
    if( get4byte(pPage->aData)!=iFrom ){
      return SQLITE_CORRUPT_PGNO(pPage->pgno);
    }
    put4byte(pPage->aData, iTo);
  }else{
    int i;
    int nCell;
    int rc;

................................................................................
    for(i=0; i<nCell; i++){
      u8 *pCell = findCell(pPage, i);
      if( eType==PTRMAP_OVERFLOW1 ){
        CellInfo info;
        pPage->xParseCell(pPage, pCell, &info);
        if( info.nLocal<info.nPayload ){
          if( pCell+info.nSize > pPage->aData+pPage->pBt->usableSize ){
            return SQLITE_CORRUPT_PGNO(pPage->pgno);
          }
          if( iFrom==get4byte(pCell+info.nSize-4) ){
            put4byte(pCell+info.nSize-4, iTo);
            break;
          }
        }
      }else{
................................................................................
        }
      }
    }
  
    if( i==nCell ){
      if( eType!=PTRMAP_BTREE || 
          get4byte(&pPage->aData[pPage->hdrOffset+8])!=iFrom ){
        return SQLITE_CORRUPT_PGNO(pPage->pgno);
      }
      put4byte(&pPage->aData[pPage->hdrOffset+8], iTo);
    }
  }
  return SQLITE_OK;
}

................................................................................
  assert( cursorHoldsMutex(pCur) );
  assert( pCur->eState==CURSOR_VALID );
  assert( pCur->curIntKey );
  getCellInfo(pCur);
  return pCur->info.nKey;
}















/*
** Return the number of bytes of payload for the entry that pCur is
** currently pointing to.  For table btrees, this will be the amount
** of data.  For index btrees, this will be the size of the key.
**
** The caller must guarantee that the cursor is pointing to a non-NULL
** valid entry.  In other words, the calling procedure must guarantee
................................................................................
  assert( aPayload > pPage->aData );
  if( (uptr)(aPayload - pPage->aData) > (pBt->usableSize - pCur->info.nLocal) ){
    /* Trying to read or write past the end of the data is an error.  The
    ** conditional above is really:
    **    &aPayload[pCur->info.nLocal] > &pPage->aData[pBt->usableSize]
    ** but is recast into its current form to avoid integer overflow problems
    */
    return SQLITE_CORRUPT_PGNO(pPage->pgno);
  }

  /* Check if data must be read/written to/from the btree page itself. */
  if( offset<pCur->info.nLocal ){
    int a = amt;
    if( a+offset>pCur->info.nLocal ){
      a = pCur->info.nLocal - offset;
................................................................................
      if( rc ) break;
      iIdx++;
    }
  }

  if( rc==SQLITE_OK && amt>0 ){
    /* Overflow chain ends prematurely */
    return SQLITE_CORRUPT_PGNO(pPage->pgno);
  }
  return rc;
}

/*
** Read part of the payload for the row at which that cursor pCur is currently
** pointing.  "amt" bytes will be transferred into pBuf[].  The transfer
................................................................................
  ** Earlier versions of SQLite assumed that this test could not fail
  ** if the root page was already loaded when this function was called (i.e.
  ** if pCur->iPage>=0). But this is not so if the database is corrupted 
  ** in such a way that page pRoot is linked into a second b-tree table 
  ** (or the freelist).  */
  assert( pRoot->intKey==1 || pRoot->intKey==0 );
  if( pRoot->isInit==0 || (pCur->pKeyInfo==0)!=pRoot->intKey ){
    return SQLITE_CORRUPT_PGNO(pCur->pPage->pgno);
  }

skip_init:  
  pCur->ix = 0;
  pCur->info.nSize = 0;
  pCur->curFlags &= ~(BTCF_AtLast|BTCF_ValidNKey|BTCF_ValidOvfl);

................................................................................
    if( xRecordCompare==0 ){
      for(;;){
        i64 nCellKey;
        pCell = findCellPastPtr(pPage, idx);
        if( pPage->intKeyLeaf ){
          while( 0x80 <= *(pCell++) ){
            if( pCell>=pPage->aDataEnd ){
              return SQLITE_CORRUPT_PGNO(pPage->pgno);
            }
          }
        }
        getVarint(pCell, (u64*)&nCellKey);
        if( nCellKey<intKey ){
          lwr = idx+1;
          if( lwr>upr ){ c = -1; break; }
................................................................................
          pPage->xParseCell(pPage, pCellBody, &pCur->info);
          nCell = (int)pCur->info.nKey;
          testcase( nCell<0 );   /* True if key size is 2^32 or more */
          testcase( nCell==0 );  /* Invalid key size:  0x80 0x80 0x00 */
          testcase( nCell==1 );  /* Invalid key size:  0x80 0x80 0x01 */
          testcase( nCell==2 );  /* Minimum legal index key size */
          if( nCell<2 ){
            rc = SQLITE_CORRUPT_PGNO(pPage->pgno);
            goto moveto_finish;
          }
          pCellKey = sqlite3Malloc( nCell+18 );
          if( pCellKey==0 ){
            rc = SQLITE_NOMEM_BKPT;
            goto moveto_finish;
          }
................................................................................
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  pPage->xParseCell(pPage, pCell, pInfo);
  if( pInfo->nLocal==pInfo->nPayload ){
    return SQLITE_OK;  /* No overflow pages. Return without doing anything */
  }
  if( pCell+pInfo->nSize-1 > pPage->aData+pPage->maskPage ){
    /* Cell extends past end of page */
    return SQLITE_CORRUPT_PGNO(pPage->pgno);
  }
  ovflPgno = get4byte(pCell + pInfo->nSize - 4);
  pBt = pPage->pBt;
  assert( pBt->usableSize > 4 );
  ovflPageSize = pBt->usableSize - 4;
  nOvfl = (pInfo->nPayload - pInfo->nLocal + ovflPageSize - 1)/ovflPageSize;
  assert( nOvfl>0 || 
................................................................................
** This routine calls the finalize method for that function.  The
** result of the aggregate is stored back into pMem.
**
** Return SQLITE_ERROR if the finalizer reports an error.  SQLITE_OK
** otherwise.
*/
SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem *pMem, FuncDef *pFunc){
  int rc = SQLITE_OK;
  if( ALWAYS(pFunc && pFunc->xFinalize) ){
    sqlite3_context ctx;
    Mem t;


    assert( (pMem->flags & MEM_Null)!=0 || pFunc==pMem->u.pDef );
    assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) );
    memset(&ctx, 0, sizeof(ctx));
    memset(&t, 0, sizeof(t));
    t.flags = MEM_Null;
    t.db = pMem->db;
    ctx.pOut = &t;
    ctx.pMem = pMem;
    ctx.pFunc = pFunc;
    pFunc->xFinalize(&ctx); /* IMP: R-24505-23230 */
    assert( (pMem->flags & MEM_Dyn)==0 );
    if( pMem->szMalloc>0 ) sqlite3DbFreeNN(pMem->db, pMem->zMalloc);
    memcpy(pMem, &t, sizeof(t));
    rc = ctx.isError;
  }
  return rc;
}

/*
** If the memory cell contains a value that must be freed by
** invoking the external callback in Mem.xDel, then this routine
** will free that value.  It also sets Mem.flags to MEM_Null.
**
................................................................................
  sqlite3_value *pVal = 0;
  int negInt = 1;
  const char *zNeg = "";
  int rc = SQLITE_OK;

  assert( pExpr!=0 );
  while( (op = pExpr->op)==TK_UPLUS || op==TK_SPAN ) pExpr = pExpr->pLeft;



  if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;


  /* Compressed expressions only appear when parsing the DEFAULT clause
  ** on a table column definition, and hence only when pCtx==0.  This
  ** check ensures that an EP_TokenOnly expression is never passed down
  ** into valueFromFunction(). */
  assert( (pExpr->flags & EP_TokenOnly)==0 || pCtx==0 );

................................................................................
  }
#endif

  *ppVal = pVal;
  return rc;

no_mem:



  sqlite3OomFault(db);
  sqlite3DbFree(db, zVal);
  assert( *ppVal==0 );
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pCtx==0 ) sqlite3ValueFree(pVal);
#else
  assert( pCtx==0 ); sqlite3ValueFree(pVal);
#endif
................................................................................
  int nSub = 0;                        /* Number of sub-vdbes seen so far */
  SubProgram **apSub = 0;              /* Array of sub-vdbes */
  Mem *pSub = 0;                       /* Memory cell hold array of subprogs */
  sqlite3 *db = p->db;                 /* The database connection */
  int i;                               /* Loop counter */
  int rc = SQLITE_OK;                  /* Return code */
  Mem *pMem = &p->aMem[1];             /* First Mem of result set */



  assert( p->explain );
  assert( p->magic==VDBE_MAGIC_RUN );
  assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY || p->rc==SQLITE_NOMEM );

  /* Even though this opcode does not use dynamic strings for
  ** the result, result columns may become dynamic if the user calls
  ** sqlite3_column_text16(), causing a translation to UTF-16 encoding.
  */
  releaseMemArray(pMem, 8);
  p->pResultSet = 0;

  if( p->rc==SQLITE_NOMEM_BKPT ){
    /* This happens if a malloc() inside a call to sqlite3_column_text() or
    ** sqlite3_column_text16() failed.  */
    sqlite3OomFault(db);
    return SQLITE_ERROR;
  }

  /* When the number of output rows reaches nRow, that means the
................................................................................
  ** listing has finished and sqlite3_step() should return SQLITE_DONE.
  ** nRow is the sum of the number of rows in the main program, plus
  ** the sum of the number of rows in all trigger subprograms encountered
  ** so far.  The nRow value will increase as new trigger subprograms are
  ** encountered, but p->pc will eventually catch up to nRow.
  */
  nRow = p->nOp;
  if( p->explain==1 ){
    /* The first 8 memory cells are used for the result set.  So we will
    ** commandeer the 9th cell to use as storage for an array of pointers
    ** to trigger subprograms.  The VDBE is guaranteed to have at least 9
    ** cells.  */
    assert( p->nMem>9 );
    pSub = &p->aMem[9];
    if( pSub->flags&MEM_Blob ){
................................................................................
    for(i=0; i<nSub; i++){
      nRow += apSub[i]->nOp;
    }
  }

  do{
    i = p->pc++;
  }while( i<nRow && p->explain==2 && p->aOp[i].opcode!=OP_Explain );
  if( i>=nRow ){
    p->rc = SQLITE_OK;
    rc = SQLITE_DONE;
  }else if( db->u1.isInterrupted ){
    p->rc = SQLITE_INTERRUPT;
    rc = SQLITE_ERROR;
    sqlite3VdbeError(p, sqlite3ErrStr(p->rc));
  }else{
    char *zP4;
    Op *pOp;


    if( i<p->nOp ){
      /* The output line number is small enough that we are still in the
      ** main program. */
      pOp = &p->aOp[i];
    }else{
      /* We are currently listing subprograms.  Figure out which one and
      ** pick up the appropriate opcode. */
................................................................................
      int j;
      i -= p->nOp;
      for(j=0; i>=apSub[j]->nOp; j++){
        i -= apSub[j]->nOp;
      }
      pOp = &apSub[j]->aOp[i];
    }
    if( p->explain==1 ){
      pMem->flags = MEM_Int;
      pMem->u.i = i;                                /* Program counter */
      pMem++;
  
      pMem->flags = MEM_Static|MEM_Str|MEM_Term;
      pMem->z = (char*)sqlite3OpcodeName(pOp->opcode); /* Opcode */
      assert( pMem->z!=0 );
      pMem->n = sqlite3Strlen30(pMem->z);
      pMem->enc = SQLITE_UTF8;
      pMem++;

      /* When an OP_Program opcode is encounter (the only opcode that has
      ** a P4_SUBPROGRAM argument), expand the size of the array of subprograms
      ** kept in p->aMem[9].z to hold the new program - assuming this subprogram
      ** has not already been seen.
      */
      if( pOp->p4type==P4_SUBPROGRAM ){
        int nByte = (nSub+1)*sizeof(SubProgram*);
        int j;
        for(j=0; j<nSub; j++){
          if( apSub[j]==pOp->p4.pProgram ) break;
        }

        if( j==nSub && SQLITE_OK==sqlite3VdbeMemGrow(pSub, nByte, nSub!=0) ){




          apSub = (SubProgram **)pSub->z;
          apSub[nSub++] = pOp->p4.pProgram;
          pSub->flags |= MEM_Blob;
          pSub->n = nSub*sizeof(SubProgram*);

        }
      }

    }




















    pMem->flags = MEM_Int;
    pMem->u.i = pOp->p1;                          /* P1 */
    pMem++;

    pMem->flags = MEM_Int;
    pMem->u.i = pOp->p2;                          /* P2 */
    pMem++;

    pMem->flags = MEM_Int;
    pMem->u.i = pOp->p3;                          /* P3 */
    pMem++;

    if( sqlite3VdbeMemClearAndResize(pMem, 100) ){ /* P4 */
      assert( p->db->mallocFailed );
      return SQLITE_ERROR;
    }
    pMem->flags = MEM_Str|MEM_Term;
    zP4 = displayP4(pOp, pMem->z, pMem->szMalloc);
    if( zP4!=pMem->z ){
      pMem->n = 0;
      sqlite3VdbeMemSetStr(pMem, zP4, -1, SQLITE_UTF8, 0);
    }else{
      assert( pMem->z!=0 );
      pMem->n = sqlite3Strlen30(pMem->z);
      pMem->enc = SQLITE_UTF8;
    }
    pMem++;

    if( p->explain==1 ){
      if( sqlite3VdbeMemClearAndResize(pMem, 4) ){
        assert( p->db->mallocFailed );
        return SQLITE_ERROR;
      }
      pMem->flags = MEM_Str|MEM_Term;
      pMem->n = 2;
      sqlite3_snprintf(3, pMem->z, "%.2x", pOp->p5);   /* P5 */
      pMem->enc = SQLITE_UTF8;
      pMem++;
  
#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
      if( sqlite3VdbeMemClearAndResize(pMem, 500) ){
        assert( p->db->mallocFailed );
        return SQLITE_ERROR;
      }
      pMem->flags = MEM_Str|MEM_Term;
      pMem->n = displayComment(pOp, zP4, pMem->z, 500);
      pMem->enc = SQLITE_UTF8;
#else
      pMem->flags = MEM_Null;                       /* Comment */
#endif
    }

    p->nResColumn = 8 - 4*(p->explain-1);
    p->pResultSet = &p->aMem[1];
    p->rc = SQLITE_OK;
    rc = SQLITE_ROW;

  }
  return rc;
}
#endif /* SQLITE_OMIT_EXPLAIN */

#ifdef SQLITE_DEBUG
/*
................................................................................
      };
      Pager *pPager;   /* Pager associated with pBt */
      needXcommit = 1;
      sqlite3BtreeEnter(pBt);
      pPager = sqlite3BtreePager(pBt);
      if( db->aDb[i].safety_level!=PAGER_SYNCHRONOUS_OFF
       && aMJNeeded[sqlite3PagerGetJournalMode(pPager)]

      ){ 
        assert( i!=1 );
        nTrans++;
      }
      rc = sqlite3PagerExclusiveLock(pPager);
      sqlite3BtreeLeave(pBt);
    }
................................................................................

/*
** Delete an entire VDBE.
*/
SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe *p){
  sqlite3 *db;

  if( NEVER(p==0) ) return;
  db = p->db;
  assert( sqlite3_mutex_held(db->mutex) );
  sqlite3VdbeClearObject(db, p);
  if( p->pPrev ){
    p->pPrev->pNext = p->pNext;
  }else{
    assert( db->pVdbe==p );
................................................................................
** sqlite3_create_function16() routines that originally registered the
** application defined function.
*/
SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context *p){
  assert( p && p->pOut );
  return p->pOut->db;
}




















/*
** Return the current time for a statement.  If the current time
** is requested more than once within the same run of a single prepared
** statement, the exact same time is returned for each invocation regardless
** of the amount of time that elapses between invocations.  In other words,
** the time returned is always the time of the first call.
................................................................................
  if( p->apCsr[pOp->p1]->nullRow ){
    sqlite3VdbeMemSetNull(aMem + pOp->p3);
    goto jump_to_p2;
  }
  break;
}































/* Opcode: Column P1 P2 P3 P4 P5
** Synopsis: r[P3]=PX
**
** Interpret the data that cursor P1 points to as a structure built using
** the MakeRecord instruction.  (See the MakeRecord opcode for additional
** information about the format of the data.)  Extract the P2-th column
** from this record.  If there are less that (P2+1) 
................................................................................
  VdbeBranchTaken(res!=0,2);
  if( res ) goto jump_to_p2;
  break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifndef SQLITE_OMIT_VIRTUALTABLE
/* Opcode: VColumn P1 P2 P3 * *
** Synopsis: r[P3]=vcolumn(P2)
**
** Store the value of the P2-th column of
** the row of the virtual-table that the 
** P1 cursor is pointing to into register P3.






*/
case OP_VColumn: {
  sqlite3_vtab *pVtab;
  const sqlite3_module *pModule;
  Mem *pDest;
  sqlite3_context sContext;

................................................................................
    break;
  }
  pVtab = pCur->uc.pVCur->pVtab;
  pModule = pVtab->pModule;
  assert( pModule->xColumn );
  memset(&sContext, 0, sizeof(sContext));
  sContext.pOut = pDest;

  MemSetTypeFlag(pDest, MEM_Null);
  rc = pModule->xColumn(pCur->uc.pVCur, &sContext, pOp->p2);
  sqlite3VtabImportErrmsg(p, pVtab);
  if( sContext.isError ){
    rc = sContext.isError;
  }
  sqlite3VdbeChangeEncoding(pDest, encoding);
................................................................................
  }

  REGISTER_TRACE(pOp->p3, pOut);
  UPDATE_MAX_BLOBSIZE(pOut);
  break;
}









/* Opcode: Init P1 P2 P3 P4 *
** Synopsis: Start at P2
**
** Programs contain a single instance of this opcode as the very first
** opcode.
**
** If tracing is enabled (by the sqlite3_trace()) interface, then
................................................................................
**
** Increment the value of P1 so that OP_Once opcodes will jump the
** first time they are evaluated for this run.
**
** If P3 is not zero, then it is an address to jump to if an SQLITE_CORRUPT
** error is encountered.
*/

case OP_Init: {          /* jump */
  char *zTrace;
  int i;

  /* If the P4 argument is not NULL, then it must be an SQL comment string.
  ** The "--" string is broken up to prevent false-positives with srcck1.c.
  **
................................................................................
  ** This assert() provides evidence for:
  ** EVIDENCE-OF: R-50676-09860 The callback can compute the same text that
  ** would have been returned by the legacy sqlite3_trace() interface by
  ** using the X argument when X begins with "--" and invoking
  ** sqlite3_expanded_sql(P) otherwise.
  */
  assert( pOp->p4.z==0 || strncmp(pOp->p4.z, "-" "- ", 3)==0 );

  assert( pOp==p->aOp );  /* Always instruction 0 */


#ifndef SQLITE_OMIT_TRACE
  if( (db->mTrace & (SQLITE_TRACE_STMT|SQLITE_TRACE_LEGACY))!=0
   && !p->doingRerun
   && (zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql))!=0
  ){
#ifndef SQLITE_OMIT_DEPRECATED
................................................................................
  ){
    sqlite3DebugPrintf("SQL-trace: %s\n", zTrace);
  }
#endif /* SQLITE_DEBUG */
#endif /* SQLITE_OMIT_TRACE */
  assert( pOp->p2>0 );
  if( pOp->p1>=sqlite3GlobalConfig.iOnceResetThreshold ){

    for(i=1; i<p->nOp; i++){
      if( p->aOp[i].opcode==OP_Once ) p->aOp[i].p1 = 0;
    }
    pOp->p1 = 0;
  }
  pOp->p1++;
  p->aCounter[SQLITE_STMTSTATUS_RUN]++;
................................................................................
SQLITE_PRIVATE int sqlite3WalkSelectExpr(Walker *pWalker, Select *p){
  if( sqlite3WalkExprList(pWalker, p->pEList) ) return WRC_Abort;
  if( sqlite3WalkExpr(pWalker, p->pWhere) ) return WRC_Abort;
  if( sqlite3WalkExprList(pWalker, p->pGroupBy) ) return WRC_Abort;
  if( sqlite3WalkExpr(pWalker, p->pHaving) ) return WRC_Abort;
  if( sqlite3WalkExprList(pWalker, p->pOrderBy) ) return WRC_Abort;
  if( sqlite3WalkExpr(pWalker, p->pLimit) ) return WRC_Abort;
  if( sqlite3WalkExpr(pWalker, p->pOffset) ) return WRC_Abort;
  return WRC_Continue;
}

/*
** Walk the parse trees associated with all subqueries in the
** FROM clause of SELECT statement p.  Do not invoke the select
** callback on p, but do invoke it on each FROM clause subquery
................................................................................
*/
SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker *pWalker, Select *p){
  SrcList *pSrc;
  int i;
  struct SrcList_item *pItem;

  pSrc = p->pSrc;
  if( ALWAYS(pSrc) ){
    for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){
      if( pItem->pSelect && sqlite3WalkSelect(pWalker, pItem->pSelect) ){
        return WRC_Abort;
      }
      if( pItem->fg.isTabFunc
       && sqlite3WalkExprList(pWalker, pItem->u1.pFuncArg)
      ){
        return WRC_Abort;
      }
    }
  }
  return WRC_Continue;
} 

/*
** Call sqlite3WalkExpr() for every expression in Select statement p.
................................................................................
    ** column in the FROM clause.  This is used by the LIMIT and ORDER BY
    ** clause processing on UPDATE and DELETE statements.
    */
    case TK_ROW: {
      SrcList *pSrcList = pNC->pSrcList;
      struct SrcList_item *pItem;
      assert( pSrcList && pSrcList->nSrc==1 );
      pItem = pSrcList->a; 

      pExpr->op = TK_COLUMN;
      pExpr->pTab = pItem->pTab;
      pExpr->iTable = pItem->iCursor;
      pExpr->iColumn = -1;
      pExpr->affinity = SQLITE_AFF_INTEGER;
      break;
    }
................................................................................
    p->selFlags |= SF_Resolved;

    /* Resolve the expressions in the LIMIT and OFFSET clauses. These
    ** are not allowed to refer to any names, so pass an empty NameContext.
    */
    memset(&sNC, 0, sizeof(sNC));
    sNC.pParse = pParse;
    if( sqlite3ResolveExprNames(&sNC, p->pLimit) ||
        sqlite3ResolveExprNames(&sNC, p->pOffset) ){
      return WRC_Abort;
    }

    /* If the SF_Converted flags is set, then this Select object was
    ** was created by the convertCompoundSelectToSubquery() function.
    ** In this case the ORDER BY clause (p->pOrderBy) should be resolved
    ** as if it were part of the sub-query, not the parent. This block
................................................................................
  }
}
static void heightOfSelect(Select *p, int *pnHeight){
  if( p ){
    heightOfExpr(p->pWhere, pnHeight);
    heightOfExpr(p->pHaving, pnHeight);
    heightOfExpr(p->pLimit, pnHeight);
    heightOfExpr(p->pOffset, pnHeight);
    heightOfExprList(p->pEList, pnHeight);
    heightOfExprList(p->pGroupBy, pnHeight);
    heightOfExprList(p->pOrderBy, pnHeight);
    heightOfSelect(p->pPrior, pnHeight);
  }
}

................................................................................
  assert( pToken );
  pNew = sqlite3ExprAlloc(db, TK_FUNCTION, pToken, 1);
  if( pNew==0 ){
    sqlite3ExprListDelete(db, pList); /* Avoid memory leak when malloc fails */
    return 0;
  }
  pNew->x.pList = pList;

  assert( !ExprHasProperty(pNew, EP_xIsSelect) );
  sqlite3ExprSetHeightAndFlags(pParse, pNew);
  return pNew;
}

/*
** Assign a variable number to an expression that encodes a wildcard
................................................................................
    pNew->pGroupBy = sqlite3ExprListDup(db, p->pGroupBy, flags);
    pNew->pHaving = sqlite3ExprDup(db, p->pHaving, flags);
    pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, flags);
    pNew->op = p->op;
    pNew->pNext = pNext;
    pNew->pPrior = 0;
    pNew->pLimit = sqlite3ExprDup(db, p->pLimit, flags);
    pNew->pOffset = sqlite3ExprDup(db, p->pOffset, flags);
    pNew->iLimit = 0;
    pNew->iOffset = 0;
    pNew->selFlags = p->selFlags & ~SF_UsesEphemeral;
    pNew->addrOpenEphm[0] = -1;
    pNew->addrOpenEphm[1] = -1;
    pNew->nSelectRow = p->nSelectRow;
    pNew->pWith = withDup(db, p->pWith);
................................................................................
** pList might be NULL following an OOM error.  But pSpan should never be
** NULL.  If a memory allocation fails, the pParse->db->mallocFailed flag
** is set.
*/
SQLITE_PRIVATE void sqlite3ExprListSetSpan(
  Parse *pParse,          /* Parsing context */
  ExprList *pList,        /* List to which to add the span. */
  ExprSpan *pSpan         /* The span to be added */

){
  sqlite3 *db = pParse->db;
  assert( pList!=0 || db->mallocFailed!=0 );
  if( pList ){
    struct ExprList_item *pItem = &pList->a[pList->nExpr-1];
    assert( pList->nExpr>0 );
    assert( db->mallocFailed || pItem->pExpr==pSpan->pExpr );
    sqlite3DbFree(db, pItem->zSpan);
    pItem->zSpan = sqlite3DbStrNDup(db, (char*)pSpan->zStart,
                                    (int)(pSpan->zEnd - pSpan->zStart));
  }
}

/*
** If the expression list pEList contains more than iLimit elements,
** leave an error message in pParse.
*/
................................................................................
  if( p->selFlags & (SF_Distinct|SF_Aggregate) ){
    testcase( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct );
    testcase( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Aggregate );
    return 0; /* No DISTINCT keyword and no aggregate functions */
  }
  assert( p->pGroupBy==0 );              /* Has no GROUP BY clause */
  if( p->pLimit ) return 0;              /* Has no LIMIT clause */
  assert( p->pOffset==0 );               /* No LIMIT means no OFFSET */
  if( p->pWhere ) return 0;              /* Has no WHERE clause */
  pSrc = p->pSrc;
  assert( pSrc!=0 );
  if( pSrc->nSrc!=1 ) return 0;          /* Single term in FROM clause */
  if( pSrc->a[0].pSelect ) return 0;     /* FROM is not a subquery or view */
  pTab = pSrc->a[0].pTab;
  assert( pTab!=0 );
................................................................................
**     SELECT <column1>, <column2>... FROM <table>
**
** If the RHS of the IN operator is a list or a more complex subquery, then
** an ephemeral table might need to be generated from the RHS and then
** pX->iTable made to point to the ephemeral table instead of an
** existing table.
**
** The inFlags parameter must contain exactly one of the bits
** IN_INDEX_MEMBERSHIP or IN_INDEX_LOOP.  If inFlags contains
** IN_INDEX_MEMBERSHIP, then the generated table will be used for a
** fast membership test.  When the IN_INDEX_LOOP bit is set, the
** IN index will be used to loop over all values of the RHS of the
** IN operator.
**
** When IN_INDEX_LOOP is used (and the b-tree will be used to iterate
** through the set members) then the b-tree must not contain duplicates.
** An epheremal table must be used unless the selected columns are guaranteed
** to be unique - either because it is an INTEGER PRIMARY KEY or due to
** a UNIQUE constraint or index.
**
** When IN_INDEX_MEMBERSHIP is used (and the b-tree will be used 
** for fast set membership tests) then an epheremal table must 
** be used unless <columns> is a single INTEGER PRIMARY KEY column or an 
** index can be found with the specified <columns> as its left-most.
................................................................................
      **
      ** In both cases, the query is augmented with "LIMIT 1".  Any 
      ** preexisting limit is discarded in place of the new LIMIT 1.
      */
      Select *pSel;                         /* SELECT statement to encode */
      SelectDest dest;                      /* How to deal with SELECT result */
      int nReg;                             /* Registers to allocate */


      testcase( pExpr->op==TK_EXISTS );
      testcase( pExpr->op==TK_SELECT );
      assert( pExpr->op==TK_EXISTS || pExpr->op==TK_SELECT );
      assert( ExprHasProperty(pExpr, EP_xIsSelect) );

      pSel = pExpr->x.pSelect;
................................................................................
        sqlite3VdbeAddOp3(v, OP_Null, 0, dest.iSDParm, dest.iSDParm+nReg-1);
        VdbeComment((v, "Init subquery result"));
      }else{
        dest.eDest = SRT_Exists;
        sqlite3VdbeAddOp2(v, OP_Integer, 0, dest.iSDParm);
        VdbeComment((v, "Init EXISTS result"));
      }


      sqlite3ExprDelete(pParse->db, pSel->pLimit);


      pSel->pLimit = sqlite3ExprAlloc(pParse->db, TK_INTEGER,
                                  &sqlite3IntTokens[1], 0);

      pSel->iLimit = 0;
      pSel->selFlags &= ~SF_MultiValue;
      if( sqlite3Select(pParse, pSel, &dest) ){
        return 0;
      }
      rReg = dest.iSDParm;
      ExprSetVVAProperty(pExpr, EP_NoReduce);
................................................................................
        pDef = sqlite3VtabOverloadFunction(db, pDef, nFarg, pFarg->a[0].pExpr);
      }
#endif
      if( pDef->funcFlags & SQLITE_FUNC_NEEDCOLL ){
        if( !pColl ) pColl = db->pDfltColl; 
        sqlite3VdbeAddOp4(v, OP_CollSeq, 0, 0, 0, (char *)pColl, P4_COLLSEQ);
      }











      sqlite3VdbeAddOp4(v, pParse->iSelfTab ? OP_PureFunc0 : OP_Function0,
                        constMask, r1, target, (char*)pDef, P4_FUNCDEF);
      sqlite3VdbeChangeP5(v, (u8)nFarg);

      if( nFarg && constMask==0 ){
        sqlite3ReleaseTempRange(pParse, r1, nFarg);
      }
      return target;
    }
#ifndef SQLITE_OMIT_SUBQUERY
    case TK_EXISTS:
................................................................................
    }
    if( sqlite3FixExprList(pFix, pSelect->pOrderBy) ){
      return 1;
    }
    if( sqlite3FixExpr(pFix, pSelect->pLimit) ){
      return 1;
    }
    if( sqlite3FixExpr(pFix, pSelect->pOffset) ){
      return 1;
    }
    pSelect = pSelect->pPrior;
  }
  return 0;
}
SQLITE_PRIVATE int sqlite3FixExpr(
  DbFixer *pFix,     /* Context of the fixation */
  Expr *pExpr        /* The expression to be fixed to one database */
................................................................................
**
** Default value expressions must be constant.  Raise an exception if this
** is not the case.
**
** This routine is called by the parser while in the middle of
** parsing a CREATE TABLE statement.
*/
SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse *pParse, ExprSpan *pSpan){





  Table *p;
  Column *pCol;
  sqlite3 *db = pParse->db;
  p = pParse->pNewTable;
  if( p!=0 ){
    pCol = &(p->aCol[p->nCol-1]);
    if( !sqlite3ExprIsConstantOrFunction(pSpan->pExpr, db->init.busy) ){
      sqlite3ErrorMsg(pParse, "default value of column [%s] is not constant",
          pCol->zName);
    }else{
      /* A copy of pExpr is used instead of the original, as pExpr contains
      ** tokens that point to volatile memory. The 'span' of the expression
      ** is required by pragma table_info.
      */
      Expr x;
      sqlite3ExprDelete(db, pCol->pDflt);
      memset(&x, 0, sizeof(x));
      x.op = TK_SPAN;
      x.u.zToken = sqlite3DbStrNDup(db, (char*)pSpan->zStart,
                                    (int)(pSpan->zEnd - pSpan->zStart));
      x.pLeft = pSpan->pExpr;
      x.flags = EP_Skip;
      pCol->pDflt = sqlite3ExprDup(db, &x, EXPRDUP_REDUCE);
      sqlite3DbFree(db, x.u.zToken);
    }
  }
  sqlite3ExprDelete(db, pSpan->pExpr);
}

/*
** Backwards Compatibility Hack:
** 
** Historical versions of SQLite accepted strings as column names in
** indexes and PRIMARY KEY constraints and in UNIQUE constraints.  Example:
................................................................................
      assert(pParse->nTab==1);
      sqlite3MayAbort(pParse);
      sqlite3VdbeAddOp3(v, OP_OpenWrite, 1, pParse->regRoot, iDb);
      sqlite3VdbeChangeP5(v, OPFLAG_P2ISREG);
      pParse->nTab = 2;
      addrTop = sqlite3VdbeCurrentAddr(v) + 1;
      sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, addrTop);
      sqlite3SelectDestInit(&dest, SRT_Coroutine, regYield);
      sqlite3Select(pParse, pSelect, &dest);
      sqlite3VdbeEndCoroutine(v, regYield);
      sqlite3VdbeJumpHere(v, addrTop - 1);
      if( pParse->nErr ) return;
      pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect);
      if( pSelTab==0 ) return;
      assert( p->aCol==0 );
      p->nCol = pSelTab->nCol;
      p->aCol = pSelTab->aCol;
      pSelTab->nCol = 0;
      pSelTab->aCol = 0;
      sqlite3DeleteTable(db, pSelTab);





      addrInsLoop = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm);
      VdbeCoverage(v);
      sqlite3VdbeAddOp3(v, OP_MakeRecord, dest.iSdst, dest.nSdst, regRec);
      sqlite3TableAffinity(v, p, 0);
      sqlite3VdbeAddOp2(v, OP_NewRowid, 1, regRowid);
      sqlite3VdbeAddOp3(v, OP_Insert, 1, regRec, regRowid);
      sqlite3VdbeGoto(v, addrInsLoop);
................................................................................
  p->pCheck = sqlite3ExprListDup(db, pCNames, EXPRDUP_REDUCE);
  if( db->mallocFailed ) goto create_view_fail;

  /* Locate the end of the CREATE VIEW statement.  Make sEnd point to
  ** the end.
  */
  sEnd = pParse->sLastToken;
  assert( sEnd.z[0]!=0 );
  if( sEnd.z[0]!=';' ){
    sEnd.z += sEnd.n;
  }
  sEnd.n = 0;
  n = (int)(sEnd.z - pBegin->z);
  assert( n>0 );
  z = pBegin->z;
................................................................................
  if( !p && (pOn || pUsing) ){
    sqlite3ErrorMsg(pParse, "a JOIN clause is required before %s", 
      (pOn ? "ON" : "USING")
    );
    goto append_from_error;
  }
  p = sqlite3SrcListAppend(db, p, pTable, pDatabase);
  if( p==0 || NEVER(p->nSrc==0) ){
    goto append_from_error;
  }

  pItem = &p->a[p->nSrc-1];
  assert( pAlias!=0 );
  if( pAlias->n ){
    pItem->zAlias = sqlite3NameFromToken(db, pAlias);
  }
  pItem->pSelect = pSubquery;
  pItem->pOn = pOn;
................................................................................
    for(i=0; i<nCol; i++){
      const char *zColl = pIdx->azColl[i];
      pKey->aColl[i] = zColl==sqlite3StrBINARY ? 0 :
                        sqlite3LocateCollSeq(pParse, zColl);
      pKey->aSortOrder[i] = pIdx->aSortOrder[i];
    }
    if( pParse->nErr ){












      sqlite3KeyInfoUnref(pKey);
      pKey = 0;
    }
  }
  return pKey;
}

................................................................................
  }
  if( p && !p->xCmp && synthCollSeq(db, p) ){
    p = 0;
  }
  assert( !p || p->xCmp );
  if( p==0 ){
    sqlite3ErrorMsg(pParse, "no such collation sequence: %s", zName);

  }
  return p;
}

/*
** This routine is called on a collation sequence before it is used to
** check that it is defined. An undefined collation sequence exists when
................................................................................
** pWhere argument is an optional WHERE clause that restricts the
** set of rows in the view that are to be added to the ephemeral table.
*/
SQLITE_PRIVATE void sqlite3MaterializeView(
  Parse *pParse,       /* Parsing context */
  Table *pView,        /* View definition */
  Expr *pWhere,        /* Optional WHERE clause to be added */


  int iCur             /* Cursor number for ephemeral table */
){
  SelectDest dest;
  Select *pSel;
  SrcList *pFrom;
  sqlite3 *db = pParse->db;
  int iDb = sqlite3SchemaToIndex(db, pView->pSchema);
................................................................................
  if( pFrom ){
    assert( pFrom->nSrc==1 );
    pFrom->a[0].zName = sqlite3DbStrDup(db, pView->zName);
    pFrom->a[0].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zDbSName);
    assert( pFrom->a[0].pOn==0 );
    assert( pFrom->a[0].pUsing==0 );
  }
  pSel = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, 0, 
                          SF_IncludeHidden, 0, 0);
  sqlite3SelectDestInit(&dest, SRT_EphemTab, iCur);
  sqlite3Select(pParse, pSel, &dest);
  sqlite3SelectDelete(db, pSel);
}
#endif /* !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) */

#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY)
................................................................................
*/
SQLITE_PRIVATE Expr *sqlite3LimitWhere(
  Parse *pParse,               /* The parser context */
  SrcList *pSrc,               /* the FROM clause -- which tables to scan */
  Expr *pWhere,                /* The WHERE clause.  May be null */
  ExprList *pOrderBy,          /* The ORDER BY clause.  May be null */
  Expr *pLimit,                /* The LIMIT clause.  May be null */
  Expr *pOffset,               /* The OFFSET clause.  May be null */
  char *zStmtType              /* Either DELETE or UPDATE.  For err msgs. */
){

  Expr *pWhereRowid = NULL;    /* WHERE rowid .. */
  Expr *pInClause = NULL;      /* WHERE rowid IN ( select ) */
  Expr *pSelectRowid = NULL;   /* SELECT rowid ... */
  ExprList *pEList = NULL;     /* Expression list contaning only pSelectRowid */
  SrcList *pSelectSrc = NULL;  /* SELECT rowid FROM x ... (dup of pSrc) */
  Select *pSelect = NULL;      /* Complete SELECT tree */


  /* Check that there isn't an ORDER BY without a LIMIT clause.
  */
  if( pOrderBy && (pLimit == 0) ) {
    sqlite3ErrorMsg(pParse, "ORDER BY without LIMIT on %s", zStmtType);
    goto limit_where_cleanup;


  }

  /* We only need to generate a select expression if there
  ** is a limit/offset term to enforce.
  */
  if( pLimit == 0 ) {
    /* if pLimit is null, pOffset will always be null as well. */
    assert( pOffset == 0 );
    return pWhere;
  }

  /* Generate a select expression tree to enforce the limit/offset 
  ** term for the DELETE or UPDATE statement.  For example:
  **   DELETE FROM table_a WHERE col1=1 ORDER BY col2 LIMIT 1 OFFSET 1
  ** becomes:
  **   DELETE FROM table_a WHERE rowid IN ( 
  **     SELECT rowid FROM table_a WHERE col1=1 ORDER BY col2 LIMIT 1 OFFSET 1
  **   );
  */



  pSelectRowid = sqlite3PExpr(pParse, TK_ROW, 0, 0);
  if( pSelectRowid == 0 ) goto limit_where_cleanup;













  pEList = sqlite3ExprListAppend(pParse, 0, pSelectRowid);
  if( pEList == 0 ) goto limit_where_cleanup;








  /* duplicate the FROM clause as it is needed by both the DELETE/UPDATE tree
  ** and the SELECT subtree. */

  pSelectSrc = sqlite3SrcListDup(pParse->db, pSrc, 0);
  if( pSelectSrc == 0 ) {
    sqlite3ExprListDelete(pParse->db, pEList);
    goto limit_where_cleanup;


  }

  /* generate the SELECT expression tree. */
  pSelect = sqlite3SelectNew(pParse,pEList,pSelectSrc,pWhere,0,0,
                             pOrderBy,0,pLimit,pOffset);
  if( pSelect == 0 ) return 0;


  /* now generate the new WHERE rowid IN clause for the DELETE/UDPATE */
  pWhereRowid = sqlite3PExpr(pParse, TK_ROW, 0, 0);
  pInClause = pWhereRowid ? sqlite3PExpr(pParse, TK_IN, pWhereRowid, 0) : 0;
  sqlite3PExprAddSelect(pParse, pInClause, pSelect);
  return pInClause;

limit_where_cleanup:
  sqlite3ExprDelete(pParse->db, pWhere);
  sqlite3ExprListDelete(pParse->db, pOrderBy);
  sqlite3ExprDelete(pParse->db, pLimit);
  sqlite3ExprDelete(pParse->db, pOffset);
  return 0;
}
#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) */
       /*      && !defined(SQLITE_OMIT_SUBQUERY) */

/*
** Generate code for a DELETE FROM statement.
**
................................................................................
**     DELETE FROM table_wxyz WHERE a<5 AND b NOT NULL;
**                 \________/       \________________/
**                  pTabList              pWhere
*/
SQLITE_PRIVATE void sqlite3DeleteFrom(
  Parse *pParse,         /* The parser context */
  SrcList *pTabList,     /* The table from which we should delete things */
  Expr *pWhere           /* The WHERE clause.  May be null */


){
  Vdbe *v;               /* The virtual database engine */
  Table *pTab;           /* The table from which records will be deleted */
  int i;                 /* Loop counter */
  WhereInfo *pWInfo;     /* Information about the WHERE clause */
  Index *pIdx;           /* For looping over indices of the table */
  int iTabCur;           /* Cursor number for the table */
................................................................................

  memset(&sContext, 0, sizeof(sContext));
  db = pParse->db;
  if( pParse->nErr || db->mallocFailed ){
    goto delete_from_cleanup;
  }
  assert( pTabList->nSrc==1 );


  /* Locate the table which we want to delete.  This table has to be
  ** put in an SrcList structure because some of the subroutines we
  ** will be calling are designed to work with multiple tables and expect
  ** an SrcList* parameter instead of just a Table* parameter.
  */
  pTab = sqlite3SrcListLookup(pParse, pTabList);
................................................................................

  /* Figure out if we have any triggers and if the table being
  ** deleted from is a view
  */
#ifndef SQLITE_OMIT_TRIGGER
  pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0);
  isView = pTab->pSelect!=0;
  bComplex = pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0);
#else
# define pTrigger 0
# define isView 0
#endif

#ifdef SQLITE_OMIT_VIEW
# undef isView
# define isView 0
#endif











  /* If pTab is really a view, make sure it has been initialized.
  */
  if( sqlite3ViewGetColumnNames(pParse, pTab) ){
    goto delete_from_cleanup;
  }

................................................................................
  sqlite3BeginWriteOperation(pParse, 1, iDb);

  /* If we are trying to delete from a view, realize that view into
  ** an ephemeral table.
  */
#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
  if( isView ){
    sqlite3MaterializeView(pParse, pTab, pWhere, iTabCur);


    iDataCur = iIdxCur = iTabCur;


  }
#endif

  /* Resolve the column names in the WHERE clause.
  */
  memset(&sNC, 0, sizeof(sNC));
  sNC.pParse = pParse;
................................................................................
    sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows deleted", SQLITE_STATIC);
  }

delete_from_cleanup:
  sqlite3AuthContextPop(&sContext);
  sqlite3SrcListDelete(db, pTabList);
  sqlite3ExprDelete(db, pWhere);




  sqlite3DbFree(db, aToOpen);
  return;
}
/* Make sure "isView" and other macros defined above are undefined. Otherwise
** they may interfere with compilation of other functions in this file
** (or in another file, if this file becomes part of the amalgamation).  */
#ifdef isView
................................................................................
      ** that point.
      **
      ** For a case-insensitive search, set variable cx to be the same as
      ** c but in the other case and search the input string for either
      ** c or cx.
      */
      if( c<=0x80 ){
        u32 cx;
        int bMatch;
        if( noCase ){
          cx = sqlite3Toupper(c);
          c = sqlite3Tolower(c);

        }else{
          cx = c;

        }



        while( (c2 = *(zString++))!=0 ){
          if( c2!=c && c2!=cx ) continue;
          bMatch = patternCompare(zPattern,zString,pInfo,matchOther);
          if( bMatch!=SQLITE_NOMATCH ) return bMatch;
        }
      }else{
        int bMatch;
        while( (c2 = Utf8Read(zString))!=0 ){
          if( c2!=c ) continue;
................................................................................
#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */
    FUNCTION2(unlikely,          1, 0, 0, noopFunc,  SQLITE_FUNC_UNLIKELY),
    FUNCTION2(likelihood,        2, 0, 0, noopFunc,  SQLITE_FUNC_UNLIKELY),
    FUNCTION2(likely,            1, 0, 0, noopFunc,  SQLITE_FUNC_UNLIKELY),
#ifdef SQLITE_DEBUG
    FUNCTION2(affinity,          1, 0, 0, noopFunc,  SQLITE_FUNC_AFFINITY),
#endif




    FUNCTION(ltrim,              1, 1, 0, trimFunc         ),
    FUNCTION(ltrim,              2, 1, 0, trimFunc         ),
    FUNCTION(rtrim,              1, 2, 0, trimFunc         ),
    FUNCTION(rtrim,              2, 2, 0, trimFunc         ),
    FUNCTION(trim,               1, 3, 0, trimFunc         ),
    FUNCTION(trim,               2, 3, 0, trimFunc         ),
    FUNCTION(min,               -1, 0, 1, minmaxFunc       ),
................................................................................
      }
      if( !p ) return;
      iSkip = sqlite3VdbeMakeLabel(v);
      sqlite3VdbeAddOp2(v, OP_FkIfZero, 1, iSkip); VdbeCoverage(v);
    }

    pParse->disableTriggers = 1;
    sqlite3DeleteFrom(pParse, sqlite3SrcListDup(db, pName, 0), 0);
    pParse->disableTriggers = 0;

    /* If the DELETE has generated immediate foreign key constraint 
    ** violations, halt the VDBE and return an error at this point, before
    ** any modifications to the schema are made. This is because statement
    ** transactions are not able to rollback schema changes.  
    **
................................................................................
      if( pRaise ){
        pRaise->affinity = OE_Abort;
      }
      pSelect = sqlite3SelectNew(pParse, 
          sqlite3ExprListAppend(pParse, 0, pRaise),
          sqlite3SrcListAppend(db, 0, &tFrom, 0),
          pWhere,
          0, 0, 0, 0, 0, 0
      );
      pWhere = 0;
    }

    /* Disable lookaside memory allocation */
    db->lookaside.bDisable++;

................................................................................
        sqlite3VdbeAddOp3(v, OP_Column, srcTab, ipkColumn, regRowid);
      }else if( pSelect ){
        sqlite3VdbeAddOp2(v, OP_Copy, regFromSelect+ipkColumn, regRowid);
      }else{
        VdbeOp *pOp;
        sqlite3ExprCode(pParse, pList->a[ipkColumn].pExpr, regRowid);
        pOp = sqlite3VdbeGetOp(v, -1);

        if( ALWAYS(pOp) && pOp->opcode==OP_Null && !IsVirtual(pTab) ){
          appendFlag = 1;
          pOp->opcode = OP_NewRowid;
          pOp->p1 = iDataCur;
          pOp->p2 = regRowid;
          pOp->p3 = regAutoinc;
        }
      }
................................................................................
         (0==pTab->pFKey && 0==sqlite3FkReferences(pTab)))
    ){
      sqlite3VdbeResolveLabel(v, addrUniqueOk);
      continue;
    }

    /* Check to see if the new index entry will be unique */

    sqlite3VdbeAddOp4Int(v, OP_NoConflict, iThisCur, addrUniqueOk,
                         regIdx, pIdx->nKeyCol); VdbeCoverage(v);

    /* Generate code to handle collisions */
    regR = (pIdx==pPk) ? regIdx : sqlite3GetTempRange(pParse, nPkField);
    if( isUpdate || onError==OE_Replace ){
      if( HasRowid(pTab) ){
................................................................................
            regR, nPkField, 0, OE_Replace,
            (pIdx==pPk ? ONEPASS_SINGLE : ONEPASS_OFF), iThisCur);
        seenReplace = 1;
        break;
      }
    }
    sqlite3VdbeResolveLabel(v, addrUniqueOk);

    if( regR!=regIdx ) sqlite3ReleaseTempRange(pParse, regR, nPkField);
  }
  if( ipkTop ){
    sqlite3VdbeGoto(v, ipkTop+1);
    sqlite3VdbeJumpHere(v, ipkBottom);
  }
  
................................................................................
  ** there is no ORDER BY, we will get an error. */
  if( pSelect->pGroupBy ){
    return 0;   /* SELECT may not have a GROUP BY clause */
  }
  if( pSelect->pLimit ){
    return 0;   /* SELECT may not have a LIMIT clause */
  }
  assert( pSelect->pOffset==0 );  /* Must be so if pLimit==0 */
  if( pSelect->pPrior ){
    return 0;   /* SELECT may not be a compound query */
  }
  if( pSelect->selFlags & SF_Distinct ){
    return 0;   /* SELECT may not be DISTINCT */
  }
  pEList = pSelect->pEList;
................................................................................

  zEntry = zProc ? zProc : "sqlite3_extension_init";

  handle = sqlite3OsDlOpen(pVfs, zFile);
#if SQLITE_OS_UNIX || SQLITE_OS_WIN
  for(ii=0; ii<ArraySize(azEndings) && handle==0; ii++){
    char *zAltFile = sqlite3_mprintf("%s.%s", zFile, azEndings[ii]);

    if( zAltFile==0 ) return SQLITE_NOMEM_BKPT;

    handle = sqlite3OsDlOpen(pVfs, zAltFile);
    sqlite3_free(zAltFile);
  }
#endif
  if( handle==0 ){
    if( pzErrMsg ){
      *pzErrMsg = zErrmsg = sqlite3_malloc64(nMsg);
      if( zErrmsg ){
................................................................................
  ** the returned data set are:
  **
  ** cid:        Column id (numbered from left to right, starting at 0)
  ** name:       Column name
  ** type:       Column declaration type.
  ** notnull:    True if 'NOT NULL' is part of column declaration
  ** dflt_value: The default value for the column, if any.

  */
  case PragTyp_TABLE_INFO: if( zRight ){
    Table *pTab;
    pTab = sqlite3LocateTable(pParse, LOCATE_NOERR, zRight, zDb);
    if( pTab ){
      int i, k;
      int nHidden = 0;
................................................................................
  ** We return -1000000 instead of the more usual -1 simply because using
  ** -1000000 as the incorrect index into db->aDb[] is much 
  ** more likely to cause a segfault than -1 (of course there are assert()
  ** statements too, but it never hurts to play the odds).
  */
  assert( sqlite3_mutex_held(db->mutex) );
  if( pSchema ){
    for(i=0; ALWAYS(i<db->nDb); i++){

      if( db->aDb[i].pSchema==pSchema ){
        break;
      }
    }
    assert( i>=0 && i<db->nDb );
  }
  return i;
................................................................................
    sParse.pTriggerPrg = pT->pNext;
    sqlite3DbFree(db, pT);
  }

end_prepare:

  sqlite3ParserReset(&sParse);
  rc = sqlite3ApiExit(db, rc);
  assert( (rc&db->errMask)==rc );
  return rc;
}
static int sqlite3LockAndPrepare(
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  u32 prepFlags,            /* Zero or more SQLITE_PREPARE_* flags */
  Vdbe *pOld,               /* VM being reprepared */
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
  const char **pzTail       /* OUT: End of parsed string */
){
  int rc;


#ifdef SQLITE_ENABLE_API_ARMOR
  if( ppStmt==0 ) return SQLITE_MISUSE_BKPT;
#endif
  *ppStmt = 0;
  if( !sqlite3SafetyCheckOk(db)||zSql==0 ){
    return SQLITE_MISUSE_BKPT;
  }
  sqlite3_mutex_enter(db->mutex);
  sqlite3BtreeEnterAll(db);
  rc = sqlite3Prepare(db, zSql, nBytes, prepFlags, pOld, ppStmt, pzTail);
  if( rc==SQLITE_SCHEMA ){
    sqlite3ResetOneSchema(db, -1);
    sqlite3_finalize(*ppStmt);
    rc = sqlite3Prepare(db, zSql, nBytes, prepFlags, pOld, ppStmt, pzTail);
  }
  sqlite3BtreeLeaveAll(db);
  sqlite3_mutex_leave(db->mutex);
  assert( rc==SQLITE_OK || *ppStmt==0 );



  return rc;
}

/*
** Rerun the compilation of a statement after a schema change.
**
** If the statement is successfully recompiled, return SQLITE_OK. Otherwise,
................................................................................
    sqlite3ExprListDelete(db, p->pEList);
    sqlite3SrcListDelete(db, p->pSrc);
    sqlite3ExprDelete(db, p->pWhere);
    sqlite3ExprListDelete(db, p->pGroupBy);
    sqlite3ExprDelete(db, p->pHaving);
    sqlite3ExprListDelete(db, p->pOrderBy);
    sqlite3ExprDelete(db, p->pLimit);
    sqlite3ExprDelete(db, p->pOffset);
    if( OK_IF_ALWAYS_TRUE(p->pWith) ) sqlite3WithDelete(db, p->pWith);
    if( bFree ) sqlite3DbFreeNN(db, p);
    p = pPrior;
    bFree = 1;
  }
}

................................................................................
  ExprList *pEList,     /* which columns to include in the result */
  SrcList *pSrc,        /* the FROM clause -- which tables to scan */
  Expr *pWhere,         /* the WHERE clause */
  ExprList *pGroupBy,   /* the GROUP BY clause */
  Expr *pHaving,        /* the HAVING clause */
  ExprList *pOrderBy,   /* the ORDER BY clause */
  u32 selFlags,         /* Flag parameters, such as SF_Distinct */
  Expr *pLimit,         /* LIMIT value.  NULL means not used */
  Expr *pOffset         /* OFFSET value.  NULL means no offset */
){
  Select *pNew;
  Select standin;
  pNew = sqlite3DbMallocRawNN(pParse->db, sizeof(*pNew) );
  if( pNew==0 ){
    assert( pParse->db->mallocFailed );
    pNew = &standin;
................................................................................
  pNew->pWhere = pWhere;
  pNew->pGroupBy = pGroupBy;
  pNew->pHaving = pHaving;
  pNew->pOrderBy = pOrderBy;
  pNew->pPrior = 0;
  pNew->pNext = 0;
  pNew->pLimit = pLimit;
  pNew->pOffset = pOffset;
  pNew->pWith = 0;
  assert( pOffset==0 || pLimit!=0 || pParse->nErr>0
                     || pParse->db->mallocFailed!=0 );
  if( pParse->db->mallocFailed ) {
    clearSelect(pParse->db, pNew, pNew!=&standin);
    pNew = 0;
  }else{
    assert( pNew->pSrc!=0 || pParse->nErr>0 );
  }
  assert( pNew!=&standin );
................................................................................
  char const *zOrigDb = 0;
  char const *zOrigTab = 0;
  char const *zOrigCol = 0;
#endif

  assert( pExpr!=0 );
  assert( pNC->pSrcList!=0 );


  switch( pExpr->op ){
    case TK_AGG_COLUMN:
    case TK_COLUMN: {
      /* The expression is a column. Locate the table the column is being
      ** extracted from in NameContext.pSrcList. This table may be real
      ** database table or a subquery.
      */
      Table *pTab = 0;            /* Table structure column is extracted from */
      Select *pS = 0;             /* Select the column is extracted from */
      int iCol = pExpr->iColumn;  /* Index of column in pTab */
      testcase( pExpr->op==TK_AGG_COLUMN );
      testcase( pExpr->op==TK_COLUMN );
      while( pNC && !pTab ){
        SrcList *pTabList = pNC->pSrcList;
        for(j=0;j<pTabList->nSrc && pTabList->a[j].iCursor!=pExpr->iTable;j++);
        if( j<pTabList->nSrc ){
          pTab = pTabList->a[j].pTab;
          pS = pTabList->a[j].pSelect;
        }else{
................................................................................
    return;
  }
#endif

  if( pParse->colNamesSet || db->mallocFailed ) return;
  /* Column names are determined by the left-most term of a compound select */
  while( pSelect->pPrior ) pSelect = pSelect->pPrior;

  pTabList = pSelect->pSrc;
  pEList = pSelect->pEList;
  assert( v!=0 );
  assert( pTabList!=0 );
  pParse->colNamesSet = 1;
  fullName = (db->flags & SQLITE_FullColNames)!=0;
  srcName = (db->flags & SQLITE_ShortColNames)!=0 || fullName;
................................................................................
      /* If the column contains an "AS <name>" phrase, use <name> as the name */
    }else{
      Expr *pColExpr = sqlite3ExprSkipCollate(pEList->a[i].pExpr);
      while( pColExpr->op==TK_DOT ){
        pColExpr = pColExpr->pRight;
        assert( pColExpr!=0 );
      }
      if( (pColExpr->op==TK_COLUMN || pColExpr->op==TK_AGG_COLUMN)
       && pColExpr->pTab!=0 
      ){
        /* For columns use the column name name */
        int iCol = pColExpr->iColumn;
        Table *pTab = pColExpr->pTab;

        if( iCol<0 ) iCol = pTab->iPKey;
        zName = iCol>=0 ? pTab->aCol[iCol].zName : "rowid";
      }else if( pColExpr->op==TK_ID ){
        assert( !ExprHasProperty(pColExpr, EP_IntValue) );
        zName = pColExpr->u.zToken;
      }else{
        /* Use the original text of the column expression as its name */
................................................................................
  }
  return sqlite3VdbeCreate(pParse);
}


/*
** Compute the iLimit and iOffset fields of the SELECT based on the
** pLimit and pOffset expressions.  pLimit and pOffset hold the expressions
** that appear in the original SQL statement after the LIMIT and OFFSET
** keywords.  Or NULL if those keywords are omitted. iLimit and iOffset 
** are the integer memory register numbers for counters used to compute 
** the limit and offset.  If there is no limit and/or offset, then 
** iLimit and iOffset are negative.
**
** This routine changes the values of iLimit and iOffset only if
** a limit or offset is defined by pLimit and pOffset.  iLimit and
** iOffset should have been preset to appropriate default values (zero)
** prior to calling this routine.
**
** The iOffset register (if it exists) is initialized to the value
** of the OFFSET.  The iLimit register is initialized to LIMIT.  Register
** iOffset+1 is initialized to LIMIT+OFFSET.
**
** Only if pLimit!=0 or pOffset!=0 do the limit registers get
** redefined.  The UNION ALL operator uses this property to force
** the reuse of the same limit and offset registers across multiple
** SELECT statements.
*/
static void computeLimitRegisters(Parse *pParse, Select *p, int iBreak){
  Vdbe *v = 0;
  int iLimit = 0;
  int iOffset;
  int n;


  if( p->iLimit ) return;

  /* 
  ** "LIMIT -1" always shows all rows.  There is some
  ** controversy about what the correct behavior should be.
  ** The current implementation interprets "LIMIT 0" to mean
  ** no rows.
  */
  sqlite3ExprCacheClear(pParse);
  assert( p->pOffset==0 || p->pLimit!=0 );
  if( p->pLimit ){

    p->iLimit = iLimit = ++pParse->nMem;
    v = sqlite3GetVdbe(pParse);
    assert( v!=0 );
    if( sqlite3ExprIsInteger(p->pLimit, &n) ){
      sqlite3VdbeAddOp2(v, OP_Integer, n, iLimit);
      VdbeComment((v, "LIMIT counter"));
      if( n==0 ){
        sqlite3VdbeGoto(v, iBreak);
      }else if( n>=0 && p->nSelectRow>sqlite3LogEst((u64)n) ){
        p->nSelectRow = sqlite3LogEst((u64)n);
        p->selFlags |= SF_FixedLimit;
      }
    }else{
      sqlite3ExprCode(pParse, p->pLimit, iLimit);
      sqlite3VdbeAddOp1(v, OP_MustBeInt, iLimit); VdbeCoverage(v);
      VdbeComment((v, "LIMIT counter"));
      sqlite3VdbeAddOp2(v, OP_IfNot, iLimit, iBreak); VdbeCoverage(v);
    }
    if( p->pOffset ){
      p->iOffset = iOffset = ++pParse->nMem;
      pParse->nMem++;   /* Allocate an extra register for limit+offset */
      sqlite3ExprCode(pParse, p->pOffset, iOffset);
      sqlite3VdbeAddOp1(v, OP_MustBeInt, iOffset); VdbeCoverage(v);
      VdbeComment((v, "OFFSET counter"));
      sqlite3VdbeAddOp3(v, OP_OffsetLimit, iLimit, iOffset+1, iOffset);
      VdbeComment((v, "LIMIT+OFFSET"));
    }
  }
}
................................................................................
  int iQueue;                   /* The Queue table */
  int iDistinct = 0;            /* To ensure unique results if UNION */
  int eDest = SRT_Fifo;         /* How to write to Queue */
  SelectDest destQueue;         /* SelectDest targetting the Queue table */
  int i;                        /* Loop counter */
  int rc;                       /* Result code */
  ExprList *pOrderBy;           /* The ORDER BY clause */
  Expr *pLimit, *pOffset;       /* Saved LIMIT and OFFSET */
  int regLimit, regOffset;      /* Registers used by LIMIT and OFFSET */

  /* Obtain authorization to do a recursive query */
  if( sqlite3AuthCheck(pParse, SQLITE_RECURSIVE, 0, 0, 0) ) return;

  /* Process the LIMIT and OFFSET clauses, if they exist */
  addrBreak = sqlite3VdbeMakeLabel(v);
  p->nSelectRow = 320;  /* 4 billion rows */
  computeLimitRegisters(pParse, p, addrBreak);
  pLimit = p->pLimit;
  pOffset = p->pOffset;
  regLimit = p->iLimit;
  regOffset = p->iOffset;
  p->pLimit = p->pOffset = 0;
  p->iLimit = p->iOffset = 0;
  pOrderBy = p->pOrderBy;

  /* Locate the cursor number of the Current table */
  for(i=0; ALWAYS(i<pSrc->nSrc); i++){
    if( pSrc->a[i].fg.isRecursive ){
      iCurrent = pSrc->a[i].iCursor;
................................................................................
  sqlite3VdbeGoto(v, addrTop);
  sqlite3VdbeResolveLabel(v, addrBreak);

end_of_recursive_query:
  sqlite3ExprListDelete(pParse->db, p->pOrderBy);
  p->pOrderBy = pOrderBy;
  p->pLimit = pLimit;
  p->pOffset = pOffset;
  return;
}
#endif /* SQLITE_OMIT_CTE */

/* Forward references */
static int multiSelectOrderBy(
  Parse *pParse,        /* Parsing context */
................................................................................
  int nRow = 1;
  int rc = 0;
  assert( p->selFlags & SF_MultiValue );
  do{
    assert( p->selFlags & SF_Values );
    assert( p->op==TK_ALL || (p->op==TK_SELECT && p->pPrior==0) );
    assert( p->pLimit==0 );
    assert( p->pOffset==0 );
    assert( p->pNext==0 || p->pEList->nExpr==p->pNext->pEList->nExpr );
    if( p->pPrior==0 ) break;
    assert( p->pPrior->pNext==p );
    p = p->pPrior;
    nRow++;
  }while(1);
  while( p ){
................................................................................
    case TK_ALL: {
      int addr = 0;
      int nLimit;
      assert( !pPrior->pLimit );
      pPrior->iLimit = p->iLimit;
      pPrior->iOffset = p->iOffset;
      pPrior->pLimit = p->pLimit;
      pPrior->pOffset = p->pOffset;
      explainSetInteger(iSub1, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, pPrior, &dest);
      p->pLimit = 0;
      p->pOffset = 0;
      if( rc ){
        goto multi_select_end;
      }
      p->pPrior = 0;
      p->iLimit = pPrior->iLimit;
      p->iOffset = pPrior->iOffset;
      if( p->iLimit ){
................................................................................
      explainSetInteger(iSub2, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, p, &dest);
      testcase( rc!=SQLITE_OK );
      pDelete = p->pPrior;
      p->pPrior = pPrior;
      p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow);
      if( pPrior->pLimit
       && sqlite3ExprIsInteger(pPrior->pLimit, &nLimit)
       && nLimit>0 && p->nSelectRow > sqlite3LogEst((u64)nLimit) 
      ){
        p->nSelectRow = sqlite3LogEst((u64)nLimit);
      }
      if( addr ){
        sqlite3VdbeJumpHere(v, addr);
      }
................................................................................
      break;
    }
    case TK_EXCEPT:
    case TK_UNION: {
      int unionTab;    /* Cursor number of the temporary table holding result */
      u8 op = 0;       /* One of the SRT_ operations to apply to self */
      int priorOp;     /* The SRT_ operation to apply to prior selects */
      Expr *pLimit, *pOffset; /* Saved values of p->nLimit and p->nOffset */
      int addr;
      SelectDest uniondest;

      testcase( p->op==TK_EXCEPT );
      testcase( p->op==TK_UNION );
      priorOp = SRT_Union;
      if( dest.eDest==priorOp ){
        /* We can reuse a temporary table generated by a SELECT to our
        ** right.
        */
        assert( p->pLimit==0 );      /* Not allowed on leftward elements */
        assert( p->pOffset==0 );     /* Not allowed on leftward elements */
        unionTab = dest.iSDParm;
      }else{
        /* We will need to create our own temporary table to hold the
        ** intermediate results.
        */
        unionTab = pParse->nTab++;
        assert( p->pOrderBy==0 );
................................................................................
      }else{
        assert( p->op==TK_UNION );
        op = SRT_Union;
      }
      p->pPrior = 0;
      pLimit = p->pLimit;
      p->pLimit = 0;
      pOffset = p->pOffset;
      p->pOffset = 0;
      uniondest.eDest = op;
      explainSetInteger(iSub2, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, p, &uniondest);
      testcase( rc!=SQLITE_OK );
      /* Query flattening in sqlite3Select() might refill p->pOrderBy.
      ** Be sure to delete p->pOrderBy, therefore, to avoid a memory leak. */
      sqlite3ExprListDelete(db, p->pOrderBy);
................................................................................
      p->pPrior = pPrior;
      p->pOrderBy = 0;
      if( p->op==TK_UNION ){
        p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow);
      }
      sqlite3ExprDelete(db, p->pLimit);
      p->pLimit = pLimit;
      p->pOffset = pOffset;
      p->iLimit = 0;
      p->iOffset = 0;

      /* Convert the data in the temporary table into whatever form
      ** it is that we currently need.
      */
      assert( unionTab==dest.iSDParm || dest.eDest!=priorOp );
................................................................................
        sqlite3VdbeAddOp2(v, OP_Close, unionTab, 0);
      }
      break;
    }
    default: assert( p->op==TK_INTERSECT ); {
      int tab1, tab2;
      int iCont, iBreak, iStart;
      Expr *pLimit, *pOffset;
      int addr;
      SelectDest intersectdest;
      int r1;

      /* INTERSECT is different from the others since it requires
      ** two temporary tables.  Hence it has its own case.  Begin
      ** by allocating the tables we will need.
................................................................................
      */
      addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab2, 0);
      assert( p->addrOpenEphm[1] == -1 );
      p->addrOpenEphm[1] = addr;
      p->pPrior = 0;
      pLimit = p->pLimit;
      p->pLimit = 0;
      pOffset = p->pOffset;
      p->pOffset = 0;
      intersectdest.iSDParm = tab2;
      explainSetInteger(iSub2, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, p, &intersectdest);
      testcase( rc!=SQLITE_OK );
      pDelete = p->pPrior;
      p->pPrior = pPrior;
      if( p->nSelectRow>pPrior->nSelectRow ) p->nSelectRow = pPrior->nSelectRow;
      sqlite3ExprDelete(db, p->pLimit);
      p->pLimit = pLimit;
      p->pOffset = pOffset;

      /* Generate code to take the intersection of the two temporary
      ** tables.
      */
      assert( p->pEList );
      iBreak = sqlite3VdbeMakeLabel(v);
      iCont = sqlite3VdbeMakeLabel(v);
................................................................................
                                  regLimitA);
    sqlite3VdbeAddOp2(v, OP_Copy, regLimitA, regLimitB);
  }else{
    regLimitA = regLimitB = 0;
  }
  sqlite3ExprDelete(db, p->pLimit);
  p->pLimit = 0;
  sqlite3ExprDelete(db, p->pOffset);
  p->pOffset = 0;

  regAddrA = ++pParse->nMem;
  regAddrB = ++pParse->nMem;
  regOutA = ++pParse->nMem;
  regOutB = ++pParse->nMem;
  sqlite3SelectDestInit(&destA, SRT_Coroutine, regAddrA);
  sqlite3SelectDestInit(&destB, SRT_Coroutine, regAddrB);
................................................................................
**  (18)  If the sub-query is a compound select, then all terms of the
**        ORDER BY clause of the parent must be simple references to 
**        columns of the sub-query.
**
**  (19)  If the subquery uses LIMIT then the outer query may not
**        have a WHERE clause.
**
**  (**)  Subsumed into (17d3).  Was: If the sub-query is a compound select,
**        then it must not use an ORDER BY clause - Ticket #3773.  Because
**        of (17d3), then only way to have a compound subquery is if it is
**        the only term in the FROM clause of the outer query.  But if the
**        only term in the FROM clause has an ORDER BY, then it will be
**        implemented as a co-routine and the flattener will never be called.
**
**  (21)  If the subquery uses LIMIT then the outer query may not be
**        DISTINCT.  (See ticket [752e1646fc]).
**
**  (22)  The subquery may not be a recursive CTE.
**
**  (**)  Subsumed into restriction (17d3).  Was: If the outer query is
................................................................................
  assert( pSubSrc );
  /* Prior to version 3.1.2, when LIMIT and OFFSET had to be simple constants,
  ** not arbitrary expressions, we allowed some combining of LIMIT and OFFSET
  ** because they could be computed at compile-time.  But when LIMIT and OFFSET
  ** became arbitrary expressions, we were forced to add restrictions (13)
  ** and (14). */
  if( pSub->pLimit && p->pLimit ) return 0;              /* Restriction (13) */
  if( pSub->pOffset ) return 0;                          /* Restriction (14) */
  if( (p->selFlags & SF_Compound)!=0 && pSub->pLimit ){
    return 0;                                            /* Restriction (15) */
  }
  if( pSubSrc->nSrc==0 ) return 0;                       /* Restriction (7)  */
  if( pSub->selFlags & SF_Distinct ) return 0;           /* Restriction (4)  */
  if( pSub->pLimit && (pSrc->nSrc>1 || isAgg) ){
     return 0;         /* Restrictions (8)(9) */
................................................................................

  /* Restriction (17): If the sub-query is a compound SELECT, then it must
  ** use only the UNION ALL operator. And none of the simple select queries
  ** that make up the compound SELECT are allowed to be aggregate or distinct
  ** queries.
  */
  if( pSub->pPrior ){



    if( isAgg || (p->selFlags & SF_Distinct)!=0 || pSrc->nSrc!=1 ){
      return 0; /* (17d1), (17d2), or (17d3) */
    }
    for(pSub1=pSub; pSub1; pSub1=pSub1->pPrior){
      testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct );
      testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Aggregate );
      assert( pSub->pSrc!=0 );
................................................................................
  ** The only way that the recursive part of a CTE can contain a compound
  ** subquery is for the subquery to be one term of a join.  But if the
  ** subquery is a join, then the flattening has already been stopped by
  ** restriction (17d3)
  */
  assert( (p->selFlags & SF_Recursive)==0 || pSub->pPrior==0 );

  /* Ex-restriction (20):
  ** A compound subquery must be the only term in the FROM clause of the
  ** outer query by restriction (17d3).  But if that term also has an
  ** ORDER BY clause, then the subquery will be implemented by co-routine
  ** and so the flattener will never be invoked.  Hence, it is not possible
  ** for the subquery to be a compound and have an ORDER BY clause.
  */
  assert( pSub->pPrior==0 || pSub->pOrderBy==0 );

  /***** If we reach this point, flattening is permitted. *****/
  SELECTTRACE(1,pParse,p,("flatten %s.%p from term %d\n",
                   pSub->zSelName, pSub, iFrom));

  /* Authorize the subquery */
  pParse->zAuthContext = pSubitem->zName;
  TESTONLY(i =) sqlite3AuthCheck(pParse, SQLITE_SELECT, 0, 0, 0);
................................................................................
  **
  ** We call this the "compound-subquery flattening".
  */
  for(pSub=pSub->pPrior; pSub; pSub=pSub->pPrior){
    Select *pNew;
    ExprList *pOrderBy = p->pOrderBy;
    Expr *pLimit = p->pLimit;
    Expr *pOffset = p->pOffset;
    Select *pPrior = p->pPrior;
    p->pOrderBy = 0;
    p->pSrc = 0;
    p->pPrior = 0;
    p->pLimit = 0;
    p->pOffset = 0;
    pNew = sqlite3SelectDup(db, p, 0);
    sqlite3SelectSetName(pNew, pSub->zSelName);
    p->pOffset = pOffset;
    p->pLimit = pLimit;
    p->pOrderBy = pOrderBy;
    p->pSrc = pSrc;
    p->op = TK_ALL;
    if( pNew==0 ){
      p->pPrior = pPrior;
    }else{
................................................................................
    }
  }
  return nChng;
}
#endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */

/*
** Based on the contents of the AggInfo structure indicated by the first
** argument, this function checks if the following are true:
**
**    * the query contains just a single aggregate function,
**    * the aggregate function is either min() or max(), and
**    * the argument to the aggregate function is a column value.
**
** If all of the above are true, then WHERE_ORDERBY_MIN or WHERE_ORDERBY_MAX
** is returned as appropriate. Also, *ppMinMax is set to point to the 
** list of arguments passed to the aggregate before returning.
**
** Or, if the conditions above are not met, *ppMinMax is set to 0 and
** WHERE_ORDERBY_NORMAL is returned.
*/
static u8 minMaxQuery(AggInfo *pAggInfo, ExprList **ppMinMax){
  int eRet = WHERE_ORDERBY_NORMAL;          /* Return value */

  *ppMinMax = 0;
  if( pAggInfo->nFunc==1 ){
    Expr *pExpr = pAggInfo->aFunc[0].pExpr; /* Aggregate function */
    ExprList *pEList = pExpr->x.pList;      /* Arguments to agg function */

    assert( pExpr->op==TK_AGG_FUNCTION );
    if( pEList && pEList->nExpr==1 && pEList->a[0].pExpr->op==TK_AGG_COLUMN ){
      const char *zFunc = pExpr->u.zToken;
      if( sqlite3StrICmp(zFunc, "min")==0 ){
        eRet = WHERE_ORDERBY_MIN;
        *ppMinMax = pEList;
      }else if( sqlite3StrICmp(zFunc, "max")==0 ){
        eRet = WHERE_ORDERBY_MAX;
        *ppMinMax = pEList;
      }
    }
  }

  assert( *ppMinMax==0 || (*ppMinMax)->nExpr==1 );


  return eRet;
}

/*
** The select statement passed as the first argument is an aggregate query.
** The second argument is the associated aggregate-info object. This 
** function tests if the SELECT is of the form:
................................................................................
  p->pWith = 0;
  p->selFlags &= ~SF_Compound;
  assert( (p->selFlags & SF_Converted)==0 );
  p->selFlags |= SF_Converted;
  assert( pNew->pPrior!=0 );
  pNew->pPrior->pNext = pNew;
  pNew->pLimit = 0;
  pNew->pOffset = 0;
  return WRC_Continue;
}

/*
** Check to see if the FROM clause term pFrom has table-valued function
** arguments.  If it does, leave an error message in pParse and return
** non-zero, since pFrom is not allowed to be a table-valued function.
................................................................................
  int i, j, k;
  SrcList *pTabList;
  ExprList *pEList;
  struct SrcList_item *pFrom;
  sqlite3 *db = pParse->db;
  Expr *pE, *pRight, *pExpr;
  u16 selFlags = p->selFlags;


  p->selFlags |= SF_Expanded;
  if( db->mallocFailed  ){
    return WRC_Abort;
  }

  if( NEVER(p->pSrc==0) || (selFlags & SF_Expanded)!=0 ){
    return WRC_Prune;
  }
  pTabList = p->pSrc;
  pEList = p->pEList;
  if( OK_IF_ALWAYS_TRUE(p->pWith) ){
    sqlite3WithPush(pParse, p->pWith, 0);
  }
................................................................................
  */
  for(k=0; k<pEList->nExpr; k++){
    pE = pEList->a[k].pExpr;
    if( pE->op==TK_ASTERISK ) break;
    assert( pE->op!=TK_DOT || pE->pRight!=0 );
    assert( pE->op!=TK_DOT || (pE->pLeft!=0 && pE->pLeft->op==TK_ID) );
    if( pE->op==TK_DOT && pE->pRight->op==TK_ASTERISK ) break;

  }
  if( k<pEList->nExpr ){
    /*
    ** If we get here it means the result set contains one or more "*"
    ** operators that need to be expanded.  Loop through each expression
    ** in the result set and expand them one by one.
    */
................................................................................
    ExprList *pNew = 0;
    int flags = pParse->db->flags;
    int longNames = (flags & SQLITE_FullColNames)!=0
                      && (flags & SQLITE_ShortColNames)==0;

    for(k=0; k<pEList->nExpr; k++){
      pE = a[k].pExpr;

      pRight = pE->pRight;
      assert( pE->op!=TK_DOT || pRight!=0 );
      if( pE->op!=TK_ASTERISK
       && (pE->op!=TK_DOT || pRight->op!=TK_ASTERISK)
      ){
        /* This particular expression does not need to be expanded.
        */
................................................................................
          }
        }
      }
    }
    sqlite3ExprListDelete(db, pEList);
    p->pEList = pNew;
  }

  if( p->pEList && p->pEList->nExpr>db->aLimit[SQLITE_LIMIT_COLUMN] ){
    sqlite3ErrorMsg(pParse, "too many columns in result set");
    return WRC_Abort;




  }
  return WRC_Continue;
}

/*
** No-op routine for the parse-tree walker.
**
................................................................................
  Expr *pHaving;         /* The HAVING clause.  May be NULL */
  int rc = 1;            /* Value to return from this function */
  DistinctCtx sDistinct; /* Info on how to code the DISTINCT keyword */
  SortCtx sSort;         /* Info on how to code the ORDER BY clause */
  AggInfo sAggInfo;      /* Information used by aggregate queries */
  int iEnd;              /* Address of the end of the query */
  sqlite3 *db;           /* The database connection */



#ifndef SQLITE_OMIT_EXPLAIN
  int iRestoreSelectId = pParse->iSelectId;
  pParse->iSelectId = pParse->iNextSelectId++;
#endif

  db = pParse->db;
................................................................................
    ** is not a join.  But if the outer query is not a join, then the subquery
    ** will be implemented as a co-routine and there is no advantage to
    ** flattening in that case.
    */
    if( (pSub->selFlags & SF_Aggregate)!=0 ) continue;
    assert( pSub->pGroupBy==0 );



    /* If the subquery contains an ORDER BY clause and if
    ** it will be implemented as a co-routine, then do not flatten.  This
    ** restriction allows SQL constructs like this:
    **
    **  SELECT expensive_function(x)
    **    FROM (SELECT x FROM tab ORDER BY y LIMIT 10);
    **
    ** The expensive_function() is only computed on the 10 rows that
    ** are output, rather than every row of the table.






    */
    if( pSub->pOrderBy!=0
     && i==0

     && (pTabList->nSrc==1
         || (pTabList->a[1].fg.jointype&(JT_LEFT|JT_CROSS))!=0)
    ){
      continue;
    }

    if( flattenSubquery(pParse, p, i, isAgg) ){
................................................................................
        assert( pWhere==p->pWhere );
        havingToWhere(pParse, pGroupBy, pHaving, &p->pWhere);
        pWhere = p->pWhere;
      }
      sqlite3ExprAnalyzeAggregates(&sNC, pHaving);
    }
    sAggInfo.nAccumulator = sAggInfo.nColumn;





    for(i=0; i<sAggInfo.nFunc; i++){
      assert( !ExprHasProperty(sAggInfo.aFunc[i].pExpr, EP_xIsSelect) );
      sNC.ncFlags |= NC_InAggFunc;
      sqlite3ExprAnalyzeAggList(&sNC, sAggInfo.aFunc[i].pExpr->x.pList);
      sNC.ncFlags &= ~NC_InAggFunc;
    }
    sAggInfo.mxReg = pParse->nMem;
    if( db->mallocFailed ) goto select_end;



















    /* Processing for aggregates with GROUP BY is very different and
    ** much more complex than aggregates without a GROUP BY.
    */
    if( pGroupBy ){
      KeyInfo *pKeyInfo;  /* Keying information for the group by clause */
      int addr1;          /* A-vs-B comparision jump */
................................................................................
      */
      sqlite3VdbeResolveLabel(v, addrReset);
      resetAccumulator(pParse, &sAggInfo);
      sqlite3VdbeAddOp1(v, OP_Return, regReset);
     
    } /* endif pGroupBy.  Begin aggregate queries without GROUP BY: */
    else {
      ExprList *pDel = 0;
#ifndef SQLITE_OMIT_BTREECOUNT
      Table *pTab;
      if( (pTab = isSimpleCount(p, &sAggInfo))!=0 ){
        /* If isSimpleCount() returns a pointer to a Table structure, then
        ** the SQL statement is of the form:
        **
        **   SELECT count(*) FROM <tbl>
................................................................................
        }
        sqlite3VdbeAddOp2(v, OP_Count, iCsr, sAggInfo.aFunc[0].iMem);
        sqlite3VdbeAddOp1(v, OP_Close, iCsr);
        explainSimpleCount(pParse, pTab, pBest);
      }else
#endif /* SQLITE_OMIT_BTREECOUNT */
      {
        /* Check if the query is of one of the following forms:
        **
        **   SELECT min(x) FROM ...
        **   SELECT max(x) FROM ...
        **
        ** If it is, then ask the code in where.c to attempt to sort results
        ** as if there was an "ORDER ON x" or "ORDER ON x DESC" clause. 
        ** If where.c is able to produce results sorted in this order, then
        ** add vdbe code to break out of the processing loop after the 
        ** first iteration (since the first iteration of the loop is 
        ** guaranteed to operate on the row with the minimum or maximum 
        ** value of x, the only row required).
        **
        ** A special flag must be passed to sqlite3WhereBegin() to slightly
        ** modify behavior as follows:
        **
        **   + If the query is a "SELECT min(x)", then the loop coded by
        **     where.c should not iterate over any values with a NULL value
        **     for x.
        **
        **   + The optimizer code in where.c (the thing that decides which
        **     index or indices to use) should place a different priority on 
        **     satisfying the 'ORDER BY' clause than it does in other cases.
        **     Refer to code and comments in where.c for details.
        */
        ExprList *pMinMax = 0;
        u8 flag = WHERE_ORDERBY_NORMAL;
        
        assert( p->pGroupBy==0 );
        assert( flag==0 );
        if( p->pHaving==0 ){
          flag = minMaxQuery(&sAggInfo, &pMinMax);
        }
        assert( flag==0 || (pMinMax!=0 && pMinMax->nExpr==1) );

        if( flag ){
          pMinMax = sqlite3ExprListDup(db, pMinMax, 0);
          pDel = pMinMax;
          assert( db->mallocFailed || pMinMax!=0 );
          if( !db->mallocFailed ){
            pMinMax->a[0].sortOrder = flag!=WHERE_ORDERBY_MIN ?1:0;
            pMinMax->a[0].pExpr->op = TK_COLUMN;
          }
        }
  
        /* This case runs if the aggregate has no GROUP BY clause.  The
        ** processing is much simpler since there is only a single row
        ** of output.
        */

        resetAccumulator(pParse, &sAggInfo);









        pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, pMinMax, 0,flag,0);

        if( pWInfo==0 ){
          sqlite3ExprListDelete(db, pDel);
          goto select_end;
        }
        updateAccumulator(pParse, &sAggInfo);
        assert( pMinMax==0 || pMinMax->nExpr==1 );
        if( sqlite3WhereIsOrdered(pWInfo)>0 ){
          sqlite3VdbeGoto(v, sqlite3WhereBreakLabel(pWInfo));
          VdbeComment((v, "%s() by index",
                (flag==WHERE_ORDERBY_MIN?"min":"max")));
        }
        sqlite3WhereEnd(pWInfo);
        finalizeAggFunctions(pParse, &sAggInfo);
      }

      sSort.pOrderBy = 0;
      sqlite3ExprIfFalse(pParse, pHaving, addrEnd, SQLITE_JUMPIFNULL);
      selectInnerLoop(pParse, p, -1, 0, 0, 
                      pDest, addrEnd, addrEnd);
      sqlite3ExprListDelete(db, pDel);
    }
    sqlite3VdbeResolveLabel(v, addrEnd);
    
  } /* endif aggregate query */

  if( sDistinct.eTnctType==WHERE_DISTINCT_UNORDERED ){
    explainTempTable(pParse, "DISTINCT");
................................................................................
  rc = (pParse->nErr>0);

  /* Control jumps to here if an error is encountered above, or upon
  ** successful coding of the SELECT.
  */
select_end:
  explainSetInteger(pParse->iSelectId, iRestoreSelectId);

  sqlite3DbFree(db, sAggInfo.aCol);
  sqlite3DbFree(db, sAggInfo.aFunc);
#if SELECTTRACE_ENABLED
  SELECTTRACE(1,pParse,p,("end processing\n"));
  pParse->nSelectIndent--;
#endif
  return rc;
................................................................................
    TriggerStep * pTmp = pTriggerStep;
    pTriggerStep = pTriggerStep->pNext;

    sqlite3ExprDelete(db, pTmp->pWhere);
    sqlite3ExprListDelete(db, pTmp->pExprList);
    sqlite3SelectDelete(db, pTmp->pSelect);
    sqlite3IdListDelete(db, pTmp->pIdList);


    sqlite3DbFree(db, pTmp);
  }
}

/*
** Given table pTab, return a list of all the triggers attached to 
................................................................................

triggerfinish_cleanup:
  sqlite3DeleteTrigger(db, pTrig);
  assert( !pParse->pNewTrigger );
  sqlite3DeleteTriggerStep(db, pStepList);
}












/*
** Turn a SELECT statement (that the pSelect parameter points to) into
** a trigger step.  Return a pointer to a TriggerStep structure.
**
** The parser calls this routine when it finds a SELECT statement in
** body of a TRIGGER.  
*/
SQLITE_PRIVATE TriggerStep *sqlite3TriggerSelectStep(sqlite3 *db, Select *pSelect){





  TriggerStep *pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep));
  if( pTriggerStep==0 ) {
    sqlite3SelectDelete(db, pSelect);
    return 0;
  }
  pTriggerStep->op = TK_SELECT;
  pTriggerStep->pSelect = pSelect;
  pTriggerStep->orconf = OE_Default;

  return pTriggerStep;
}

/*
** Allocate space to hold a new trigger step.  The allocated space
** holds both the TriggerStep object and the TriggerStep.target.z string.
**
** If an OOM error occurs, NULL is returned and db->mallocFailed is set.
*/
static TriggerStep *triggerStepAllocate(
  sqlite3 *db,                /* Database connection */
  u8 op,                      /* Trigger opcode */
  Token *pName                /* The target name */


){
  TriggerStep *pTriggerStep;

  pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep) + pName->n + 1);
  if( pTriggerStep ){
    char *z = (char*)&pTriggerStep[1];
    memcpy(z, pName->z, pName->n);
    sqlite3Dequote(z);
    pTriggerStep->zTarget = z;
    pTriggerStep->op = op;

  }
  return pTriggerStep;
}

/*
** Build a trigger step out of an INSERT statement.  Return a pointer
** to the new trigger step.
................................................................................
** body of a trigger.
*/
SQLITE_PRIVATE TriggerStep *sqlite3TriggerInsertStep(
  sqlite3 *db,        /* The database connection */
  Token *pTableName,  /* Name of the table into which we insert */
  IdList *pColumn,    /* List of columns in pTableName to insert into */
  Select *pSelect,    /* A SELECT statement that supplies values */
  u8 orconf           /* The conflict algorithm (OE_Abort, OE_Replace, etc.) */


){
  TriggerStep *pTriggerStep;

  assert(pSelect != 0 || db->mallocFailed);

  pTriggerStep = triggerStepAllocate(db, TK_INSERT, pTableName);
  if( pTriggerStep ){
    pTriggerStep->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE);
    pTriggerStep->pIdList = pColumn;
    pTriggerStep->orconf = orconf;
  }else{
    sqlite3IdListDelete(db, pColumn);
  }
................................................................................
** sees an UPDATE statement inside the body of a CREATE TRIGGER.
*/
SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep(
  sqlite3 *db,         /* The database connection */
  Token *pTableName,   /* Name of the table to be updated */
  ExprList *pEList,    /* The SET clause: list of column and new values */
  Expr *pWhere,        /* The WHERE clause */
  u8 orconf            /* The conflict algorithm. (OE_Abort, OE_Ignore, etc) */


){
  TriggerStep *pTriggerStep;

  pTriggerStep = triggerStepAllocate(db, TK_UPDATE, pTableName);
  if( pTriggerStep ){
    pTriggerStep->pExprList = sqlite3ExprListDup(db, pEList, EXPRDUP_REDUCE);
    pTriggerStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE);
    pTriggerStep->orconf = orconf;
  }
  sqlite3ExprListDelete(db, pEList);
  sqlite3ExprDelete(db, pWhere);
................................................................................
** Construct a trigger step that implements a DELETE statement and return
** a pointer to that trigger step.  The parser calls this routine when it
** sees a DELETE statement inside the body of a CREATE TRIGGER.
*/
SQLITE_PRIVATE TriggerStep *sqlite3TriggerDeleteStep(
  sqlite3 *db,            /* Database connection */
  Token *pTableName,      /* The table from which rows are deleted */
  Expr *pWhere            /* The WHERE clause */


){
  TriggerStep *pTriggerStep;

  pTriggerStep = triggerStepAllocate(db, TK_DELETE, pTableName);
  if( pTriggerStep ){
    pTriggerStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE);
    pTriggerStep->orconf = OE_Default;
  }
  sqlite3ExprDelete(db, pWhere);
  return pTriggerStep;
}
................................................................................
    **   END;
    **
    **   INSERT INTO t1 ... ;            -- insert into t2 uses REPLACE policy
    **   INSERT OR IGNORE INTO t1 ... ;  -- insert into t2 uses IGNORE policy
    */
    pParse->eOrconf = (orconf==OE_Default)?pStep->orconf:(u8)orconf;
    assert( pParse->okConstFactor==0 );









    switch( pStep->op ){
      case TK_UPDATE: {
        sqlite3Update(pParse, 
          targetSrcList(pParse, pStep),
          sqlite3ExprListDup(db, pStep->pExprList, 0), 
          sqlite3ExprDup(db, pStep->pWhere, 0), 
          pParse->eOrconf
        );
        break;
      }
      case TK_INSERT: {
        sqlite3Insert(pParse, 
          targetSrcList(pParse, pStep),
          sqlite3SelectDup(db, pStep->pSelect, 0), 
................................................................................
          pParse->eOrconf
        );
        break;
      }
      case TK_DELETE: {
        sqlite3DeleteFrom(pParse, 
          targetSrcList(pParse, pStep),
          sqlite3ExprDup(db, pStep->pWhere, 0)
        );
        break;
      }
      default: assert( pStep->op==TK_SELECT ); {
        SelectDest sDest;
        Select *pSelect = sqlite3SelectDup(db, pStep->pSelect, 0);
        sqlite3SelectDestInit(&sDest, SRT_Discard, 0);
................................................................................
      (pTrigger->tr_tm==TRIGGER_BEFORE ? "BEFORE" : "AFTER"),
        (pTrigger->op==TK_UPDATE ? "UPDATE" : ""),
        (pTrigger->op==TK_INSERT ? "INSERT" : ""),
        (pTrigger->op==TK_DELETE ? "DELETE" : ""),
      pTab->zName
    ));
#ifndef SQLITE_OMIT_TRACE

    sqlite3VdbeChangeP4(v, -1, 
      sqlite3MPrintf(db, "-- TRIGGER %s", pTrigger->zName), P4_DYNAMIC
    );

#endif

    /* If one was specified, code the WHEN clause. If it evaluates to false
    ** (or NULL) the sub-vdbe is immediately halted by jumping to the 
    ** OP_Halt inserted at the end of the program.  */
    if( pTrigger->pWhen ){
      pWhen = sqlite3ExprDup(db, pTrigger->pWhen, 0);
................................................................................
    if( iEndTrigger ){
      sqlite3VdbeResolveLabel(v, iEndTrigger);
    }
    sqlite3VdbeAddOp0(v, OP_Halt);
    VdbeComment((v, "End: %s.%s", pTrigger->zName, onErrorText(orconf)));

    transferParseError(pParse, pSubParse);
    if( db->mallocFailed==0 ){
      pProgram->aOp = sqlite3VdbeTakeOpArray(v, &pProgram->nOp, &pTop->nMaxArg);
    }
    pProgram->nMem = pSubParse->nMem;
    pProgram->nCsr = pSubParse->nTab;
    pProgram->token = (void *)pTrigger;
    pPrg->aColmask[0] = pSubParse->oldmask;
    pPrg->aColmask[1] = pSubParse->newmask;
................................................................................
*            onError   pTabList      pChanges             pWhere
*/
SQLITE_PRIVATE void sqlite3Update(
  Parse *pParse,         /* The parser context */
  SrcList *pTabList,     /* The table in which we should change things */
  ExprList *pChanges,    /* Things to be changed */
  Expr *pWhere,          /* The WHERE clause.  May be null */
  int onError            /* How to handle constraint errors */


){
  int i, j;              /* Loop counters */
  Table *pTab;           /* The table to be updated */
  int addrTop = 0;       /* VDBE instruction address of the start of the loop */
  WhereInfo *pWInfo;     /* Information about the WHERE clause */
  Vdbe *v;               /* The virtual database engine */
  Index *pIdx;           /* For looping over indices */
................................................................................
# define isView 0
# define tmask 0
#endif
#ifdef SQLITE_OMIT_VIEW
# undef isView
# define isView 0
#endif











  if( sqlite3ViewGetColumnNames(pParse, pTab) ){
    goto update_cleanup;
  }
  if( sqlite3IsReadOnly(pParse, pTab, tmask) ){
    goto update_cleanup;
  }
................................................................................
  }

  /* If we are trying to update a view, realize that view into
  ** an ephemeral table.
  */
#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
  if( isView ){
    sqlite3MaterializeView(pParse, pTab, pWhere, iDataCur);




  }
#endif

  /* Resolve the column names in all the expressions in the
  ** WHERE clause.
  */
  if( sqlite3ResolveExprNames(&sNC, pWhere) ){
................................................................................

update_cleanup:
  sqlite3AuthContextPop(&sContext);
  sqlite3DbFree(db, aXRef); /* Also frees aRegIdx[] and aToOpen[] */
  sqlite3SrcListDelete(db, pTabList);
  sqlite3ExprListDelete(db, pChanges);
  sqlite3ExprDelete(db, pWhere);




  return;
}
/* Make sure "isView" and other macros defined above are undefined. Otherwise
** they may interfere with compilation of other functions in this file
** (or in another file, if this file becomes part of the amalgamation).  */
#ifdef isView
 #undef isView
................................................................................
  int regRec;                     /* Register in which to assemble record */
  int regRowid;                   /* Register for ephem table rowid */
  int iCsr = pSrc->a[0].iCursor;  /* Cursor used for virtual table scan */
  int aDummy[2];                  /* Unused arg for sqlite3WhereOkOnePass() */
  int bOnePass;                   /* True to use onepass strategy */
  int addr;                       /* Address of OP_OpenEphemeral */

  /* Allocate nArg registers to martial the arguments to VUpdate. Then
  ** create and open the ephemeral table in which the records created from
  ** these arguments will be temporarily stored. */
  assert( v );
  ephemTab = pParse->nTab++;
  addr= sqlite3VdbeAddOp2(v, OP_OpenEphemeral, ephemTab, nArg);
  regArg = pParse->nMem + 1;
  pParse->nMem += nArg;
................................................................................
  if( pWInfo==0 ) return;

  /* Populate the argument registers. */
  for(i=0; i<pTab->nCol; i++){
    if( aXRef[i]>=0 ){
      sqlite3ExprCode(pParse, pChanges->a[aXRef[i]].pExpr, regArg+2+i);
    }else{
      sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, i, regArg+2+i);
    }
  }
  if( HasRowid(pTab) ){
    sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg);
    if( pRowid ){
      sqlite3ExprCode(pParse, pRowid, regArg+1);
    }else{
................................................................................
  WhereLevel *pLevel,             /* Scan to write OP_Explain opcode for */
  int iLevel,                     /* Value for "level" column of output */
  int iFrom,                      /* Value for "from" column of output */
  u16 wctrlFlags                  /* Flags passed to sqlite3WhereBegin() */
){
  int ret = 0;
#if !defined(SQLITE_DEBUG) && !defined(SQLITE_ENABLE_STMT_SCANSTATUS)
  if( pParse->explain==2 )
#endif
  {
    struct SrcList_item *pItem = &pTabList->a[pLevel->iFrom];
    Vdbe *v = pParse->pVdbe;      /* VM being constructed */
    sqlite3 *db = pParse->db;     /* Database handle */
    int iId = pParse->iSelectId;  /* Select id (left-most output column) */
    int isSearch;                 /* True for a SEARCH. False for SCAN. */
................................................................................
** term was originally TERM_LIKE, then the parent gets TERM_LIKECOND instead.
** The TERM_LIKECOND marking indicates that the term should be coded inside
** a conditional such that is only evaluated on the second pass of a
** LIKE-optimization loop, when scanning BLOBs instead of strings.
*/
static void disableTerm(WhereLevel *pLevel, WhereTerm *pTerm){
  int nLoop = 0;
  while( ALWAYS(pTerm!=0)
      && (pTerm->wtFlags & TERM_CODED)==0
      && (pLevel->iLeftJoin==0 || ExprHasProperty(pTerm->pExpr, EP_FromJoin))
      && (pLevel->notReady & pTerm->prereqAll)==0
  ){
    if( nLoop && (pTerm->wtFlags & TERM_LIKE)!=0 ){
      pTerm->wtFlags |= TERM_LIKECOND;
    }else{
      pTerm->wtFlags |= TERM_CODED;
    }
    if( pTerm->iParent<0 ) break;
    pTerm = &pTerm->pWC->a[pTerm->iParent];

    pTerm->nChild--;
    if( pTerm->nChild!=0 ) break;
    nLoop++;
  }
}

/*
................................................................................
    if( sqlite3CompareAffinity(p, zAff[i])==SQLITE_AFF_BLOB
     || sqlite3ExprNeedsNoAffinityChange(p, zAff[i])
    ){
      zAff[i] = SQLITE_AFF_BLOB;
    }
  }
}

































































































/*
** Generate code for a single equality term of the WHERE clause.  An equality
** term can be either X=expr or X IN (...).   pTerm is the term to be 
** coded.
**
** The current value for the constraint is left in a register, the index
................................................................................
    for(i=0; i<iEq; i++){
      if( pLoop->aLTerm[i] && pLoop->aLTerm[i]->pExpr==pX ){
        disableTerm(pLevel, pTerm);
        return iTarget;
      }
    }
    for(i=iEq;i<pLoop->nLTerm; i++){

      if( ALWAYS(pLoop->aLTerm[i]) && pLoop->aLTerm[i]->pExpr==pX ) nEq++;
    }

    if( (pX->flags & EP_xIsSelect)==0 || pX->x.pSelect->pEList->nExpr==1 ){
      eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, 0);
    }else{
      Select *pSelect = pX->x.pSelect;
      sqlite3 *db = pParse->db;
      u16 savedDbOptFlags = db->dbOptFlags;
      ExprList *pOrigRhs = pSelect->pEList;
      ExprList *pOrigLhs = pX->pLeft->x.pList;
      ExprList *pRhs = 0;         /* New Select.pEList for RHS */
      ExprList *pLhs = 0;         /* New pX->pLeft vector */


      for(i=iEq;i<pLoop->nLTerm; i++){
        if( pLoop->aLTerm[i]->pExpr==pX ){
          int iField = pLoop->aLTerm[i]->iField - 1;
          Expr *pNewRhs = sqlite3ExprDup(db, pOrigRhs->a[iField].pExpr, 0);
          Expr *pNewLhs = sqlite3ExprDup(db, pOrigLhs->a[iField].pExpr, 0);

          pRhs = sqlite3ExprListAppend(pParse, pRhs, pNewRhs);
          pLhs = sqlite3ExprListAppend(pParse, pLhs, pNewLhs);
        }
      }
      if( !db->mallocFailed ){
        Expr *pLeft = pX->pLeft;

        if( pSelect->pOrderBy ){
          /* If the SELECT statement has an ORDER BY clause, zero the 
          ** iOrderByCol variables. These are set to non-zero when an 
          ** ORDER BY term exactly matches one of the terms of the 
          ** result-set. Since the result-set of the SELECT statement may
          ** have been modified or reordered, these variables are no longer 
          ** set correctly.  Since setting them is just an optimization, 
          ** it's easiest just to zero them here.  */
          ExprList *pOrderBy = pSelect->pOrderBy;
          for(i=0; i<pOrderBy->nExpr; i++){
            pOrderBy->a[i].u.x.iOrderByCol = 0;
          }
        }

        /* Take care here not to generate a TK_VECTOR containing only a
        ** single value. Since the parser never creates such a vector, some
        ** of the subroutines do not handle this case.  */
        if( pLhs->nExpr==1 ){
          pX->pLeft = pLhs->a[0].pExpr;
        }else{
          pLeft->x.pList = pLhs;
          aiMap = (int*)sqlite3DbMallocZero(pParse->db, sizeof(int) * nEq);
          testcase( aiMap==0 );
        }
        pSelect->pEList = pRhs;
        db->dbOptFlags |= SQLITE_QueryFlattener;
        eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, aiMap);
        db->dbOptFlags = savedDbOptFlags;
        testcase( aiMap!=0 && aiMap[0]!=0 );
        pSelect->pEList = pOrigRhs;
        pLeft->x.pList = pOrigLhs;
        pX->pLeft = pLeft;

      }
      sqlite3ExprListDelete(pParse->db, pLhs);
      sqlite3ExprListDelete(pParse->db, pRhs);


    }

    if( eType==IN_INDEX_INDEX_DESC ){
      testcase( bRev );
      bRev = !bRev;
    }
    iTab = pX->iTable;
................................................................................
      if( sqlite3ExprIsVector(pRight)==0 ){
        disableTerm(pLevel, pRangeEnd);
      }else{
        endEq = 1;
      }
    }else if( bStopAtNull ){
      sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq);

      endEq = 0;
      nConstraint++;
    }
    sqlite3DbFree(db, zStartAff);
    sqlite3DbFree(db, zEndAff);

    /* Top of the loop body */
................................................................................
  Bitmask extraRight = 0;          /* Extra dependencies on LEFT JOIN */
  Expr *pStr1 = 0;                 /* RHS of LIKE/GLOB operator */
  int isComplete = 0;              /* RHS of LIKE/GLOB ends with wildcard */
  int noCase = 0;                  /* uppercase equivalent to lowercase */
  int op;                          /* Top-level operator.  pExpr->op */
  Parse *pParse = pWInfo->pParse;  /* Parsing context */
  sqlite3 *db = pParse->db;        /* Database connection */
  unsigned char eOp2;              /* op2 value for LIKE/REGEXP/GLOB */
  int nLeft;                       /* Number of elements on left side vector */

  if( db->mallocFailed ){
    return;
  }
  pTerm = &pWC->a[idxTerm];
  pMaskSet = &pWInfo->sMaskSet;
................................................................................
  ** not normally optimized for ordinary tables.  In other words, OP
  ** is one of MATCH, LIKE, GLOB, REGEXP, !=, IS, IS NOT, or NOT NULL.
  ** This information is used by the xBestIndex methods of
  ** virtual tables.  The native query optimizer does not attempt
  ** to do anything with MATCH functions.
  */
  if( pWC->op==TK_AND ){
    Expr *pRight, *pLeft;
    int res = isAuxiliaryVtabOperator(pExpr, &eOp2, &pLeft, &pRight);
    while( res-- > 0 ){
      int idxNew;
      WhereTerm *pNewTerm;
      Bitmask prereqColumn, prereqExpr;

      prereqExpr = sqlite3WhereExprUsage(pMaskSet, pRight);
................................................................................
** generating the code that loops through a table looking for applicable
** rows.  Indices are selected and used to speed the search when doing
** so is applicable.  Because this module is responsible for selecting
** indices, you might also think of this module as the "query optimizer".
*/
/* #include "sqliteInt.h" */
/* #include "whereInt.h" */
















/* Forward declaration of methods */
static int whereLoopResize(sqlite3*, WhereLoop*, int);

/* Test variable that can be set to enable WHERE tracing */
#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG)
/***/ int sqlite3WhereTrace = 0;
................................................................................
#ifndef SQLITE_OMIT_VIRTUALTABLE
/*
** Allocate and populate an sqlite3_index_info structure. It is the 
** responsibility of the caller to eventually release the structure
** by passing the pointer returned by this function to sqlite3_free().
*/
static sqlite3_index_info *allocateIndexInfo(
  Parse *pParse,
  WhereClause *pWC,
  Bitmask mUnusable,              /* Ignore terms with these prereqs */
  struct SrcList_item *pSrc,
  ExprList *pOrderBy,
  u16 *pmNoOmit                   /* Mask of terms not to omit */
){
  int i, j;
  int nTerm;
  struct sqlite3_index_constraint *pIdxCons;
  struct sqlite3_index_orderby *pIdxOrderBy;
  struct sqlite3_index_constraint_usage *pUsage;

  WhereTerm *pTerm;
  int nOrderBy;
  sqlite3_index_info *pIdxInfo;
  u16 mNoOmit = 0;

  /* Count the number of possible WHERE clause constraints referring
  ** to this virtual table */
................................................................................
    }
  }

  /* Allocate the sqlite3_index_info structure
  */
  pIdxInfo = sqlite3DbMallocZero(pParse->db, sizeof(*pIdxInfo)
                           + (sizeof(*pIdxCons) + sizeof(*pUsage))*nTerm
                           + sizeof(*pIdxOrderBy)*nOrderBy );
  if( pIdxInfo==0 ){
    sqlite3ErrorMsg(pParse, "out of memory");
    return 0;
  }

  /* Initialize the structure.  The sqlite3_index_info structure contains
  ** many fields that are declared "const" to prevent xBestIndex from
  ** changing them.  We have to do some funky casting in order to
  ** initialize those fields.
  */

  pIdxCons = (struct sqlite3_index_constraint*)&pIdxInfo[1];
  pIdxOrderBy = (struct sqlite3_index_orderby*)&pIdxCons[nTerm];
  pUsage = (struct sqlite3_index_constraint_usage*)&pIdxOrderBy[nOrderBy];
  *(int*)&pIdxInfo->nConstraint = nTerm;
  *(int*)&pIdxInfo->nOrderBy = nOrderBy;
  *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint = pIdxCons;
  *(struct sqlite3_index_orderby**)&pIdxInfo->aOrderBy = pIdxOrderBy;
  *(struct sqlite3_index_constraint_usage**)&pIdxInfo->aConstraintUsage =
                                                                   pUsage;



  for(i=j=0, pTerm=pWC->a; i<pWC->nTerm; i++, pTerm++){
    u16 op;
    if( pTerm->leftCursor != pSrc->iCursor ) continue;
    if( pTerm->prereqRight & mUnusable ) continue;
    assert( IsPowerOfTwo(pTerm->eOperator & ~WO_EQUIV) );
    testcase( pTerm->eOperator & WO_IN );
    testcase( pTerm->eOperator & WO_IS );
................................................................................
  sqlite3DbFreeNN(db, p);
}

/*
** Free a WhereInfo structure
*/
static void whereInfoFree(sqlite3 *db, WhereInfo *pWInfo){
  if( ALWAYS(pWInfo) ){
    int i;

    for(i=0; i<pWInfo->nLevel; i++){
      WhereLevel *pLevel = &pWInfo->a[i];
      if( pLevel->pWLoop && (pLevel->pWLoop->wsFlags & WHERE_IN_ABLE) ){
        sqlite3DbFree(db, pLevel->u.in.aInLoop);
      }
    }
    sqlite3WhereClauseClear(&pWInfo->sWC);
    while( pWInfo->pLoops ){
      WhereLoop *p = pWInfo->pLoops;
      pWInfo->pLoops = p->pNextLoop;
      whereLoopDelete(db, p);
    }
    sqlite3DbFreeNN(db, pWInfo);
  }
}

/*
** Return TRUE if all of the following are true:
**
**   (1)  X has the same or lower cost that Y
**   (2)  X uses fewer WHERE clause terms than Y
................................................................................
                          ** changes "x IN (?)" into "x=?". */
      }
    }else if( eOp & (WO_EQ|WO_IS) ){
      int iCol = pProbe->aiColumn[saved_nEq];
      pNew->wsFlags |= WHERE_COLUMN_EQ;
      assert( saved_nEq==pNew->u.btree.nEq );
      if( iCol==XN_ROWID 
       || (iCol>0 && nInMul==0 && saved_nEq==pProbe->nKeyCol-1)
      ){
        if( iCol>=0 && pProbe->uniqNotNull==0 ){
          pNew->wsFlags |= WHERE_UNQ_WANTED;
        }else{
          pNew->wsFlags |= WHERE_ONEROW;
        }
      }
................................................................................
        pNew->prereq = mPrereq | pTerm->prereqRight;
        rc = whereLoopInsert(pBuilder, pNew);
      }
    }
  }
#endif /* SQLITE_OMIT_AUTOMATIC_INDEX */

  /* Loop over all indices
  */
  for(; rc==SQLITE_OK && pProbe; pProbe=pProbe->pNext, iSortIdx++){


    if( pProbe->pPartIdxWhere!=0
     && !whereUsablePartialIndex(pSrc->iCursor, pWC, pProbe->pPartIdxWhere) ){
      testcase( pNew->iTab!=pSrc->iCursor );  /* See ticket [98d973b8f5] */
      continue;  /* Partial index inappropriate for this query */
    }

    rSize = pProbe->aiRowLogEst[0];
    pNew->u.btree.nEq = 0;
    pNew->u.btree.nBtm = 0;
    pNew->u.btree.nTop = 0;
    pNew->nSkip = 0;
    pNew->nLTerm = 0;
    pNew->iSortIdx = 0;
................................................................................
      pTab->tabFlags |= TF_StatsUsed;
    }
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    sqlite3Stat4ProbeFree(pBuilder->pRec);
    pBuilder->nRecValid = 0;
    pBuilder->pRec = 0;
#endif

    /* If there was an INDEXED BY clause, then only that one index is
    ** considered. */
    if( pSrc->pIBIndex ) break;
  }
  return rc;
}

#ifndef SQLITE_OMIT_VIRTUALTABLE

/*
................................................................................
  WHERETRACE(0xffff, ("  bIn=%d prereqIn=%04llx prereqOut=%04llx\n",
                      *pbIn, (sqlite3_uint64)mPrereq,
                      (sqlite3_uint64)(pNew->prereq & ~mPrereq)));

  return rc;
}























/*
** Add all WhereLoop objects for a table of the join identified by
** pBuilder->pNew->iTab.  That table is guaranteed to be a virtual table.
**
** If there are no LEFT or CROSS JOIN joins in the query, both mPrereq and
** mUnusable are set to 0. Otherwise, mPrereq is a mask of all FROM clause
................................................................................
    }
    sqlite3DebugPrintf("\n");
    for(ii=0; ii<pWInfo->nLevel; ii++){
      whereLoopPrint(pWInfo->a[ii].pWLoop, sWLB.pWC);
    }
  }
#endif

  /* Attempt to omit tables from the join that do not effect the result */





























  if( pWInfo->nLevel>=2
   && pResultSet!=0
   && OptimizationEnabled(db, SQLITE_OmitNoopJoin)
  ){

    Bitmask tabUsed = sqlite3WhereExprListUsage(pMaskSet, pResultSet);
    if( sWLB.pOrderBy ){
      tabUsed |= sqlite3WhereExprListUsage(pMaskSet, sWLB.pOrderBy);
    }
    while( pWInfo->nLevel>=2 ){
      WhereTerm *pTerm, *pEnd;

      pLoop = pWInfo->a[pWInfo->nLevel-1].pWLoop;
      if( (pWInfo->pTabList->a[pLoop->iTab].fg.jointype & JT_LEFT)==0 ) break;

      if( (wctrlFlags & WHERE_WANT_DISTINCT)==0
       && (pLoop->wsFlags & WHERE_ONEROW)==0
      ){
        break;
      }
      if( (tabUsed & pLoop->maskSelf)!=0 ) break;
      pEnd = sWLB.pWC->a + sWLB.pWC->nTerm;
      for(pTerm=sWLB.pWC->a; pTerm<pEnd; pTerm++){
        if( (pTerm->prereqAll & pLoop->maskSelf)!=0
         && !ExprHasProperty(pTerm->pExpr, EP_FromJoin)

        ){
          break;
        }
      }

      if( pTerm<pEnd ) break;
      WHERETRACE(0xffff, ("-> drop loop %c not used\n", pLoop->cId));










      pWInfo->nLevel--;
      nTabList--;
    }
  }
  WHERETRACE(0xffff,("*** Optimizer Finished ***\n"));
  pWInfo->pParse->nQueryLoop += pWInfo->nRowOut;

................................................................................
  pWInfo->iTop = sqlite3VdbeCurrentAddr(v);
  if( db->mallocFailed ) goto whereBeginError;

  /* Generate the code to do the search.  Each iteration of the for
  ** loop below generates code for a single nested loop of the VM
  ** program.
  */
  notReady = ~(Bitmask)0;
  for(ii=0; ii<nTabList; ii++){
    int addrExplain;
    int wsFlags;
    pLevel = &pWInfo->a[ii];
    wsFlags = pLevel->pWLoop->wsFlags;
#ifndef SQLITE_OMIT_AUTOMATIC_INDEX
    if( (pLevel->pWLoop->wsFlags & WHERE_AUTO_INDEX)!=0 ){
................................................................................
    pLoop = pLevel->pWLoop;
    if( pLevel->op!=OP_Noop ){
#ifndef SQLITE_DISABLE_SKIPAHEAD_DISTINCT
      int addrSeek = 0;
      Index *pIdx;
      int n;
      if( pWInfo->eDistinct==WHERE_DISTINCT_ORDERED

       && (pLoop->wsFlags & WHERE_INDEXED)!=0
       && (pIdx = pLoop->u.btree.pIndex)->hasStat1
       && (n = pLoop->u.btree.nIdxCol)>0
       && pIdx->aiRowLogEst[n]>=36
      ){
        int r1 = pParse->nMem+1;
        int j, op;
................................................................................
    }
#endif
    if( pLevel->iLeftJoin ){
      int ws = pLoop->wsFlags;
      addr = sqlite3VdbeAddOp1(v, OP_IfPos, pLevel->iLeftJoin); VdbeCoverage(v);
      assert( (ws & WHERE_IDX_ONLY)==0 || (ws & WHERE_INDEXED)!=0 );
      if( (ws & WHERE_IDX_ONLY)==0 ){

        sqlite3VdbeAddOp1(v, OP_NullRow, pTabList->a[i].iCursor);
      }
      if( (ws & WHERE_INDEXED) 
       || ((ws & WHERE_MULTI_OR) && pLevel->u.pCovidx) 
      ){
        sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iIdxCur);
      }
      if( pLevel->op==OP_Return ){
................................................................................
     && !db->mallocFailed
    ){
      last = sqlite3VdbeCurrentAddr(v);
      k = pLevel->addrBody;
      pOp = sqlite3VdbeGetOp(v, k);
      for(; k<last; k++, pOp++){
        if( pOp->p1!=pLevel->iTabCur ) continue;
        if( pOp->opcode==OP_Column ){




          int x = pOp->p2;
          assert( pIdx->pTable==pTab );
          if( !HasRowid(pTab) ){
            Index *pPk = sqlite3PrimaryKeyIndex(pTab);
            x = pPk->aiColumn[x];
            assert( x>=0 );
          }
................................................................................

/*
** Alternative datatype for the argument to the malloc() routine passed
** into sqlite3ParserAlloc().  The default is size_t.
*/
#define YYMALLOCARGTYPE  u64

/*
** An instance of this structure holds information about the
** LIMIT clause of a SELECT statement.
*/
struct LimitVal {
  Expr *pLimit;    /* The LIMIT expression.  NULL if there is no limit */
  Expr *pOffset;   /* The OFFSET expression.  NULL if there is none */
};

/*
** An instance of the following structure describes the event of a
** TRIGGER.  "a" is the event type, one of TK_UPDATE, TK_INSERT,
** TK_DELETE, or TK_INSTEAD.  If the event is of the form
**
**      UPDATE ON (a,b,c)
**
................................................................................
        cnt>mxSelect
      ){
        sqlite3ErrorMsg(pParse, "too many terms in compound SELECT");
      }
    }
  }

  /* This is a utility routine used to set the ExprSpan.zStart and
  ** ExprSpan.zEnd values of pOut so that the span covers the complete
  ** range of text beginning with pStart and going to the end of pEnd.
  */
  static void spanSet(ExprSpan *pOut, Token *pStart, Token *pEnd){
    pOut->zStart = pStart->z;
    pOut->zEnd = &pEnd->z[pEnd->n];
  }

  /* Construct a new Expr object from a single identifier.  Use the
  ** new Expr to populate pOut.  Set the span of pOut to be the identifier
  ** that created the expression.
  */
  static void spanExpr(ExprSpan *pOut, Parse *pParse, int op, Token t){
    Expr *p = sqlite3DbMallocRawNN(pParse->db, sizeof(Expr)+t.n+1);
    if( p ){
      memset(p, 0, sizeof(Expr));
      p->op = (u8)op;
      p->flags = EP_Leaf;
      p->iAgg = -1;
      p->u.zToken = (char*)&p[1];
................................................................................
        if( p->u.zToken[0]=='"' ) p->flags |= EP_DblQuoted;
        sqlite3Dequote(p->u.zToken);
      }
#if SQLITE_MAX_EXPR_DEPTH>0
      p->nHeight = 1;
#endif  
    }
    pOut->pExpr = p;
    pOut->zStart = t.z;
    pOut->zEnd = &t.z[t.n];
  }

  /* This routine constructs a binary expression node out of two ExprSpan
  ** objects and uses the result to populate a new ExprSpan object.
  */
  static void spanBinaryExpr(
    Parse *pParse,      /* The parsing context.  Errors accumulate here */
    int op,             /* The binary operation */
    ExprSpan *pLeft,    /* The left operand, and output */
    ExprSpan *pRight    /* The right operand */
  ){
    pLeft->pExpr = sqlite3PExpr(pParse, op, pLeft->pExpr, pRight->pExpr);
    pLeft->zEnd = pRight->zEnd;
  }

  /* If doNot is true, then add a TK_NOT Expr-node wrapper around the
  ** outside of *ppExpr.
  */
  static void exprNot(Parse *pParse, int doNot, ExprSpan *pSpan){
    if( doNot ){
      pSpan->pExpr = sqlite3PExpr(pParse, TK_NOT, pSpan->pExpr, 0);
    }
  }

  /* Construct an expression node for a unary postfix operator
  */
  static void spanUnaryPostfix(
    Parse *pParse,         /* Parsing context to record errors */
    int op,                /* The operator */
    ExprSpan *pOperand,    /* The operand, and output */
    Token *pPostOp         /* The operand token for setting the span */
  ){
    pOperand->pExpr = sqlite3PExpr(pParse, op, pOperand->pExpr, 0);
    pOperand->zEnd = &pPostOp->z[pPostOp->n];
  }                           

  /* A routine to convert a binary TK_IS or TK_ISNOT expression into a
  ** unary TK_ISNULL or TK_NOTNULL expression. */
  static void binaryToUnaryIfNull(Parse *pParse, Expr *pY, Expr *pA, int op){
    sqlite3 *db = pParse->db;
    if( pA && pY && pY->op==TK_NULL ){
      pA->op = (u8)op;
      sqlite3ExprDelete(db, pA->pRight);
      pA->pRight = 0;
    }
  }

  /* Construct an expression node for a unary prefix operator
  */
  static void spanUnaryPrefix(
    ExprSpan *pOut,        /* Write the new expression node here */
    Parse *pParse,         /* Parsing context to record errors */
    int op,                /* The operator */
    ExprSpan *pOperand,    /* The operand */
    Token *pPreOp         /* The operand token for setting the span */
  ){
    pOut->zStart = pPreOp->z;
    pOut->pExpr = sqlite3PExpr(pParse, op, pOperand->pExpr, 0);
    pOut->zEnd = pOperand->zEnd;
  }

  /* Add a single new term to an ExprList that is used to store a
  ** list of identifiers.  Report an error if the ID list contains
  ** a COLLATE clause or an ASC or DESC keyword, except ignore the
  ** error while parsing a legacy schema.
  */
  static ExprList *parserAddExprIdListTerm(
    Parse *pParse,
................................................................................
**    sqlite3ParserARG_PDECL     A parameter declaration for the %extra_argument
**    sqlite3ParserARG_STORE     Code to store %extra_argument into yypParser
**    sqlite3ParserARG_FETCH     Code to extract %extra_argument from yypParser
**    YYERRORSYMBOL      is the code number of the error symbol.  If not
**                       defined, then do no error processing.
**    YYNSTATE           the combined number of states.
**    YYNRULE            the number of rules in the grammar

**    YY_MAX_SHIFT       Maximum value for shift actions
**    YY_MIN_SHIFTREDUCE Minimum value for shift-reduce actions
**    YY_MAX_SHIFTREDUCE Maximum value for shift-reduce actions
**    YY_MIN_REDUCE      Minimum value for reduce actions
**    YY_MAX_REDUCE      Maximum value for reduce actions
**    YY_ERROR_ACTION    The yy_action[] code for syntax error
**    YY_ACCEPT_ACTION   The yy_action[] code for accept
**    YY_NO_ACTION       The yy_action[] code for no-op


*/
#ifndef INTERFACE
# define INTERFACE 1
#endif
/************* Begin control #defines *****************************************/
#define YYCODETYPE unsigned char
#define YYNOCODE 252
#define YYACTIONTYPE unsigned short int
#define YYWILDCARD 83
#define sqlite3ParserTOKENTYPE Token
typedef union {
  int yyinit;
  sqlite3ParserTOKENTYPE yy0;
  Expr* yy72;
  TriggerStep* yy145;
  ExprList* yy148;
  SrcList* yy185;
  ExprSpan yy190;
  int yy194;
  Select* yy243;
  IdList* yy254;
  With* yy285;
  struct TrigEvent yy332;
  struct LimitVal yy354;
  struct {int value; int mask;} yy497;
} YYMINORTYPE;
#ifndef YYSTACKDEPTH
#define YYSTACKDEPTH 100
#endif
#define sqlite3ParserARG_SDECL Parse *pParse;
#define sqlite3ParserARG_PDECL ,Parse *pParse
#define sqlite3ParserARG_FETCH Parse *pParse = yypParser->pParse
#define sqlite3ParserARG_STORE yypParser->pParse = pParse
#define YYFALLBACK 1
#define YYNSTATE             455
#define YYNRULE              329

#define YY_MAX_SHIFT         454
#define YY_MIN_SHIFTREDUCE   664
#define YY_MAX_SHIFTREDUCE   992
#define YY_MIN_REDUCE        993
#define YY_MAX_REDUCE        1321
#define YY_ERROR_ACTION      1322
#define YY_ACCEPT_ACTION     1323
#define YY_NO_ACTION         1324


/************* End control #defines *******************************************/

/* Define the yytestcase() macro to be a no-op if is not already defined
** otherwise.
**
** Applications can choose to define yytestcase() in the %include section
** to a macro that can assist in verifying code coverage.  For production
................................................................................
**
**   0 <= N <= YY_MAX_SHIFT             Shift N.  That is, push the lookahead
**                                      token onto the stack and goto state N.
**
**   N between YY_MIN_SHIFTREDUCE       Shift to an arbitrary state then
**     and YY_MAX_SHIFTREDUCE           reduce by rule N-YY_MIN_SHIFTREDUCE.
**
**   N between YY_MIN_REDUCE            Reduce by rule N-YY_MIN_REDUCE
**     and YY_MAX_REDUCE
**
**   N == YY_ERROR_ACTION               A syntax error has occurred.
**
**   N == YY_ACCEPT_ACTION              The parser accepts its input.
**
**   N == YY_NO_ACTION                  No such action.  Denotes unused
**                                      slots in the yy_action[] table.



**
** The action table is constructed as a single large table named yy_action[].
** Given state S and lookahead X, the action is computed as either:
**
**    (A)   N = yy_action[ yy_shift_ofst[S] + X ]
**    (B)   N = yy_default[S]
**
** The (A) formula is preferred.  The B formula is used instead if:
**    (1)  The yy_shift_ofst[S]+X value is out of range, or
**    (2)  yy_lookahead[yy_shift_ofst[S]+X] is not equal to X, or
**    (3)  yy_shift_ofst[S] equal YY_SHIFT_USE_DFLT.
** (Implementation note: YY_SHIFT_USE_DFLT is chosen so that
** YY_SHIFT_USE_DFLT+X will be out of range for all possible lookaheads X.
** Hence only tests (1) and (2) need to be evaluated.)
**
** The formulas above are for computing the action when the lookahead is
** a terminal symbol.  If the lookahead is a non-terminal (as occurs after
** a reduce action) then the yy_reduce_ofst[] array is used in place of
** the yy_shift_ofst[] array and YY_REDUCE_USE_DFLT is used in place of
** YY_SHIFT_USE_DFLT.
**
** The following are the tables generated in this section:
**
**  yy_action[]        A single table containing all actions.
**  yy_lookahead[]     A table containing the lookahead for each entry in
**                     yy_action.  Used to detect hash collisions.
**  yy_shift_ofst[]    For each state, the offset into yy_action for
**                     shifting terminals.
**  yy_reduce_ofst[]   For each state, the offset into yy_action for
**                     shifting non-terminals after a reduce.
**  yy_default[]       Default action for each state.
**
*********** Begin parsing tables **********************************************/
#define YY_ACTTAB_COUNT (1566)
static const YYACTIONTYPE yy_action[] = {
 /*     0 */   324, 1323,  155,  155,    2,  203,   94,   94,   94,   93,
 /*    10 */   350,   98,   98,   98,   98,   91,   95,   95,   94,   94,
 /*    20 */    94,   93,  350,  268,   99,  100,   90,  971,  971,  847,
 /*    30 */   850,  839,  839,   97,   97,   98,   98,   98,   98,  350,
 /*    40 */   969,   96,   96,   96,   96,   95,   95,   94,   94,   94,
 /*    50 */    93,  350,  950,   96,   96,   96,   96,   95,   95,   94,
 /*    60 */    94,   94,   93,  350,  250,   96,   96,   96,   96,   95,
 /*    70 */    95,   94,   94,   94,   93,  350,  224,  224,  969,  132,
 /*    80 */   888,  348,  347,  415,  172,  324, 1286,  449,  414,  950,
 /*    90 */   951,  952,  808,  977, 1032,  950,  300,  786,  428,  132,
 /*   100 */   975,  362,  976,    9,    9,  787,  132,   52,   52,   99,
 /*   110 */   100,   90,  971,  971,  847,  850,  839,  839,   97,   97,
 /*   120 */    98,   98,   98,   98,  372,  978,  241,  978,  262,  369,
 /*   130 */   261,  120,  950,  951,  952,  194,   58,  324,  401,  398,
 /*   140 */   397,  808,  427,  429,   75,  808, 1260, 1260,  132,  396,
 /*   150 */    96,   96,   96,   96,   95,   95,   94,   94,   94,   93,
 /*   160 */   350,   99,  100,   90,  971,  971,  847,  850,  839,  839,
 /*   170 */    97,   97,   98,   98,   98,   98,  786,  262,  369,  261,
 /*   180 */   826,  262,  364,  251,  787, 1084,  101, 1114,   72,  324,
 /*   190 */   227, 1113,  242,  411,  442,  819,   92,   89,  178,  818,
 /*   200 */  1022,  268,   96,   96,   96,   96,   95,   95,   94,   94,
 /*   210 */    94,   93,  350,   99,  100,   90,  971,  971,  847,  850,
 /*   220 */   839,  839,   97,   97,   98,   98,   98,   98,  449,  372,
 /*   230 */   818,  818,  820,   92,   89,  178,   60,   92,   89,  178,
 /*   240 */  1025,  324,  357,  930, 1316,  300,   61, 1316,   52,   52,
 /*   250 */   836,  836,  848,  851,   96,   96,   96,   96,   95,   95,
 /*   260 */    94,   94,   94,   93,  350,   99,  100,   90,  971,  971,
 /*   270 */   847,  850,  839,  839,   97,   97,   98,   98,   98,   98,
 /*   280 */    92,   89,  178,  427,  412,  198,  930, 1317,  454,  995,
 /*   290 */  1317,  355, 1024,  324,  243,  231,  114,  277,  348,  347,
 /*   300 */  1242,  950,  416, 1071,  928,  840,   96,   96,   96,   96,
 /*   310 */    95,   95,   94,   94,   94,   93,  350,   99,  100,   90,
 /*   320 */   971,  971,  847,  850,  839,  839,   97,   97,   98,   98,
 /*   330 */    98,   98,  449,  328,  449,  120,   23,  256,  950,  951,
 /*   340 */   952,  968,  978,  438,  978,  324,  329,  928,  954,  701,
 /*   350 */   200,  175,   52,   52,   52,   52,  939,  353,   96,   96,
 /*   360 */    96,   96,   95,   95,   94,   94,   94,   93,  350,   99,
 /*   370 */   100,   90,  971,  971,  847,  850,  839,  839,   97,   97,
 /*   380 */    98,   98,   98,   98,  354,  449,  954,  427,  417,  427,
 /*   390 */   426, 1290,   92,   89,  178,  268,  253,  324,  255, 1058,
 /*   400 */  1037,  694,   93,  350,  383,   52,   52,  380, 1058,  374,
 /*   410 */    96,   96,   96,   96,   95,   95,   94,   94,   94,   93,
 /*   420 */   350,   99,  100,   90,  971,  971,  847,  850,  839,  839,
 /*   430 */    97,   97,   98,   98,   98,   98,  228,  449,  167,  449,
 /*   440 */   427,  407,  157,  446,  446,  446,  349,  349,  349,  324,
 /*   450 */   310,  316,  991,  827,  320,  242,  411,   51,   51,   36,
 /*   460 */    36,  254,   96,   96,   96,   96,   95,   95,   94,   94,
 /*   470 */    94,   93,  350,   99,  100,   90,  971,  971,  847,  850,
 /*   480 */   839,  839,   97,   97,   98,   98,   98,   98,  194,  316,
 /*   490 */   929,  401,  398,  397,  224,  224, 1265,  939,  353, 1318,
 /*   500 */   317,  324,  396, 1063, 1063,  813,  414, 1061, 1061,  950,
 /*   510 */   299,  448,  992,  268,   96,   96,   96,   96,   95,   95,
 /*   520 */    94,   94,   94,   93,  350,   99,  100,   90,  971,  971,
 /*   530 */   847,  850,  839,  839,   97,   97,   98,   98,   98,   98,
 /*   540 */   757, 1041,  449,  893,  893,  386,  950,  951,  952,  410,
 /*   550 */   992,  747,  747,  324,  229,  268,  221,  296,  268,  771,
 /*   560 */   890,  378,   52,   52,  890,  421,   96,   96,   96,   96,
 /*   570 */    95,   95,   94,   94,   94,   93,  350,   99,  100,   90,
 /*   580 */   971,  971,  847,  850,  839,  839,   97,   97,   98,   98,
 /*   590 */    98,   98,  103,  449,  275,  384, 1241,  343,  157, 1207,
 /*   600 */   909,  669,  670,  671,  176,  197,  196,  195,  324,  298,
 /*   610 */   319, 1266,    2,   37,   37,  910, 1134, 1040,   96,   96,
 /*   620 */    96,   96,   95,   95,   94,   94,   94,   93,  350,  697,
 /*   630 */   911,  177,   99,  100,   90,  971,  971,  847,  850,  839,
 /*   640 */   839,   97,   97,   98,   98,   98,   98,  230,  146,  120,
 /*   650 */   735, 1235,  826,  270, 1141,  273, 1141,  771,  171,  170,
 /*   660 */   736, 1141,   82,  324,   80,  268,  697,  819,  158,  268,
 /*   670 */   378,  818,   78,   96,   96,   96,   96,   95,   95,   94,
 /*   680 */    94,   94,   93,  350,  120,  950,  393,   99,  100,   90,
 /*   690 */   971,  971,  847,  850,  839,  839,   97,   97,   98,   98,
 /*   700 */    98,   98,  818,  818,  820, 1141, 1070,  370,  331,  133,
 /*   710 */  1066, 1141, 1250,  198,  268,  324, 1016,  330,  245,  333,
 /*   720 */    24,  334,  950,  951,  952,  368,  335,   81,   96,   96,
 /*   730 */    96,   96,   95,   95,   94,   94,   94,   93,  350,   99,
 /*   740 */   100,   90,  971,  971,  847,  850,  839,  839,   97,   97,
 /*   750 */    98,   98,   98,   98,  132,  267,  260,  445,  330,  223,
 /*   760 */   175, 1289,  925,  752,  724,  318, 1073,  324,  751,  246,
 /*   770 */   385,  301,  301,  378,  329,  361,  344,  414, 1233,  280,
 /*   780 */    96,   96,   96,   96,   95,   95,   94,   94,   94,   93,
 /*   790 */   350,   99,   88,   90,  971,  971,  847,  850,  839,  839,
 /*   800 */    97,   97,   98,   98,   98,   98,  337,  346,  721,  722,
 /*   810 */   449,  120,  118,  887,  162,  887,  810,  371,  324,  202,
 /*   820 */   202,  373,  249,  263,  202,  394,   74,  704,  208, 1069,
 /*   830 */    12,   12,   96,   96,   96,   96,   95,   95,   94,   94,
 /*   840 */    94,   93,  350,  100,   90,  971,  971,  847,  850,  839,
 /*   850 */   839,   97,   97,   98,   98,   98,   98,  449,  771,  232,
 /*   860 */   449,  278,  120,  286,   74,  704,  714,  713,  324,  342,
 /*   870 */   749,  877, 1209,   77,  285, 1255,  780,   52,   52,  202,
 /*   880 */    27,   27,  418,   96,   96,   96,   96,   95,   95,   94,
 /*   890 */    94,   94,   93,  350,   90,  971,  971,  847,  850,  839,
 /*   900 */   839,   97,   97,   98,   98,   98,   98,   86,  444,  877,
 /*   910 */     3, 1193,  422, 1013,  873,  435,  886,  208,  886,  689,
 /*   920 */  1091,  257,  116,  822,  447, 1230,  117, 1229,   86,  444,
 /*   930 */   177,    3,  381,   96,   96,   96,   96,   95,   95,   94,
 /*   940 */    94,   94,   93,  350,  339,  447,  120,  351,  120,  212,
 /*   950 */   169,  287,  404,  282,  403,  199,  771,  950,  433,  419,
 /*   960 */   439,  822,  280,  691, 1039,  264,  269,  132,  351,  153,
 /*   970 */   826,  376,   74,  272,  274,  276,   83,   84, 1054,  433,
 /*   980 */   147, 1038,  443,   85,  351,  451,  450,  281,  132,  818,
 /*   990 */    25,  826,  449,  120,  950,  951,  952,   83,   84,   86,
 /*  1000 */   444,  691,    3,  408,   85,  351,  451,  450,  449,    5,
 /*  1010 */   818,  203,   32,   32, 1107,  120,  447,  950,  225, 1140,
 /*  1020 */   818,  818,  820,  821,   19,  203,  226,  950,   38,   38,
 /*  1030 */  1087,  314,  314,  313,  215,  311,  120,  449,  678,  351,
 /*  1040 */   237,  818,  818,  820,  821,   19,  969,  409,  377,    1,
 /*  1050 */   433,  180,  706,  248,  950,  951,  952,   10,   10,  449,
 /*  1060 */   969,  247,  826, 1098,  950,  951,  952,  430,   83,   84,
 /*  1070 */   756,  336,  950,   20,  431,   85,  351,  451,  450,   10,
 /*  1080 */    10,  818,   86,  444,  969,    3,  950,  449,  302,  303,
 /*  1090 */   182,  950, 1146,  338, 1021, 1015, 1004,  183,  969,  447,
 /*  1100 */   132,  181,   76,  444,   21,    3,  449,   10,   10,  950,
 /*  1110 */   951,  952,  818,  818,  820,  821,   19,  715, 1279,  447,
 /*  1120 */   389,  233,  351,  950,  951,  952,   10,   10,  950,  951,
 /*  1130 */   952, 1003,  218,  433, 1005,  325, 1273,  773,  289,  291,
 /*  1140 */   424,  293,  351,    7,  159,  826,  363,  402,  315,  360,
 /*  1150 */  1129,   83,   84,  433, 1232,  716,  772,  259,   85,  351,
 /*  1160 */   451,  450,  358,  375,  818,  826,  360,  359,  399, 1211,
 /*  1170 */   157,   83,   84,  681,   98,   98,   98,   98,   85,  351,
 /*  1180 */   451,  450,  323,  252,  818,  295, 1211, 1213, 1235,  173,
 /*  1190 */  1037,  284,  434,  340, 1204,  818,  818,  820,  821,   19,
 /*  1200 */   308,  234,  449,  234,   96,   96,   96,   96,   95,   95,
 /*  1210 */    94,   94,   94,   93,  350,  818,  818,  820,  821,   19,
 /*  1220 */   909,  120,   39,   39, 1203,  449,  168,  360,  449, 1276,
 /*  1230 */   367,  449,  135,  449,  986,  910,  449, 1249,  449, 1247,
 /*  1240 */   449,  205,  983,  449,  370,   40,   40, 1211,   41,   41,
 /*  1250 */   911,   42,   42,   28,   28,  870,   29,   29,   31,   31,
 /*  1260 */    43,   43,  379,   44,   44,  449,   59,  449,  332,  449,
 /*  1270 */   432,   62,  144,  156,  449,  130,  449,   72,  449,  137,
 /*  1280 */   449,  365,  449,  392,  139,   45,   45,   11,   11,   46,
 /*  1290 */    46,  140, 1200,  449,  105,  105,   47,   47,   48,   48,
 /*  1300 */    33,   33,   49,   49, 1126,  449,  141,  366,  449,  185,
 /*  1310 */   142,  449, 1234,   50,   50,  449,  160,  449,  148,  449,
 /*  1320 */  1136,  382,  449,   67,  449,   34,   34,  449,  122,  122,
 /*  1330 */   449,  123,  123,  449, 1198,  124,  124,   56,   56,   35,
 /*  1340 */    35,  449,  106,  106,   53,   53,  449,  107,  107,  449,
 /*  1350 */   108,  108,  449,  104,  104,  449,  406,  449,  388,  449,
 /*  1360 */   189,  121,  121,  449,  190,  449,  119,  119,  449,  112,
 /*  1370 */   112,  449,  111,  111, 1218,  109,  109,  110,  110,   55,
 /*  1380 */    55,  266,  752,   57,   57,   54,   54,  751,   26,   26,
 /*  1390 */  1099,   30,   30,  219,  154,  390,  271,  191,  321, 1006,
 /*  1400 */   192,  405, 1057, 1056, 1055,  341, 1048,  706, 1047, 1029,
 /*  1410 */   322,  420, 1028,   71, 1095,  283,  288, 1027, 1288,  204,
 /*  1420 */     6,  297,   79, 1184,  437, 1096, 1094,  290,  345,  292,
 /*  1430 */   441, 1093,  294,  102,  425,   73,  423,  213, 1012,   22,
 /*  1440 */   452,  945,  214, 1077,  216,  217,  238,  453,  306,  304,
 /*  1450 */   307,  239,  240, 1001,  305,  125,  996,  126,  115,  235,
 /*  1460 */   127,  665,  352,  166,  244,  179,  356,  113,  885,  883,
 /*  1470 */   806,  136,  128,  738,  326,  138,  327,  258,  184,  899,
 /*  1480 */   143,  129,  145,   63,   64,   65,   66,  902,  186,  187,
 /*  1490 */   898,    8,   13,  188,  134,  265,  891,  202,  980,  387,
 /*  1500 */   150,  149,  680,  161,  391,  193,  285,  279,  395,  151,
 /*  1510 */    68,  717,   14,   15,  400,   69,   16,  131,  236,  825,
 /*  1520 */   824,  853,  746,  750,    4,   70,  174,  413,  220,  222,
 /*  1530 */   152,  779,  774,   77,  868,   74,  854,  201,   17,  852,
 /*  1540 */   908,  206,  907,  207,   18,  857,  934,  163,  436,  210,
 /*  1550 */   935,  164,  209,  165,  440,  856,  823,  312,  690,   87,
 /*  1560 */   211,  309, 1281,  940,  995, 1280,
};
static const YYCODETYPE yy_lookahead[] = {
 /*     0 */    19,  144,  145,  146,  147,   24,   90,   91,   92,   93,
 /*    10 */    94,   54,   55,   56,   57,   58,   88,   89,   90,   91,
 /*    20 */    92,   93,   94,  152,   43,   44,   45,   46,   47,   48,
 /*    30 */    49,   50,   51,   52,   53,   54,   55,   56,   57,   94,
 /*    40 */    59,   84,   85,   86,   87,   88,   89,   90,   91,   92,
 /*    50 */    93,   94,   59,   84,   85,   86,   87,   88,   89,   90,
 /*    60 */    91,   92,   93,   94,  193,   84,   85,   86,   87,   88,
 /*    70 */    89,   90,   91,   92,   93,   94,  194,  195,   97,   79,
 /*    80 */    11,   88,   89,  152,   26,   19,  171,  152,  206,   96,
 /*    90 */    97,   98,   72,  100,  179,   59,  152,   31,  163,   79,
 /*   100 */   107,  219,  109,  172,  173,   39,   79,  172,  173,   43,
 /*   110 */    44,   45,   46,   47,   48,   49,   50,   51,   52,   53,
 /*   120 */    54,   55,   56,   57,  152,  132,  199,  134,  108,  109,
 /*   130 */   110,  196,   96,   97,   98,   99,  209,   19,  102,  103,
 /*   140 */   104,   72,  207,  208,   26,   72,  119,  120,   79,  113,
 /*   150 */    84,   85,   86,   87,   88,   89,   90,   91,   92,   93,
 /*   160 */    94,   43,   44,   45,   46,   47,   48,   49,   50,   51,
 /*   170 */    52,   53,   54,   55,   56,   57,   31,  108,  109,  110,
 /*   180 */    82,  108,  109,  110,   39,  210,   68,  175,  130,   19,
 /*   190 */   218,  175,  119,  120,  250,   97,  221,  222,  223,  101,
 /*   200 */   172,  152,   84,   85,   86,   87,   88,   89,   90,   91,
 /*   210 */    92,   93,   94,   43,   44,   45,   46,   47,   48,   49,
 /*   220 */    50,   51,   52,   53,   54,   55,   56,   57,  152,  152,
 /*   230 */   132,  133,  134,  221,  222,  223,   66,  221,  222,  223,
 /*   240 */   172,   19,  193,   22,   23,  152,   24,   26,  172,  173,
 /*   250 */    46,   47,   48,   49,   84,   85,   86,   87,   88,   89,
 /*   260 */    90,   91,   92,   93,   94,   43,   44,   45,   46,   47,
 /*   270 */    48,   49,   50,   51,   52,   53,   54,   55,   56,   57,
 /*   280 */   221,  222,  223,  207,  208,   46,   22,   23,  148,  149,
 /*   290 */    26,  242,  172,   19,  154,  218,  156,   23,   88,   89,
 /*   300 */   241,   59,  163,  163,   83,  101,   84,   85,   86,   87,
 /*   310 */    88,   89,   90,   91,   92,   93,   94,   43,   44,   45,
 /*   320 */    46,   47,   48,   49,   50,   51,   52,   53,   54,   55,
 /*   330 */    56,   57,  152,  157,  152,  196,  196,   16,   96,   97,
 /*   340 */    98,   26,  132,  250,  134,   19,  107,   83,   59,   23,
 /*   350 */   211,  212,  172,  173,  172,  173,    1,    2,   84,   85,
 /*   360 */    86,   87,   88,   89,   90,   91,   92,   93,   94,   43,
 /*   370 */    44,   45,   46,   47,   48,   49,   50,   51,   52,   53,
 /*   380 */    54,   55,   56,   57,  244,  152,   97,  207,  208,  207,
 /*   390 */   208,  185,  221,  222,  223,  152,   75,   19,   77,  179,
 /*   400 */   180,   23,   93,   94,  228,  172,  173,  231,  188,  152,
 /*   410 */    84,   85,   86,   87,   88,   89,   90,   91,   92,   93,
 /*   420 */    94,   43,   44,   45,   46,   47,   48,   49,   50,   51,
 /*   430 */    52,   53,   54,   55,   56,   57,  193,  152,  123,  152,
 /*   440 */   207,  208,  152,  168,  169,  170,  168,  169,  170,   19,
 /*   450 */   160,   22,   23,   23,  164,  119,  120,  172,  173,  172,
 /*   460 */   173,  140,   84,   85,   86,   87,   88,   89,   90,   91,
 /*   470 */    92,   93,   94,   43,   44,   45,   46,   47,   48,   49,
 /*   480 */    50,   51,   52,   53,   54,   55,   56,   57,   99,   22,
 /*   490 */    23,  102,  103,  104,  194,  195,    0,    1,    2,  247,
 /*   500 */   248,   19,  113,  190,  191,   23,  206,  190,  191,   59,
 /*   510 */   225,  152,   83,  152,   84,   85,   86,   87,   88,   89,
 /*   520 */    90,   91,   92,   93,   94,   43,   44,   45,   46,   47,
 /*   530 */    48,   49,   50,   51,   52,   53,   54,   55,   56,   57,
 /*   540 */    90,  181,  152,  108,  109,  110,   96,   97,   98,  115,
 /*   550 */    83,  117,  118,   19,  193,  152,   23,  152,  152,   26,
 /*   560 */    29,  152,  172,  173,   33,  152,   84,   85,   86,   87,
 /*   570 */    88,   89,   90,   91,   92,   93,   94,   43,   44,   45,
 /*   580 */    46,   47,   48,   49,   50,   51,   52,   53,   54,   55,
 /*   590 */    56,   57,   22,  152,   16,   64,  193,  207,  152,  193,
 /*   600 */    12,    7,    8,    9,  152,  108,  109,  110,   19,  152,
 /*   610 */   164,  146,  147,  172,  173,   27,  163,  181,   84,   85,
 /*   620 */    86,   87,   88,   89,   90,   91,   92,   93,   94,   59,
 /*   630 */    42,   98,   43,   44,   45,   46,   47,   48,   49,   50,
 /*   640 */    51,   52,   53,   54,   55,   56,   57,  238,   22,  196,
 /*   650 */    62,  163,   82,   75,  152,   77,  152,  124,   88,   89,
 /*   660 */    72,  152,  137,   19,  139,  152,   96,   97,   24,  152,
 /*   670 */   152,  101,  138,   84,   85,   86,   87,   88,   89,   90,
 /*   680 */    91,   92,   93,   94,  196,   59,   19,   43,   44,   45,
 /*   690 */    46,   47,   48,   49,   50,   51,   52,   53,   54,   55,
 /*   700 */    56,   57,  132,  133,  134,  152,  193,  219,  245,  246,
 /*   710 */   193,  152,  152,   46,  152,   19,  166,  167,  152,  217,
 /*   720 */   232,  217,   96,   97,   98,  237,  217,  138,   84,   85,
 /*   730 */    86,   87,   88,   89,   90,   91,   92,   93,   94,   43,
 /*   740 */    44,   45,   46,   47,   48,   49,   50,   51,   52,   53,
 /*   750 */    54,   55,   56,   57,   79,  193,  238,  166,  167,  211,
 /*   760 */   212,   23,   23,  116,   26,   26,  195,   19,  121,  152,
 /*   770 */   217,  152,  152,  152,  107,  100,  217,  206,  163,  112,
 /*   780 */    84,   85,   86,   87,   88,   89,   90,   91,   92,   93,
 /*   790 */    94,   43,   44,   45,   46,   47,   48,   49,   50,   51,
 /*   800 */    52,   53,   54,   55,   56,   57,  187,  187,    7,    8,
 /*   810 */   152,  196,   22,  132,   24,  134,   23,   23,   19,   26,
 /*   820 */    26,   23,  152,   23,   26,   23,   26,   59,   26,  163,
 /*   830 */   172,  173,   84,   85,   86,   87,   88,   89,   90,   91,
 /*   840 */    92,   93,   94,   44,   45,   46,   47,   48,   49,   50,
 /*   850 */    51,   52,   53,   54,   55,   56,   57,  152,   26,  238,
 /*   860 */   152,   23,  196,  101,   26,   97,  100,  101,   19,   19,
 /*   870 */    23,   59,  152,   26,  112,  152,   23,  172,  173,   26,
 /*   880 */   172,  173,   19,   84,   85,   86,   87,   88,   89,   90,
 /*   890 */    91,   92,   93,   94,   45,   46,   47,   48,   49,   50,
 /*   900 */    51,   52,   53,   54,   55,   56,   57,   19,   20,   97,
 /*   910 */    22,   23,  207,  163,   23,  163,  132,   26,  134,   23,
 /*   920 */   213,  152,   26,   59,   36,  152,   22,  152,   19,   20,
 /*   930 */    98,   22,  152,   84,   85,   86,   87,   88,   89,   90,
 /*   940 */    91,   92,   93,   94,   94,   36,  196,   59,  196,   99,
 /*   950 */   100,  101,  102,  103,  104,  105,  124,   59,   70,   96,
 /*   960 */   163,   97,  112,   59,  181,  152,  152,   79,   59,   71,
 /*   970 */    82,   19,   26,  152,  152,  152,   88,   89,  152,   70,
 /*   980 */    22,  152,  163,   95,   96,   97,   98,  152,   79,  101,
 /*   990 */    22,   82,  152,  196,   96,   97,   98,   88,   89,   19,
 /*  1000 */    20,   97,   22,  163,   95,   96,   97,   98,  152,   22,
 /*  1010 */   101,   24,  172,  173,  152,  196,   36,   59,   22,  152,
 /*  1020 */   132,  133,  134,  135,  136,   24,    5,   59,  172,  173,
 /*  1030 */   152,   10,   11,   12,   13,   14,  196,  152,   17,   59,
 /*  1040 */   210,  132,  133,  134,  135,  136,   59,  207,   96,   22,
 /*  1050 */    70,   30,  106,   32,   96,   97,   98,  172,  173,  152,
 /*  1060 */    59,   40,   82,  152,   96,   97,   98,  152,   88,   89,
 /*  1070 */    90,  186,   59,   22,  191,   95,   96,   97,   98,  172,
 /*  1080 */   173,  101,   19,   20,   97,   22,   59,  152,  152,  152,
 /*  1090 */    69,   59,  152,  186,  152,  152,  152,   76,   97,   36,
 /*  1100 */    79,   80,   19,   20,   53,   22,  152,  172,  173,   96,
 /*  1110 */    97,   98,  132,  133,  134,  135,  136,   35,  122,   36,
 /*  1120 */   234,  186,   59,   96,   97,   98,  172,  173,   96,   97,
 /*  1130 */    98,  152,  233,   70,  152,  114,  152,  124,  210,  210,
 /*  1140 */   186,  210,   59,  198,  197,   82,  214,   65,  150,  152,
 /*  1150 */   201,   88,   89,   70,  201,   73,  124,  239,   95,   96,
 /*  1160 */    97,   98,  141,  239,  101,   82,  169,  170,  176,  152,
 /*  1170 */   152,   88,   89,   21,   54,   55,   56,   57,   95,   96,
 /*  1180 */    97,   98,  164,  214,  101,  214,  169,  170,  163,  184,
 /*  1190 */   180,  175,  227,  111,  175,  132,  133,  134,  135,  136,
 /*  1200 */   200,  183,  152,  185,   84,   85,   86,   87,   88,   89,
 /*  1210 */    90,   91,   92,   93,   94,  132,  133,  134,  135,  136,
 /*  1220 */    12,  196,  172,  173,  175,  152,  198,  230,  152,  155,
 /*  1230 */    78,  152,  243,  152,   60,   27,  152,  159,  152,  159,
 /*  1240 */   152,  122,   38,  152,  219,  172,  173,  230,  172,  173,
 /*  1250 */    42,  172,  173,  172,  173,  103,  172,  173,  172,  173,
 /*  1260 */   172,  173,  237,  172,  173,  152,  240,  152,  159,  152,
 /*  1270 */    62,  240,   22,  220,  152,   43,  152,  130,  152,  189,
 /*  1280 */   152,   18,  152,   18,  192,  172,  173,  172,  173,  172,
 /*  1290 */   173,  192,  140,  152,  172,  173,  172,  173,  172,  173,
 /*  1300 */   172,  173,  172,  173,  201,  152,  192,  159,  152,  158,
 /*  1310 */   192,  152,  201,  172,  173,  152,  220,  152,  189,  152,
 /*  1320 */   189,  159,  152,  137,  152,  172,  173,  152,  172,  173,
 /*  1330 */   152,  172,  173,  152,  201,  172,  173,  172,  173,  172,
 /*  1340 */   173,  152,  172,  173,  172,  173,  152,  172,  173,  152,
 /*  1350 */   172,  173,  152,  172,  173,  152,   90,  152,   61,  152,
 /*  1360 */   158,  172,  173,  152,  158,  152,  172,  173,  152,  172,
 /*  1370 */   173,  152,  172,  173,  236,  172,  173,  172,  173,  172,
 /*  1380 */   173,  235,  116,  172,  173,  172,  173,  121,  172,  173,
 /*  1390 */   159,  172,  173,  159,   22,  177,  159,  158,  177,  159,
 /*  1400 */   158,  107,  174,  174,  174,   63,  182,  106,  182,  174,
 /*  1410 */   177,  125,  176,  107,  216,  174,  215,  174,  174,  159,
 /*  1420 */    22,  159,  137,  224,  177,  216,  216,  215,   94,  215,
 /*  1430 */   177,  216,  215,  129,  126,  128,  127,   25,  162,   26,
 /*  1440 */   161,   13,  153,  205,  153,    6,  226,  151,  202,  204,
 /*  1450 */   201,  229,  229,  151,  203,  165,  151,  165,  178,  178,
 /*  1460 */   165,    4,    3,   22,  142,   15,   81,   16,   23,   23,
 /*  1470 */   120,  131,  111,   20,  249,  123,  249,   16,  125,    1,
 /*  1480 */   123,  111,  131,   53,   53,   53,   53,   96,   34,  122,
 /*  1490 */     1,    5,   22,  107,  246,  140,   67,   26,   74,   41,
 /*  1500 */   107,   67,   20,   24,   19,  105,  112,   23,   66,   22,
 /*  1510 */    22,   28,   22,   22,   66,   22,   22,   37,   66,   23,
 /*  1520 */    23,   23,  116,   23,   22,   26,  122,   26,   23,   23,
 /*  1530 */    22,   96,  124,   26,   23,   26,   23,   34,   34,   23,
 /*  1540 */    23,   26,   23,   22,   34,   11,   23,   22,   24,  122,
 /*  1550 */    23,   22,   26,   22,   24,   23,   23,   15,   23,   22,
 /*  1560 */   122,   23,  122,    1,  251,  122,
};
#define YY_SHIFT_USE_DFLT (1566)
#define YY_SHIFT_COUNT    (454)
#define YY_SHIFT_MIN      (-84)
#define YY_SHIFT_MAX      (1562)
static const short yy_shift_ofst[] = {
 /*     0 */   355,  888, 1021,  909, 1063, 1063, 1063, 1063,   20,  -19,
 /*    10 */    66,   66,  170, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
 /*    20 */    -7,   -7,   36,   73,   69,   27,  118,  222,  274,  326,
 /*    30 */   378,  430,  482,  534,  589,  644,  696,  696,  696,  696,
 /*    40 */   696,  696,  696,  696,  696,  696,  696,  696,  696,  696,
 /*    50 */   696,  696,  696,  748,  696,  799,  849,  849,  980, 1063,
 /*    60 */  1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
 /*    70 */  1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
 /*    80 */  1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
 /*    90 */  1083, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
 /*   100 */  1063, 1063, 1063, 1063,  -43, 1120, 1120, 1120, 1120, 1120,
 /*   110 */   -31,  -72,  -84,  242, 1152,  667,  210,  210,  242,  309,
 /*   120 */   336,  -55, 1566, 1566, 1566,  850,  850,  850,  626,  626,
 /*   130 */   588,  588,  898,  221,  264,  242,  242,  242,  242,  242,
 /*   140 */   242,  242,  242,  242,  242,  242,  242,  242,  242,  242,
 /*   150 */   242,  242,  242,  242,  242,  496,  675,  289,  289,  336,
 /*   160 */     0,    0,    0,    0,    0,    0, 1566, 1566, 1566,  570,
 /*   170 */    98,   98,  958,  389,  450,  968, 1013, 1032, 1027,  242,
 /*   180 */   242,  242,  242,  242,  242,  242,  242,  242,  242,  242,
 /*   190 */   242,  242,  242,  242,  242, 1082, 1082, 1082,  242,  242,
 /*   200 */   533,  242,  242,  242,  987,  242,  242, 1208,  242,  242,
 /*   210 */   242,  242,  242,  242,  242,  242,  242,  242,  435,  531,
 /*   220 */  1001, 1001, 1001,  832,  434, 1266,  594,   58,  863,  863,
 /*   230 */   952,   58,  952,  946,  738,  239,  145,  863,  525,  145,
 /*   240 */   145,  315,  647,  790, 1174, 1119, 1119, 1204, 1204, 1119,
 /*   250 */  1250, 1232, 1147, 1263, 1263, 1263, 1263, 1119, 1265, 1147,
 /*   260 */  1250, 1232, 1232, 1147, 1119, 1265, 1186, 1297, 1119, 1119,
 /*   270 */  1265, 1372, 1119, 1265, 1119, 1265, 1372, 1294, 1294, 1294,
 /*   280 */  1342, 1372, 1294, 1301, 1294, 1342, 1294, 1294, 1286, 1306,
 /*   290 */  1286, 1306, 1286, 1306, 1286, 1306, 1119, 1398, 1119, 1285,
 /*   300 */  1372, 1334, 1334, 1372, 1304, 1308, 1307, 1309, 1147, 1412,
 /*   310 */  1413, 1428, 1428, 1439, 1439, 1439, 1566, 1566, 1566, 1566,
 /*   320 */  1566, 1566, 1566, 1566,  204,  321,  429,  467,  578,  497,
 /*   330 */   904,  739, 1051,  793,  794,  798,  800,  802,  838,  768,
 /*   340 */   766,  801,  762,  847,  853,  812,  891,  681,  784,  896,
 /*   350 */   864,  996, 1457, 1459, 1441, 1322, 1450, 1385, 1451, 1445,
 /*   360 */  1446, 1350, 1340, 1361, 1352, 1453, 1353, 1461, 1478, 1357,
 /*   370 */  1351, 1430, 1431, 1432, 1433, 1370, 1391, 1454, 1367, 1489,
 /*   380 */  1486, 1470, 1386, 1355, 1429, 1471, 1434, 1424, 1458, 1393,
 /*   390 */  1479, 1482, 1485, 1394, 1400, 1487, 1442, 1488, 1490, 1484,
 /*   400 */  1491, 1448, 1483, 1493, 1452, 1480, 1496, 1497, 1498, 1499,
 /*   410 */  1406, 1494, 1500, 1502, 1501, 1404, 1505, 1506, 1435, 1503,
 /*   420 */  1508, 1408, 1507, 1504, 1509, 1510, 1511, 1507, 1513, 1516,
 /*   430 */  1517, 1515, 1519, 1521, 1534, 1523, 1525, 1524, 1526, 1527,
 /*   440 */  1529, 1530, 1526, 1532, 1531, 1533, 1535, 1537, 1427, 1438,
 /*   450 */  1440, 1443, 1538, 1542, 1562,
};
#define YY_REDUCE_USE_DFLT (-144)
#define YY_REDUCE_COUNT (323)
#define YY_REDUCE_MIN   (-143)
#define YY_REDUCE_MAX   (1305)
static const short yy_reduce_ofst[] = {
 /*     0 */  -143,  -65,  140,  840,   76,  180,  182,  233,  488,  -25,
 /*    10 */    12,   16,   59,  885,  907,  935,  390,  705,  954,  285,
 /*    20 */   997, 1017, 1018, -118, 1025,  139,  171,  171,  171,  171,
 /*    30 */   171,  171,  171,  171,  171,  171,  171,  171,  171,  171,
 /*    40 */   171,  171,  171,  171,  171,  171,  171,  171,  171,  171,
 /*    50 */   171,  171,  171,  171,  171,  171,  171,  171,  -69,  287,
 /*    60 */   441,  658,  708,  856, 1050, 1073, 1076, 1079, 1081, 1084,
 /*    70 */  1086, 1088, 1091, 1113, 1115, 1117, 1122, 1124, 1126, 1128,
 /*    80 */  1130, 1141, 1153, 1156, 1159, 1163, 1165, 1167, 1170, 1172,
 /*    90 */  1175, 1178, 1181, 1189, 1194, 1197, 1200, 1203, 1205, 1207,
 /*   100 */  1211, 1213, 1216, 1219,  171,  171,  171,  171,  171,  171,
 /*   110 */   171,  171,  171,   49,  176,  220,  275,  278,  290,  171,
 /*   120 */   300,  171,  171,  171,  171,  -85,  -85,  -85,  -28,   77,
 /*   130 */   313,  317,  -56,  252,  252,  446, -129,  243,  361,  403,
 /*   140 */   406,  513,  517,  409,  502,  518,  504,  509,  621,  553,
 /*   150 */   562,  619,  559,   93,  620,  465,  453,  550,  591,  571,
 /*   160 */   615,  666,  750,  752,  797,  819,  463,  548,  -73,   28,
 /*   170 */    68,  120,  257,  206,  359,  405,  413,  452,  457,  560,
 /*   180 */   566,  617,  670,  720,  723,  769,  773,  775,  780,  813,
 /*   190 */   814,  821,  822,  823,  826,  360,  436,  783,  829,  835,
 /*   200 */   707,  862,  867,  878,  830,  911,  915,  883,  936,  937,
 /*   210 */   940,  359,  942,  943,  944,  979,  982,  984,  886,  899,
 /*   220 */   928,  929,  931,  707,  947,  945,  998,  949,  932,  969,
 /*   230 */   918,  953,  924,  992, 1005, 1010, 1016,  971,  965, 1019,
 /*   240 */  1049, 1000, 1028, 1074,  989, 1078, 1080, 1026, 1031, 1109,
 /*   250 */  1053, 1090, 1103, 1092, 1099, 1114, 1118, 1148, 1151, 1111,
 /*   260 */  1096, 1129, 1131, 1133, 1162, 1202, 1138, 1146, 1231, 1234,
 /*   270 */  1206, 1218, 1237, 1239, 1240, 1242, 1221, 1228, 1229, 1230,
 /*   280 */  1224, 1233, 1235, 1236, 1241, 1226, 1243, 1244, 1198, 1201,
 /*   290 */  1209, 1212, 1210, 1214, 1215, 1217, 1260, 1199, 1262, 1220,
 /*   300 */  1247, 1222, 1223, 1253, 1238, 1245, 1251, 1246, 1249, 1276,
 /*   310 */  1279, 1289, 1291, 1296, 1302, 1305, 1225, 1227, 1248, 1290,
 /*   320 */  1292, 1280, 1281, 1295,
};
static const YYACTIONTYPE yy_default[] = {
 /*     0 */  1270, 1260, 1260, 1260, 1193, 1193, 1193, 1193, 1260, 1088,
 /*    10 */  1117, 1117, 1244, 1322, 1322, 1322, 1322, 1322, 1322, 1192,
 /*    20 */  1322, 1322, 1322, 1322, 1260, 1092, 1123, 1322, 1322, 1322,
 /*    30 */  1322, 1194, 1195, 1322, 1322, 1322, 1243, 1245, 1133, 1132,
 /*    40 */  1131, 1130, 1226, 1104, 1128, 1121, 1125, 1194, 1188, 1189,
 /*    50 */  1187, 1191, 1195, 1322, 1124, 1158, 1172, 1157, 1322, 1322,
 /*    60 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*    70 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*    80 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*    90 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   100 */  1322, 1322, 1322, 1322, 1166, 1171, 1178, 1170, 1167, 1160,
 /*   110 */  1159, 1161, 1162, 1322, 1011, 1059, 1322, 1322, 1322, 1163,
 /*   120 */  1322, 1164, 1175, 1174, 1173, 1251, 1278, 1277, 1322, 1322,
 /*   130 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   140 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   150 */  1322, 1322, 1322, 1322, 1322, 1270, 1260, 1017, 1017, 1322,
 /*   160 */  1260, 1260, 1260, 1260, 1260, 1260, 1256, 1092, 1083, 1322,
 /*   170 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   180 */  1248, 1246, 1322, 1208, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   190 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   200 */  1322, 1322, 1322, 1322, 1088, 1322, 1322, 1322, 1322, 1322,
 /*   210 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1272, 1322, 1221,
 /*   220 */  1088, 1088, 1088, 1090, 1072, 1082,  997, 1127, 1106, 1106,
 /*   230 */  1311, 1127, 1311, 1034, 1292, 1031, 1117, 1106, 1190, 1117,
 /*   240 */  1117, 1089, 1082, 1322, 1314, 1097, 1097, 1313, 1313, 1097,
 /*   250 */  1138, 1062, 1127, 1068, 1068, 1068, 1068, 1097, 1008, 1127,
 /*   260 */  1138, 1062, 1062, 1127, 1097, 1008, 1225, 1308, 1097, 1097,
 /*   270 */  1008, 1201, 1097, 1008, 1097, 1008, 1201, 1060, 1060, 1060,
 /*   280 */  1049, 1201, 1060, 1034, 1060, 1049, 1060, 1060, 1110, 1105,
 /*   290 */  1110, 1105, 1110, 1105, 1110, 1105, 1097, 1196, 1097, 1322,
 /*   300 */  1201, 1205, 1205, 1201, 1122, 1111, 1120, 1118, 1127, 1014,
 /*   310 */  1052, 1275, 1275, 1271, 1271, 1271, 1319, 1319, 1256, 1287,
 /*   320 */  1287, 1036, 1036, 1287, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   330 */  1282, 1322, 1210, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   340 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   350 */  1322, 1143, 1322,  993, 1253, 1322, 1322, 1252, 1322, 1322,
 /*   360 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   370 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1310, 1322,
 /*   380 */  1322, 1322, 1322, 1322, 1322, 1224, 1223, 1322, 1322, 1322,
 /*   390 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   400 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
 /*   410 */  1074, 1322, 1322, 1322, 1296, 1322, 1322, 1322, 1322, 1322,
 /*   420 */  1322, 1322, 1119, 1322, 1112, 1322, 1322, 1301, 1322, 1322,
 /*   430 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1262, 1322,
 /*   440 */  1322, 1322, 1261, 1322, 1322, 1322, 1322, 1322, 1145, 1322,
 /*   450 */  1144, 1148, 1322, 1002, 1322,











};
/********** End of lemon-generated parsing tables *****************************/

/* The next table maps tokens (terminal symbols) into fallback tokens.  
** If a construct like the following:
** 
**      %fallback ID X Y Z.
................................................................................
  yyTraceFILE = TraceFILE;
  yyTracePrompt = zTracePrompt;
  if( yyTraceFILE==0 ) yyTracePrompt = 0;
  else if( yyTracePrompt==0 ) yyTraceFILE = 0;
}
#endif /* NDEBUG */

#ifndef NDEBUG
/* For tracing shifts, the names of all terminals and nonterminals
** are required.  The following table supplies these names */
static const char *const yyTokenName[] = { 
  "$",             "SEMI",          "EXPLAIN",       "QUERY",       
  "PLAN",          "BEGIN",         "TRANSACTION",   "DEFERRED",    
  "IMMEDIATE",     "EXCLUSIVE",     "COMMIT",        "END",         
  "ROLLBACK",      "SAVEPOINT",     "RELEASE",       "TO",          
  "TABLE",         "CREATE",        "IF",            "NOT",         
  "EXISTS",        "TEMP",          "LP",            "RP",          
  "AS",            "WITHOUT",       "COMMA",         "ABORT",       
  "ACTION",        "AFTER",         "ANALYZE",       "ASC",         
  "ATTACH",        "BEFORE",        "BY",            "CASCADE",     
  "CAST",          "CONFLICT",      "DATABASE",      "DESC",        
  "DETACH",        "EACH",          "FAIL",          "OR",          
  "AND",           "IS",            "MATCH",         "LIKE_KW",     
  "BETWEEN",       "IN",            "ISNULL",        "NOTNULL",     
  "NE",            "EQ",            "GT",            "LE",          
  "LT",            "GE",            "ESCAPE",        "ID",          
  "COLUMNKW",      "FOR",           "IGNORE",        "INITIALLY",   
  "INSTEAD",       "NO",            "KEY",           "OF",          
  "OFFSET",        "PRAGMA",        "RAISE",         "RECURSIVE",   
  "REPLACE",       "RESTRICT",      "ROW",           "TRIGGER",     
  "VACUUM",        "VIEW",          "VIRTUAL",       "WITH",        
  "REINDEX",       "RENAME",        "CTIME_KW",      "ANY",         
  "BITAND",        "BITOR",         "LSHIFT",        "RSHIFT",      
  "PLUS",          "MINUS",         "STAR",          "SLASH",       
  "REM",           "CONCAT",        "COLLATE",       "BITNOT",      
  "INDEXED",       "STRING",        "JOIN_KW",       "CONSTRAINT",  
  "DEFAULT",       "NULL",          "PRIMARY",       "UNIQUE",      
  "CHECK",         "REFERENCES",    "AUTOINCR",      "ON",          
  "INSERT",        "DELETE",        "UPDATE",        "SET",         
  "DEFERRABLE",    "FOREIGN",       "DROP",          "UNION",       
  "ALL",           "EXCEPT",        "INTERSECT",     "SELECT",      
  "VALUES",        "DISTINCT",      "DOT",           "FROM",        
  "JOIN",          "USING",         "ORDER",         "GROUP",       
  "HAVING",        "LIMIT",         "WHERE",         "INTO",        
  "FLOAT",         "BLOB",          "INTEGER",       "VARIABLE",    
  "CASE",          "WHEN",          "THEN",          "ELSE",        
  "INDEX",         "ALTER",         "ADD",           "error",       
  "input",         "cmdlist",       "ecmd",          "explain",     
  "cmdx",          "cmd",           "transtype",     "trans_opt",   





















































































































  "nm",            "savepoint_opt",  "create_table",  "create_table_args",
  "createkw",      "temp",          "ifnotexists",   "dbnm",        






  "columnlist",    "conslist_opt",  "table_options",  "select",      
  "columnname",    "carglist",      "typetoken",     "typename",    
  "signed",        "plus_num",      "minus_num",     "ccons",       
  "term",          "expr",          "onconf",        "sortorder",   

















  "autoinc",       "eidlist_opt",   "refargs",       "defer_subclause",


  "refarg",        "refact",        "init_deferred_pred_opt",  "conslist",    
  "tconscomma",    "tcons",         "sortlist",      "eidlist",     





  "defer_subclause_opt",  "orconf",        "resolvetype",   "raisetype",   
  "ifexists",      "fullname",      "selectnowith",  "oneselect",   








  "with",          "multiselect_op",  "distinct",      "selcollist",  
  "from",          "where_opt",     "groupby_opt",   "having_opt",  
  "orderby_opt",   "limit_opt",     "values",        "nexprlist",   
  "exprlist",      "sclp",          "as",            "seltablist",  
  "stl_prefix",    "joinop",        "indexed_opt",   "on_opt",      
  "using_opt",     "idlist",        "setlist",       "insert_cmd",  
  "idlist_opt",    "likeop",        "between_op",    "in_op",       


























  "paren_exprlist",  "case_operand",  "case_exprlist",  "case_else",   
  "uniqueflag",    "collate",       "nmnum",         "trigger_decl",







  "trigger_cmd_list",  "trigger_time",  "trigger_event",  "foreach_clause",
  "when_clause",   "trigger_cmd",   "trnm",          "tridxby",     









  "database_kw_opt",  "key_opt",       "add_column_fullname",  "kwcolumn_opt",
  "create_vtab",   "vtabarglist",   "vtabarg",       "vtabargtoken",
  "lp",            "anylist",       "wqlist",      








};
#endif /* NDEBUG */


#ifndef NDEBUG
/* For tracing reduce actions, the names of all rules are required.
*/
static const char *const yyRuleName[] = {
 /*   0 */ "explain ::= EXPLAIN",
 /*   1 */ "explain ::= EXPLAIN QUERY PLAN",
................................................................................
 /*  21 */ "table_options ::=",
 /*  22 */ "table_options ::= WITHOUT nm",
 /*  23 */ "columnname ::= nm typetoken",
 /*  24 */ "typetoken ::=",
 /*  25 */ "typetoken ::= typename LP signed RP",
 /*  26 */ "typetoken ::= typename LP signed COMMA signed RP",
 /*  27 */ "typename ::= typename ID|STRING",

 /*  28 */ "ccons ::= CONSTRAINT nm",
 /*  29 */ "ccons ::= DEFAULT term",
 /*  30 */ "ccons ::= DEFAULT LP expr RP",
 /*  31 */ "ccons ::= DEFAULT PLUS term",
 /*  32 */ "ccons ::= DEFAULT MINUS term",
 /*  33 */ "ccons ::= DEFAULT ID|INDEXED",
 /*  34 */ "ccons ::= NOT NULL onconf",
 /*  35 */ "ccons ::= PRIMARY KEY sortorder onconf autoinc",
 /*  36 */ "ccons ::= UNIQUE onconf",
 /*  37 */ "ccons ::= CHECK LP expr RP",
 /*  38 */ "ccons ::= REFERENCES nm eidlist_opt refargs",
 /*  39 */ "ccons ::= defer_subclause",
 /*  40 */ "ccons ::= COLLATE ID|STRING",
 /*  41 */ "autoinc ::=",
 /*  42 */ "autoinc ::= AUTOINCR",
 /*  43 */ "refargs ::=",
 /*  44 */ "refargs ::= refargs refarg",
 /*  45 */ "refarg ::= MATCH nm",
 /*  46 */ "refarg ::= ON INSERT refact",
 /*  47 */ "refarg ::= ON DELETE refact",
 /*  48 */ "refarg ::= ON UPDATE refact",
 /*  49 */ "refact ::= SET NULL",
 /*  50 */ "refact ::= SET DEFAULT",
 /*  51 */ "refact ::= CASCADE",
 /*  52 */ "refact ::= RESTRICT",
 /*  53 */ "refact ::= NO ACTION",
 /*  54 */ "defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt",
 /*  55 */ "defer_subclause ::= DEFERRABLE init_deferred_pred_opt",
 /*  56 */ "init_deferred_pred_opt ::=",
 /*  57 */ "init_deferred_pred_opt ::= INITIALLY DEFERRED",
 /*  58 */ "init_deferred_pred_opt ::= INITIALLY IMMEDIATE",
 /*  59 */ "conslist_opt ::=",
 /*  60 */ "tconscomma ::= COMMA",
 /*  61 */ "tcons ::= CONSTRAINT nm",
 /*  62 */ "tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf",
 /*  63 */ "tcons ::= UNIQUE LP sortlist RP onconf",
 /*  64 */ "tcons ::= CHECK LP expr RP onconf",
 /*  65 */ "tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt",
 /*  66 */ "defer_subclause_opt ::=",
 /*  67 */ "onconf ::=",
 /*  68 */ "onconf ::= ON CONFLICT resolvetype",
 /*  69 */ "orconf ::=",
 /*  70 */ "orconf ::= OR resolvetype",
 /*  71 */ "resolvetype ::= IGNORE",
 /*  72 */ "resolvetype ::= REPLACE",
 /*  73 */ "cmd ::= DROP TABLE ifexists fullname",
 /*  74 */ "ifexists ::= IF EXISTS",
 /*  75 */ "ifexists ::=",
 /*  76 */ "cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select",
 /*  77 */ "cmd ::= DROP VIEW ifexists fullname",
 /*  78 */ "cmd ::= select",
 /*  79 */ "select ::= with selectnowith",
 /*  80 */ "selectnowith ::= selectnowith multiselect_op oneselect",
 /*  81 */ "multiselect_op ::= UNION",
 /*  82 */ "multiselect_op ::= UNION ALL",
 /*  83 */ "multiselect_op ::= EXCEPT|INTERSECT",
 /*  84 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt",
 /*  85 */ "values ::= VALUES LP nexprlist RP",
 /*  86 */ "values ::= values COMMA LP exprlist RP",
 /*  87 */ "distinct ::= DISTINCT",
 /*  88 */ "distinct ::= ALL",
 /*  89 */ "distinct ::=",
 /*  90 */ "sclp ::=",
 /*  91 */ "selcollist ::= sclp expr as",
 /*  92 */ "selcollist ::= sclp STAR",
 /*  93 */ "selcollist ::= sclp nm DOT STAR",
 /*  94 */ "as ::= AS nm",
 /*  95 */ "as ::=",
 /*  96 */ "from ::=",

 /*  97 */ "from ::= FROM seltablist",
 /*  98 */ "stl_prefix ::= seltablist joinop",
 /*  99 */ "stl_prefix ::=",
 /* 100 */ "seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt",
 /* 101 */ "seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt",
 /* 102 */ "seltablist ::= stl_prefix LP select RP as on_opt using_opt",
 /* 103 */ "seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt",
 /* 104 */ "dbnm ::=",
 /* 105 */ "dbnm ::= DOT nm",
 /* 106 */ "fullname ::= nm dbnm",
 /* 107 */ "joinop ::= COMMA|JOIN",
 /* 108 */ "joinop ::= JOIN_KW JOIN",
 /* 109 */ "joinop ::= JOIN_KW nm JOIN",
 /* 110 */ "joinop ::= JOIN_KW nm nm JOIN",
 /* 111 */ "on_opt ::= ON expr",
 /* 112 */ "on_opt ::=",
 /* 113 */ "indexed_opt ::=",
 /* 114 */ "indexed_opt ::= INDEXED BY nm",
 /* 115 */ "indexed_opt ::= NOT INDEXED",
 /* 116 */ "using_opt ::= USING LP idlist RP",
 /* 117 */ "using_opt ::=",
 /* 118 */ "orderby_opt ::=",
 /* 119 */ "orderby_opt ::= ORDER BY sortlist",
 /* 120 */ "sortlist ::= sortlist COMMA expr sortorder",
 /* 121 */ "sortlist ::= expr sortorder",
 /* 122 */ "sortorder ::= ASC",
 /* 123 */ "sortorder ::= DESC",
 /* 124 */ "sortorder ::=",
 /* 125 */ "groupby_opt ::=",
 /* 126 */ "groupby_opt ::= GROUP BY nexprlist",
 /* 127 */ "having_opt ::=",
 /* 128 */ "having_opt ::= HAVING expr",
 /* 129 */ "limit_opt ::=",
 /* 130 */ "limit_opt ::= LIMIT expr",
 /* 131 */ "limit_opt ::= LIMIT expr OFFSET expr",
 /* 132 */ "limit_opt ::= LIMIT expr COMMA expr",
 /* 133 */ "cmd ::= with DELETE FROM fullname indexed_opt where_opt",
 /* 134 */ "where_opt ::=",
 /* 135 */ "where_opt ::= WHERE expr",
 /* 136 */ "cmd ::= with UPDATE orconf fullname indexed_opt SET setlist where_opt",
 /* 137 */ "setlist ::= setlist COMMA nm EQ expr",
 /* 138 */ "setlist ::= setlist COMMA LP idlist RP EQ expr",
 /* 139 */ "setlist ::= nm EQ expr",
 /* 140 */ "setlist ::= LP idlist RP EQ expr",
 /* 141 */ "cmd ::= with insert_cmd INTO fullname idlist_opt select",
 /* 142 */ "cmd ::= with insert_cmd INTO fullname idlist_opt DEFAULT VALUES",
 /* 143 */ "insert_cmd ::= INSERT orconf",
 /* 144 */ "insert_cmd ::= REPLACE",
 /* 145 */ "idlist_opt ::=",
 /* 146 */ "idlist_opt ::= LP idlist RP",
 /* 147 */ "idlist ::= idlist COMMA nm",
 /* 148 */ "idlist ::= nm",
 /* 149 */ "expr ::= LP expr RP",
 /* 150 */ "expr ::= ID|INDEXED",
 /* 151 */ "expr ::= JOIN_KW",
 /* 152 */ "expr ::= nm DOT nm",
 /* 153 */ "expr ::= nm DOT nm DOT nm",
 /* 154 */ "term ::= NULL|FLOAT|BLOB",
 /* 155 */ "term ::= STRING",
 /* 156 */ "term ::= INTEGER",
 /* 157 */ "expr ::= VARIABLE",
 /* 158 */ "expr ::= expr COLLATE ID|STRING",
 /* 159 */ "expr ::= CAST LP expr AS typetoken RP",
 /* 160 */ "expr ::= ID|INDEXED LP distinct exprlist RP",
 /* 161 */ "expr ::= ID|INDEXED LP STAR RP",
 /* 162 */ "term ::= CTIME_KW",
 /* 163 */ "expr ::= LP nexprlist COMMA expr RP",
 /* 164 */ "expr ::= expr AND expr",
 /* 165 */ "expr ::= expr OR expr",
 /* 166 */ "expr ::= expr LT|GT|GE|LE expr",
 /* 167 */ "expr ::= expr EQ|NE expr",
 /* 168 */ "expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr",
 /* 169 */ "expr ::= expr PLUS|MINUS expr",
 /* 170 */ "expr ::= expr STAR|SLASH|REM expr",
 /* 171 */ "expr ::= expr CONCAT expr",
 /* 172 */ "likeop ::= NOT LIKE_KW|MATCH",
 /* 173 */ "expr ::= expr likeop expr",
 /* 174 */ "expr ::= expr likeop expr ESCAPE expr",
 /* 175 */ "expr ::= expr ISNULL|NOTNULL",
 /* 176 */ "expr ::= expr NOT NULL",
 /* 177 */ "expr ::= expr IS expr",
 /* 178 */ "expr ::= expr IS NOT expr",
 /* 179 */ "expr ::= NOT expr",
 /* 180 */ "expr ::= BITNOT expr",
 /* 181 */ "expr ::= MINUS expr",
 /* 182 */ "expr ::= PLUS expr",
 /* 183 */ "between_op ::= BETWEEN",
 /* 184 */ "between_op ::= NOT BETWEEN",
 /* 185 */ "expr ::= expr between_op expr AND expr",
 /* 186 */ "in_op ::= IN",
 /* 187 */ "in_op ::= NOT IN",
 /* 188 */ "expr ::= expr in_op LP exprlist RP",
 /* 189 */ "expr ::= LP select RP",
 /* 190 */ "expr ::= expr in_op LP select RP",
 /* 191 */ "expr ::= expr in_op nm dbnm paren_exprlist",
 /* 192 */ "expr ::= EXISTS LP select RP",
 /* 193 */ "expr ::= CASE case_operand case_exprlist case_else END",
 /* 194 */ "case_exprlist ::= case_exprlist WHEN expr THEN expr",
 /* 195 */ "case_exprlist ::= WHEN expr THEN expr",
 /* 196 */ "case_else ::= ELSE expr",
 /* 197 */ "case_else ::=",
 /* 198 */ "case_operand ::= expr",
 /* 199 */ "case_operand ::=",
 /* 200 */ "exprlist ::=",
 /* 201 */ "nexprlist ::= nexprlist COMMA expr",
 /* 202 */ "nexprlist ::= expr",
 /* 203 */ "paren_exprlist ::=",
 /* 204 */ "paren_exprlist ::= LP exprlist RP",
 /* 205 */ "cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt",
 /* 206 */ "uniqueflag ::= UNIQUE",
 /* 207 */ "uniqueflag ::=",
 /* 208 */ "eidlist_opt ::=",
 /* 209 */ "eidlist_opt ::= LP eidlist RP",
 /* 210 */ "eidlist ::= eidlist COMMA nm collate sortorder",
 /* 211 */ "eidlist ::= nm collate sortorder",
 /* 212 */ "collate ::=",
 /* 213 */ "collate ::= COLLATE ID|STRING",
 /* 214 */ "cmd ::= DROP INDEX ifexists fullname",
 /* 215 */ "cmd ::= VACUUM",
 /* 216 */ "cmd ::= VACUUM nm",
 /* 217 */ "cmd ::= PRAGMA nm dbnm",
 /* 218 */ "cmd ::= PRAGMA nm dbnm EQ nmnum",
 /* 219 */ "cmd ::= PRAGMA nm dbnm LP nmnum RP",
 /* 220 */ "cmd ::= PRAGMA nm dbnm EQ minus_num",
 /* 221 */ "cmd ::= PRAGMA nm dbnm LP minus_num RP",
 /* 222 */ "plus_num ::= PLUS INTEGER|FLOAT",
 /* 223 */ "minus_num ::= MINUS INTEGER|FLOAT",
 /* 224 */ "cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END",
 /* 225 */ "trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause",
 /* 226 */ "trigger_time ::= BEFORE|AFTER",
 /* 227 */ "trigger_time ::= INSTEAD OF",
 /* 228 */ "trigger_time ::=",
 /* 229 */ "trigger_event ::= DELETE|INSERT",
 /* 230 */ "trigger_event ::= UPDATE",
 /* 231 */ "trigger_event ::= UPDATE OF idlist",
 /* 232 */ "when_clause ::=",
 /* 233 */ "when_clause ::= WHEN expr",
 /* 234 */ "trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI",
 /* 235 */ "trigger_cmd_list ::= trigger_cmd SEMI",
 /* 236 */ "trnm ::= nm DOT nm",
 /* 237 */ "tridxby ::= INDEXED BY nm",
 /* 238 */ "tridxby ::= NOT INDEXED",
 /* 239 */ "trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt",
 /* 240 */ "trigger_cmd ::= insert_cmd INTO trnm idlist_opt select",
 /* 241 */ "trigger_cmd ::= DELETE FROM trnm tridxby where_opt",
 /* 242 */ "trigger_cmd ::= select",
 /* 243 */ "expr ::= RAISE LP IGNORE RP",
 /* 244 */ "expr ::= RAISE LP raisetype COMMA nm RP",
 /* 245 */ "raisetype ::= ROLLBACK",
 /* 246 */ "raisetype ::= ABORT",
 /* 247 */ "raisetype ::= FAIL",
 /* 248 */ "cmd ::= DROP TRIGGER ifexists fullname",
 /* 249 */ "cmd ::= ATTACH database_kw_opt expr AS expr key_opt",
 /* 250 */ "cmd ::= DETACH database_kw_opt expr",
 /* 251 */ "key_opt ::=",
 /* 252 */ "key_opt ::= KEY expr",
 /* 253 */ "cmd ::= REINDEX",
 /* 254 */ "cmd ::= REINDEX nm dbnm",
 /* 255 */ "cmd ::= ANALYZE",
 /* 256 */ "cmd ::= ANALYZE nm dbnm",
 /* 257 */ "cmd ::= ALTER TABLE fullname RENAME TO nm",
 /* 258 */ "cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist",
 /* 259 */ "add_column_fullname ::= fullname",
 /* 260 */ "cmd ::= create_vtab",
 /* 261 */ "cmd ::= create_vtab LP vtabarglist RP",
 /* 262 */ "create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm",
 /* 263 */ "vtabarg ::=",
 /* 264 */ "vtabargtoken ::= ANY",
 /* 265 */ "vtabargtoken ::= lp anylist RP",
 /* 266 */ "lp ::= LP",
 /* 267 */ "with ::=",
 /* 268 */ "with ::= WITH wqlist",
 /* 269 */ "with ::= WITH RECURSIVE wqlist",
 /* 270 */ "wqlist ::= nm eidlist_opt AS LP select RP",
 /* 271 */ "wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP",
 /* 272 */ "input ::= cmdlist",
 /* 273 */ "cmdlist ::= cmdlist ecmd",
 /* 274 */ "cmdlist ::= ecmd",
 /* 275 */ "ecmd ::= SEMI",
 /* 276 */ "ecmd ::= explain cmdx SEMI",
 /* 277 */ "explain ::=",
 /* 278 */ "trans_opt ::=",
 /* 279 */ "trans_opt ::= TRANSACTION",
 /* 280 */ "trans_opt ::= TRANSACTION nm",
 /* 281 */ "savepoint_opt ::= SAVEPOINT",
 /* 282 */ "savepoint_opt ::=",
 /* 283 */ "cmd ::= create_table create_table_args",
 /* 284 */ "columnlist ::= columnlist COMMA columnname carglist",
 /* 285 */ "columnlist ::= columnname carglist",
 /* 286 */ "nm ::= ID|INDEXED",
 /* 287 */ "nm ::= STRING",
 /* 288 */ "nm ::= JOIN_KW",
 /* 289 */ "typetoken ::= typename",
 /* 290 */ "typename ::= ID|STRING",
 /* 291 */ "signed ::= plus_num",
 /* 292 */ "signed ::= minus_num",
 /* 293 */ "carglist ::= carglist ccons",
 /* 294 */ "carglist ::=",
 /* 295 */ "ccons ::= NULL onconf",
 /* 296 */ "conslist_opt ::= COMMA conslist",
 /* 297 */ "conslist ::= conslist tconscomma tcons",
 /* 298 */ "conslist ::= tcons",
 /* 299 */ "tconscomma ::=",
 /* 300 */ "defer_subclause_opt ::= defer_subclause",
 /* 301 */ "resolvetype ::= raisetype",
 /* 302 */ "selectnowith ::= oneselect",
 /* 303 */ "oneselect ::= values",
 /* 304 */ "sclp ::= selcollist COMMA",
 /* 305 */ "as ::= ID|STRING",
 /* 306 */ "expr ::= term",
 /* 307 */ "likeop ::= LIKE_KW|MATCH",
 /* 308 */ "exprlist ::= nexprlist",
 /* 309 */ "nmnum ::= plus_num",
 /* 310 */ "nmnum ::= nm",
 /* 311 */ "nmnum ::= ON",
 /* 312 */ "nmnum ::= DELETE",
 /* 313 */ "nmnum ::= DEFAULT",
 /* 314 */ "plus_num ::= INTEGER|FLOAT",
 /* 315 */ "foreach_clause ::=",
 /* 316 */ "foreach_clause ::= FOR EACH ROW",
 /* 317 */ "trnm ::= nm",
 /* 318 */ "tridxby ::=",
 /* 319 */ "database_kw_opt ::= DATABASE",
 /* 320 */ "database_kw_opt ::=",
 /* 321 */ "kwcolumn_opt ::=",
 /* 322 */ "kwcolumn_opt ::= COLUMNKW",
 /* 323 */ "vtabarglist ::= vtabarg",
 /* 324 */ "vtabarglist ::= vtabarglist COMMA vtabarg",
 /* 325 */ "vtabarg ::= vtabarg vtabargtoken",
 /* 326 */ "anylist ::=",
 /* 327 */ "anylist ::= anylist LP anylist RP",
 /* 328 */ "anylist ::= anylist ANY",
};
#endif /* NDEBUG */


#if YYSTACKDEPTH<=0
/*
** Try to increase the size of the parser stack.  Return the number
................................................................................
    **
    ** Note: during a reduce, the only symbols destroyed are those
    ** which appear on the RHS of the rule, but which are *not* used
    ** inside the C code.
    */
/********* Begin destructor definitions ***************************************/
    case 163: /* select */
    case 194: /* selectnowith */
    case 195: /* oneselect */
    case 206: /* values */
{
sqlite3SelectDelete(pParse->db, (yypminor->yy243));
}
      break;
    case 172: /* term */
    case 173: /* expr */







{
sqlite3ExprDelete(pParse->db, (yypminor->yy190).pExpr);
}
      break;
    case 177: /* eidlist_opt */
    case 186: /* sortlist */
    case 187: /* eidlist */
    case 199: /* selcollist */
    case 202: /* groupby_opt */
    case 204: /* orderby_opt */
    case 207: /* nexprlist */
    case 208: /* exprlist */
    case 209: /* sclp */
    case 218: /* setlist */
    case 224: /* paren_exprlist */
    case 226: /* case_exprlist */
{
sqlite3ExprListDelete(pParse->db, (yypminor->yy148));
}
      break;
    case 193: /* fullname */
    case 200: /* from */
    case 211: /* seltablist */
    case 212: /* stl_prefix */
{
sqlite3SrcListDelete(pParse->db, (yypminor->yy185));
}
      break;
    case 196: /* with */
    case 250: /* wqlist */
{
sqlite3WithDelete(pParse->db, (yypminor->yy285));
}
      break;
    case 201: /* where_opt */
    case 203: /* having_opt */
    case 215: /* on_opt */
    case 225: /* case_operand */
    case 227: /* case_else */
    case 236: /* when_clause */
    case 241: /* key_opt */
{
sqlite3ExprDelete(pParse->db, (yypminor->yy72));
}
      break;
    case 216: /* using_opt */
    case 217: /* idlist */
    case 220: /* idlist_opt */
{
sqlite3IdListDelete(pParse->db, (yypminor->yy254));
}
      break;
    case 232: /* trigger_cmd_list */
    case 237: /* trigger_cmd */
{
sqlite3DeleteTriggerStep(pParse->db, (yypminor->yy145));
}
      break;
    case 234: /* trigger_event */
{
sqlite3IdListDelete(pParse->db, (yypminor->yy332).b);
}
      break;
/********* End destructor definitions *****************************************/
    default:  break;   /* If no destructor action specified: do nothing */
  }
}

................................................................................
#ifdef YYTRACKMAXSTACKDEPTH
SQLITE_PRIVATE int sqlite3ParserStackPeak(void *p){
  yyParser *pParser = (yyParser*)p;
  return pParser->yyhwm;
}
#endif






































/*
** Find the appropriate action for a parser given the terminal
** look-ahead token iLookAhead.
*/
static unsigned int yy_find_shift_action(
  yyParser *pParser,        /* The parser */
  YYCODETYPE iLookAhead     /* The look-ahead token */
){
  int i;
  int stateno = pParser->yytos->stateno;
 
  if( stateno>=YY_MIN_REDUCE ) return stateno;
  assert( stateno <= YY_SHIFT_COUNT );



  do{
    i = yy_shift_ofst[stateno];

    assert( iLookAhead!=YYNOCODE );

    i += iLookAhead;
    if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){
#ifdef YYFALLBACK
      YYCODETYPE iFallback;            /* Fallback token */
      if( iLookAhead<sizeof(yyFallback)/sizeof(yyFallback[0])
             && (iFallback = yyFallback[iLookAhead])!=0 ){
#ifndef NDEBUG
        if( yyTraceFILE ){
          fprintf(yyTraceFILE, "%sFALLBACK %s => %s\n",
................................................................................
  if( stateno>YY_REDUCE_COUNT ){
    return yy_default[stateno];
  }
#else
  assert( stateno<=YY_REDUCE_COUNT );
#endif
  i = yy_reduce_ofst[stateno];
  assert( i!=YY_REDUCE_USE_DFLT );
  assert( iLookAhead!=YYNOCODE );
  i += iLookAhead;
#ifdef YYERRORSYMBOL
  if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){
    return yy_default[stateno];
  }
#else
................................................................................
   sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument var */
}

/*
** Print tracing information for a SHIFT action
*/
#ifndef NDEBUG
static void yyTraceShift(yyParser *yypParser, int yyNewState){
  if( yyTraceFILE ){
    if( yyNewState<YYNSTATE ){
      fprintf(yyTraceFILE,"%sShift '%s', go to state %d\n",
         yyTracePrompt,yyTokenName[yypParser->yytos->major],
         yyNewState);
    }else{
      fprintf(yyTraceFILE,"%sShift '%s'\n",
         yyTracePrompt,yyTokenName[yypParser->yytos->major]);

    }
  }
}
#else
# define yyTraceShift(X,Y)
#endif

/*
** Perform a shift action.
*/
static void yy_shift(
  yyParser *yypParser,          /* The parser to be shifted */
................................................................................
  if( yyNewState > YY_MAX_SHIFT ){
    yyNewState += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE;
  }
  yytos = yypParser->yytos;
  yytos->stateno = (YYACTIONTYPE)yyNewState;
  yytos->major = (YYCODETYPE)yyMajor;
  yytos->minor.yy0 = yyMinor;
  yyTraceShift(yypParser, yyNewState);
}

/* The following table contains information about every rule that
** is used during the reduce.
*/
static const struct {
  YYCODETYPE lhs;       /* Symbol on the left-hand side of the rule */
  signed char nrhs;     /* Negative of the number of RHS symbols in the rule */
} yyRuleInfo[] = {
  { 147, -1 },
  { 147, -3 },
  { 148, -1 },
  { 149, -3 },
  { 150, 0 },
  { 150, -1 },
  { 150, -1 },
  { 150, -1 },
  { 149, -2 },
  { 149, -2 },
  { 149, -2 },
  { 149, -3 },
  { 149, -5 },
  { 154, -6 },
  { 156, -1 },
  { 158, 0 },
  { 158, -3 },
  { 157, -1 },
  { 157, 0 },
  { 155, -5 },
  { 155, -2 },
  { 162, 0 },
  { 162, -2 },
  { 164, -2 },
  { 166, 0 },
  { 166, -4 },
  { 166, -6 },
  { 167, -2 },
  { 171, -2 },
  { 171, -2 },
  { 171, -4 },
  { 171, -3 },
  { 171, -3 },
  { 171, -2 },
  { 171, -3 },
  { 171, -5 },
  { 171, -2 },
  { 171, -4 },
  { 171, -4 },
  { 171, -1 },
  { 171, -2 },
  { 176, 0 },
  { 176, -1 },
  { 178, 0 },
  { 178, -2 },
  { 180, -2 },
  { 180, -3 },
  { 180, -3 },
  { 180, -3 },
  { 181, -2 },
  { 181, -2 },
  { 181, -1 },
  { 181, -1 },
  { 181, -2 },
  { 179, -3 },
  { 179, -2 },
  { 182, 0 },
  { 182, -2 },
  { 182, -2 },
  { 161, 0 },
  { 184, -1 },
  { 185, -2 },
  { 185, -7 },
  { 185, -5 },
  { 185, -5 },
  { 185, -10 },
  { 188, 0 },
  { 174, 0 },
  { 174, -3 },
  { 189, 0 },
  { 189, -2 },
  { 190, -1 },
  { 190, -1 },
  { 149, -4 },
  { 192, -2 },
  { 192, 0 },
  { 149, -9 },
  { 149, -4 },
  { 149, -1 },
  { 163, -2 },
  { 194, -3 },
  { 197, -1 },
  { 197, -2 },
  { 197, -1 },
  { 195, -9 },
  { 206, -4 },
  { 206, -5 },
  { 198, -1 },
  { 198, -1 },
  { 198, 0 },
  { 209, 0 },
  { 199, -3 },
  { 199, -2 },
  { 199, -4 },
  { 210, -2 },
  { 210, 0 },
  { 200, 0 },
  { 200, -2 },
  { 212, -2 },
  { 212, 0 },
  { 211, -7 },
  { 211, -9 },
  { 211, -7 },
  { 211, -7 },
  { 159, 0 },
  { 159, -2 },
  { 193, -2 },
  { 213, -1 },
  { 213, -2 },
  { 213, -3 },
  { 213, -4 },
  { 215, -2 },
  { 215, 0 },
  { 214, 0 },
  { 214, -3 },
  { 214, -2 },
  { 216, -4 },
  { 216, 0 },
  { 204, 0 },
  { 204, -3 },
  { 186, -4 },
  { 186, -2 },
  { 175, -1 },
  { 175, -1 },
  { 175, 0 },
  { 202, 0 },
  { 202, -3 },
  { 203, 0 },
  { 203, -2 },
  { 205, 0 },
  { 205, -2 },
  { 205, -4 },
  { 205, -4 },
  { 149, -6 },
  { 201, 0 },
  { 201, -2 },
  { 149, -8 },
  { 218, -5 },
  { 218, -7 },
  { 218, -3 },
  { 218, -5 },
  { 149, -6 },
  { 149, -7 },
  { 219, -2 },
  { 219, -1 },
  { 220, 0 },
  { 220, -3 },
  { 217, -3 },
  { 217, -1 },
  { 173, -3 },
  { 173, -1 },
  { 173, -1 },
  { 173, -3 },
  { 173, -5 },
  { 172, -1 },
  { 172, -1 },
  { 172, -1 },
  { 173, -1 },
  { 173, -3 },
  { 173, -6 },
  { 173, -5 },
  { 173, -4 },
  { 172, -1 },
  { 173, -5 },
  { 173, -3 },
  { 173, -3 },
  { 173, -3 },
  { 173, -3 },
  { 173, -3 },
  { 173, -3 },
  { 173, -3 },
  { 173, -3 },
  { 221, -2 },
  { 173, -3 },
  { 173, -5 },
  { 173, -2 },
  { 173, -3 },
  { 173, -3 },
  { 173, -4 },
  { 173, -2 },
  { 173, -2 },
  { 173, -2 },
  { 173, -2 },
  { 222, -1 },
  { 222, -2 },
  { 173, -5 },
  { 223, -1 },
  { 223, -2 },
  { 173, -5 },
  { 173, -3 },
  { 173, -5 },
  { 173, -5 },
  { 173, -4 },
  { 173, -5 },
  { 226, -5 },
  { 226, -4 },
  { 227, -2 },
  { 227, 0 },
  { 225, -1 },
  { 225, 0 },
  { 208, 0 },
  { 207, -3 },
  { 207, -1 },
  { 224, 0 },
  { 224, -3 },
  { 149, -12 },
  { 228, -1 },
  { 228, 0 },
  { 177, 0 },
  { 177, -3 },
  { 187, -5 },
  { 187, -3 },
  { 229, 0 },
  { 229, -2 },
  { 149, -4 },
  { 149, -1 },
  { 149, -2 },
  { 149, -3 },
  { 149, -5 },
  { 149, -6 },
  { 149, -5 },
  { 149, -6 },
  { 169, -2 },
  { 170, -2 },
  { 149, -5 },
  { 231, -11 },
  { 233, -1 },
  { 233, -2 },
  { 233, 0 },
  { 234, -1 },
  { 234, -1 },
  { 234, -3 },
  { 236, 0 },
  { 236, -2 },
  { 232, -3 },
  { 232, -2 },
  { 238, -3 },
  { 239, -3 },
  { 239, -2 },
  { 237, -7 },
  { 237, -5 },
  { 237, -5 },
  { 237, -1 },
  { 173, -4 },
  { 173, -6 },
  { 191, -1 },
  { 191, -1 },
  { 191, -1 },
  { 149, -4 },
  { 149, -6 },
  { 149, -3 },
  { 241, 0 },
  { 241, -2 },
  { 149, -1 },
  { 149, -3 },
  { 149, -1 },
  { 149, -3 },
  { 149, -6 },
  { 149, -7 },
  { 242, -1 },
  { 149, -1 },
  { 149, -4 },
  { 244, -8 },
  { 246, 0 },
  { 247, -1 },
  { 247, -3 },
  { 248, -1 },
  { 196, 0 },
  { 196, -2 },
  { 196, -3 },
  { 250, -6 },
  { 250, -8 },
  { 144, -1 },
  { 145, -2 },
  { 145, -1 },
  { 146, -1 },
  { 146, -3 },
  { 147, 0 },
  { 151, 0 },
  { 151, -1 },
  { 151, -2 },
  { 153, -1 },
  { 153, 0 },
  { 149, -2 },
  { 160, -4 },
  { 160, -2 },
  { 152, -1 },
  { 152, -1 },
  { 152, -1 },
  { 166, -1 },
  { 167, -1 },
  { 168, -1 },
  { 168, -1 },
  { 165, -2 },
  { 165, 0 },
  { 171, -2 },
  { 161, -2 },
  { 183, -3 },
  { 183, -1 },
  { 184, 0 },
  { 188, -1 },
  { 190, -1 },
  { 194, -1 },
  { 195, -1 },
  { 209, -2 },
  { 210, -1 },
  { 173, -1 },
  { 221, -1 },
  { 208, -1 },
  { 230, -1 },
  { 230, -1 },
  { 230, -1 },
  { 230, -1 },
  { 230, -1 },
  { 169, -1 },
  { 235, 0 },
  { 235, -3 },
  { 238, -1 },
  { 239, 0 },
  { 240, -1 },
  { 240, 0 },
  { 243, 0 },
  { 243, -1 },
  { 245, -1 },
  { 245, -3 },
  { 246, -2 },
  { 249, 0 },
  { 249, -4 },
  { 249, -2 },
};

static void yy_accept(yyParser*);  /* Forward Declaration */

/*
** Perform a reduce action and the shift that must immediately
** follow the reduce.







*/
static void yy_reduce(
  yyParser *yypParser,         /* The parser */
  unsigned int yyruleno        /* Number of the rule by which to reduce */


){
  int yygoto;                     /* The next state */
  int yyact;                      /* The next action */
  yyStackEntry *yymsp;            /* The top of the parser's stack */
  int yysize;                     /* Amount to pop the stack */
  sqlite3ParserARG_FETCH;
  yymsp = yypParser->yytos;
#ifndef NDEBUG
  if( yyTraceFILE && yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ){
    yysize = yyRuleInfo[yyruleno].nrhs;

    fprintf(yyTraceFILE, "%sReduce [%s], go to state %d.\n", yyTracePrompt,

      yyRuleName[yyruleno], yymsp[yysize].stateno);




  }
#endif /* NDEBUG */

  /* Check that the stack is large enough to grow by a single entry
  ** if the RHS of the rule is empty.  This ensures that there is room
  ** enough on the stack to push the LHS value */
  if( yyRuleInfo[yyruleno].nrhs==0 ){
................................................................................
      case 1: /* explain ::= EXPLAIN QUERY PLAN */
{ pParse->explain = 2; }
        break;
      case 2: /* cmdx ::= cmd */
{ sqlite3FinishCoding(pParse); }
        break;
      case 3: /* cmd ::= BEGIN transtype trans_opt */
{sqlite3BeginTransaction(pParse, yymsp[-1].minor.yy194);}
        break;
      case 4: /* transtype ::= */
{yymsp[1].minor.yy194 = TK_DEFERRED;}
        break;
      case 5: /* transtype ::= DEFERRED */
      case 6: /* transtype ::= IMMEDIATE */ yytestcase(yyruleno==6);
      case 7: /* transtype ::= EXCLUSIVE */ yytestcase(yyruleno==7);
{yymsp[0].minor.yy194 = yymsp[0].major; /*A-overwrites-X*/}
        break;
      case 8: /* cmd ::= COMMIT|END trans_opt */
      case 9: /* cmd ::= ROLLBACK trans_opt */ yytestcase(yyruleno==9);
{sqlite3EndTransaction(pParse,yymsp[-1].major);}
        break;
      case 10: /* cmd ::= SAVEPOINT nm */
{
................................................................................
      case 12: /* cmd ::= ROLLBACK trans_opt TO savepoint_opt nm */
{
  sqlite3Savepoint(pParse, SAVEPOINT_ROLLBACK, &yymsp[0].minor.yy0);
}
        break;
      case 13: /* create_table ::= createkw temp TABLE ifnotexists nm dbnm */
{
   sqlite3StartTable(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,yymsp[-4].minor.yy194,0,0,yymsp[-2].minor.yy194);
}
        break;
      case 14: /* createkw ::= CREATE */
{disableLookaside(pParse);}
        break;
      case 15: /* ifnotexists ::= */
      case 18: /* temp ::= */ yytestcase(yyruleno==18);
      case 21: /* table_options ::= */ yytestcase(yyruleno==21);
      case 41: /* autoinc ::= */ yytestcase(yyruleno==41);
      case 56: /* init_deferred_pred_opt ::= */ yytestcase(yyruleno==56);
      case 66: /* defer_subclause_opt ::= */ yytestcase(yyruleno==66);
      case 75: /* ifexists ::= */ yytestcase(yyruleno==75);
      case 89: /* distinct ::= */ yytestcase(yyruleno==89);
      case 212: /* collate ::= */ yytestcase(yyruleno==212);
{yymsp[1].minor.yy194 = 0;}
        break;
      case 16: /* ifnotexists ::= IF NOT EXISTS */
{yymsp[-2].minor.yy194 = 1;}
        break;
      case 17: /* temp ::= TEMP */
      case 42: /* autoinc ::= AUTOINCR */ yytestcase(yyruleno==42);
{yymsp[0].minor.yy194 = 1;}
        break;
      case 19: /* create_table_args ::= LP columnlist conslist_opt RP table_options */
{
  sqlite3EndTable(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,yymsp[0].minor.yy194,0);
}
        break;
      case 20: /* create_table_args ::= AS select */
{
  sqlite3EndTable(pParse,0,0,0,yymsp[0].minor.yy243);
  sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy243);
}
        break;
      case 22: /* table_options ::= WITHOUT nm */
{
  if( yymsp[0].minor.yy0.n==5 && sqlite3_strnicmp(yymsp[0].minor.yy0.z,"rowid",5)==0 ){
    yymsp[-1].minor.yy194 = TF_WithoutRowid | TF_NoVisibleRowid;
  }else{
    yymsp[-1].minor.yy194 = 0;
    sqlite3ErrorMsg(pParse, "unknown table option: %.*s", yymsp[0].minor.yy0.n, yymsp[0].minor.yy0.z);
  }
}
        break;
      case 23: /* columnname ::= nm typetoken */
{sqlite3AddColumn(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0);}
        break;
      case 24: /* typetoken ::= */
      case 59: /* conslist_opt ::= */ yytestcase(yyruleno==59);
      case 95: /* as ::= */ yytestcase(yyruleno==95);
{yymsp[1].minor.yy0.n = 0; yymsp[1].minor.yy0.z = 0;}
        break;
      case 25: /* typetoken ::= typename LP signed RP */
{
  yymsp[-3].minor.yy0.n = (int)(&yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n] - yymsp[-3].minor.yy0.z);
}
        break;
................................................................................
{
  yymsp[-5].minor.yy0.n = (int)(&yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n] - yymsp[-5].minor.yy0.z);
}
        break;
      case 27: /* typename ::= typename ID|STRING */
{yymsp[-1].minor.yy0.n=yymsp[0].minor.yy0.n+(int)(yymsp[0].minor.yy0.z-yymsp[-1].minor.yy0.z);}
        break;






      case 28: /* ccons ::= CONSTRAINT nm */
      case 61: /* tcons ::= CONSTRAINT nm */ yytestcase(yyruleno==61);
{pParse->constraintName = yymsp[0].minor.yy0;}
        break;
      case 29: /* ccons ::= DEFAULT term */


      case 31: /* ccons ::= DEFAULT PLUS term */ yytestcase(yyruleno==31);
{sqlite3AddDefaultValue(pParse,&yymsp[0].minor.yy190);}
        break;
      case 30: /* ccons ::= DEFAULT LP expr RP */
{sqlite3AddDefaultValue(pParse,&yymsp[-1].minor.yy190);}
        break;
      case 32: /* ccons ::= DEFAULT MINUS term */
{
  ExprSpan v;
  v.pExpr = sqlite3PExpr(pParse, TK_UMINUS, yymsp[0].minor.yy190.pExpr, 0);
  v.zStart = yymsp[-1].minor.yy0.z;
  v.zEnd = yymsp[0].minor.yy190.zEnd;
  sqlite3AddDefaultValue(pParse,&v);
}
        break;
      case 33: /* ccons ::= DEFAULT ID|INDEXED */
{
  ExprSpan v;
  spanExpr(&v, pParse, TK_STRING, yymsp[0].minor.yy0);
  sqlite3AddDefaultValue(pParse,&v);
}
        break;
      case 34: /* ccons ::= NOT NULL onconf */
{sqlite3AddNotNull(pParse, yymsp[0].minor.yy194);}
        break;
      case 35: /* ccons ::= PRIMARY KEY sortorder onconf autoinc */
{sqlite3AddPrimaryKey(pParse,0,yymsp[-1].minor.yy194,yymsp[0].minor.yy194,yymsp[-2].minor.yy194);}
        break;
      case 36: /* ccons ::= UNIQUE onconf */
{sqlite3CreateIndex(pParse,0,0,0,0,yymsp[0].minor.yy194,0,0,0,0,
                                   SQLITE_IDXTYPE_UNIQUE);}
        break;
      case 37: /* ccons ::= CHECK LP expr RP */
{sqlite3AddCheckConstraint(pParse,yymsp[-1].minor.yy190.pExpr);}
        break;
      case 38: /* ccons ::= REFERENCES nm eidlist_opt refargs */
{sqlite3CreateForeignKey(pParse,0,&yymsp[-2].minor.yy0,yymsp[-1].minor.yy148,yymsp[0].minor.yy194);}
        break;
      case 39: /* ccons ::= defer_subclause */
{sqlite3DeferForeignKey(pParse,yymsp[0].minor.yy194);}
        break;
      case 40: /* ccons ::= COLLATE ID|STRING */
{sqlite3AddCollateType(pParse, &yymsp[0].minor.yy0);}
        break;
      case 43: /* refargs ::= */
{ yymsp[1].minor.yy194 = OE_None*0x0101; /* EV: R-19803-45884 */}
        break;
      case 44: /* refargs ::= refargs refarg */
{ yymsp[-1].minor.yy194 = (yymsp[-1].minor.yy194 & ~yymsp[0].minor.yy497.mask) | yymsp[0].minor.yy497.value; }

        break;
      case 45: /* refarg ::= MATCH nm */
{ yymsp[-1].minor.yy497.value = 0;     yymsp[-1].minor.yy497.mask = 0x000000; }
        break;
      case 46: /* refarg ::= ON INSERT refact */
{ yymsp[-2].minor.yy497.value = 0;     yymsp[-2].minor.yy497.mask = 0x000000; }
        break;
      case 47: /* refarg ::= ON DELETE refact */
{ yymsp[-2].minor.yy497.value = yymsp[0].minor.yy194;     yymsp[-2].minor.yy497.mask = 0x0000ff; }

        break;
      case 48: /* refarg ::= ON UPDATE refact */
{ yymsp[-2].minor.yy497.value = yymsp[0].minor.yy194<<8;  yymsp[-2].minor.yy497.mask = 0x00ff00; }

        break;
      case 49: /* refact ::= SET NULL */
{ yymsp[-1].minor.yy194 = OE_SetNull;  /* EV: R-33326-45252 */}
        break;
      case 50: /* refact ::= SET DEFAULT */
{ yymsp[-1].minor.yy194 = OE_SetDflt;  /* EV: R-33326-45252 */}
        break;
      case 51: /* refact ::= CASCADE */
{ yymsp[0].minor.yy194 = OE_Cascade;  /* EV: R-33326-45252 */}
        break;
      case 52: /* refact ::= RESTRICT */
{ yymsp[0].minor.yy194 = OE_Restrict; /* EV: R-33326-45252 */}
        break;
      case 53: /* refact ::= NO ACTION */
{ yymsp[-1].minor.yy194 = OE_None;     /* EV: R-33326-45252 */}
        break;
      case 54: /* defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */
{yymsp[-2].minor.yy194 = 0;}
        break;
      case 55: /* defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
      case 70: /* orconf ::= OR resolvetype */ yytestcase(yyruleno==70);
      case 143: /* insert_cmd ::= INSERT orconf */ yytestcase(yyruleno==143);
{yymsp[-1].minor.yy194 = yymsp[0].minor.yy194;}
        break;
      case 57: /* init_deferred_pred_opt ::= INITIALLY DEFERRED */
      case 74: /* ifexists ::= IF EXISTS */ yytestcase(yyruleno==74);
      case 184: /* between_op ::= NOT BETWEEN */ yytestcase(yyruleno==184);
      case 187: /* in_op ::= NOT IN */ yytestcase(yyruleno==187);
      case 213: /* collate ::= COLLATE ID|STRING */ yytestcase(yyruleno==213);
{yymsp[-1].minor.yy194 = 1;}
        break;
      case 58: /* init_deferred_pred_opt ::= INITIALLY IMMEDIATE */
{yymsp[-1].minor.yy194 = 0;}
        break;
      case 60: /* tconscomma ::= COMMA */
{pParse->constraintName.n = 0;}
        break;
      case 62: /* tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */
{sqlite3AddPrimaryKey(pParse,yymsp[-3].minor.yy148,yymsp[0].minor.yy194,yymsp[-2].minor.yy194,0);}
        break;
      case 63: /* tcons ::= UNIQUE LP sortlist RP onconf */
{sqlite3CreateIndex(pParse,0,0,0,yymsp[-2].minor.yy148,yymsp[0].minor.yy194,0,0,0,0,
                                       SQLITE_IDXTYPE_UNIQUE);}
        break;
      case 64: /* tcons ::= CHECK LP expr RP onconf */
{sqlite3AddCheckConstraint(pParse,yymsp[-2].minor.yy190.pExpr);}
        break;
      case 65: /* tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */
{
    sqlite3CreateForeignKey(pParse, yymsp[-6].minor.yy148, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy148, yymsp[-1].minor.yy194);
    sqlite3DeferForeignKey(pParse, yymsp[0].minor.yy194);
}
        break;
      case 67: /* onconf ::= */
      case 69: /* orconf ::= */ yytestcase(yyruleno==69);
{yymsp[1].minor.yy194 = OE_Default;}
        break;
      case 68: /* onconf ::= ON CONFLICT resolvetype */
{yymsp[-2].minor.yy194 = yymsp[0].minor.yy194;}
        break;
      case 71: /* resolvetype ::= IGNORE */
{yymsp[0].minor.yy194 = OE_Ignore;}
        break;
      case 72: /* resolvetype ::= REPLACE */
      case 144: /* insert_cmd ::= REPLACE */ yytestcase(yyruleno==144);
{yymsp[0].minor.yy194 = OE_Replace;}
        break;
      case 73: /* cmd ::= DROP TABLE ifexists fullname */
{
  sqlite3DropTable(pParse, yymsp[0].minor.yy185, 0, yymsp[-1].minor.yy194);
}
        break;
      case 76: /* cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */
{
  sqlite3CreateView(pParse, &yymsp[-8].minor.yy0, &yymsp[-4].minor.yy0, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy148, yymsp[0].minor.yy243, yymsp[-7].minor.yy194, yymsp[-5].minor.yy194);
}
        break;
      case 77: /* cmd ::= DROP VIEW ifexists fullname */
{
  sqlite3DropTable(pParse, yymsp[0].minor.yy185, 1, yymsp[-1].minor.yy194);
}
        break;
      case 78: /* cmd ::= select */
{
  SelectDest dest = {SRT_Output, 0, 0, 0, 0, 0};
  sqlite3Select(pParse, yymsp[0].minor.yy243, &dest);
  sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy243);
}
        break;
      case 79: /* select ::= with selectnowith */
{
  Select *p = yymsp[0].minor.yy243;
  if( p ){
    p->pWith = yymsp[-1].minor.yy285;
    parserDoubleLinkSelect(pParse, p);
  }else{
    sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy285);
  }
  yymsp[-1].minor.yy243 = p; /*A-overwrites-W*/
}
        break;
      case 80: /* selectnowith ::= selectnowith multiselect_op oneselect */
{
  Select *pRhs = yymsp[0].minor.yy243;
  Select *pLhs = yymsp[-2].minor.yy243;
  if( pRhs && pRhs->pPrior ){
    SrcList *pFrom;
    Token x;
    x.n = 0;
    parserDoubleLinkSelect(pParse, pRhs);
    pFrom = sqlite3SrcListAppendFromTerm(pParse,0,0,0,&x,pRhs,0,0);
    pRhs = sqlite3SelectNew(pParse,0,pFrom,0,0,0,0,0,0,0);
  }
  if( pRhs ){
    pRhs->op = (u8)yymsp[-1].minor.yy194;
    pRhs->pPrior = pLhs;
    if( ALWAYS(pLhs) ) pLhs->selFlags &= ~SF_MultiValue;
    pRhs->selFlags &= ~SF_MultiValue;
    if( yymsp[-1].minor.yy194!=TK_ALL ) pParse->hasCompound = 1;
  }else{
    sqlite3SelectDelete(pParse->db, pLhs);
  }
  yymsp[-2].minor.yy243 = pRhs;
}
        break;
      case 81: /* multiselect_op ::= UNION */
      case 83: /* multiselect_op ::= EXCEPT|INTERSECT */ yytestcase(yyruleno==83);
{yymsp[0].minor.yy194 = yymsp[0].major; /*A-overwrites-OP*/}
        break;
      case 82: /* multiselect_op ::= UNION ALL */
{yymsp[-1].minor.yy194 = TK_ALL;}
        break;
      case 84: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */
{
#if SELECTTRACE_ENABLED
  Token s = yymsp[-8].minor.yy0; /*A-overwrites-S*/
#endif
  yymsp[-8].minor.yy243 = sqlite3SelectNew(pParse,yymsp[-6].minor.yy148,yymsp[-5].minor.yy185,yymsp[-4].minor.yy72,yymsp[-3].minor.yy148,yymsp[-2].minor.yy72,yymsp[-1].minor.yy148,yymsp[-7].minor.yy194,yymsp[0].minor.yy354.pLimit,yymsp[0].minor.yy354.pOffset);
#if SELECTTRACE_ENABLED
  /* Populate the Select.zSelName[] string that is used to help with
  ** query planner debugging, to differentiate between multiple Select
  ** objects in a complex query.
  **
  ** If the SELECT keyword is immediately followed by a C-style comment
  ** then extract the first few alphanumeric characters from within that
  ** comment to be the zSelName value.  Otherwise, the label is #N where
  ** is an integer that is incremented with each SELECT statement seen.
  */
  if( yymsp[-8].minor.yy243!=0 ){
    const char *z = s.z+6;
    int i;
    sqlite3_snprintf(sizeof(yymsp[-8].minor.yy243->zSelName), yymsp[-8].minor.yy243->zSelName, "#%d",
                     ++pParse->nSelect);
    while( z[0]==' ' ) z++;
    if( z[0]=='/' && z[1]=='*' ){
      z += 2;
      while( z[0]==' ' ) z++;
      for(i=0; sqlite3Isalnum(z[i]); i++){}
      sqlite3_snprintf(sizeof(yymsp[-8].minor.yy243->zSelName), yymsp[-8].minor.yy243->zSelName, "%.*s", i, z);
    }
  }
#endif /* SELECTRACE_ENABLED */
}
        break;
      case 85: /* values ::= VALUES LP nexprlist RP */
{
  yymsp[-3].minor.yy243 = sqlite3SelectNew(pParse,yymsp[-1].minor.yy148,0,0,0,0,0,SF_Values,0,0);
}
        break;
      case 86: /* values ::= values COMMA LP exprlist RP */
{
  Select *pRight, *pLeft = yymsp[-4].minor.yy243;
  pRight = sqlite3SelectNew(pParse,yymsp[-1].minor.yy148,0,0,0,0,0,SF_Values|SF_MultiValue,0,0);
  if( ALWAYS(pLeft) ) pLeft->selFlags &= ~SF_MultiValue;
  if( pRight ){
    pRight->op = TK_ALL;
    pRight->pPrior = pLeft;
    yymsp[-4].minor.yy243 = pRight;
  }else{
    yymsp[-4].minor.yy243 = pLeft;
  }
}
        break;
      case 87: /* distinct ::= DISTINCT */
{yymsp[0].minor.yy194 = SF_Distinct;}
        break;
      case 88: /* distinct ::= ALL */
{yymsp[0].minor.yy194 = SF_All;}
        break;
      case 90: /* sclp ::= */
      case 118: /* orderby_opt ::= */ yytestcase(yyruleno==118);
      case 125: /* groupby_opt ::= */ yytestcase(yyruleno==125);
      case 200: /* exprlist ::= */ yytestcase(yyruleno==200);
      case 203: /* paren_exprlist ::= */ yytestcase(yyruleno==203);
      case 208: /* eidlist_opt ::= */ yytestcase(yyruleno==208);
{yymsp[1].minor.yy148 = 0;}
        break;
      case 91: /* selcollist ::= sclp expr as */
{
   yymsp[-2].minor.yy148 = sqlite3ExprListAppend(pParse, yymsp[-2].minor.yy148, yymsp[-1].minor.yy190.pExpr);
   if( yymsp[0].minor.yy0.n>0 ) sqlite3ExprListSetName(pParse, yymsp[-2].minor.yy148, &yymsp[0].minor.yy0, 1);
   sqlite3ExprListSetSpan(pParse,yymsp[-2].minor.yy148,&yymsp[-1].minor.yy190);
}
        break;
      case 92: /* selcollist ::= sclp STAR */
{
  Expr *p = sqlite3Expr(pParse->db, TK_ASTERISK, 0);
  yymsp[-1].minor.yy148 = sqlite3ExprListAppend(pParse, yymsp[-1].minor.yy148, p);
}
        break;
      case 93: /* selcollist ::= sclp nm DOT STAR */
{
  Expr *pRight = sqlite3PExpr(pParse, TK_ASTERISK, 0, 0);
  Expr *pLeft = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1);
  Expr *pDot = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight);
  yymsp[-3].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy148, pDot);
}
        break;
      case 94: /* as ::= AS nm */
      case 105: /* dbnm ::= DOT nm */ yytestcase(yyruleno==105);
      case 222: /* plus_num ::= PLUS INTEGER|FLOAT */ yytestcase(yyruleno==222);
      case 223: /* minus_num ::= MINUS INTEGER|FLOAT */ yytestcase(yyruleno==223);
{yymsp[-1].minor.yy0 = yymsp[0].minor.yy0;}
        break;
      case 96: /* from ::= */
{yymsp[1].minor.yy185 = sqlite3DbMallocZero(pParse->db, sizeof(*yymsp[1].minor.yy185));}
        break;
      case 97: /* from ::= FROM seltablist */
{
  yymsp[-1].minor.yy185 = yymsp[0].minor.yy185;
  sqlite3SrcListShiftJoinType(yymsp[-1].minor.yy185);
}
        break;
      case 98: /* stl_prefix ::= seltablist joinop */
{
   if( ALWAYS(yymsp[-1].minor.yy185 && yymsp[-1].minor.yy185->nSrc>0) ) yymsp[-1].minor.yy185->a[yymsp[-1].minor.yy185->nSrc-1].fg.jointype = (u8)yymsp[0].minor.yy194;
}
        break;
      case 99: /* stl_prefix ::= */
{yymsp[1].minor.yy185 = 0;}
        break;
      case 100: /* seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */
{
  yymsp[-6].minor.yy185 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy185,&yymsp[-5].minor.yy0,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,0,yymsp[-1].minor.yy72,yymsp[0].minor.yy254);
  sqlite3SrcListIndexedBy(pParse, yymsp[-6].minor.yy185, &yymsp[-2].minor.yy0);
}
        break;
      case 101: /* seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */
{
  yymsp[-8].minor.yy185 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-8].minor.yy185,&yymsp[-7].minor.yy0,&yymsp[-6].minor.yy0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy72,yymsp[0].minor.yy254);
  sqlite3SrcListFuncArgs(pParse, yymsp[-8].minor.yy185, yymsp[-4].minor.yy148);
}
        break;
      case 102: /* seltablist ::= stl_prefix LP select RP as on_opt using_opt */
{
    yymsp[-6].minor.yy185 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy185,0,0,&yymsp[-2].minor.yy0,yymsp[-4].minor.yy243,yymsp[-1].minor.yy72,yymsp[0].minor.yy254);
  }
        break;
      case 103: /* seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */
{
    if( yymsp[-6].minor.yy185==0 && yymsp[-2].minor.yy0.n==0 && yymsp[-1].minor.yy72==0 && yymsp[0].minor.yy254==0 ){
      yymsp[-6].minor.yy185 = yymsp[-4].minor.yy185;
    }else if( yymsp[-4].minor.yy185->nSrc==1 ){
      yymsp[-6].minor.yy185 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy185,0,0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy72,yymsp[0].minor.yy254);
      if( yymsp[-6].minor.yy185 ){
        struct SrcList_item *pNew = &yymsp[-6].minor.yy185->a[yymsp[-6].minor.yy185->nSrc-1];
        struct SrcList_item *pOld = yymsp[-4].minor.yy185->a;
        pNew->zName = pOld->zName;
        pNew->zDatabase = pOld->zDatabase;
        pNew->pSelect = pOld->pSelect;
        pOld->zName = pOld->zDatabase = 0;
        pOld->pSelect = 0;
      }
      sqlite3SrcListDelete(pParse->db, yymsp[-4].minor.yy185);
    }else{
      Select *pSubquery;
      sqlite3SrcListShiftJoinType(yymsp[-4].minor.yy185);
      pSubquery = sqlite3SelectNew(pParse,0,yymsp[-4].minor.yy185,0,0,0,0,SF_NestedFrom,0,0);
      yymsp[-6].minor.yy185 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy185,0,0,&yymsp[-2].minor.yy0,pSubquery,yymsp[-1].minor.yy72,yymsp[0].minor.yy254);
    }
  }
        break;
      case 104: /* dbnm ::= */
      case 113: /* indexed_opt ::= */ yytestcase(yyruleno==113);
{yymsp[1].minor.yy0.z=0; yymsp[1].minor.yy0.n=0;}
        break;
      case 106: /* fullname ::= nm dbnm */
{yymsp[-1].minor.yy185 = sqlite3SrcListAppend(pParse->db,0,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/}
        break;
      case 107: /* joinop ::= COMMA|JOIN */
{ yymsp[0].minor.yy194 = JT_INNER; }
        break;
      case 108: /* joinop ::= JOIN_KW JOIN */
{yymsp[-1].minor.yy194 = sqlite3JoinType(pParse,&yymsp[-1].minor.yy0,0,0);  /*X-overwrites-A*/}
        break;
      case 109: /* joinop ::= JOIN_KW nm JOIN */
{yymsp[-2].minor.yy194 = sqlite3JoinType(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,0); /*X-overwrites-A*/}
        break;
      case 110: /* joinop ::= JOIN_KW nm nm JOIN */
{yymsp[-3].minor.yy194 = sqlite3JoinType(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0);/*X-overwrites-A*/}
        break;
      case 111: /* on_opt ::= ON expr */
      case 128: /* having_opt ::= HAVING expr */ yytestcase(yyruleno==128);
      case 135: /* where_opt ::= WHERE expr */ yytestcase(yyruleno==135);
      case 196: /* case_else ::= ELSE expr */ yytestcase(yyruleno==196);
{yymsp[-1].minor.yy72 = yymsp[0].minor.yy190.pExpr;}
        break;
      case 112: /* on_opt ::= */
      case 127: /* having_opt ::= */ yytestcase(yyruleno==127);

      case 134: /* where_opt ::= */ yytestcase(yyruleno==134);
      case 197: /* case_else ::= */ yytestcase(yyruleno==197);
      case 199: /* case_operand ::= */ yytestcase(yyruleno==199);
{yymsp[1].minor.yy72 = 0;}
        break;
      case 114: /* indexed_opt ::= INDEXED BY nm */
{yymsp[-2].minor.yy0 = yymsp[0].minor.yy0;}
        break;
      case 115: /* indexed_opt ::= NOT INDEXED */
{yymsp[-1].minor.yy0.z=0; yymsp[-1].minor.yy0.n=1;}
        break;
      case 116: /* using_opt ::= USING LP idlist RP */
{yymsp[-3].minor.yy254 = yymsp[-1].minor.yy254;}
        break;
      case 117: /* using_opt ::= */
      case 145: /* idlist_opt ::= */ yytestcase(yyruleno==145);
{yymsp[1].minor.yy254 = 0;}
        break;
      case 119: /* orderby_opt ::= ORDER BY sortlist */
      case 126: /* groupby_opt ::= GROUP BY nexprlist */ yytestcase(yyruleno==126);
{yymsp[-2].minor.yy148 = yymsp[0].minor.yy148;}
        break;
      case 120: /* sortlist ::= sortlist COMMA expr sortorder */
{
  yymsp[-3].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy148,yymsp[-1].minor.yy190.pExpr);
  sqlite3ExprListSetSortOrder(yymsp[-3].minor.yy148,yymsp[0].minor.yy194);
}
        break;
      case 121: /* sortlist ::= expr sortorder */
{
  yymsp[-1].minor.yy148 = sqlite3ExprListAppend(pParse,0,yymsp[-1].minor.yy190.pExpr); /*A-overwrites-Y*/
  sqlite3ExprListSetSortOrder(yymsp[-1].minor.yy148,yymsp[0].minor.yy194);
}
        break;
      case 122: /* sortorder ::= ASC */
{yymsp[0].minor.yy194 = SQLITE_SO_ASC;}
        break;
      case 123: /* sortorder ::= DESC */
{yymsp[0].minor.yy194 = SQLITE_SO_DESC;}
        break;
      case 124: /* sortorder ::= */
{yymsp[1].minor.yy194 = SQLITE_SO_UNDEFINED;}
        break;
      case 129: /* limit_opt ::= */
{yymsp[1].minor.yy354.pLimit = 0; yymsp[1].minor.yy354.pOffset = 0;}
        break;
      case 130: /* limit_opt ::= LIMIT expr */
{yymsp[-1].minor.yy354.pLimit = yymsp[0].minor.yy190.pExpr; yymsp[-1].minor.yy354.pOffset = 0;}

        break;
      case 131: /* limit_opt ::= LIMIT expr OFFSET expr */
{yymsp[-3].minor.yy354.pLimit = yymsp[-2].minor.yy190.pExpr; yymsp[-3].minor.yy354.pOffset = yymsp[0].minor.yy190.pExpr;}

        break;
      case 132: /* limit_opt ::= LIMIT expr COMMA expr */
{yymsp[-3].minor.yy354.pOffset = yymsp[-2].minor.yy190.pExpr; yymsp[-3].minor.yy354.pLimit = yymsp[0].minor.yy190.pExpr;}

        break;
      case 133: /* cmd ::= with DELETE FROM fullname indexed_opt where_opt */
{
  sqlite3WithPush(pParse, yymsp[-5].minor.yy285, 1);
  sqlite3SrcListIndexedBy(pParse, yymsp[-2].minor.yy185, &yymsp[-1].minor.yy0);
  sqlite3DeleteFrom(pParse,yymsp[-2].minor.yy185,yymsp[0].minor.yy72);
}
        break;
      case 136: /* cmd ::= with UPDATE orconf fullname indexed_opt SET setlist where_opt */
{
  sqlite3WithPush(pParse, yymsp[-7].minor.yy285, 1);
  sqlite3SrcListIndexedBy(pParse, yymsp[-4].minor.yy185, &yymsp[-3].minor.yy0);
  sqlite3ExprListCheckLength(pParse,yymsp[-1].minor.yy148,"set list"); 
  sqlite3Update(pParse,yymsp[-4].minor.yy185,yymsp[-1].minor.yy148,yymsp[0].minor.yy72,yymsp[-5].minor.yy194);

}
        break;
      case 137: /* setlist ::= setlist COMMA nm EQ expr */
{
  yymsp[-4].minor.yy148 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy148, yymsp[0].minor.yy190.pExpr);
  sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy148, &yymsp[-2].minor.yy0, 1);
}
        break;
      case 138: /* setlist ::= setlist COMMA LP idlist RP EQ expr */
{
  yymsp[-6].minor.yy148 = sqlite3ExprListAppendVector(pParse, yymsp[-6].minor.yy148, yymsp[-3].minor.yy254, yymsp[0].minor.yy190.pExpr);
}
        break;
      case 139: /* setlist ::= nm EQ expr */
{
  yylhsminor.yy148 = sqlite3ExprListAppend(pParse, 0, yymsp[0].minor.yy190.pExpr);
  sqlite3ExprListSetName(pParse, yylhsminor.yy148, &yymsp[-2].minor.yy0, 1);
}
  yymsp[-2].minor.yy148 = yylhsminor.yy148;
        break;
      case 140: /* setlist ::= LP idlist RP EQ expr */
{
  yymsp[-4].minor.yy148 = sqlite3ExprListAppendVector(pParse, 0, yymsp[-3].minor.yy254, yymsp[0].minor.yy190.pExpr);
}
        break;
      case 141: /* cmd ::= with insert_cmd INTO fullname idlist_opt select */
{
  sqlite3WithPush(pParse, yymsp[-5].minor.yy285, 1);
  sqlite3Insert(pParse, yymsp[-2].minor.yy185, yymsp[0].minor.yy243, yymsp[-1].minor.yy254, yymsp[-4].minor.yy194);

}
        break;
      case 142: /* cmd ::= with insert_cmd INTO fullname idlist_opt DEFAULT VALUES */
{
  sqlite3WithPush(pParse, yymsp[-6].minor.yy285, 1);
  sqlite3Insert(pParse, yymsp[-3].minor.yy185, 0, yymsp[-2].minor.yy254, yymsp[-5].minor.yy194);
}
        break;
      case 146: /* idlist_opt ::= LP idlist RP */
{yymsp[-2].minor.yy254 = yymsp[-1].minor.yy254;}
        break;
      case 147: /* idlist ::= idlist COMMA nm */
{yymsp[-2].minor.yy254 = sqlite3IdListAppend(pParse->db,yymsp[-2].minor.yy254,&yymsp[0].minor.yy0);}
        break;
      case 148: /* idlist ::= nm */
{yymsp[0].minor.yy254 = sqlite3IdListAppend(pParse->db,0,&yymsp[0].minor.yy0); /*A-overwrites-Y*/}
        break;
      case 149: /* expr ::= LP expr RP */
{spanSet(&yymsp[-2].minor.yy190,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-B*/  yymsp[-2].minor.yy190.pExpr = yymsp[-1].minor.yy190.pExpr;}

        break;
      case 150: /* expr ::= ID|INDEXED */
      case 151: /* expr ::= JOIN_KW */ yytestcase(yyruleno==151);
{spanExpr(&yymsp[0].minor.yy190,pParse,TK_ID,yymsp[0].minor.yy0); /*A-overwrites-X*/}
        break;
      case 152: /* expr ::= nm DOT nm */
{
  Expr *temp1 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1);
  Expr *temp2 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[0].minor.yy0, 1);
  spanSet(&yymsp[-2].minor.yy190,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/
  yymsp[-2].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_DOT, temp1, temp2);
}

        break;
      case 153: /* expr ::= nm DOT nm DOT nm */
{
  Expr *temp1 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-4].minor.yy0, 1);
  Expr *temp2 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1);
  Expr *temp3 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[0].minor.yy0, 1);
  Expr *temp4 = sqlite3PExpr(pParse, TK_DOT, temp2, temp3);
  spanSet(&yymsp[-4].minor.yy190,&yymsp[-4].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/
  yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_DOT, temp1, temp4);
}

        break;
      case 154: /* term ::= NULL|FLOAT|BLOB */
      case 155: /* term ::= STRING */ yytestcase(yyruleno==155);
{spanExpr(&yymsp[0].minor.yy190,pParse,yymsp[0].major,yymsp[0].minor.yy0); /*A-overwrites-X*/}
        break;
      case 156: /* term ::= INTEGER */
{
  yylhsminor.yy190.pExpr = sqlite3ExprAlloc(pParse->db, TK_INTEGER, &yymsp[0].minor.yy0, 1);
  yylhsminor.yy190.zStart = yymsp[0].minor.yy0.z;
  yylhsminor.yy190.zEnd = yymsp[0].minor.yy0.z + yymsp[0].minor.yy0.n;
}
  yymsp[0].minor.yy190 = yylhsminor.yy190;
        break;
      case 157: /* expr ::= VARIABLE */
{
  if( !(yymsp[0].minor.yy0.z[0]=='#' && sqlite3Isdigit(yymsp[0].minor.yy0.z[1])) ){
    u32 n = yymsp[0].minor.yy0.n;
    spanExpr(&yymsp[0].minor.yy190, pParse, TK_VARIABLE, yymsp[0].minor.yy0);
    sqlite3ExprAssignVarNumber(pParse, yymsp[0].minor.yy190.pExpr, n);
  }else{
    /* When doing a nested parse, one can include terms in an expression
    ** that look like this:   #1 #2 ...  These terms refer to registers
    ** in the virtual machine.  #N is the N-th register. */
    Token t = yymsp[0].minor.yy0; /*A-overwrites-X*/
    assert( t.n>=2 );
    spanSet(&yymsp[0].minor.yy190, &t, &t);
    if( pParse->nested==0 ){
      sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &t);
      yymsp[0].minor.yy190.pExpr = 0;
    }else{
      yymsp[0].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_REGISTER, 0, 0);
      if( yymsp[0].minor.yy190.pExpr ) sqlite3GetInt32(&t.z[1], &yymsp[0].minor.yy190.pExpr->iTable);
    }
  }
}
        break;
      case 158: /* expr ::= expr COLLATE ID|STRING */
{
  yymsp[-2].minor.yy190.pExpr = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy190.pExpr, &yymsp[0].minor.yy0, 1);
  yymsp[-2].minor.yy190.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n];
}
        break;
      case 159: /* expr ::= CAST LP expr AS typetoken RP */
{
  spanSet(&yymsp[-5].minor.yy190,&yymsp[-5].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/
  yymsp[-5].minor.yy190.pExpr = sqlite3ExprAlloc(pParse->db, TK_CAST, &yymsp[-1].minor.yy0, 1);
  sqlite3ExprAttachSubtrees(pParse->db, yymsp[-5].minor.yy190.pExpr, yymsp[-3].minor.yy190.pExpr, 0);
}
        break;
      case 160: /* expr ::= ID|INDEXED LP distinct exprlist RP */
{
  if( yymsp[-1].minor.yy148 && yymsp[-1].minor.yy148->nExpr>pParse->db->aLimit[SQLITE_LIMIT_FUNCTION_ARG] ){
    sqlite3ErrorMsg(pParse, "too many arguments on function %T", &yymsp[-4].minor.yy0);
  }
  yylhsminor.yy190.pExpr = sqlite3ExprFunction(pParse, yymsp[-1].minor.yy148, &yymsp[-4].minor.yy0);
  spanSet(&yylhsminor.yy190,&yymsp[-4].minor.yy0,&yymsp[0].minor.yy0);
  if( yymsp[-2].minor.yy194==SF_Distinct && yylhsminor.yy190.pExpr ){
    yylhsminor.yy190.pExpr->flags |= EP_Distinct;
  }
}
  yymsp[-4].minor.yy190 = yylhsminor.yy190;
        break;
      case 161: /* expr ::= ID|INDEXED LP STAR RP */
{
  yylhsminor.yy190.pExpr = sqlite3ExprFunction(pParse, 0, &yymsp[-3].minor.yy0);
  spanSet(&yylhsminor.yy190,&yymsp[-3].minor.yy0,&yymsp[0].minor.yy0);
}
  yymsp[-3].minor.yy190 = yylhsminor.yy190;
        break;
      case 162: /* term ::= CTIME_KW */
{
  yylhsminor.yy190.pExpr = sqlite3ExprFunction(pParse, 0, &yymsp[0].minor.yy0);
  spanSet(&yylhsminor.yy190, &yymsp[0].minor.yy0, &yymsp[0].minor.yy0);
}
  yymsp[0].minor.yy190 = yylhsminor.yy190;
        break;
      case 163: /* expr ::= LP nexprlist COMMA expr RP */
{
  ExprList *pList = sqlite3ExprListAppend(pParse, yymsp[-3].minor.yy148, yymsp[-1].minor.yy190.pExpr);
  yylhsminor.yy190.pExpr = sqlite3PExpr(pParse, TK_VECTOR, 0, 0);
  if( yylhsminor.yy190.pExpr ){

    yylhsminor.yy190.pExpr->x.pList = pList;
    spanSet(&yylhsminor.yy190, &yymsp[-4].minor.yy0, &yymsp[0].minor.yy0);
  }else{
    sqlite3ExprListDelete(pParse->db, pList);
  }
}
  yymsp[-4].minor.yy190 = yylhsminor.yy190;
        break;
      case 164: /* expr ::= expr AND expr */
      case 165: /* expr ::= expr OR expr */ yytestcase(yyruleno==165);
      case 166: /* expr ::= expr LT|GT|GE|LE expr */ yytestcase(yyruleno==166);
      case 167: /* expr ::= expr EQ|NE expr */ yytestcase(yyruleno==167);
      case 168: /* expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ yytestcase(yyruleno==168);
      case 169: /* expr ::= expr PLUS|MINUS expr */ yytestcase(yyruleno==169);
      case 170: /* expr ::= expr STAR|SLASH|REM expr */ yytestcase(yyruleno==170);
      case 171: /* expr ::= expr CONCAT expr */ yytestcase(yyruleno==171);
{spanBinaryExpr(pParse,yymsp[-1].major,&yymsp[-2].minor.yy190,&yymsp[0].minor.yy190);}

        break;
      case 172: /* likeop ::= NOT LIKE_KW|MATCH */
{yymsp[-1].minor.yy0=yymsp[0].minor.yy0; yymsp[-1].minor.yy0.n|=0x80000000; /*yymsp[-1].minor.yy0-overwrite-yymsp[0].minor.yy0*/}
        break;
      case 173: /* expr ::= expr likeop expr */
{
  ExprList *pList;
  int bNot = yymsp[-1].minor.yy0.n & 0x80000000;
  yymsp[-1].minor.yy0.n &= 0x7fffffff;
  pList = sqlite3ExprListAppend(pParse,0, yymsp[0].minor.yy190.pExpr);
  pList = sqlite3ExprListAppend(pParse,pList, yymsp[-2].minor.yy190.pExpr);
  yymsp[-2].minor.yy190.pExpr = sqlite3ExprFunction(pParse, pList, &yymsp[-1].minor.yy0);
  exprNot(pParse, bNot, &yymsp[-2].minor.yy190);
  yymsp[-2].minor.yy190.zEnd = yymsp[0].minor.yy190.zEnd;
  if( yymsp[-2].minor.yy190.pExpr ) yymsp[-2].minor.yy190.pExpr->flags |= EP_InfixFunc;
}
        break;
      case 174: /* expr ::= expr likeop expr ESCAPE expr */
{
  ExprList *pList;
  int bNot = yymsp[-3].minor.yy0.n & 0x80000000;
  yymsp[-3].minor.yy0.n &= 0x7fffffff;
  pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy190.pExpr);
  pList = sqlite3ExprListAppend(pParse,pList, yymsp[-4].minor.yy190.pExpr);
  pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy190.pExpr);
  yymsp[-4].minor.yy190.pExpr = sqlite3ExprFunction(pParse, pList, &yymsp[-3].minor.yy0);

  exprNot(pParse, bNot, &yymsp[-4].minor.yy190);
  yymsp[-4].minor.yy190.zEnd = yymsp[0].minor.yy190.zEnd;
  if( yymsp[-4].minor.yy190.pExpr ) yymsp[-4].minor.yy190.pExpr->flags |= EP_InfixFunc;
}
        break;
      case 175: /* expr ::= expr ISNULL|NOTNULL */
{spanUnaryPostfix(pParse,yymsp[0].major,&yymsp[-1].minor.yy190,&yymsp[0].minor.yy0);}

        break;
      case 176: /* expr ::= expr NOT NULL */
{spanUnaryPostfix(pParse,TK_NOTNULL,&yymsp[-2].minor.yy190,&yymsp[0].minor.yy0);}

        break;
      case 177: /* expr ::= expr IS expr */
{
  spanBinaryExpr(pParse,TK_IS,&yymsp[-2].minor.yy190,&yymsp[0].minor.yy190);

  binaryToUnaryIfNull(pParse, yymsp[0].minor.yy190.pExpr, yymsp[-2].minor.yy190.pExpr, TK_ISNULL);
}
        break;
      case 178: /* expr ::= expr IS NOT expr */
{
  spanBinaryExpr(pParse,TK_ISNOT,&yymsp[-3].minor.yy190,&yymsp[0].minor.yy190);

  binaryToUnaryIfNull(pParse, yymsp[0].minor.yy190.pExpr, yymsp[-3].minor.yy190.pExpr, TK_NOTNULL);
}
        break;
      case 179: /* expr ::= NOT expr */
      case 180: /* expr ::= BITNOT expr */ yytestcase(yyruleno==180);
{spanUnaryPrefix(&yymsp[-1].minor.yy190,pParse,yymsp[-1].major,&yymsp[0].minor.yy190,&yymsp[-1].minor.yy0);/*A-overwrites-B*/}

        break;
      case 181: /* expr ::= MINUS expr */
{spanUnaryPrefix(&yymsp[-1].minor.yy190,pParse,TK_UMINUS,&yymsp[0].minor.yy190,&yymsp[-1].minor.yy0);/*A-overwrites-B*/}

        break;
      case 182: /* expr ::= PLUS expr */
{spanUnaryPrefix(&yymsp[-1].minor.yy190,pParse,TK_UPLUS,&yymsp[0].minor.yy190,&yymsp[-1].minor.yy0);/*A-overwrites-B*/}

        break;
      case 183: /* between_op ::= BETWEEN */
      case 186: /* in_op ::= IN */ yytestcase(yyruleno==186);
{yymsp[0].minor.yy194 = 0;}
        break;
      case 185: /* expr ::= expr between_op expr AND expr */
{
  ExprList *pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy190.pExpr);
  pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy190.pExpr);
  yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_BETWEEN, yymsp[-4].minor.yy190.pExpr, 0);
  if( yymsp[-4].minor.yy190.pExpr ){
    yymsp[-4].minor.yy190.pExpr->x.pList = pList;
  }else{
    sqlite3ExprListDelete(pParse->db, pList);
  } 
  exprNot(pParse, yymsp[-3].minor.yy194, &yymsp[-4].minor.yy190);
  yymsp[-4].minor.yy190.zEnd = yymsp[0].minor.yy190.zEnd;

}
        break;
      case 188: /* expr ::= expr in_op LP exprlist RP */
{
    if( yymsp[-1].minor.yy148==0 ){
      /* Expressions of the form
      **
      **      expr1 IN ()
      **      expr1 NOT IN ()
      **
      ** simplify to constants 0 (false) and 1 (true), respectively,
      ** regardless of the value of expr1.
      */
      sqlite3ExprDelete(pParse->db, yymsp[-4].minor.yy190.pExpr);
      yymsp[-4].minor.yy190.pExpr = sqlite3ExprAlloc(pParse->db, TK_INTEGER,&sqlite3IntTokens[yymsp[-3].minor.yy194],1);
    }else if( yymsp[-1].minor.yy148->nExpr==1 ){
      /* Expressions of the form:
      **
      **      expr1 IN (?1)
      **      expr1 NOT IN (?2)
      **
      ** with exactly one value on the RHS can be simplified to something
      ** like this:
................................................................................
      **      expr1 <> ?2
      **
      ** But, the RHS of the == or <> is marked with the EP_Generic flag
      ** so that it may not contribute to the computation of comparison
      ** affinity or the collating sequence to use for comparison.  Otherwise,
      ** the semantics would be subtly different from IN or NOT IN.
      */
      Expr *pRHS = yymsp[-1].minor.yy148->a[0].pExpr;
      yymsp[-1].minor.yy148->a[0].pExpr = 0;
      sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy148);
      /* pRHS cannot be NULL because a malloc error would have been detected
      ** before now and control would have never reached this point */
      if( ALWAYS(pRHS) ){
        pRHS->flags &= ~EP_Collate;
        pRHS->flags |= EP_Generic;
      }
      yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, yymsp[-3].minor.yy194 ? TK_NE : TK_EQ, yymsp[-4].minor.yy190.pExpr, pRHS);
    }else{
      yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy190.pExpr, 0);
      if( yymsp[-4].minor.yy190.pExpr ){
        yymsp[-4].minor.yy190.pExpr->x.pList = yymsp[-1].minor.yy148;
        sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy190.pExpr);
      }else{
        sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy148);
      }
      exprNot(pParse, yymsp[-3].minor.yy194, &yymsp[-4].minor.yy190);
    }
    yymsp[-4].minor.yy190.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n];
  }
        break;
      case 189: /* expr ::= LP select RP */
{
    spanSet(&yymsp[-2].minor.yy190,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-B*/
    yymsp[-2].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_SELECT, 0, 0);
    sqlite3PExprAddSelect(pParse, yymsp[-2].minor.yy190.pExpr, yymsp[-1].minor.yy243);
  }
        break;
      case 190: /* expr ::= expr in_op LP select RP */
{
    yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy190.pExpr, 0);
    sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy190.pExpr, yymsp[-1].minor.yy243);
    exprNot(pParse, yymsp[-3].minor.yy194, &yymsp[-4].minor.yy190);
    yymsp[-4].minor.yy190.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n];

  }
        break;
      case 191: /* expr ::= expr in_op nm dbnm paren_exprlist */
{
    SrcList *pSrc = sqlite3SrcListAppend(pParse->db, 0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0);
    Select *pSelect = sqlite3SelectNew(pParse, 0,pSrc,0,0,0,0,0,0,0);
    if( yymsp[0].minor.yy148 )  sqlite3SrcListFuncArgs(pParse, pSelect ? pSrc : 0, yymsp[0].minor.yy148);
    yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy190.pExpr, 0);
    sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy190.pExpr, pSelect);
    exprNot(pParse, yymsp[-3].minor.yy194, &yymsp[-4].minor.yy190);
    yymsp[-4].minor.yy190.zEnd = yymsp[-1].minor.yy0.z ? &yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n] : &yymsp[-2].minor.yy0.z[yymsp[-2].minor.yy0.n];

  }
        break;
      case 192: /* expr ::= EXISTS LP select RP */
{
    Expr *p;
    spanSet(&yymsp[-3].minor.yy190,&yymsp[-3].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-B*/
    p = yymsp[-3].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_EXISTS, 0, 0);
    sqlite3PExprAddSelect(pParse, p, yymsp[-1].minor.yy243);
  }
        break;
      case 193: /* expr ::= CASE case_operand case_exprlist case_else END */
{
  spanSet(&yymsp[-4].minor.yy190,&yymsp[-4].minor.yy0,&yymsp[0].minor.yy0);  /*A-overwrites-C*/
  yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_CASE, yymsp[-3].minor.yy72, 0);
  if( yymsp[-4].minor.yy190.pExpr ){
    yymsp[-4].minor.yy190.pExpr->x.pList = yymsp[-1].minor.yy72 ? sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy148,yymsp[-1].minor.yy72) : yymsp[-2].minor.yy148;

    sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy190.pExpr);
  }else{
    sqlite3ExprListDelete(pParse->db, yymsp[-2].minor.yy148);
    sqlite3ExprDelete(pParse->db, yymsp[-1].minor.yy72);
  }
}
        break;
      case 194: /* case_exprlist ::= case_exprlist WHEN expr THEN expr */
{
  yymsp[-4].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy148, yymsp[-2].minor.yy190.pExpr);
  yymsp[-4].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy148, yymsp[0].minor.yy190.pExpr);
}
        break;
      case 195: /* case_exprlist ::= WHEN expr THEN expr */
{
  yymsp[-3].minor.yy148 = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy190.pExpr);
  yymsp[-3].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy148, yymsp[0].minor.yy190.pExpr);
}
        break;
      case 198: /* case_operand ::= expr */
{yymsp[0].minor.yy72 = yymsp[0].minor.yy190.pExpr; /*A-overwrites-X*/}

        break;
      case 201: /* nexprlist ::= nexprlist COMMA expr */
{yymsp[-2].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy148,yymsp[0].minor.yy190.pExpr);}
        break;
      case 202: /* nexprlist ::= expr */
{yymsp[0].minor.yy148 = sqlite3ExprListAppend(pParse,0,yymsp[0].minor.yy190.pExpr); /*A-overwrites-Y*/}
        break;
      case 204: /* paren_exprlist ::= LP exprlist RP */
      case 209: /* eidlist_opt ::= LP eidlist RP */ yytestcase(yyruleno==209);
{yymsp[-2].minor.yy148 = yymsp[-1].minor.yy148;}
        break;
      case 205: /* cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */
{
  sqlite3CreateIndex(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, 
                     sqlite3SrcListAppend(pParse->db,0,&yymsp[-4].minor.yy0,0), yymsp[-2].minor.yy148, yymsp[-10].minor.yy194,
                      &yymsp[-11].minor.yy0, yymsp[0].minor.yy72, SQLITE_SO_ASC, yymsp[-8].minor.yy194, SQLITE_IDXTYPE_APPDEF);
}
        break;
      case 206: /* uniqueflag ::= UNIQUE */
      case 246: /* raisetype ::= ABORT */ yytestcase(yyruleno==246);
{yymsp[0].minor.yy194 = OE_Abort;}
        break;
      case 207: /* uniqueflag ::= */
{yymsp[1].minor.yy194 = OE_None;}
        break;
      case 210: /* eidlist ::= eidlist COMMA nm collate sortorder */
{
  yymsp[-4].minor.yy148 = parserAddExprIdListTerm(pParse, yymsp[-4].minor.yy148, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy194, yymsp[0].minor.yy194);
}
        break;
      case 211: /* eidlist ::= nm collate sortorder */
{
  yymsp[-2].minor.yy148 = parserAddExprIdListTerm(pParse, 0, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy194, yymsp[0].minor.yy194); /*A-overwrites-Y*/
}
        break;
      case 214: /* cmd ::= DROP INDEX ifexists fullname */
{sqlite3DropIndex(pParse, yymsp[0].minor.yy185, yymsp[-1].minor.yy194);}
        break;
      case 215: /* cmd ::= VACUUM */
{sqlite3Vacuum(pParse,0);}
        break;
      case 216: /* cmd ::= VACUUM nm */
{sqlite3Vacuum(pParse,&yymsp[0].minor.yy0);}
        break;
      case 217: /* cmd ::= PRAGMA nm dbnm */
{sqlite3Pragma(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,0,0);}
        break;
      case 218: /* cmd ::= PRAGMA nm dbnm EQ nmnum */
{sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,0);}
        break;
      case 219: /* cmd ::= PRAGMA nm dbnm LP nmnum RP */
{sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,0);}
        break;
      case 220: /* cmd ::= PRAGMA nm dbnm EQ minus_num */
{sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,1);}
        break;
      case 221: /* cmd ::= PRAGMA nm dbnm LP minus_num RP */
{sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,1);}
        break;
      case 224: /* cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */
{
  Token all;
  all.z = yymsp[-3].minor.yy0.z;
  all.n = (int)(yymsp[0].minor.yy0.z - yymsp[-3].minor.yy0.z) + yymsp[0].minor.yy0.n;
  sqlite3FinishTrigger(pParse, yymsp[-1].minor.yy145, &all);
}
        break;
      case 225: /* trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */
{
  sqlite3BeginTrigger(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, yymsp[-5].minor.yy194, yymsp[-4].minor.yy332.a, yymsp[-4].minor.yy332.b, yymsp[-2].minor.yy185, yymsp[0].minor.yy72, yymsp[-10].minor.yy194, yymsp[-8].minor.yy194);
  yymsp[-10].minor.yy0 = (yymsp[-6].minor.yy0.n==0?yymsp[-7].minor.yy0:yymsp[-6].minor.yy0); /*A-overwrites-T*/
}
        break;
      case 226: /* trigger_time ::= BEFORE|AFTER */
{ yymsp[0].minor.yy194 = yymsp[0].major; /*A-overwrites-X*/ }
        break;
      case 227: /* trigger_time ::= INSTEAD OF */
{ yymsp[-1].minor.yy194 = TK_INSTEAD;}
        break;
      case 228: /* trigger_time ::= */
{ yymsp[1].minor.yy194 = TK_BEFORE; }
        break;
      case 229: /* trigger_event ::= DELETE|INSERT */
      case 230: /* trigger_event ::= UPDATE */ yytestcase(yyruleno==230);
{yymsp[0].minor.yy332.a = yymsp[0].major; /*A-overwrites-X*/ yymsp[0].minor.yy332.b = 0;}
        break;
      case 231: /* trigger_event ::= UPDATE OF idlist */
{yymsp[-2].minor.yy332.a = TK_UPDATE; yymsp[-2].minor.yy332.b = yymsp[0].minor.yy254;}
        break;
      case 232: /* when_clause ::= */
      case 251: /* key_opt ::= */ yytestcase(yyruleno==251);
{ yymsp[1].minor.yy72 = 0; }
        break;
      case 233: /* when_clause ::= WHEN expr */
      case 252: /* key_opt ::= KEY expr */ yytestcase(yyruleno==252);
{ yymsp[-1].minor.yy72 = yymsp[0].minor.yy190.pExpr; }
        break;
      case 234: /* trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */
{
  assert( yymsp[-2].minor.yy145!=0 );
  yymsp[-2].minor.yy145->pLast->pNext = yymsp[-1].minor.yy145;
  yymsp[-2].minor.yy145->pLast = yymsp[-1].minor.yy145;
}
        break;
      case 235: /* trigger_cmd_list ::= trigger_cmd SEMI */
{ 
  assert( yymsp[-1].minor.yy145!=0 );
  yymsp[-1].minor.yy145->pLast = yymsp[-1].minor.yy145;
}
        break;
      case 236: /* trnm ::= nm DOT nm */
{
  yymsp[-2].minor.yy0 = yymsp[0].minor.yy0;
  sqlite3ErrorMsg(pParse, 
        "qualified table names are not allowed on INSERT, UPDATE, and DELETE "
        "statements within triggers");
}
        break;
      case 237: /* tridxby ::= INDEXED BY nm */
{
  sqlite3ErrorMsg(pParse,
        "the INDEXED BY clause is not allowed on UPDATE or DELETE statements "
        "within triggers");
}
        break;
      case 238: /* tridxby ::= NOT INDEXED */
{
  sqlite3ErrorMsg(pParse,
        "the NOT INDEXED clause is not allowed on UPDATE or DELETE statements "
        "within triggers");
}
        break;
      case 239: /* trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt */
{yymsp[-6].minor.yy145 = sqlite3TriggerUpdateStep(pParse->db, &yymsp[-4].minor.yy0, yymsp[-1].minor.yy148, yymsp[0].minor.yy72, yymsp[-5].minor.yy194);}

        break;
      case 240: /* trigger_cmd ::= insert_cmd INTO trnm idlist_opt select */
{yymsp[-4].minor.yy145 = sqlite3TriggerInsertStep(pParse->db, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy254, yymsp[0].minor.yy243, yymsp[-4].minor.yy194);/*A-overwrites-R*/}


        break;
      case 241: /* trigger_cmd ::= DELETE FROM trnm tridxby where_opt */
{yymsp[-4].minor.yy145 = sqlite3TriggerDeleteStep(pParse->db, &yymsp[-2].minor.yy0, yymsp[0].minor.yy72);}

        break;
      case 242: /* trigger_cmd ::= select */
{yymsp[0].minor.yy145 = sqlite3TriggerSelectStep(pParse->db, yymsp[0].minor.yy243); /*A-overwrites-X*/}


        break;
      case 243: /* expr ::= RAISE LP IGNORE RP */
{
  spanSet(&yymsp[-3].minor.yy190,&yymsp[-3].minor.yy0,&yymsp[0].minor.yy0);  /*A-overwrites-X*/
  yymsp[-3].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_RAISE, 0, 0); 
  if( yymsp[-3].minor.yy190.pExpr ){
    yymsp[-3].minor.yy190.pExpr->affinity = OE_Ignore;
  }
}
        break;
      case 244: /* expr ::= RAISE LP raisetype COMMA nm RP */
{
  spanSet(&yymsp[-5].minor.yy190,&yymsp[-5].minor.yy0,&yymsp[0].minor.yy0);  /*A-overwrites-X*/
  yymsp[-5].minor.yy190.pExpr = sqlite3ExprAlloc(pParse->db, TK_RAISE, &yymsp[-1].minor.yy0, 1); 
  if( yymsp[-5].minor.yy190.pExpr ) {
    yymsp[-5].minor.yy190.pExpr->affinity = (char)yymsp[-3].minor.yy194;
  }
}
        break;
      case 245: /* raisetype ::= ROLLBACK */
{yymsp[0].minor.yy194 = OE_Rollback;}
        break;
      case 247: /* raisetype ::= FAIL */
{yymsp[0].minor.yy194 = OE_Fail;}
        break;
      case 248: /* cmd ::= DROP TRIGGER ifexists fullname */
{
  sqlite3DropTrigger(pParse,yymsp[0].minor.yy185,yymsp[-1].minor.yy194);
}
        break;
      case 249: /* cmd ::= ATTACH database_kw_opt expr AS expr key_opt */
{
  sqlite3Attach(pParse, yymsp[-3].minor.yy190.pExpr, yymsp[-1].minor.yy190.pExpr, yymsp[0].minor.yy72);
}
        break;
      case 250: /* cmd ::= DETACH database_kw_opt expr */
{
  sqlite3Detach(pParse, yymsp[0].minor.yy190.pExpr);
}
        break;
      case 253: /* cmd ::= REINDEX */
{sqlite3Reindex(pParse, 0, 0);}
        break;
      case 254: /* cmd ::= REINDEX nm dbnm */
{sqlite3Reindex(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);}
        break;
      case 255: /* cmd ::= ANALYZE */
{sqlite3Analyze(pParse, 0, 0);}
        break;
      case 256: /* cmd ::= ANALYZE nm dbnm */
{sqlite3Analyze(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);}
        break;
      case 257: /* cmd ::= ALTER TABLE fullname RENAME TO nm */
{
  sqlite3AlterRenameTable(pParse,yymsp[-3].minor.yy185,&yymsp[0].minor.yy0);
}
        break;
      case 258: /* cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */
{
  yymsp[-1].minor.yy0.n = (int)(pParse->sLastToken.z-yymsp[-1].minor.yy0.z) + pParse->sLastToken.n;
  sqlite3AlterFinishAddColumn(pParse, &yymsp[-1].minor.yy0);
}
        break;
      case 259: /* add_column_fullname ::= fullname */
{
  disableLookaside(pParse);
  sqlite3AlterBeginAddColumn(pParse, yymsp[0].minor.yy185);
}
        break;
      case 260: /* cmd ::= create_vtab */
{sqlite3VtabFinishParse(pParse,0);}
        break;
      case 261: /* cmd ::= create_vtab LP vtabarglist RP */
{sqlite3VtabFinishParse(pParse,&yymsp[0].minor.yy0);}
        break;
      case 262: /* create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */
{
    sqlite3VtabBeginParse(pParse, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0, yymsp[-4].minor.yy194);
}
        break;
      case 263: /* vtabarg ::= */
{sqlite3VtabArgInit(pParse);}
        break;
      case 264: /* vtabargtoken ::= ANY */
      case 265: /* vtabargtoken ::= lp anylist RP */ yytestcase(yyruleno==265);
      case 266: /* lp ::= LP */ yytestcase(yyruleno==266);
{sqlite3VtabArgExtend(pParse,&yymsp[0].minor.yy0);}
        break;
      case 267: /* with ::= */
{yymsp[1].minor.yy285 = 0;}
        break;
      case 268: /* with ::= WITH wqlist */
{ yymsp[-1].minor.yy285 = yymsp[0].minor.yy285; }
        break;
      case 269: /* with ::= WITH RECURSIVE wqlist */
{ yymsp[-2].minor.yy285 = yymsp[0].minor.yy285; }
        break;
      case 270: /* wqlist ::= nm eidlist_opt AS LP select RP */
{
  yymsp[-5].minor.yy285 = sqlite3WithAdd(pParse, 0, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy148, yymsp[-1].minor.yy243); /*A-overwrites-X*/
}
        break;
      case 271: /* wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */
{
  yymsp[-7].minor.yy285 = sqlite3WithAdd(pParse, yymsp[-7].minor.yy285, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy148, yymsp[-1].minor.yy243);
}
        break;
      default:
      /* (272) input ::= cmdlist */ yytestcase(yyruleno==272);
      /* (273) cmdlist ::= cmdlist ecmd */ yytestcase(yyruleno==273);
      /* (274) cmdlist ::= ecmd (OPTIMIZED OUT) */ assert(yyruleno!=274);
      /* (275) ecmd ::= SEMI */ yytestcase(yyruleno==275);
      /* (276) ecmd ::= explain cmdx SEMI */ yytestcase(yyruleno==276);
      /* (277) explain ::= */ yytestcase(yyruleno==277);
      /* (278) trans_opt ::= */ yytestcase(yyruleno==278);
      /* (279) trans_opt ::= TRANSACTION */ yytestcase(yyruleno==279);
      /* (280) trans_opt ::= TRANSACTION nm */ yytestcase(yyruleno==280);
      /* (281) savepoint_opt ::= SAVEPOINT */ yytestcase(yyruleno==281);
      /* (282) savepoint_opt ::= */ yytestcase(yyruleno==282);
      /* (283) cmd ::= create_table create_table_args */ yytestcase(yyruleno==283);
      /* (284) columnlist ::= columnlist COMMA columnname carglist */ yytestcase(yyruleno==284);
      /* (285) columnlist ::= columnname carglist */ yytestcase(yyruleno==285);
      /* (286) nm ::= ID|INDEXED */ yytestcase(yyruleno==286);
      /* (287) nm ::= STRING */ yytestcase(yyruleno==287);
      /* (288) nm ::= JOIN_KW */ yytestcase(yyruleno==288);
      /* (289) typetoken ::= typename */ yytestcase(yyruleno==289);
      /* (290) typename ::= ID|STRING */ yytestcase(yyruleno==290);
      /* (291) signed ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=291);
      /* (292) signed ::= minus_num (OPTIMIZED OUT) */ assert(yyruleno!=292);
      /* (293) carglist ::= carglist ccons */ yytestcase(yyruleno==293);
      /* (294) carglist ::= */ yytestcase(yyruleno==294);
      /* (295) ccons ::= NULL onconf */ yytestcase(yyruleno==295);
      /* (296) conslist_opt ::= COMMA conslist */ yytestcase(yyruleno==296);
      /* (297) conslist ::= conslist tconscomma tcons */ yytestcase(yyruleno==297);
      /* (298) conslist ::= tcons (OPTIMIZED OUT) */ assert(yyruleno!=298);
      /* (299) tconscomma ::= */ yytestcase(yyruleno==299);
      /* (300) defer_subclause_opt ::= defer_subclause (OPTIMIZED OUT) */ assert(yyruleno!=300);
      /* (301) resolvetype ::= raisetype (OPTIMIZED OUT) */ assert(yyruleno!=301);
      /* (302) selectnowith ::= oneselect (OPTIMIZED OUT) */ assert(yyruleno!=302);
      /* (303) oneselect ::= values */ yytestcase(yyruleno==303);
      /* (304) sclp ::= selcollist COMMA */ yytestcase(yyruleno==304);
      /* (305) as ::= ID|STRING */ yytestcase(yyruleno==305);
      /* (306) expr ::= term (OPTIMIZED OUT) */ assert(yyruleno!=306);
      /* (307) likeop ::= LIKE_KW|MATCH */ yytestcase(yyruleno==307);
      /* (308) exprlist ::= nexprlist */ yytestcase(yyruleno==308);
      /* (309) nmnum ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=309);
      /* (310) nmnum ::= nm (OPTIMIZED OUT) */ assert(yyruleno!=310);
      /* (311) nmnum ::= ON */ yytestcase(yyruleno==311);
      /* (312) nmnum ::= DELETE */ yytestcase(yyruleno==312);
      /* (313) nmnum ::= DEFAULT */ yytestcase(yyruleno==313);
      /* (314) plus_num ::= INTEGER|FLOAT */ yytestcase(yyruleno==314);
      /* (315) foreach_clause ::= */ yytestcase(yyruleno==315);
      /* (316) foreach_clause ::= FOR EACH ROW */ yytestcase(yyruleno==316);
      /* (317) trnm ::= nm */ yytestcase(yyruleno==317);
      /* (318) tridxby ::= */ yytestcase(yyruleno==318);
      /* (319) database_kw_opt ::= DATABASE */ yytestcase(yyruleno==319);
      /* (320) database_kw_opt ::= */ yytestcase(yyruleno==320);
      /* (321) kwcolumn_opt ::= */ yytestcase(yyruleno==321);
      /* (322) kwcolumn_opt ::= COLUMNKW */ yytestcase(yyruleno==322);
      /* (323) vtabarglist ::= vtabarg */ yytestcase(yyruleno==323);
      /* (324) vtabarglist ::= vtabarglist COMMA vtabarg */ yytestcase(yyruleno==324);
      /* (325) vtabarg ::= vtabarg vtabargtoken */ yytestcase(yyruleno==325);
      /* (326) anylist ::= */ yytestcase(yyruleno==326);
      /* (327) anylist ::= anylist LP anylist RP */ yytestcase(yyruleno==327);
      /* (328) anylist ::= anylist ANY */ yytestcase(yyruleno==328);
        break;
/********** End reduce actions ************************************************/
  };
  assert( yyruleno<sizeof(yyRuleInfo)/sizeof(yyRuleInfo[0]) );
  yygoto = yyRuleInfo[yyruleno].lhs;
  yysize = yyRuleInfo[yyruleno].nrhs;
  yyact = yy_find_reduce_action(yymsp[yysize].stateno,(YYCODETYPE)yygoto);
................................................................................
  /* There are no SHIFTREDUCE actions on nonterminals because the table
  ** generator has simplified them to pure REDUCE actions. */
  assert( !(yyact>YY_MAX_SHIFT && yyact<=YY_MAX_SHIFTREDUCE) );

  /* It is not possible for a REDUCE to be followed by an error */
  assert( yyact!=YY_ERROR_ACTION );

  if( yyact==YY_ACCEPT_ACTION ){
    yypParser->yytos += yysize;
    yy_accept(yypParser);
  }else{
    yymsp += yysize+1;
    yypParser->yytos = yymsp;
    yymsp->stateno = (YYACTIONTYPE)yyact;
    yymsp->major = (YYCODETYPE)yygoto;
    yyTraceShift(yypParser, yyact);
  }
}

/*
** The following code executes when the parse fails
*/
#ifndef YYNOERRORRECOVERY
static void yy_parse_failed(
................................................................................
  sqlite3ParserTOKENTYPE yyminor         /* The minor type of the error token */
){
  sqlite3ParserARG_FETCH;
#define TOKEN yyminor
/************ Begin %syntax_error code ****************************************/

  UNUSED_PARAMETER(yymajor);  /* Silence some compiler warnings */
  assert( TOKEN.z[0] );  /* The tokenizer always gives us a token */
  sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &TOKEN);



/************ End %syntax_error code ******************************************/
  sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument variable */
}

/*
** The following is executed when the parser accepts
*/
................................................................................
#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
  yyendofinput = (yymajor==0);
#endif
  sqlite3ParserARG_STORE;

#ifndef NDEBUG
  if( yyTraceFILE ){



    fprintf(yyTraceFILE,"%sInput '%s'\n",yyTracePrompt,yyTokenName[yymajor]);




  }
#endif

  do{
    yyact = yy_find_shift_action(yypParser,(YYCODETYPE)yymajor);


    if( yyact <= YY_MAX_SHIFTREDUCE ){
      yy_shift(yypParser,yyact,yymajor,yyminor);
#ifndef YYNOERRORRECOVERY
      yypParser->yyerrcnt--;
#endif
      yymajor = YYNOCODE;
    }else if( yyact <= YY_MAX_REDUCE ){
      yy_reduce(yypParser,yyact-YY_MIN_REDUCE);


    }else{
      assert( yyact == YY_ERROR_ACTION );
      yyminorunion.yy0 = yyminor;
#ifdef YYERRORSYMBOL
      int yymx;
#endif
#ifndef NDEBUG
................................................................................
      if( lastTokenParsed==TK_SEMI ){
        tokenType = 0;
      }else if( lastTokenParsed==0 ){
        break;
      }else{
        tokenType = TK_SEMI;
      }
      zSql -= n;
    }
    if( tokenType>=TK_SPACE ){
      assert( tokenType==TK_SPACE || tokenType==TK_ILLEGAL );
      if( db->u1.isInterrupted ){
        pParse->rc = SQLITE_INTERRUPT;
        break;
      }
................................................................................
#if 0
}  /* extern "C" */
#endif  /* __cplusplus */

/************** End of rtree.h ***********************************************/
/************** Continuing where we left off in main.c ***********************/
#endif
#ifdef SQLITE_ENABLE_ICU
/************** Include sqliteicu.h in the middle of main.c ******************/
/************** Begin file sqliteicu.h ***************************************/
/*
** 2008 May 26
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
................................................................................
      } aFlagOp[] = {
        { SQLITE_DBCONFIG_ENABLE_FKEY,           SQLITE_ForeignKeys    },
        { SQLITE_DBCONFIG_ENABLE_TRIGGER,        SQLITE_EnableTrigger  },
        { SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER, SQLITE_Fts3Tokenizer  },
        { SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION, SQLITE_LoadExtension  },
        { SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE,      SQLITE_NoCkptOnClose  },
        { SQLITE_DBCONFIG_ENABLE_QPSG,           SQLITE_EnableQPSG     },

      };
      unsigned int i;
      rc = SQLITE_ERROR; /* IMP: R-42790-23372 */
      for(i=0; i<ArraySize(aFlagOp); i++){
        if( aFlagOp[i].op==op ){
          int onoff = va_arg(ap, int);
          int *pRes = va_arg(ap, int*);
................................................................................
      case SQLITE_BUSY_RECOVERY:      zName = "SQLITE_BUSY_RECOVERY";     break;
      case SQLITE_BUSY_SNAPSHOT:      zName = "SQLITE_BUSY_SNAPSHOT";     break;
      case SQLITE_LOCKED:             zName = "SQLITE_LOCKED";            break;
      case SQLITE_LOCKED_SHAREDCACHE: zName = "SQLITE_LOCKED_SHAREDCACHE";break;
      case SQLITE_NOMEM:              zName = "SQLITE_NOMEM";             break;
      case SQLITE_READONLY:           zName = "SQLITE_READONLY";          break;
      case SQLITE_READONLY_RECOVERY:  zName = "SQLITE_READONLY_RECOVERY"; break;
      case SQLITE_READONLY_CANTLOCK:  zName = "SQLITE_READONLY_CANTLOCK"; break;
      case SQLITE_READONLY_ROLLBACK:  zName = "SQLITE_READONLY_ROLLBACK"; break;
      case SQLITE_READONLY_DBMOVED:   zName = "SQLITE_READONLY_DBMOVED";  break;

      case SQLITE_INTERRUPT:          zName = "SQLITE_INTERRUPT";         break;
      case SQLITE_IOERR:              zName = "SQLITE_IOERR";             break;
      case SQLITE_IOERR_READ:         zName = "SQLITE_IOERR_READ";        break;
      case SQLITE_IOERR_SHORT_READ:   zName = "SQLITE_IOERR_SHORT_READ";  break;
      case SQLITE_IOERR_WRITE:        zName = "SQLITE_IOERR_WRITE";       break;
      case SQLITE_IOERR_FSYNC:        zName = "SQLITE_IOERR_FSYNC";       break;
      case SQLITE_IOERR_DIR_FSYNC:    zName = "SQLITE_IOERR_DIR_FSYNC";   break;
................................................................................
  }else if( flags & SQLITE_OPEN_NOMUTEX ){
    isThreadsafe = 0;
  }else if( flags & SQLITE_OPEN_FULLMUTEX ){
    isThreadsafe = 1;
  }else{
    isThreadsafe = sqlite3GlobalConfig.bFullMutex;
  }

  if( flags & SQLITE_OPEN_PRIVATECACHE ){
    flags &= ~SQLITE_OPEN_SHAREDCACHE;
  }else if( sqlite3GlobalConfig.sharedCacheEnabled ){
    flags |= SQLITE_OPEN_SHAREDCACHE;
  }

  /* Remove harmful bits from the flags parameter
................................................................................
               SQLITE_OPEN_FULLMUTEX |
               SQLITE_OPEN_WAL
             );

  /* Allocate the sqlite data structure */
  db = sqlite3MallocZero( sizeof(sqlite3) );
  if( db==0 ) goto opendb_out;
  if( isThreadsafe ){




    db->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_RECURSIVE);
    if( db->mutex==0 ){
      sqlite3_free(db);
      db = 0;
      goto opendb_out;
    }



  }
  sqlite3_mutex_enter(db->mutex);
  db->errMask = 0xff;
  db->nDb = 2;
  db->magic = SQLITE_MAGIC_BUSY;
  db->aDb = db->aDbStatic;

................................................................................

#ifdef SQLITE_ENABLE_FTS3 /* automatically defined by SQLITE_ENABLE_FTS4 */
  if( !db->mallocFailed && rc==SQLITE_OK ){
    rc = sqlite3Fts3Init(db);
  }
#endif

#ifdef SQLITE_ENABLE_ICU
  if( !db->mallocFailed && rc==SQLITE_OK ){
    rc = sqlite3IcuInit(db);
  }
#endif

#ifdef SQLITE_ENABLE_RTREE
  if( !db->mallocFailed && rc==SQLITE_OK){
................................................................................
**
**   1.  Serve as a convenient place to set a breakpoint in a debugger
**       to detect when version error conditions occurs.
**
**   2.  Invoke sqlite3_log() to provide the source code location where
**       a low-level error is first detected.
*/
static int reportError(int iErr, int lineno, const char *zType){
  sqlite3_log(iErr, "%s at line %d of [%.10s]",
              zType, lineno, 20+sqlite3_sourceid());
  return iErr;
}
SQLITE_PRIVATE int sqlite3CorruptError(int lineno){
  testcase( sqlite3GlobalConfig.xLog!=0 );
  return reportError(SQLITE_CORRUPT, lineno, "database corruption");
}
SQLITE_PRIVATE int sqlite3MisuseError(int lineno){
  testcase( sqlite3GlobalConfig.xLog!=0 );
  return reportError(SQLITE_MISUSE, lineno, "misuse");
}
SQLITE_PRIVATE int sqlite3CantopenError(int lineno){
  testcase( sqlite3GlobalConfig.xLog!=0 );
  return reportError(SQLITE_CANTOPEN, lineno, "cannot open file");
}
#ifdef SQLITE_DEBUG
SQLITE_PRIVATE int sqlite3CorruptPgnoError(int lineno, Pgno pgno){
  char zMsg[100];
  sqlite3_snprintf(sizeof(zMsg), zMsg, "database corruption page %d", pgno);
  testcase( sqlite3GlobalConfig.xLog!=0 );
  return reportError(SQLITE_CORRUPT, lineno, zMsg);
}
SQLITE_PRIVATE int sqlite3NomemError(int lineno){
  testcase( sqlite3GlobalConfig.xLog!=0 );
  return reportError(SQLITE_NOMEM, lineno, "OOM");
}
SQLITE_PRIVATE int sqlite3IoerrnomemError(int lineno){
  testcase( sqlite3GlobalConfig.xLog!=0 );
  return reportError(SQLITE_IOERR_NOMEM, lineno, "I/O OOM error");
}
#endif

#ifndef SQLITE_OMIT_DEPRECATED
/*
** This is a convenience routine that makes sure that all thread-specific
** data for this thread has been deallocated.
................................................................................
      db->init.newTnum = va_arg(ap,int);
      if( db->init.busy==0 && db->init.newTnum>0 ){
        sqlite3ResetAllSchemasOfConnection(db);
      }
      sqlite3_mutex_leave(db->mutex);
      break;
    }
















  }
  va_end(ap);
#endif /* SQLITE_UNTESTABLE */
  return rc;
}

/*
................................................................................
#define RTREE_REINSERT(p) RTREE_MINCELLS(p)
#define RTREE_MAXCELLS 51

/*
** The smallest possible node-size is (512-64)==448 bytes. And the largest
** supported cell size is 48 bytes (8 byte rowid + ten 4 byte coordinates).
** Therefore all non-root nodes must contain at least 3 entries. Since 
** 2^40 is greater than 2^64, an r-tree structure always has a depth of
** 40 or less.
*/
#define RTREE_MAX_DEPTH 40


/*
** Number of entries in the cursor RtreeNode cache.  The first entry is
................................................................................
  Rtree *pRtree,               /* Rtree table */
  RtreeCell *pCell,            /* Cell to insert into rtree */
  int iHeight,                 /* Height of sub-tree rooted at pCell */
  RtreeNode **ppLeaf           /* OUT: Selected leaf page */
){
  int rc;
  int ii;
  RtreeNode *pNode;
  rc = nodeAcquire(pRtree, 1, 0, &pNode);

  for(ii=0; rc==SQLITE_OK && ii<(pRtree->iDepth-iHeight); ii++){
    int iCell;
    sqlite3_int64 iBest = 0;

    RtreeDValue fMinGrowth = RTREE_ZERO;
................................................................................
  **
  ** This is equivalent to copying the contents of the child into
  ** the root node (the operation that Gutman's paper says to perform 
  ** in this scenario).
  */
  if( rc==SQLITE_OK && pRtree->iDepth>0 && NCELL(pRoot)==1 ){
    int rc2;
    RtreeNode *pChild;
    i64 iChild = nodeGetRowid(pRtree, pRoot, 0);
    rc = nodeAcquire(pRtree, iChild, pRoot, &pChild);
    if( rc==SQLITE_OK ){
      rc = removeNode(pRtree, pChild, pRtree->iDepth-1);
    }
    rc2 = nodeRelease(pRtree, pChild);
    if( rc==SQLITE_OK ) rc = rc2;
................................................................................
  ){
    sqlite3_result_error(ctx, "Invalid argument to rtreedepth()", -1); 
  }else{
    u8 *zBlob = (u8 *)sqlite3_value_blob(apArg[0]);
    sqlite3_result_int(ctx, readInt16(zBlob));
  }
}










































































































































































































































































































































































































































































/*
** Register the r-tree module with database handle db. This creates the
** virtual table module "rtree" and the debugging/analysis scalar 
** function "rtreenode".
*/
SQLITE_PRIVATE int sqlite3RtreeInit(sqlite3 *db){
................................................................................
  const int utf8 = SQLITE_UTF8;
  int rc;

  rc = sqlite3_create_function(db, "rtreenode", 2, utf8, 0, rtreenode, 0, 0);
  if( rc==SQLITE_OK ){
    rc = sqlite3_create_function(db, "rtreedepth", 1, utf8, 0,rtreedepth, 0, 0);
  }



  if( rc==SQLITE_OK ){
#ifdef SQLITE_RTREE_INT_ONLY
    void *c = (void *)RTREE_COORD_INT32;
#else
    void *c = (void *)RTREE_COORD_REAL32;
#endif
    rc = sqlite3_create_module_v2(db, "rtree", &rtreeModule, c, 0);
................................................................................
**
**   * Integration of ICU and SQLite collation sequences.
**
**   * An implementation of the LIKE operator that uses ICU to 
**     provide case-independent matching.
*/


#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_ICU)


/* Include ICU headers */
#include <unicode/utypes.h>
#include <unicode/uregex.h>
#include <unicode/ustring.h>
#include <unicode/ucol.h>

................................................................................
#ifndef SQLITE_CORE
/*   #include "sqlite3ext.h" */
  SQLITE_EXTENSION_INIT1
#else
/*   #include "sqlite3.h" */
#endif





















/*
** Maximum length (in bytes) of the pattern in a LIKE or GLOB
** operator.
*/
#ifndef SQLITE_MAX_LIKE_PATTERN_LENGTH
# define SQLITE_MAX_LIKE_PATTERN_LENGTH 50000
#endif
................................................................................
  }

  if( zA && zB ){
    sqlite3_result_int(context, icuLikeCompare(zA, zB, uEsc));
  }
}

/*
** This function is called when an ICU function called from within
** the implementation of an SQL scalar function returns an error.
**
** The scalar function context passed as the first argument is 
** loaded with an error message based on the following two args.
*/
static void icuFunctionError(
  sqlite3_context *pCtx,       /* SQLite scalar function context */
  const char *zName,           /* Name of ICU function that failed */
  UErrorCode e                 /* Error code returned by ICU function */
){
  char zBuf[128];
  sqlite3_snprintf(128, zBuf, "ICU error: %s(): %s", zName, u_errorName(e));
  zBuf[127] = '\0';
  sqlite3_result_error(pCtx, zBuf, -1);
}

/*
** Function to delete compiled regexp objects. Registered as
** a destructor function with sqlite3_set_auxdata().
*/
static void icuRegexpDelete(void *p){
  URegularExpression *pExpr = (URegularExpression *)p;
  uregex_close(pExpr);
................................................................................
      icuFunctionError(p, bToUpper ? "u_strToUpper" : "u_strToLower", status);
    }
    return;
  }
  assert( 0 );     /* Unreachable */
}



/*
** Collation sequence destructor function. The pCtx argument points to
** a UCollator structure previously allocated using ucol_open().
*/
static void icuCollationDel(void *pCtx){
  UCollator *p = (UCollator *)pCtx;
  ucol_close(p);
................................................................................
    const char *zName;                        /* Function name */
    unsigned char nArg;                       /* Number of arguments */
    unsigned short enc;                       /* Optimal text encoding */
    unsigned char iContext;                   /* sqlite3_user_data() context */
    void (*xFunc)(sqlite3_context*,int,sqlite3_value**);
  } scalars[] = {
    {"icu_load_collation",  2, SQLITE_UTF8,                1, icuLoadCollation},

    {"regexp", 2, SQLITE_ANY|SQLITE_DETERMINISTIC,         0, icuRegexpFunc},
    {"lower",  1, SQLITE_UTF16|SQLITE_DETERMINISTIC,       0, icuCaseFunc16},
    {"lower",  2, SQLITE_UTF16|SQLITE_DETERMINISTIC,       0, icuCaseFunc16},
    {"upper",  1, SQLITE_UTF16|SQLITE_DETERMINISTIC,       1, icuCaseFunc16},
    {"upper",  2, SQLITE_UTF16|SQLITE_DETERMINISTIC,       1, icuCaseFunc16},
    {"lower",  1, SQLITE_UTF8|SQLITE_DETERMINISTIC,        0, icuCaseFunc16},
    {"lower",  2, SQLITE_UTF8|SQLITE_DETERMINISTIC,        0, icuCaseFunc16},
    {"upper",  1, SQLITE_UTF8|SQLITE_DETERMINISTIC,        1, icuCaseFunc16},
    {"upper",  2, SQLITE_UTF8|SQLITE_DETERMINISTIC,        1, icuCaseFunc16},
    {"like",   2, SQLITE_UTF8|SQLITE_DETERMINISTIC,        0, icuLikeFunc},
    {"like",   3, SQLITE_UTF8|SQLITE_DETERMINISTIC,        0, icuLikeFunc},

  };
  int rc = SQLITE_OK;
  int i;

  
  for(i=0; rc==SQLITE_OK && i<(int)(sizeof(scalars)/sizeof(scalars[0])); i++){
    const struct IcuScalar *p = &scalars[i];
    rc = sqlite3_create_function(
        db, p->zName, p->nArg, p->enc, 
        p->iContext ? (void*)db : (void*)0,
        p->xFunc, 0, 0
................................................................................
typedef struct DbpageTable DbpageTable;
typedef struct DbpageCursor DbpageCursor;

struct DbpageCursor {
  sqlite3_vtab_cursor base;       /* Base class.  Must be first */
  int pgno;                       /* Current page number */
  int mxPgno;                     /* Last page to visit on this scan */




};

struct DbpageTable {
  sqlite3_vtab base;              /* Base class.  Must be first */
  sqlite3 *db;                    /* The database */
  Pager *pPager;                  /* Pager being read/written */
  int iDb;                        /* Index of database to analyze */
  int szPage;                     /* Size of each page in bytes */
  int nPage;                      /* Number of pages in the file */
};








/*
** Connect to or create a dbpagevfs virtual table.
*/
static int dbpageConnect(
  sqlite3 *db,
  void *pAux,
  int argc, const char *const*argv,
  sqlite3_vtab **ppVtab,
  char **pzErr
){
  DbpageTable *pTab = 0;
  int rc = SQLITE_OK;
  int iDb;

  if( argc>=4 ){
    Token nm;
    sqlite3TokenInit(&nm, (char*)argv[3]);
    iDb = sqlite3FindDb(db, &nm);
    if( iDb<0 ){
      *pzErr = sqlite3_mprintf("no such schema: %s", argv[3]);
      return SQLITE_ERROR;
    }
  }else{
    iDb = 0;
  }
  rc = sqlite3_declare_vtab(db, 
          "CREATE TABLE x(pgno INTEGER PRIMARY KEY, data BLOB, schema HIDDEN)");
  if( rc==SQLITE_OK ){
    pTab = (DbpageTable *)sqlite3_malloc64(sizeof(DbpageTable));
    if( pTab==0 ) rc = SQLITE_NOMEM_BKPT;
  }

  assert( rc==SQLITE_OK || pTab==0 );
  if( rc==SQLITE_OK ){
    Btree *pBt = db->aDb[iDb].pBt;
    memset(pTab, 0, sizeof(DbpageTable));
    pTab->db = db;
    pTab->iDb = iDb;
    pTab->pPager = pBt ? sqlite3BtreePager(pBt) : 0;
  }

  *ppVtab = (sqlite3_vtab*)pTab;
  return rc;
}

/*
................................................................................
  sqlite3_free(pVtab);
  return SQLITE_OK;
}

/*
** idxNum:
**
**     0     full table scan
**     1     pgno=?1


*/
static int dbpageBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
  int i;

























  pIdxInfo->estimatedCost = 1.0e6;  /* Initial cost estimate */


  for(i=0; i<pIdxInfo->nConstraint; i++){
    struct sqlite3_index_constraint *p = &pIdxInfo->aConstraint[i];
    if( p->usable && p->iColumn<=0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ ){
      pIdxInfo->estimatedRows = 1;
      pIdxInfo->idxFlags = SQLITE_INDEX_SCAN_UNIQUE;
      pIdxInfo->estimatedCost = 1.0;
      pIdxInfo->idxNum = 1;
      pIdxInfo->aConstraintUsage[i].argvIndex = 1;
      pIdxInfo->aConstraintUsage[i].omit = 1;

      break;
    }
  }


  if( pIdxInfo->nOrderBy>=1
   && pIdxInfo->aOrderBy[0].iColumn<=0
   && pIdxInfo->aOrderBy[0].desc==0
  ){
    pIdxInfo->orderByConsumed = 1;
  }
  return SQLITE_OK;
................................................................................
}

/*
** Close a dbpagevfs cursor.
*/
static int dbpageClose(sqlite3_vtab_cursor *pCursor){
  DbpageCursor *pCsr = (DbpageCursor *)pCursor;

  sqlite3_free(pCsr);
  return SQLITE_OK;
}

/*
** Move a dbpagevfs cursor to the next entry in the file.
*/
................................................................................
}

static int dbpageEof(sqlite3_vtab_cursor *pCursor){
  DbpageCursor *pCsr = (DbpageCursor *)pCursor;
  return pCsr->pgno > pCsr->mxPgno;
}











static int dbpageFilter(
  sqlite3_vtab_cursor *pCursor, 
  int idxNum, const char *idxStr,
  int argc, sqlite3_value **argv
){
  DbpageCursor *pCsr = (DbpageCursor *)pCursor;
  DbpageTable *pTab = (DbpageTable *)pCursor->pVtab;
  int rc = SQLITE_OK;

  Btree *pBt = pTab->db->aDb[pTab->iDb].pBt;

















  pTab->szPage = sqlite3BtreeGetPageSize(pBt);
  pTab->nPage = sqlite3BtreeLastPage(pBt);
  if( idxNum==1 ){

    pCsr->pgno = sqlite3_value_int(argv[0]);
    if( pCsr->pgno<1 || pCsr->pgno>pTab->nPage ){
      pCsr->pgno = 1;
      pCsr->mxPgno = 0;
    }else{
      pCsr->mxPgno = pCsr->pgno;
    }
  }else{
    pCsr->pgno = 1;
    pCsr->mxPgno = pTab->nPage;
  }


  return rc;
}

static int dbpageColumn(
  sqlite3_vtab_cursor *pCursor, 
  sqlite3_context *ctx, 
  int i
){
  DbpageCursor *pCsr = (DbpageCursor *)pCursor;
  DbpageTable *pTab = (DbpageTable *)pCursor->pVtab;
  int rc = SQLITE_OK;
  switch( i ){
    case 0: {           /* pgno */
      sqlite3_result_int(ctx, pCsr->pgno);
      break;
    }
    case 1: {           /* data */
      DbPage *pDbPage = 0;
      rc = sqlite3PagerGet(pTab->pPager, pCsr->pgno, (DbPage**)&pDbPage, 0);
      if( rc==SQLITE_OK ){
        sqlite3_result_blob(ctx, sqlite3PagerGetData(pDbPage), pTab->szPage,
                            SQLITE_TRANSIENT);
      }
      sqlite3PagerUnref(pDbPage);
      break;
    }
    default: {          /* schema */
      sqlite3 *db = sqlite3_context_db_handle(ctx);
      sqlite3_result_text(ctx, db->aDb[pTab->iDb].zDbSName, -1, SQLITE_STATIC);
      break;
    }
  }
  return SQLITE_OK;
}

static int dbpageRowid(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){
................................................................................
static int dbpageUpdate(
  sqlite3_vtab *pVtab,
  int argc,
  sqlite3_value **argv,
  sqlite_int64 *pRowid
){
  DbpageTable *pTab = (DbpageTable *)pVtab;
  int pgno;
  DbPage *pDbPage = 0;
  int rc = SQLITE_OK;
  char *zErr = 0;






  if( argc==1 ){
    zErr = "cannot delete";
    goto update_fail;
  }
  pgno = sqlite3_value_int(argv[0]);
  if( pgno<1 || pgno>pTab->nPage ){
    zErr = "bad page number";
    goto update_fail;
  }
  if( sqlite3_value_int(argv[1])!=pgno ){
    zErr = "cannot insert";
    goto update_fail;
  }












  if( sqlite3_value_type(argv[3])!=SQLITE_BLOB 
   || sqlite3_value_bytes(argv[3])!=pTab->szPage 
  ){
    zErr = "bad page value";
    goto update_fail;
  }

  rc = sqlite3PagerGet(pTab->pPager, pgno, (DbPage**)&pDbPage, 0);
  if( rc==SQLITE_OK ){
    rc = sqlite3PagerWrite(pDbPage);
    if( rc==SQLITE_OK ){
      memcpy(sqlite3PagerGetData(pDbPage),
             sqlite3_value_blob(argv[3]),
             pTab->szPage);
    }
  }
  sqlite3PagerUnref(pDbPage);
  return rc;

update_fail:
  sqlite3_free(pVtab->zErrMsg);
  pVtab->zErrMsg = sqlite3_mprintf("%s", zErr);
  return SQLITE_ERROR;
}

















/*
** Invoke this routine to register the "dbpage" virtual table module
*/
SQLITE_PRIVATE int sqlite3DbpageRegister(sqlite3 *db){
  static sqlite3_module dbpage_module = {
    0,                            /* iVersion */
................................................................................
    dbpageClose,                  /* xClose - close a cursor */
    dbpageFilter,                 /* xFilter - configure scan constraints */
    dbpageNext,                   /* xNext - advance a cursor */
    dbpageEof,                    /* xEof - check for end of scan */
    dbpageColumn,                 /* xColumn - read data */
    dbpageRowid,                  /* xRowid - read data */
    dbpageUpdate,                 /* xUpdate */
    0,                            /* xBegin */
    0,                            /* xSync */
    0,                            /* xCommit */
    0,                            /* xRollback */
    0,                            /* xFindMethod */
    0,                            /* xRename */
    0,                            /* xSavepoint */
    0,                            /* xRelease */
................................................................................
static Fts5ExprPhrase *sqlite3Fts5ParseTerm(
  Fts5Parse *pParse, 
  Fts5ExprPhrase *pPhrase, 
  Fts5Token *pToken,
  int bPrefix
);



static Fts5ExprNearset *sqlite3Fts5ParseNearset(
  Fts5Parse*, 
  Fts5ExprNearset*,
  Fts5ExprPhrase* 
);

static Fts5Colset *sqlite3Fts5ParseColset(
................................................................................
#define FTS5_COLON                            5
#define FTS5_MINUS                            6
#define FTS5_LCP                              7
#define FTS5_RCP                              8
#define FTS5_STRING                           9
#define FTS5_LP                              10
#define FTS5_RP                              11

#define FTS5_COMMA                           12
#define FTS5_PLUS                            13
#define FTS5_STAR                            14

/*
** 2000-05-29
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
................................................................................
**    sqlite3Fts5ParserARG_PDECL     A parameter declaration for the %extra_argument
**    sqlite3Fts5ParserARG_STORE     Code to store %extra_argument into fts5yypParser
**    sqlite3Fts5ParserARG_FETCH     Code to extract %extra_argument from fts5yypParser
**    fts5YYERRORSYMBOL      is the code number of the error symbol.  If not
**                       defined, then do no error processing.
**    fts5YYNSTATE           the combined number of states.
**    fts5YYNRULE            the number of rules in the grammar

**    fts5YY_MAX_SHIFT       Maximum value for shift actions
**    fts5YY_MIN_SHIFTREDUCE Minimum value for shift-reduce actions
**    fts5YY_MAX_SHIFTREDUCE Maximum value for shift-reduce actions
**    fts5YY_MIN_REDUCE      Minimum value for reduce actions
**    fts5YY_MAX_REDUCE      Maximum value for reduce actions
**    fts5YY_ERROR_ACTION    The fts5yy_action[] code for syntax error
**    fts5YY_ACCEPT_ACTION   The fts5yy_action[] code for accept
**    fts5YY_NO_ACTION       The fts5yy_action[] code for no-op


*/
#ifndef INTERFACE
# define INTERFACE 1
#endif
/************* Begin control #defines *****************************************/
#define fts5YYCODETYPE unsigned char
#define fts5YYNOCODE 28
#define fts5YYACTIONTYPE unsigned char
#define sqlite3Fts5ParserFTS5TOKENTYPE Fts5Token
typedef union {
  int fts5yyinit;
  sqlite3Fts5ParserFTS5TOKENTYPE fts5yy0;
  int fts5yy4;
  Fts5Colset* fts5yy11;
  Fts5ExprNode* fts5yy24;
  Fts5ExprNearset* fts5yy46;

  Fts5ExprPhrase* fts5yy53;
} fts5YYMINORTYPE;
#ifndef fts5YYSTACKDEPTH
#define fts5YYSTACKDEPTH 100
#endif
#define sqlite3Fts5ParserARG_SDECL Fts5Parse *pParse;
#define sqlite3Fts5ParserARG_PDECL ,Fts5Parse *pParse
#define sqlite3Fts5ParserARG_FETCH Fts5Parse *pParse = fts5yypParser->pParse
#define sqlite3Fts5ParserARG_STORE fts5yypParser->pParse = pParse
#define fts5YYNSTATE             33
#define fts5YYNRULE              27

#define fts5YY_MAX_SHIFT         32
#define fts5YY_MIN_SHIFTREDUCE   50
#define fts5YY_MAX_SHIFTREDUCE   76
#define fts5YY_MIN_REDUCE        77
#define fts5YY_MAX_REDUCE        103
#define fts5YY_ERROR_ACTION      104
#define fts5YY_ACCEPT_ACTION     105
#define fts5YY_NO_ACTION         106


/************* End control #defines *******************************************/

/* Define the fts5yytestcase() macro to be a no-op if is not already defined
** otherwise.
**
** Applications can choose to define fts5yytestcase() in the %include section
** to a macro that can assist in verifying code coverage.  For production
................................................................................
**
**   0 <= N <= fts5YY_MAX_SHIFT             Shift N.  That is, push the lookahead
**                                      token onto the stack and goto state N.
**
**   N between fts5YY_MIN_SHIFTREDUCE       Shift to an arbitrary state then
**     and fts5YY_MAX_SHIFTREDUCE           reduce by rule N-fts5YY_MIN_SHIFTREDUCE.
**
**   N between fts5YY_MIN_REDUCE            Reduce by rule N-fts5YY_MIN_REDUCE
**     and fts5YY_MAX_REDUCE
**
**   N == fts5YY_ERROR_ACTION               A syntax error has occurred.
**
**   N == fts5YY_ACCEPT_ACTION              The parser accepts its input.
**
**   N == fts5YY_NO_ACTION                  No such action.  Denotes unused
**                                      slots in the fts5yy_action[] table.



**
** The action table is constructed as a single large table named fts5yy_action[].
** Given state S and lookahead X, the action is computed as either:
**
**    (A)   N = fts5yy_action[ fts5yy_shift_ofst[S] + X ]
**    (B)   N = fts5yy_default[S]
**
** The (A) formula is preferred.  The B formula is used instead if:
**    (1)  The fts5yy_shift_ofst[S]+X value is out of range, or
**    (2)  fts5yy_lookahead[fts5yy_shift_ofst[S]+X] is not equal to X, or
**    (3)  fts5yy_shift_ofst[S] equal fts5YY_SHIFT_USE_DFLT.
** (Implementation note: fts5YY_SHIFT_USE_DFLT is chosen so that
** fts5YY_SHIFT_USE_DFLT+X will be out of range for all possible lookaheads X.
** Hence only tests (1) and (2) need to be evaluated.)
**
** The formulas above are for computing the action when the lookahead is
** a terminal symbol.  If the lookahead is a non-terminal (as occurs after
** a reduce action) then the fts5yy_reduce_ofst[] array is used in place of
** the fts5yy_shift_ofst[] array and fts5YY_REDUCE_USE_DFLT is used in place of
** fts5YY_SHIFT_USE_DFLT.
**
** The following are the tables generated in this section:
**
**  fts5yy_action[]        A single table containing all actions.
**  fts5yy_lookahead[]     A table containing the lookahead for each entry in
**                     fts5yy_action.  Used to detect hash collisions.
**  fts5yy_shift_ofst[]    For each state, the offset into fts5yy_action for
**                     shifting terminals.
**  fts5yy_reduce_ofst[]   For each state, the offset into fts5yy_action for
**                     shifting non-terminals after a reduce.
**  fts5yy_default[]       Default action for each state.
**
*********** Begin parsing tables **********************************************/
#define fts5YY_ACTTAB_COUNT (98)
static const fts5YYACTIONTYPE fts5yy_action[] = {
 /*     0 */   105,   19,   90,    6,   26,   93,   92,   24,   24,   17,
 /*    10 */    90,    6,   26,   16,   92,   54,   24,   18,   90,    6,
 /*    20 */    26,   10,   92,   12,   24,   75,   86,   90,    6,   26,
 /*    30 */    13,   92,   75,   24,   20,   90,    6,   26,  101,   92,
 /*    40 */    56,   24,   27,   90,    6,   26,  100,   92,   21,   24,
 /*    50 */    23,   15,   30,   11,    1,   91,   22,   25,    9,   92,
 /*    60 */     7,   24,    3,    4,    5,    3,    4,    5,    3,   77,
 /*    70 */     4,    5,    3,   61,   23,   15,   60,   11,   80,   12,
 /*    80 */     2,   13,   68,   10,   29,   52,   55,   75,   31,   32,
 /*    90 */     8,   28,    5,    3,   51,   55,   72,   14,

};
static const fts5YYCODETYPE fts5yy_lookahead[] = {
 /*     0 */    16,   17,   18,   19,   20,   22,   22,   24,   24,   17,
 /*    10 */    18,   19,   20,    7,   22,    9,   24,   17,   18,   19,
 /*    20 */    20,   10,   22,    9,   24,   14,   17,   18,   19,   20,
 /*    30 */     9,   22,   14,   24,   17,   18,   19,   20,   26,   22,
 /*    40 */     9,   24,   17,   18,   19,   20,   26,   22,   21,   24,
 /*    50 */     6,    7,   13,    9,   10,   18,   21,   20,    5,   22,


 /*    60 */     5,   24,    3,    1,    2,    3,    1,    2,    3,    0,
 /*    70 */     1,    2,    3,   11,    6,    7,   11,    9,    5,    9,
 /*    80 */    10,    9,   11,   10,   12,    8,    9,   14,   24,   25,
 /*    90 */    23,   24,    2,    3,    8,    9,    9,    9,




};
#define fts5YY_SHIFT_USE_DFLT (98)
#define fts5YY_SHIFT_COUNT    (32)
#define fts5YY_SHIFT_MIN      (0)
#define fts5YY_SHIFT_MAX      (90)
static const unsigned char fts5yy_shift_ofst[] = {
 /*     0 */    44,   44,   44,   44,   44,   44,   68,   70,   72,   14,
 /*    10 */    21,   73,   11,   18,   18,   31,   31,   62,   65,   69,
 /*    20 */    90,   77,   86,    6,   39,   53,   55,   59,   39,   87,



 /*    30 */    88,   39,   71,
};
#define fts5YY_REDUCE_USE_DFLT (-18)
#define fts5YY_REDUCE_COUNT (16)
#define fts5YY_REDUCE_MIN   (-17)
#define fts5YY_REDUCE_MAX   (67)
static const signed char fts5yy_reduce_ofst[] = {
 /*     0 */   -16,   -8,    0,    9,   17,   25,   37,  -17,   64,  -17,
 /*    10 */    67,   12,   12,   12,   20,   27,   35,


};
static const fts5YYACTIONTYPE fts5yy_default[] = {
 /*     0 */   104,  104,  104,  104,  104,  104,   89,  104,   98,  104,
 /*    10 */   104,  103,  103,  103,  103,  104,  104,  104,  104,  104,
 /*    20 */    85,  104,  104,  104,   94,  104,  104,   84,   96,  104,


 /*    30 */   104,   97,  104,
};
/********** End of lemon-generated parsing tables *****************************/

/* The next table maps tokens (terminal symbols) into fallback tokens.  
** If a construct like the following:
** 
**      %fallback ID X Y Z.
................................................................................
  fts5yyTraceFILE = TraceFILE;
  fts5yyTracePrompt = zTracePrompt;
  if( fts5yyTraceFILE==0 ) fts5yyTracePrompt = 0;
  else if( fts5yyTracePrompt==0 ) fts5yyTraceFILE = 0;
}
#endif /* NDEBUG */

#ifndef NDEBUG
/* For tracing shifts, the names of all terminals and nonterminals
** are required.  The following table supplies these names */
static const char *const fts5yyTokenName[] = { 
  "$",             "OR",            "AND",           "NOT",         
  "TERM",          "COLON",         "MINUS",         "LCP",         
  "RCP",           "STRING",        "LP",            "RP",          
  "COMMA",         "PLUS",          "STAR",          "error",       
  "input",         "expr",          "cnearset",      "exprlist",    
  "colset",        "colsetlist",    "nearset",       "nearphrases", 




















  "phrase",        "neardist_opt",  "star_opt",    

};
#endif /* NDEBUG */


#ifndef NDEBUG
/* For tracing reduce actions, the names of all rules are required.
*/
static const char *const fts5yyRuleName[] = {
 /*   0 */ "input ::= expr",
 /*   1 */ "colset ::= MINUS LCP colsetlist RCP",
................................................................................
 /*  11 */ "expr ::= LP expr RP",
 /*  12 */ "expr ::= exprlist",
 /*  13 */ "exprlist ::= cnearset",
 /*  14 */ "exprlist ::= exprlist cnearset",
 /*  15 */ "cnearset ::= nearset",
 /*  16 */ "cnearset ::= colset COLON nearset",
 /*  17 */ "nearset ::= phrase",

 /*  18 */ "nearset ::= STRING LP nearphrases neardist_opt RP",
 /*  19 */ "nearphrases ::= phrase",
 /*  20 */ "nearphrases ::= nearphrases phrase",
 /*  21 */ "neardist_opt ::=",
 /*  22 */ "neardist_opt ::= COMMA STRING",
 /*  23 */ "phrase ::= phrase PLUS STRING star_opt",
 /*  24 */ "phrase ::= STRING star_opt",
 /*  25 */ "star_opt ::= STAR",
 /*  26 */ "star_opt ::=",
};
#endif /* NDEBUG */


#if fts5YYSTACKDEPTH<=0
/*
** Try to increase the size of the parser stack.  Return the number
................................................................................
    ** being destroyed before it is finished parsing.
    **
    ** Note: during a reduce, the only symbols destroyed are those
    ** which appear on the RHS of the rule, but which are *not* used
    ** inside the C code.
    */
/********* Begin destructor definitions ***************************************/
    case 16: /* input */
{
 (void)pParse; 
}
      break;
    case 17: /* expr */
    case 18: /* cnearset */
    case 19: /* exprlist */
{
 sqlite3Fts5ParseNodeFree((fts5yypminor->fts5yy24)); 
}
      break;
    case 20: /* colset */
    case 21: /* colsetlist */
{
 sqlite3_free((fts5yypminor->fts5yy11)); 
}
      break;
    case 22: /* nearset */
    case 23: /* nearphrases */
{
 sqlite3Fts5ParseNearsetFree((fts5yypminor->fts5yy46)); 
}
      break;
    case 24: /* phrase */
{
 sqlite3Fts5ParsePhraseFree((fts5yypminor->fts5yy53)); 
}
      break;
/********* End destructor definitions *****************************************/
    default:  break;   /* If no destructor action specified: do nothing */
  }
}

................................................................................
#ifdef fts5YYTRACKMAXSTACKDEPTH
static int sqlite3Fts5ParserStackPeak(void *p){
  fts5yyParser *pParser = (fts5yyParser*)p;
  return pParser->fts5yyhwm;
}
#endif






































/*
** Find the appropriate action for a parser given the terminal
** look-ahead token iLookAhead.
*/
static unsigned int fts5yy_find_shift_action(
  fts5yyParser *pParser,        /* The parser */
  fts5YYCODETYPE iLookAhead     /* The look-ahead token */
){
  int i;
  int stateno = pParser->fts5yytos->stateno;
 
  if( stateno>=fts5YY_MIN_REDUCE ) return stateno;
  assert( stateno <= fts5YY_SHIFT_COUNT );



  do{
    i = fts5yy_shift_ofst[stateno];

    assert( iLookAhead!=fts5YYNOCODE );

    i += iLookAhead;
    if( i<0 || i>=fts5YY_ACTTAB_COUNT || fts5yy_lookahead[i]!=iLookAhead ){
#ifdef fts5YYFALLBACK
      fts5YYCODETYPE iFallback;            /* Fallback token */
      if( iLookAhead<sizeof(fts5yyFallback)/sizeof(fts5yyFallback[0])
             && (iFallback = fts5yyFallback[iLookAhead])!=0 ){
#ifndef NDEBUG
        if( fts5yyTraceFILE ){
          fprintf(fts5yyTraceFILE, "%sFALLBACK %s => %s\n",
................................................................................
  if( stateno>fts5YY_REDUCE_COUNT ){
    return fts5yy_default[stateno];
  }
#else
  assert( stateno<=fts5YY_REDUCE_COUNT );
#endif
  i = fts5yy_reduce_ofst[stateno];
  assert( i!=fts5YY_REDUCE_USE_DFLT );
  assert( iLookAhead!=fts5YYNOCODE );
  i += iLookAhead;
#ifdef fts5YYERRORSYMBOL
  if( i<0 || i>=fts5YY_ACTTAB_COUNT || fts5yy_lookahead[i]!=iLookAhead ){
    return fts5yy_default[stateno];
  }
#else
................................................................................
   sqlite3Fts5ParserARG_STORE; /* Suppress warning about unused %extra_argument var */
}

/*
** Print tracing information for a SHIFT action
*/
#ifndef NDEBUG
static void fts5yyTraceShift(fts5yyParser *fts5yypParser, int fts5yyNewState){
  if( fts5yyTraceFILE ){
    if( fts5yyNewState<fts5YYNSTATE ){
      fprintf(fts5yyTraceFILE,"%sShift '%s', go to state %d\n",
         fts5yyTracePrompt,fts5yyTokenName[fts5yypParser->fts5yytos->major],
         fts5yyNewState);
    }else{
      fprintf(fts5yyTraceFILE,"%sShift '%s'\n",
         fts5yyTracePrompt,fts5yyTokenName[fts5yypParser->fts5yytos->major]);

    }
  }
}
#else
# define fts5yyTraceShift(X,Y)
#endif

/*
** Perform a shift action.
*/
static void fts5yy_shift(
  fts5yyParser *fts5yypParser,          /* The parser to be shifted */
................................................................................
  if( fts5yyNewState > fts5YY_MAX_SHIFT ){
    fts5yyNewState += fts5YY_MIN_REDUCE - fts5YY_MIN_SHIFTREDUCE;
  }
  fts5yytos = fts5yypParser->fts5yytos;
  fts5yytos->stateno = (fts5YYACTIONTYPE)fts5yyNewState;
  fts5yytos->major = (fts5YYCODETYPE)fts5yyMajor;
  fts5yytos->minor.fts5yy0 = fts5yyMinor;
  fts5yyTraceShift(fts5yypParser, fts5yyNewState);
}

/* The following table contains information about every rule that
** is used during the reduce.
*/
static const struct {
  fts5YYCODETYPE lhs;       /* Symbol on the left-hand side of the rule */
  signed char nrhs;     /* Negative of the number of RHS symbols in the rule */
} fts5yyRuleInfo[] = {
  { 16, -1 },
  { 20, -4 },
  { 20, -3 },
  { 20, -1 },
  { 20, -2 },
  { 21, -2 },
  { 21, -1 },
  { 17, -3 },
  { 17, -3 },
  { 17, -3 },
  { 17, -5 },
  { 17, -3 },
  { 17, -1 },
  { 19, -1 },
  { 19, -2 },
  { 18, -1 },
  { 18, -3 },
  { 22, -1 },
  { 22, -5 },
  { 23, -1 },
  { 23, -2 },
  { 25, 0 },
  { 25, -2 },
  { 24, -4 },
  { 24, -2 },
  { 26, -1 },
  { 26, 0 },

};

static void fts5yy_accept(fts5yyParser*);  /* Forward Declaration */

/*
** Perform a reduce action and the shift that must immediately
** follow the reduce.






*/
static void fts5yy_reduce(
  fts5yyParser *fts5yypParser,         /* The parser */
  unsigned int fts5yyruleno        /* Number of the rule by which to reduce */


){
  int fts5yygoto;                     /* The next state */
  int fts5yyact;                      /* The next action */
  fts5yyStackEntry *fts5yymsp;            /* The top of the parser's stack */
  int fts5yysize;                     /* Amount to pop the stack */
  sqlite3Fts5ParserARG_FETCH;
  fts5yymsp = fts5yypParser->fts5yytos;
#ifndef NDEBUG
  if( fts5yyTraceFILE && fts5yyruleno<(int)(sizeof(fts5yyRuleName)/sizeof(fts5yyRuleName[0])) ){
    fts5yysize = fts5yyRuleInfo[fts5yyruleno].nrhs;

    fprintf(fts5yyTraceFILE, "%sReduce [%s], go to state %d.\n", fts5yyTracePrompt,

      fts5yyRuleName[fts5yyruleno], fts5yymsp[fts5yysize].stateno);




  }
#endif /* NDEBUG */

  /* Check that the stack is large enough to grow by a single entry
  ** if the RHS of the rule is empty.  This ensures that there is room
  ** enough on the stack to push the LHS value */
  if( fts5yyRuleInfo[fts5yyruleno].nrhs==0 ){
................................................................................
  **     { ... }           // User supplied code
  **  #line <lineno> <thisfile>
  **     break;
  */
/********** Begin reduce actions **********************************************/
        fts5YYMINORTYPE fts5yylhsminor;
      case 0: /* input ::= expr */
{ sqlite3Fts5ParseFinished(pParse, fts5yymsp[0].minor.fts5yy24); }
        break;
      case 1: /* colset ::= MINUS LCP colsetlist RCP */
{ 
    fts5yymsp[-3].minor.fts5yy11 = sqlite3Fts5ParseColsetInvert(pParse, fts5yymsp[-1].minor.fts5yy11);
}
        break;
      case 2: /* colset ::= LCP colsetlist RCP */
{ fts5yymsp[-2].minor.fts5yy11 = fts5yymsp[-1].minor.fts5yy11; }
        break;
      case 3: /* colset ::= STRING */
{
  fts5yylhsminor.fts5yy11 = sqlite3Fts5ParseColset(pParse, 0, &fts5yymsp[0].minor.fts5yy0);
}
  fts5yymsp[0].minor.fts5yy11 = fts5yylhsminor.fts5yy11;
        break;
      case 4: /* colset ::= MINUS STRING */
{
  fts5yymsp[-1].minor.fts5yy11 = sqlite3Fts5ParseColset(pParse, 0, &fts5yymsp[0].minor.fts5yy0);
  fts5yymsp[-1].minor.fts5yy11 = sqlite3Fts5ParseColsetInvert(pParse, fts5yymsp[-1].minor.fts5yy11);
}
        break;
      case 5: /* colsetlist ::= colsetlist STRING */
{ 
  fts5yylhsminor.fts5yy11 = sqlite3Fts5ParseColset(pParse, fts5yymsp[-1].minor.fts5yy11, &fts5yymsp[0].minor.fts5yy0); }
  fts5yymsp[-1].minor.fts5yy11 = fts5yylhsminor.fts5yy11;
        break;
      case 6: /* colsetlist ::= STRING */
{ 
  fts5yylhsminor.fts5yy11 = sqlite3Fts5ParseColset(pParse, 0, &fts5yymsp[0].minor.fts5yy0); 
}
  fts5yymsp[0].minor.fts5yy11 = fts5yylhsminor.fts5yy11;
        break;
      case 7: /* expr ::= expr AND expr */
{
  fts5yylhsminor.fts5yy24 = sqlite3Fts5ParseNode(pParse, FTS5_AND, fts5yymsp[-2].minor.fts5yy24, fts5yymsp[0].minor.fts5yy24, 0);
}
  fts5yymsp[-2].minor.fts5yy24 = fts5yylhsminor.fts5yy24;
        break;
      case 8: /* expr ::= expr OR expr */
{
  fts5yylhsminor.fts5yy24 = sqlite3Fts5ParseNode(pParse, FTS5_OR, fts5yymsp[-2].minor.fts5yy24, fts5yymsp[0].minor.fts5yy24, 0);
}
  fts5yymsp[-2].minor.fts5yy24 = fts5yylhsminor.fts5yy24;
        break;
      case 9: /* expr ::= expr NOT expr */
{
  fts5yylhsminor.fts5yy24 = sqlite3Fts5ParseNode(pParse, FTS5_NOT, fts5yymsp[-2].minor.fts5yy24, fts5yymsp[0].minor.fts5yy24, 0);
}
  fts5yymsp[-2].minor.fts5yy24 = fts5yylhsminor.fts5yy24;
        break;
      case 10: /* expr ::= colset COLON LP expr RP */
{
  sqlite3Fts5ParseSetColset(pParse, fts5yymsp[-1].minor.fts5yy24, fts5yymsp[-4].minor.fts5yy11);
  fts5yylhsminor.fts5yy24 = fts5yymsp[-1].minor.fts5yy24;
}
  fts5yymsp[-4].minor.fts5yy24 = fts5yylhsminor.fts5yy24;
        break;
      case 11: /* expr ::= LP expr RP */
{fts5yymsp[-2].minor.fts5yy24 = fts5yymsp[-1].minor.fts5yy24;}
        break;
      case 12: /* expr ::= exprlist */
      case 13: /* exprlist ::= cnearset */ fts5yytestcase(fts5yyruleno==13);
{fts5yylhsminor.fts5yy24 = fts5yymsp[0].minor.fts5yy24;}
  fts5yymsp[0].minor.fts5yy24 = fts5yylhsminor.fts5yy24;
        break;
      case 14: /* exprlist ::= exprlist cnearset */
{
  fts5yylhsminor.fts5yy24 = sqlite3Fts5ParseImplicitAnd(pParse, fts5yymsp[-1].minor.fts5yy24, fts5yymsp[0].minor.fts5yy24);
}
  fts5yymsp[-1].minor.fts5yy24 = fts5yylhsminor.fts5yy24;
        break;
      case 15: /* cnearset ::= nearset */
{ 
  fts5yylhsminor.fts5yy24 = sqlite3Fts5ParseNode(pParse, FTS5_STRING, 0, 0, fts5yymsp[0].minor.fts5yy46); 
}
  fts5yymsp[0].minor.fts5yy24 = fts5yylhsminor.fts5yy24;
        break;
      case 16: /* cnearset ::= colset COLON nearset */
{ 
  fts5yylhsminor.fts5yy24 = sqlite3Fts5ParseNode(pParse, FTS5_STRING, 0, 0, fts5yymsp[0].minor.fts5yy46); 
  sqlite3Fts5ParseSetColset(pParse, fts5yylhsminor.fts5yy24, fts5yymsp[-2].minor.fts5yy11);
}
  fts5yymsp[-2].minor.fts5yy24 = fts5yylhsminor.fts5yy24;
        break;
      case 17: /* nearset ::= phrase */
{ fts5yylhsminor.fts5yy46 = sqlite3Fts5ParseNearset(pParse, 0, fts5yymsp[0].minor.fts5yy53); }
  fts5yymsp[0].minor.fts5yy46 = fts5yylhsminor.fts5yy46;
        break;






      case 18: /* nearset ::= STRING LP nearphrases neardist_opt RP */
{
  sqlite3Fts5ParseNear(pParse, &fts5yymsp[-4].minor.fts5yy0);
  sqlite3Fts5ParseSetDistance(pParse, fts5yymsp[-2].minor.fts5yy46, &fts5yymsp[-1].minor.fts5yy0);
  fts5yylhsminor.fts5yy46 = fts5yymsp[-2].minor.fts5yy46;
}
  fts5yymsp[-4].minor.fts5yy46 = fts5yylhsminor.fts5yy46;
        break;
      case 19: /* nearphrases ::= phrase */
{ 
  fts5yylhsminor.fts5yy46 = sqlite3Fts5ParseNearset(pParse, 0, fts5yymsp[0].minor.fts5yy53); 
}
  fts5yymsp[0].minor.fts5yy46 = fts5yylhsminor.fts5yy46;
        break;
      case 20: /* nearphrases ::= nearphrases phrase */
{
  fts5yylhsminor.fts5yy46 = sqlite3Fts5ParseNearset(pParse, fts5yymsp[-1].minor.fts5yy46, fts5yymsp[0].minor.fts5yy53);
}
  fts5yymsp[-1].minor.fts5yy46 = fts5yylhsminor.fts5yy46;
        break;
      case 21: /* neardist_opt ::= */
{ fts5yymsp[1].minor.fts5yy0.p = 0; fts5yymsp[1].minor.fts5yy0.n = 0; }
        break;
      case 22: /* neardist_opt ::= COMMA STRING */
{ fts5yymsp[-1].minor.fts5yy0 = fts5yymsp[0].minor.fts5yy0; }
        break;
      case 23: /* phrase ::= phrase PLUS STRING star_opt */
{ 
  fts5yylhsminor.fts5yy53 = sqlite3Fts5ParseTerm(pParse, fts5yymsp[-3].minor.fts5yy53, &fts5yymsp[-1].minor.fts5yy0, fts5yymsp[0].minor.fts5yy4);
}
  fts5yymsp[-3].minor.fts5yy53 = fts5yylhsminor.fts5yy53;
        break;
      case 24: /* phrase ::= STRING star_opt */
{ 
  fts5yylhsminor.fts5yy53 = sqlite3Fts5ParseTerm(pParse, 0, &fts5yymsp[-1].minor.fts5yy0, fts5yymsp[0].minor.fts5yy4);
}
  fts5yymsp[-1].minor.fts5yy53 = fts5yylhsminor.fts5yy53;
        break;
      case 25: /* star_opt ::= STAR */
{ fts5yymsp[0].minor.fts5yy4 = 1; }
        break;
      case 26: /* star_opt ::= */
{ fts5yymsp[1].minor.fts5yy4 = 0; }
        break;
      default:
        break;
/********** End reduce actions ************************************************/
  };
  assert( fts5yyruleno<sizeof(fts5yyRuleInfo)/sizeof(fts5yyRuleInfo[0]) );
................................................................................
  /* There are no SHIFTREDUCE actions on nonterminals because the table
  ** generator has simplified them to pure REDUCE actions. */
  assert( !(fts5yyact>fts5YY_MAX_SHIFT && fts5yyact<=fts5YY_MAX_SHIFTREDUCE) );

  /* It is not possible for a REDUCE to be followed by an error */
  assert( fts5yyact!=fts5YY_ERROR_ACTION );

  if( fts5yyact==fts5YY_ACCEPT_ACTION ){
    fts5yypParser->fts5yytos += fts5yysize;
    fts5yy_accept(fts5yypParser);
  }else{
    fts5yymsp += fts5yysize+1;
    fts5yypParser->fts5yytos = fts5yymsp;
    fts5yymsp->stateno = (fts5YYACTIONTYPE)fts5yyact;
    fts5yymsp->major = (fts5YYCODETYPE)fts5yygoto;
    fts5yyTraceShift(fts5yypParser, fts5yyact);
  }
}

/*
** The following code executes when the parse fails
*/
#ifndef fts5YYNOERRORRECOVERY
static void fts5yy_parse_failed(
................................................................................
#if !defined(fts5YYERRORSYMBOL) && !defined(fts5YYNOERRORRECOVERY)
  fts5yyendofinput = (fts5yymajor==0);
#endif
  sqlite3Fts5ParserARG_STORE;

#ifndef NDEBUG
  if( fts5yyTraceFILE ){



    fprintf(fts5yyTraceFILE,"%sInput '%s'\n",fts5yyTracePrompt,fts5yyTokenName[fts5yymajor]);




  }
#endif

  do{
    fts5yyact = fts5yy_find_shift_action(fts5yypParser,(fts5YYCODETYPE)fts5yymajor);


    if( fts5yyact <= fts5YY_MAX_SHIFTREDUCE ){
      fts5yy_shift(fts5yypParser,fts5yyact,fts5yymajor,fts5yyminor);
#ifndef fts5YYNOERRORRECOVERY
      fts5yypParser->fts5yyerrcnt--;
#endif
      fts5yymajor = fts5YYNOCODE;
    }else if( fts5yyact <= fts5YY_MAX_REDUCE ){
      fts5yy_reduce(fts5yypParser,fts5yyact-fts5YY_MIN_REDUCE);


    }else{
      assert( fts5yyact == fts5YY_ERROR_ACTION );
      fts5yyminorunion.fts5yy0 = fts5yyminor;
#ifdef fts5YYERRORSYMBOL
      int fts5yymx;
#endif
#ifndef NDEBUG
................................................................................
    if( (iAdj+nToken)>nDocsize ) iAdj = nDocsize - nToken;
    if( iAdj<0 ) iAdj = 0;
    *piPos = iAdj;
  }

  return rc;
}











/*
** Implementation of snippet() function.
*/
static void fts5SnippetFunction(
  const Fts5ExtensionApi *pApi,   /* API offered by current FTS version */
  Fts5Context *pFts,              /* First arg to pass to pApi functions */
................................................................................
    sqlite3_result_error(pCtx, zErr, -1);
    return;
  }

  nCol = pApi->xColumnCount(pFts);
  memset(&ctx, 0, sizeof(HighlightContext));
  iCol = sqlite3_value_int(apVal[0]);
  ctx.zOpen = (const char*)sqlite3_value_text(apVal[1]);
  ctx.zClose = (const char*)sqlite3_value_text(apVal[2]);
  zEllips = (const char*)sqlite3_value_text(apVal[3]);
  nToken = sqlite3_value_int(apVal[4]);

  iBestCol = (iCol>=0 ? iCol : 0);
  nPhrase = pApi->xPhraseCount(pFts);
  aSeen = sqlite3_malloc(nPhrase);
  if( aSeen==0 ){
    rc = SQLITE_NOMEM;
................................................................................
#define fts5ExprNodeNext(a,b,c,d) (b)->xNext((a), (b), (c), (d))

/*
** An instance of the following structure represents a single search term
** or term prefix.
*/
struct Fts5ExprTerm {
  int bPrefix;                    /* True for a prefix term */

  char *zTerm;                    /* nul-terminated term */
  Fts5IndexIter *pIter;           /* Iterator for this term */
  Fts5ExprTerm *pSynonym;         /* Pointer to first in list of synonyms */
};

/*
** A phrase. One or more terms that must appear in a contiguous sequence
................................................................................
    case '{':  tok = FTS5_LCP;   break;
    case '}':  tok = FTS5_RCP;   break;
    case ':':  tok = FTS5_COLON; break;
    case ',':  tok = FTS5_COMMA; break;
    case '+':  tok = FTS5_PLUS;  break;
    case '*':  tok = FTS5_STAR;  break;
    case '-':  tok = FTS5_MINUS; break;

    case '\0': tok = FTS5_EOF;   break;

    case '"': {
      const char *z2;
      tok = FTS5_STRING;

      for(z2=&z[1]; 1; z2++){
................................................................................
  int *pbMatch                    /* OUT: Set to true if really a match */
){
  Fts5PoslistWriter writer = {0};
  Fts5PoslistReader aStatic[4];
  Fts5PoslistReader *aIter = aStatic;
  int i;
  int rc = SQLITE_OK;

  
  fts5BufferZero(&pPhrase->poslist);

  /* If the aStatic[] array is not large enough, allocate a large array
  ** using sqlite3_malloc(). This approach could be improved upon. */
  if( pPhrase->nTerm>ArraySize(aStatic) ){
    int nByte = sizeof(Fts5PoslistReader) * pPhrase->nTerm;
................................................................................
          }
          if( pPos->iPos>iAdj ) iPos = pPos->iPos-i;
        }
      }
    }while( bMatch==0 );

    /* Append position iPos to the output */

    rc = sqlite3Fts5PoslistWriterAppend(&pPhrase->poslist, &writer, iPos);
    if( rc!=SQLITE_OK ) goto ismatch_out;


    for(i=0; i<pPhrase->nTerm; i++){
      if( sqlite3Fts5PoslistReaderNext(&aIter[i]) ) goto ismatch_out;
    }
  }

 ismatch_out:
................................................................................
    int i;

    /* Check that each phrase in the nearset matches the current row.
    ** Populate the pPhrase->poslist buffers at the same time. If any
    ** phrase is not a match, break out of the loop early.  */
    for(i=0; rc==SQLITE_OK && i<pNear->nPhrase; i++){
      Fts5ExprPhrase *pPhrase = pNear->apPhrase[i];
      if( pPhrase->nTerm>1 || pPhrase->aTerm[0].pSynonym || pNear->pColset ){


        int bMatch = 0;
        rc = fts5ExprPhraseIsMatch(pNode, pPhrase, &bMatch);
        if( bMatch==0 ) break;
      }else{
        Fts5IndexIter *pIter = pPhrase->aTerm[0].pIter;
        fts5BufferSet(&rc, &pPhrase->poslist, pIter->nData, pIter->pData);
      }
................................................................................
  int bMatch;                     /* True if all terms are at the same rowid */
  const int bDesc = pExpr->bDesc;

  /* Check that this node should not be FTS5_TERM */
  assert( pNear->nPhrase>1 
       || pNear->apPhrase[0]->nTerm>1 
       || pNear->apPhrase[0]->aTerm[0].pSynonym

  );

  /* Initialize iLast, the "lastest" rowid any iterator points to. If the
  ** iterator skips through rowids in the default ascending order, this means
  ** the maximum rowid. Or, if the iterator is "ORDER BY rowid DESC", then it
  ** means the minimum rowid.  */
  if( pLeft->aTerm[0].pSynonym ){
................................................................................
        sqlite3_free(pSyn);
      }
    }
    if( pPhrase->poslist.nSpace>0 ) fts5BufferFree(&pPhrase->poslist);
    sqlite3_free(pPhrase);
  }
}











/*
** If argument pNear is NULL, then a new Fts5ExprNearset object is allocated
** and populated with pPhrase. Or, if pNear is not NULL, phrase pPhrase is
** appended to it and the results returned.
**
** If an OOM error occurs, both the pNear and pPhrase objects are freed and
................................................................................
        const char *zTerm = p->zTerm;
        rc = fts5ParseTokenize((void*)&sCtx, tflags, zTerm, (int)strlen(zTerm),
            0, 0);
        tflags = FTS5_TOKEN_COLOCATED;
      }
      if( rc==SQLITE_OK ){
        sCtx.pPhrase->aTerm[i].bPrefix = pOrig->aTerm[i].bPrefix;

      }
    }
  }else{
    /* This happens when parsing a token or quoted phrase that contains
    ** no token characters at all. (e.g ... MATCH '""'). */
    sCtx.pPhrase = sqlite3Fts5MallocZero(&rc, sizeof(Fts5ExprPhrase));
  }
................................................................................
    pNew->pConfig = pExpr->pConfig;
    pNew->nPhrase = 1;
    pNew->apExprPhrase[0] = sCtx.pPhrase;
    pNew->pRoot->pNear->apPhrase[0] = sCtx.pPhrase;
    pNew->pRoot->pNear->nPhrase = 1;
    sCtx.pPhrase->pNode = pNew->pRoot;


    if( pOrig->nTerm==1 && pOrig->aTerm[0].pSynonym==0 ){


      pNew->pRoot->eType = FTS5_TERM;
      pNew->pRoot->xNext = fts5ExprNodeNext_TERM;
    }else{
      pNew->pRoot->eType = FTS5_STRING;
      pNew->pRoot->xNext = fts5ExprNodeNext_STRING;
    }
  }else{
................................................................................

static void fts5ExprAssignXNext(Fts5ExprNode *pNode){
  switch( pNode->eType ){
    case FTS5_STRING: {
      Fts5ExprNearset *pNear = pNode->pNear;
      if( pNear->nPhrase==1 && pNear->apPhrase[0]->nTerm==1 
       && pNear->apPhrase[0]->aTerm[0].pSynonym==0

      ){
        pNode->eType = FTS5_TERM;
        pNode->xNext = fts5ExprNodeNext_TERM;
      }else{
        pNode->xNext = fts5ExprNodeNext_STRING;
      }
      break;
................................................................................
          pNear->apPhrase[iPhrase]->pNode = pRet;
          if( pNear->apPhrase[iPhrase]->nTerm==0 ){
            pRet->xNext = 0;
            pRet->eType = FTS5_EOF;
          }
        }

        if( pParse->pConfig->eDetail!=FTS5_DETAIL_FULL 

         && (pNear->nPhrase!=1 || pNear->apPhrase[0]->nTerm>1)


        ){
          assert( pParse->rc==SQLITE_OK );
          pParse->rc = SQLITE_ERROR;
          assert( pParse->zErr==0 );
          pParse->zErr = sqlite3_mprintf(
              "fts5: %s queries are not supported (detail!=full)", 
              pNear->nPhrase==1 ? "phrase": "NEAR"
          );
          sqlite3_free(pRet);
          pRet = 0;
        }

      }else{
        fts5ExprAddChildren(pRet, pLeft);
        fts5ExprAddChildren(pRet, pRight);
      }
    }
  }

................................................................................
  if( p2->n ){
    i64 iLastRowid = 0;
    Fts5DoclistIter i1;
    Fts5DoclistIter i2;
    Fts5Buffer out = {0, 0, 0};
    Fts5Buffer tmp = {0, 0, 0};







    if( sqlite3Fts5BufferSize(&p->rc, &out, p1->n + p2->n) ) return;
    fts5DoclistIterInit(p1, &i1);
    fts5DoclistIterInit(p2, &i2);

    while( 1 ){
      if( i1.iRowid<i2.iRowid ){
        /* Copy entry from i1 */
        fts5MergeAppendDocid(&out, iLastRowid, i1.iRowid);
................................................................................
      fts5MergeAppendDocid(&out, iLastRowid, i1.iRowid);
      fts5BufferSafeAppendBlob(&out, i1.aPoslist, i1.aEof - i1.aPoslist);
    }
    else if( i2.aPoslist ){
      fts5MergeAppendDocid(&out, iLastRowid, i2.iRowid);
      fts5BufferSafeAppendBlob(&out, i2.aPoslist, i2.aEof - i2.aPoslist);
    }


    fts5BufferSet(&p->rc, p1, out.n, out.p);
    fts5BufferFree(&tmp);
    fts5BufferFree(&out);
  }
}

................................................................................
static void fts5SourceIdFunc(
  sqlite3_context *pCtx,          /* Function call context */
  int nArg,                       /* Number of args */
  sqlite3_value **apUnused        /* Function arguments */
){
  assert( nArg==0 );
  UNUSED_PARAM2(nArg, apUnused);
  sqlite3_result_text(pCtx, "fts5: 2017-10-24 18:55:49 1a584e499906b5c87ec7d43d4abce641fdf017c42125b083109bc77c4de48827", -1, SQLITE_TRANSIENT);
}

static int fts5Init(sqlite3 *db){
  static const sqlite3_module fts5Mod = {
    /* iVersion      */ 2,
    /* xCreate       */ fts5CreateMethod,
    /* xConnect      */ fts5ConnectMethod,
................................................................................
#endif
  return rc;
}
#endif /* SQLITE_CORE */
#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_STMTVTAB) */

/************** End of stmt.c ************************************************/
#if __LINE__!=205346
#undef SQLITE_SOURCE_ID
#define SQLITE_SOURCE_ID      "2017-10-24 18:55:49 1a584e499906b5c87ec7d43d4abce641fdf017c42125b083109bc77c4de4alt2"
#endif
/* Return the source-id for this library */
SQLITE_API const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; }
/************************** End of sqlite3.c ******************************/


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1
2
3
4
5
6
7
8
9
10
....
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
....
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
....
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
....
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174

2175
2176
2177
2178
2179
2180
2181
....
3080
3081
3082
3083
3084
3085
3086

3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
....
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
....
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
....
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
.....
13179
13180
13181
13182
13183
13184
13185

13186
13187
13188
13189
13190
13191
13192
.....
13524
13525
13526
13527
13528
13529
13530
13531
13532
13533
13534
13535
13536
13537
13538
13539
13540
.....
13878
13879
13880
13881
13882
13883
13884
13885
13886
13887
13888
13889
13890
13891
13892
13893
13894
13895
13896
13897
13898
13899
13900
13901
13902
13903
13904
13905
13906
13907
13908
13909
13910
13911
13912
13913
13914
13915
13916
13917
13918
13919
13920

13921
13922
13923
13924
13925
13926
13927
13928
13929
13930
13931
13932
13933
13934
13935
13936
13937
13938
13939
13940
13941
13942
13943
13944
13945
13946
13947
13948
13949
13950
13951
13952
13953
13954
13955
13956
13957
13958
13959
13960
13961
13962
13963
13964
13965
.....
13976
13977
13978
13979
13980
13981
13982
13983
13984
13985
13986
13987
13988
13989
13990
13991

13992
13993
13994
13995
13996
13997
13998
13999
.....
15245
15246
15247
15248
15249
15250
15251
15252
15253
15254
15255
15256
15257
15258
15259
.....
15320
15321
15322
15323
15324
15325
15326
15327
15328
15329
15330
15331
15332
15333
15334
15335
15336
.....
15455
15456
15457
15458
15459
15460
15461
15462
15463
15464
15465
15466
15467
15468
15469
.....
16000
16001
16002
16003
16004
16005
16006
16007
16008
16009
16010
16011
16012
16013
16014
.....
16231
16232
16233
16234
16235
16236
16237
16238
16239
16240
16241
16242
16243
16244
16245
.....
16255
16256
16257
16258
16259
16260
16261
16262
16263
16264
16265
16266
16267
16268
16269
16270
16271
16272
.....
16330
16331
16332
16333
16334
16335
16336











16337
16338
16339
16340
16341
16342
16343
.....
16527
16528
16529
16530
16531
16532
16533
16534
16535
16536
16537
16538
16539
16540
16541
.....
16567
16568
16569
16570
16571
16572
16573

16574
16575
16576
16577
16578
16579
16580
.....
16597
16598
16599
16600
16601
16602
16603
16604
16605
16606
16607
16608
16609
16610
16611
.....
16802
16803
16804
16805
16806
16807
16808
16809
16810
16811
16812
16813
16814
16815
16816
.....
17030
17031
17032
17033
17034
17035
17036
17037
17038
17039
17040
17041
17042
17043
17044
.....
17250
17251
17252
17253
17254
17255
17256
17257
17258
17259
17260
17261
17262
17263
17264
.....
17341
17342
17343
17344
17345
17346
17347
17348
17349
17350
17351
17352
17353
17354
17355
.....
17409
17410
17411
17412
17413
17414
17415
17416
17417
17418
17419
17420
17421
17422
17423
17424
17425
17426
17427
17428
.....
17480
17481
17482
17483
17484
17485
17486
17487
17488
17489
17490
17491
17492
17493
17494
.....
17510
17511
17512
17513
17514
17515
17516
17517
17518
17519
17520
17521
17522
17523
17524
.....
17582
17583
17584
17585
17586
17587
17588
17589
17590
17591
17592
17593
17594
17595
17596
17597
17598
17599
17600
17601
17602
17603
17604
17605
.....
17715
17716
17717
17718
17719
17720
17721
17722
17723
17724
17725
17726
17727
17728
17729
.....
17731
17732
17733
17734
17735
17736
17737
17738
17739
17740
17741
17742
17743
17744
17745
17746
17747
17748
17749
17750
17751
17752
.....
18168
18169
18170
18171
18172
18173
18174
18175
18176
18177
18178
18179
18180
18181
18182
18183
18184
.....
18893
18894
18895
18896
18897
18898
18899
18900
18901
18902
18903
18904
18905
18906
18907
.....
19538
19539
19540
19541
19542
19543
19544
19545
19546
19547
19548
19549
19550
19551
19552
.....
23443
23444
23445
23446
23447
23448
23449
23450
23451
23452
23453
23454
23455
23456
23457
23458
23459
23460
23461
23462
23463
23464
23465
23466
23467
23468
23469
23470
23471
23472
23473
23474
23475
23476
23477
23478
23479
23480
23481
23482
23483
23484
23485
23486
23487
23488
23489
23490
23491
23492
23493
23494
23495
23496
23497
23498
23499
23500
23501
23502
23503
23504
23505
23506
23507
23508
23509
23510
23511
23512
23513
23514
23515
23516
23517
23518
23519
23520
23521
23522
23523
23524
23525
23526
23527
23528
23529
23530
23531
23532
23533
23534
23535
23536
23537
23538
23539
23540
23541
23542
23543
23544
23545
23546
23547
23548
23549
23550
23551
23552
23553
23554
23555
23556
23557
23558
23559
23560
23561
23562
23563
23564
23565
23566
23567
23568
23569
23570
23571
23572
23573
23574
23575
23576
23577
23578
23579
23580
23581
23582
23583
23584
23585
23586
23587
23588
23589
23590
23591
23592
23593
23594
23595
23596
23597
23598
23599
23600
23601
23602
23603
23604
23605
23606
23607
23608
23609
23610
23611
23612
23613
23614
23615
23616
23617
23618
23619
23620
23621
23622
23623
23624
23625
23626
23627
23628
23629
23630
23631
23632
23633
23634
23635
23636
23637
23638
23639
23640
23641
23642
23643
.....
23645
23646
23647
23648
23649
23650
23651
23652
23653
23654
23655
23656
23657
23658
23659
23660
23661
23662
23663
.....
23775
23776
23777
23778
23779
23780
23781
23782
23783
23784
23785
23786
23787
23788
23789
.....
25707
25708
25709
25710
25711
25712
25713
25714
25715
25716
25717
25718
25719
25720
25721
25722
25723
25724
25725
25726
25727
25728
25729
25730
25731
25732
25733
.....
26891
26892
26893
26894
26895
26896
26897
26898
26899
26900
26901
26902
26903
26904
26905
26906
26907
26908
26909
26910
26911
26912
26913
.....
27072
27073
27074
27075
27076
27077
27078

27079
27080
27081
27082
27083
27084
27085
.....
27128
27129
27130
27131
27132
27133
27134
27135
27136
27137
27138
27139
27140



27141
27142
27143
27144
27145
27146
27147
.....
27426
27427
27428
27429
27430
27431
27432
27433
27434
27435
27436
27437
27438
27439
27440
27441
27442
27443
27444
27445
27446
27447
27448
27449
27450
27451
27452
27453
.....
28728
28729
28730
28731
28732
28733
28734
28735
28736
28737
28738
28739
28740
28741
28742
28743
28744
28745
28746
28747
28748
28749
28750
28751
28752
28753
28754
28755
28756
28757
28758
28759
.....
28814
28815
28816
28817
28818
28819
28820
28821
28822
28823
28824
28825
28826
28827
28828
28829
28830
28831
28832
28833
28834
28835
28836
28837
28838
28839
28840
28841
28842
28843
28844
28845
28846
.....
28902
28903
28904
28905
28906
28907
28908

28909
28910
28911
28912
28913
28914
28915
28916
28917
28918
28919
.....
28925
28926
28927
28928
28929
28930
28931
28932



28933
28934
28935
28936
28937
28938
28939
.....
30383
30384
30385
30386
30387
30388
30389
30390
30391
30392
30393
30394
30395
30396
30397
30398
30399
30400
30401
30402
30403
30404
30405
30406
30407
30408
30409
30410
30411
30412
30413
30414
30415
30416
30417
30418
30419
30420
30421
30422
30423
30424
30425

30426
30427
30428
30429
30430
30431
30432
30433
30434
30435
30436
30437
30438
30439
30440
30441
30442
30443
30444
30445
30446
30447
30448
30449
30450
30451
30452
30453
30454
30455
30456
30457
30458
30459
30460
30461
30462
30463
30464
30465
30466
30467
30468
30469
30470
.....
31147
31148
31149
31150
31151
31152
31153
31154
31155
31156
31157
31158
31159
31160
31161
.....
31177
31178
31179
31180
31181
31182
31183
31184
31185
31186
31187
31188
31189
31190
31191
31192
31193
31194
31195
.....
34772
34773
34774
34775
34776
34777
34778
34779
34780
34781
34782
34783
34784
34785
34786
.....
34829
34830
34831
34832
34833
34834
34835
34836
34837
34838
34839
34840
34841
34842
34843
.....
34934
34935
34936
34937
34938
34939
34940
34941
34942
34943
34944
34945
34946
34947
34948
34949
34950
34951
34952
34953
34954
34955
34956
34957
34958
34959
34960
34961
34962
34963
34964
34965
34966
34967
34968
34969
34970
34971
34972
34973
34974
34975
34976
34977
34978
34979
34980
34981
34982
34983
34984
34985
34986
34987
34988
34989
34990
34991
34992
34993
34994
34995
34996
34997
34998
34999
35000
35001
35002
35003
35004
35005
.....
35031
35032
35033
35034
35035
35036
35037
35038
35039
35040
35041
35042
35043
35044
35045
35046
35047
.....
35074
35075
35076
35077
35078
35079
35080
35081
35082
35083
35084
35085
35086
35087
35088
35089
35090
35091
35092
35093
35094
35095
35096
35097
35098
35099
35100
35101

35102


35103
35104
35105
35106
35107
35108
35109
35110
35111
35112
35113
35114
35115
35116
35117
35118
35119
35120











35121
35122
35123
35124
35125
35126
35127
35128
.....
35138
35139
35140
35141
35142
35143
35144
35145
35146
35147
35148
35149
35150
35151
35152
.....
35190
35191
35192
35193
35194
35195
35196
35197
35198
35199
35200
35201
35202
35203
35204
35205
35206
35207
35208
.....
36463
36464
36465
36466
36467
36468
36469
36470
36471
36472
36473
36474
36475
36476
36477
.....
36533
36534
36535
36536
36537
36538
36539
36540
36541
36542
36543
36544
36545
36546
36547
.....
36568
36569
36570
36571
36572
36573
36574
36575
36576
36577
36578
36579
36580
36581
36582
36583
36584
36585
36586
36587
36588
36589
36590
36591
36592
36593
36594
36595
36596
36597
36598
36599
.....
36645
36646
36647
36648
36649
36650
36651
36652
36653
36654
36655
36656
36657
36658
36659
.....
42276
42277
42278
42279
42280
42281
42282
42283
42284
42285
42286
42287
42288
42289
42290
42291
42292
.....
42345
42346
42347
42348
42349
42350
42351
42352
42353
42354
42355
42356
42357
42358
42359
.....
42425
42426
42427
42428
42429
42430
42431
42432
42433
42434
42435
42436
42437
42438
42439
42440
42441
42442
42443
42444
42445
42446
42447
42448
42449
42450
42451
42452
42453
42454
42455
42456
42457
42458
42459
42460
42461
42462
42463
42464
42465
42466
42467
42468
42469
42470
42471
42472
42473
42474
42475
42476
42477
42478
42479
42480
42481
42482
42483
.....
42516
42517
42518
42519
42520
42521
42522
42523
42524
42525
42526
42527
42528
42529
42530
42531
42532
42533
42534
42535
42536
42537
42538
42539
42540
42541
42542
42543
42544
42545

42546
42547
42548
42549
42550
42551
42552
.....
42561
42562
42563
42564
42565
42566
42567
42568
42569
42570
42571
42572
42573
42574
42575
.....
42765
42766
42767
42768
42769
42770
42771
42772
42773
42774
42775
42776
42777
42778
42779
42780
42781
42782
42783
42784
42785
42786
42787
42788
42789
42790
42791
42792
42793
42794
42795
.....
42827
42828
42829
42830
42831
42832
42833
42834
42835
42836
42837
42838
42839
42840
42841
42842
42843
42844
42845
42846
42847
42848
42849
42850
42851
42852
42853
42854
42855
42856
42857
42858
42859
42860
42861
42862
42863
42864
42865
42866
42867
42868
42869
42870
42871
42872
42873
42874
42875
.....
42892
42893
42894
42895
42896
42897
42898
42899
42900
42901
42902
42903
42904
42905
42906
.....
45662
45663
45664
45665
45666
45667
45668
45669
45670
45671
45672
45673
45674
45675
45676
45677

45678
45679
45680
45681
45682
45683
45684
.....
53463
53464
53465
53466
53467
53468
53469
53470
53471
53472
53473
53474
53475
53476
53477
.....
55650
55651
55652
55653
55654
55655
55656
55657
55658
55659
55660
55661
55662
55663
55664
55665
55666
55667
.....
55794
55795
55796
55797
55798
55799
55800
55801
55802
55803
55804
55805
55806
55807
55808
55809
55810
55811
55812
55813
55814
55815
55816
55817
55818
55819
.....
55929
55930
55931
55932
55933
55934
55935

55936
55937
55938
55939
55940
55941
55942
.....
55974
55975
55976
55977
55978
55979
55980
55981
55982
55983
55984
55985
55986
55987
55988
.....
56063
56064
56065
56066
56067
56068
56069
56070
56071
56072
56073
56074
56075
56076
56077
56078
56079
56080
56081
.....
56100
56101
56102
56103
56104
56105
56106
56107
56108
56109
56110
56111
56112
56113
56114
56115
56116
56117
56118
56119
56120
.....
56628
56629
56630
56631
56632
56633
56634

56635
56636
56637
56638
56639
56640
56641
56642
56643
56644
56645
56646

56647
56648
56649
56650
56651
56652
56653
56654
56655
56656
56657
56658
56659
56660
56661
56662
56663
56664
.....
56788
56789
56790
56791
56792
56793
56794
56795
56796
56797
56798
56799
56800
56801
56802
56803
56804
56805
56806
56807
56808
56809
56810
56811
56812
56813
56814
56815
56816
56817
56818
.....
57597
57598
57599
57600
57601
57602
57603
57604
57605
57606
57607
57608
57609
57610
57611
57612
57613
57614
57615
57616
.....
57626
57627
57628
57629
57630
57631
57632
57633

57634
57635
57636
57637
57638
57639
57640
57641
57642
57643
57644
57645
57646
57647
57648
57649
57650
57651
57652
57653
57654
57655
57656
57657
57658
57659
57660
57661
57662
57663
57664
57665
57666
57667
57668
57669
57670
57671
57672
57673
57674
57675
57676
.....
57692
57693
57694
57695
57696
57697
57698
57699
57700
57701
57702
57703
57704
57705
57706
57707
57708
57709
57710
57711
57712
57713
57714
57715


57716
57717
57718
57719
57720
57721
57722
57723
57724
57725
57726
57727
57728
57729
57730
57731
57732
57733
57734
57735
57736
57737
57738
57739
57740
57741
57742
57743
57744
57745
57746
57747
57748
57749
57750
57751
57752
57753
57754
57755
57756
57757
57758
57759
57760
57761
57762
57763
57764
57765
57766
57767
57768
57769
57770
57771
57772
57773
57774
57775
57776
57777
57778
57779
57780
57781
57782
57783
57784
57785
57786
57787
57788
57789
57790
57791
57792
57793
57794
57795
57796
57797
57798
57799
57800
57801
57802
57803
57804
57805
57806
57807
57808
57809
57810
57811
57812
57813
57814
57815
57816
57817
57818
57819
57820
57821
57822
57823
57824
57825
57826
57827
57828
57829
57830
57831
57832
57833
57834
57835
57836
57837
57838
57839
57840
57841
57842
57843
57844
57845
57846
57847
57848
57849
57850
57851
57852
57853
57854
57855
57856
57857
57858
57859
57860
57861
57862
57863
57864
57865
57866
57867
57868
57869
57870
57871
57872
57873
57874
57875
57876
57877
57878
57879
57880
57881
57882
57883
57884
57885
57886
57887
57888
57889
57890
57891
57892
.....
57894
57895
57896
57897
57898
57899
57900
57901
57902
57903
57904
57905
57906
57907
57908
.....
57940
57941
57942
57943
57944
57945
57946
57947
57948
57949
57950
57951
57952
57953
57954
57955
57956
.....
57971
57972
57973
57974
57975
57976
57977
57978
57979
57980
57981
57982
57983
57984
57985
57986
57987
57988
.....
58003
58004
58005
58006
58007
58008
58009
58010
58011
58012
58013
58014
58015
58016
58017
58018
58019
58020

58021
58022
58023
58024
58025
58026
58027
.....
58084
58085
58086
58087
58088
58089
58090
58091
58092
58093
58094
58095
58096
58097
58098
.....
58356
58357
58358
58359
58360
58361
58362
58363
58364
58365
58366
58367
58368
58369
58370
.....
58419
58420
58421
58422
58423
58424
58425
58426
58427
58428
58429
58430
58431
58432
58433
58434
.....
59196
59197
59198
59199
59200
59201
59202
59203
59204
59205
59206
59207
59208
59209
59210
59211
59212
59213
59214
59215
59216
59217
59218
59219
59220
59221
59222
59223
59224
59225
59226
59227
.....
60433
60434
60435
60436
60437
60438
60439
60440
60441
60442
60443
60444
60445
60446
60447
60448
60449
60450
60451
60452
60453
60454
60455
60456
60457
60458
60459
60460
60461
60462
60463
60464
60465
60466
60467
60468
60469
60470
60471
.....
61746
61747
61748
61749
61750
61751
61752
61753
61754
61755
61756
61757
61758
61759
61760
.....
61780
61781
61782
61783
61784
61785
61786
61787
61788
61789
61790
61791
61792
61793
61794
61795
61796
61797
61798
61799
61800
.....
61806
61807
61808
61809
61810
61811
61812
61813
61814
61815
61816
61817
61818
61819
61820
.....
61850
61851
61852
61853
61854
61855
61856
61857
61858
61859
61860
61861
61862
61863
61864
.....
61873
61874
61875
61876
61877
61878
61879
61880
61881
61882
61883
61884
61885
61886
61887
.....
61921
61922
61923
61924
61925
61926
61927
61928
61929
61930
61931
61932
61933
61934
61935
.....
62011
62012
62013
62014
62015
62016
62017
62018
62019
62020
62021
62022
62023
62024
62025
62026
62027
62028
62029
62030
62031
62032
62033
62034
62035
62036
62037
62038
62039
62040
62041
62042
62043
62044
62045
62046
62047
62048
62049
62050
62051
62052
62053
62054
62055
62056
62057
62058
62059
62060
62061
62062
62063
62064
62065
62066
62067
62068
62069
62070
62071
62072
.....
62131
62132
62133
62134
62135
62136
62137
62138
62139
62140
62141
62142
62143
62144
62145
.....
62172
62173
62174
62175
62176
62177
62178
62179
62180
62181
62182
62183
62184
62185
62186
.....
62191
62192
62193
62194
62195
62196
62197
62198
62199
62200
62201
62202
62203
62204
62205
.....
62219
62220
62221
62222
62223
62224
62225
62226
62227
62228
62229
62230
62231
62232
62233
62234
62235
62236
62237
62238
.....
62242
62243
62244
62245
62246
62247
62248
62249
62250
62251
62252
62253
62254
62255
62256
62257
62258
62259
62260
62261
62262
62263
62264
62265
62266
62267
62268
62269
62270
62271
62272
62273
62274
62275
62276
62277
62278
62279
62280
62281
62282
62283
62284
62285
62286
62287
.....
63804
63805
63806
63807
63808
63809
63810
63811
63812
63813
63814
63815
63816
63817
63818
.....
63823
63824
63825
63826
63827
63828
63829
63830
63831
63832
63833
63834
63835
63836
63837
.....
63841
63842
63843
63844
63845
63846
63847
63848
63849
63850
63851
63852
63853
63854
63855
.....
64753
64754
64755
64756
64757
64758
64759
64760
64761
64762
64763
64764
64765
64766
64767
64768
64769
64770
64771
64772
64773
64774
64775
64776
64777
64778
64779
64780
.....
64953
64954
64955
64956
64957
64958
64959
64960
64961
64962
64963
64964
64965
64966
64967
.....
65101
65102
65103
65104
65105
65106
65107
65108
65109
65110
65111
65112
65113
65114
65115
.....
65379
65380
65381
65382
65383
65384
65385
65386
65387
65388
65389
65390
65391
65392
65393
.....
65652
65653
65654
65655
65656
65657
65658
65659
65660
65661
65662
65663
65664
65665
65666
.....
65726
65727
65728
65729
65730
65731
65732
65733
65734
65735
65736
65737
65738
65739
65740
.....
66529
66530
66531
66532
66533
66534
66535
66536
66537
66538
66539
66540
66541
66542
66543
.....
71455
71456
71457
71458
71459
71460
71461


71462
71463
71464
71465
71466
71467
71468
71469
71470
71471
71472
71473
71474
71475
71476
71477
71478
71479


71480
71481
71482
71483
71484
71485
71486
.....
72426
72427
72428
72429
72430
72431
72432
72433
72434
72435
72436
72437
72438
72439
72440
72441
72442
72443
72444
.....
72525
72526
72527
72528
72529
72530
72531
72532
72533
72534
72535
72536
72537
72538
72539
72540
72541
72542
.....
74514
74515
74516
74517
74518
74519
74520
74521
74522
74523
74524
74525
74526
74527
74528
74529
74530
74531
74532
74533
74534
74535
74536
74537
74538
74539
74540
74541
74542
.....
74543
74544
74545
74546
74547
74548
74549
74550
74551
74552
74553
74554
74555
74556
74557
.....
74563
74564
74565
74566
74567
74568
74569

74570
74571
74572







74573
74574
74575
74576
74577
74578
74579
74580
74581
.....
74582
74583
74584
74585
74586
74587
74588




74589







74590
74591
74592
74593
74594
74595
74596
74597
74598
74599
74600
74601
74602
74603
74604
74605
74606
74607
74608
74609
74610
74611
74612
74613
74614
74615
74616
74617
74618
74619
74620
74621
74622
74623
74624
74625
74626
74627
74628
74629
74630
74631
74632
74633
74634
74635
74636
74637
74638
74639
74640
74641
74642
74643
74644
74645
74646
74647
74648
74649
74650
74651
74652
74653
74654
74655
74656
74657
74658
74659
74660
74661
74662
74663
74664
74665
74666
74667
74668
74669
74670
74671
74672
74673
74674
74675
74676
74677
74678
74679
74680
74681
74682
74683
74684
74685
74686
74687
74688
74689
74690
74691
74692
74693
74694
74695
74696
74697
74698
74699
.....
75155
75156
75157
75158
75159
75160
75161
75162
75163
75164
75165
75166
75167
75168
75169
.....
75931
75932
75933
75934
75935
75936
75937
75938
75939
75940
75941
75942
75943
75944
75945
.....
78356
78357
78358
78359
78360
78361
78362
78363
78364
78365
78366
78367
78368
78369
78370
78371
78372
78373
78374
78375
78376
78377
78378
78379
78380
78381
78382
78383
78384
78385
78386
78387
78388
.....
82231
82232
82233
82234
82235
82236
82237
82238
82239
82240
82241
82242
82243
82244
82245
82246
82247
82248
82249
82250
82251
82252
82253
82254
82255
82256
82257
82258
82259
82260
82261
82262
82263
82264
82265
82266
82267
82268
82269
82270
82271
82272
82273
82274
.....
86575
86576
86577
86578
86579
86580
86581
86582
86583
86584
86585
86586
86587
86588
86589
86590
86591
86592
86593
86594
86595
86596
86597
86598
86599
86600
.....
86608
86609
86610
86611
86612
86613
86614
86615
86616
86617
86618
86619
86620
86621
86622
.....
86935
86936
86937
86938
86939
86940
86941

86942
86943
86944
86945
86946
86947
86948
86949
86950
86951
86952
86953
86954
86955
.....
86960
86961
86962
86963
86964
86965
86966
86967
86968
86969
86970
86971
86972
86973
86974
.....
86975
86976
86977
86978
86979
86980
86981
86982
86983
86984
86985
86986
86987
86988
86989
86990
86991
.....
87020
87021
87022
87023
87024
87025
87026
87027
87028
87029
87030
87031
87032
87033
87034
.....
90965
90966
90967
90968
90969
90970
90971

90972
90973
90974
90975
90976
90977
90978
.....
90981
90982
90983
90984
90985
90986
90987
90988
90989
90990
90991
90992
90993
90994
90995
90996

90997
90998
90999
91000
91001
91002
91003
.....
91632
91633
91634
91635
91636
91637
91638
91639
91640
91641
91642
91643
91644
91645
91646
91647
.....
92232
92233
92234
92235
92236
92237
92238
92239

92240
92241
92242
92243
92244
92245
92246
.....
93233
93234
93235
93236
93237
93238
93239

93240
93241
93242
93243
93244
93245
93246
.....
93521
93522
93523
93524
93525
93526
93527
93528
93529
93530
93531
93532
93533
93534
93535
.....
94031
94032
94033
94034
94035
94036
94037

94038
94039
94040
94041
94042
94043
94044
.....
94224
94225
94226
94227
94228
94229
94230
94231
94232
94233
94234
94235
94236
94237
94238

94239
94240

94241
94242
94243
94244
94245
94246
94247
.....
94666
94667
94668
94669
94670
94671
94672

94673
94674
94675
94676
94677
94678
94679
.....
94755
94756
94757
94758
94759
94760
94761
94762
94763
94764
94765
94766

94767
94768
94769
94770
94771
94772
94773
94774
94775
94776
94777
.....
95304
95305
95306
95307
95308
95309
95310
95311
95312
95313
95314
95315
95316
95317
95318
.....
95326
95327
95328
95329
95330
95331
95332
95333
95334
95335
95336
95337
95338

95339
95340
95341
95342
95343
95344
95345
95346
.....
96440
96441
96442
96443
96444
96445
96446
96447
96448
96449
96450
96451
96452
96453
96454
96455
96456
96457
96458
96459
96460
96461
96462
96463
96464
96465
96466
96467
96468
......
101132
101133
101134
101135
101136
101137
101138



101139
101140
101141
101142
101143
101144
101145
......
102698
102699
102700
102701
102702
102703
102704
102705
102706
102707
102708
102709
102710
102711
102712
102713
102714
102715
102716
102717
102718
102719
102720
102721
102722

102723
102724
102725
102726
102727
102728

102729
102730
102731
102732
102733
102734
102735
102736
102737
102738
102739
102740
102741
102742
......
103445
103446
103447
103448
103449
103450
103451




103452
103453
103454
103455
103456
103457
103458
103459
103460
103461
103462
103463
103464
103465
103466
103467
103468
103469
103470
103471
103472
......
103601
103602
103603
103604
103605
103606
103607
103608
103609
103610
103611
103612
103613
103614
103615
......
105333
105334
105335
105336
105337
105338
105339
105340
105341
105342
105343
105344
105345
105346
105347
105348
105349
105350
......
105845
105846
105847
105848
105849
105850
105851
105852
105853
105854
105855
105856
105857
105858
105859
105860
105861
105862
105863
105864
105865
105866
105867
105868
105869
105870
......
106042
106043
106044
106045
106046
106047
106048
106049
106050
106051
106052
106053
106054
106055
106056
......
106516
106517
106518
106519
106520
106521
106522
106523
106524
106525
106526
106527
106528
106529
106530
106531
......
106534
106535
106536
106537
106538
106539
106540
106541
106542
106543
106544
106545
106546
106547
106548
106549
......
106557
106558
106559
106560
106561
106562
106563

106564
106565
106566
106567
106568

106569
106570
106571
106572
106573
106574
106575
106576
106577
106578
106579
106580
106581
106582
106583
106584
106585
106586


106587
106588
106589
106590
106591
106592
106593
106594
106595
106596
106597
106598
106599
106600
106601

106602
106603
106604
106605
106606
106607
106608
106609
106610
106611
106612
106613
106614
106615

106616
106617
106618
106619
106620
106621
106622
106623
106624
106625
106626
106627



106628
106629
106630

106631
106632
106633

106634
106635
106636
106637

106638
106639







106640
106641
106642
106643
106644
106645
106646
......
106647
106648
106649
106650
106651
106652
106653
106654
106655
106656
106657
106658
106659
106660
106661
106662
106663
......
106693
106694
106695
106696
106697
106698
106699
106700
106701
106702
106703
106704
106705
106706
106707
......
106709
106710
106711
106712
106713
106714
106715

106716
106717
106718
106719
106720
106721
106722
106723
106724
106725
106726
106727
106728
106729
106730
106731
106732
106733
106734
106735
106736
106737
106738
106739
106740
106741
......
106776
106777
106778
106779
106780
106781
106782
106783
106784
106785
106786
106787
106788
106789
106790
106791
106792
106793
106794
106795
......
107025
107026
107027
107028
107029
107030
107031
107032
107033
107034
107035
107036
107037
107038
107039
107040
107041
107042
......
108070
108071
108072
108073
108074
108075
108076
108077
108078
108079
108080
108081
108082
108083
108084
108085
108086
108087
108088
108089
108090

108091
108092
108093
108094
108095
108096
108097
......
109171
109172
109173
109174
109175
109176
109177
109178
109179
109180
109181
109182
109183
109184
109185
109186
109187
109188
......
109997
109998
109999
110000
110001
110002
110003
110004
110005
110006
110007
110008
110009
110010
110011
......
110555
110556
110557
110558
110559
110560
110561
110562
110563
110564
110565
110566
110567
110568
110569
......
111605
111606
111607
111608
111609
111610
111611
111612
111613
111614
111615
111616
111617
111618
111619
111620
......
112267
112268
112269
112270
112271
112272
112273
112274
112275
112276
112277
112278
112279
112280
112281
......
112356
112357
112358
112359
112360
112361
112362
112363
112364
112365
112366
112367
112368
112369
112370
......
112705
112706
112707
112708
112709
112710
112711

112712
112713
112714
112715
112716
112717
112718
......
114182
114183
114184
114185
114186
114187
114188
114189
114190
114191
114192
114193
114194
114195
114196
114197
114198
114199
......
116221
116222
116223
116224
116225
116226
116227
116228
116229
116230
116231
116232
116233
116234
116235
......
118105
118106
118107
118108
118109
118110
118111
118112
118113
118114
118115
118116
118117
118118
118119
118120
......
118287
118288
118289
118290
118291
118292
118293


118294
118295
118296
118297
118298
118299
118300
118301
118302
118303
118304
118305
118306
118307
118308
118309
118310
118311
118312
118313
118314
118315
118316
118317
118318
118319
118320
118321
118322
118323
118324
118325
118326
118327
118328
118329
118330
118331
118332
118333
118334
118335
......
118608
118609
118610
118611
118612
118613
118614

118615
118616
118617
118618
118619
118620
118621
......
118640
118641
118642
118643
118644
118645
118646
118647

118648
118649
118650
118651
118652
118653
118654
......
118673
118674
118675
118676
118677
118678
118679

118680


118681
118682
118683
118684
118685
118686
118687
......
119915
119916
119917
119918
119919
119920
119921
119922
119923
119924

119925
119926
119927
119928
119929
119930
119931
119932


119933
119934
119935
119936
119937
119938
119939
......
120129
120130
120131
120132
120133
120134
120135
120136
120137
120138
120139
120140
120141
120142
120143
......
120238
120239
120240
120241
120242
120243
120244
120245
120246

120247
120248
120249
120250
120251
120252
120253
120254
120255
120256
120257
......
120403
120404
120405
120406
120407
120408
120409
120410
120411
120412
120413
120414
120415
120416
120417
120418
120419
120420
120421
120422
120423
120424
120425
120426
120427
120428
120429
120430
120431
120432
120433
120434
120435
120436
120437
120438
120439
120440
120441
120442
120443
120444
120445
120446
120447
120448
120449
120450
120451
120452
120453
120454
120455
120456
120457
120458
120459
120460
120461
120462
120463
120464
120465
120466
120467
120468
120469
120470
120471
120472
120473
120474
120475
120476
120477
120478
......
120594
120595
120596
120597
120598
120599
120600
120601
120602
120603
120604
120605
120606
120607
120608
120609
120610
120611

120612
120613
120614
120615
120616
120617
120618
120619
120620
120621
......
120700
120701
120702
120703
120704
120705
120706

120707
120708
120709
120710
120711
120712
120713
......
120735
120736
120737
120738
120739
120740
120741

120742
120743
120744
120745
120746
120747
120748
......
120861
120862
120863
120864
120865
120866
120867

120868
120869
120870

120871
120872
120873
120874
120875
120876
120877
......
120885
120886
120887
120888
120889
120890
120891
120892
120893
120894
120895
120896
120897
120898
120899
......
120900
120901
120902
120903
120904
120905
120906
120907
120908
120909
120910
120911
120912
120913
120914
120915
120916
120917
120918

120919
120920
120921
120922
120923
120924
120925
......
120947
120948
120949
120950
120951
120952
120953


120954
120955
120956
120957
120958
120959
120960
......
120962
120963
120964
120965
120966
120967
120968

120969
120970
120971
120972
120973
120974
120975
......
120989
120990
120991
120992
120993
120994
120995
120996
120997
120998
120999
121000
121001
121002
121003
......
121025
121026
121027
121028
121029
121030
121031


121032
121033
121034
121035
121036
121037
121038
121039
121040

121041
121042
121043
121044
121045
121046
121047
......
121512
121513
121514
121515
121516
121517
121518


121519
121520
121521
121522
121523
121524
121525
......
121901
121902
121903
121904
121905
121906
121907
121908
121909
121910
121911
121912

121913
121914
121915
121916
121917
121918
121919
......
121975
121976
121977
121978
121979
121980
121981
121982
121983
121984
121985
121986
121987
121988
121989
......
122039
122040
122041
122042
122043
122044
122045
122046
122047
122048
122049
122050
122051
122052
122053
122054
122055
......
122076
122077
122078
122079
122080
122081
122082









122083
122084
122085
122086
122087
122088
122089
......
122123
122124
122125
122126
122127
122128
122129

122130
122131
122132
122133
122134

122135
122136

122137
122138
122139
122140
122141
122142
122143
......
122427
122428
122429
122430
122431
122432
122433
122434
122435
122436
122437
122438
122439
122440
122441
122442
122443
122444
122445
122446
122447
122448
122449
122450
122451
122452
122453
122454
122455
122456
122457
122458
122459
122460
122461
122462
122463
122464
122465
122466
122467
122468
122469
122470
122471
122472
122473
122474
122475
122476
122477
122478
......
122595
122596
122597
122598
122599
122600
122601

122602
122603
122604
122605
122606
122607
122608
......
122850
122851
122852
122853
122854
122855
122856
122857
122858
122859
122860
122861
122862
122863
122864
122865
122866
122867
122868
122869
122870
122871
......
122964
122965
122966
122967
122968
122969
122970
122971
122972
122973
122974
122975
122976
122977
122978
......
122980
122981
122982
122983
122984
122985
122986
122987
122988
122989
122990
122991
122992
122993
122994
......
123110
123111
123112
123113
123114
123115
123116
123117
123118
123119
123120
123121
123122
123123
123124
123125
123126
123127
123128
123129
123130
123131
......
123653
123654
123655
123656
123657
123658
123659
123660
123661
123662
123663
123664
123665
123666
123667
123668
......
123741
123742
123743
123744
123745
123746
123747
123748
123749
123750
123751
123752
123753
123754
123755
123756
123757
123758
123759
123760
123761
123762
123763
123764
123765
123766
123767
123768
123769
123770
123771
123772
123773
123774
123775
......
124180
124181
124182
124183
124184
124185
124186
124187
124188
124189
124190
124191
124192
124193
124194
124195
124196
124197
124198
124199
124200
124201
124202
124203
124204
124205
124206
124207
124208
124209
124210
124211
124212
124213
124214
124215
124216
124217
124218
124219
124220
124221
124222
124223
124224
......
124440
124441
124442
124443
124444
124445
124446

124447
124448
124449
124450
124451
124452
124453
......
124501
124502
124503
124504
124505
124506
124507













































124508
124509
124510
124511
124512
124513
124514
124515
124516
124517
124518
124519
124520
124521
124522
124523
124524
124525

124526
124527
124528

124529
124530
124531
124532
124533
124534
124535
124536
124537
124538
124539
124540
124541

124542
124543
124544
124545
124546
124547
124548
......
124566
124567
124568
124569
124570
124571
124572
124573
124574
124575
124576
124577
124578
124579
124580
......
124806
124807
124808
124809
124810
124811
124812
124813
124814
124815
124816
124817
124818
124819
124820
......
125121
125122
125123
125124
125125
125126
125127
125128
125129
125130
125131
125132
125133
125134
125135
125136
125137
125138
125139
125140
125141
125142
125143
125144
125145
125146
125147
125148
125149
125150
125151
125152
125153
125154
125155
125156
125157
125158
125159
125160
125161
125162
125163
125164
125165
125166
125167
125168
125169
125170
125171
125172
125173
125174
125175
125176
125177
125178
125179
125180
125181
125182
125183
125184
125185
125186
125187
125188
125189
125190
125191
125192
125193
......
125196
125197
125198
125199
125200
125201
125202
125203
125204
125205
125206
125207
125208
125209
125210
125211
125212
125213
125214
125215
125216
125217
125218
......
125227
125228
125229
125230
125231
125232
125233
125234
125235
125236
125237
125238
125239
125240
125241
125242
125243
125244
125245
125246
125247
......
125252
125253
125254
125255
125256
125257
125258
125259
125260
125261
125262
125263
125264
125265
125266
125267
125268
125269
125270
125271
125272
......
125512
125513
125514
125515
125516
125517
125518
125519
125520
125521
125522
125523
125524
125525
125526
125527
125528
125529
125530
125531
125532
125533
125534
125535
125536
125537
125538
125539
125540
125541
......
125543
125544
125545
125546
125547
125548
125549
125550
125551
125552
125553
125554
125555
125556
125557
......
125661
125662
125663
125664
125665
125666
125667
125668
125669
125670
125671
125672
125673
125674
125675
125676
125677
125678
125679
......
125693
125694
125695
125696
125697
125698
125699
125700
125701
125702
125703
125704
125705
125706
125707
......
126012
126013
126014
126015
126016
126017
126018
126019
126020
126021
126022
126023
126024
126025
126026
126027
126028
......
126098
126099
126100
126101
126102
126103
126104
126105
126106
126107
126108
126109
126110
126111
126112
126113
126114
126115
126116
126117
126118
126119
126120
126121
......
126277
126278
126279
126280
126281
126282
126283
126284
126285
126286
126287
126288
126289
126290
126291
126292
126293
126294
126295
......
126665
126666
126667
126668
126669
126670
126671
126672
126673
126674
126675
126676
126677
126678
126679
126680
126681
126682
......
126728
126729
126730
126731
126732
126733
126734
126735
126736
126737
126738
126739
126740
126741
126742
......
126748
126749
126750
126751
126752
126753
126754
126755
126756
126757
126758
126759
126760
126761
126762
......
129133
129134
129135
129136
129137
129138
129139
129140
129141
129142
129143
129144
129145
129146
129147
......
129299
129300
129301
129302
129303
129304
129305
129306
129307
129308
129309
129310
129311
129312
129313
129314
129315
129316
129317
129318
129319
129320
129321
129322
129323
129324
129325
......
129381
129382
129383
129384
129385
129386
129387
129388
129389
129390
129391
129392
129393
129394
129395
129396
129397
129398
129399
129400
129401
129402
129403
129404
129405
129406
129407
129408
129409
129410
129411
129412
129413
129414
129415
129416
129417
129418
129419
129420
129421
129422
129423
129424
129425
129426
129427
129428
129429
129430
129431
129432
129433
129434
129435
129436
129437
129438
129439
129440
129441
129442
129443
129444
129445
129446
129447
129448
129449
129450
129451
129452
129453
129454
129455
129456
129457
129458
129459
129460
129461
129462
129463
129464
129465
129466
129467
129468
129469
129470
129471
129472
129473
129474
129475
129476
129477
129478
129479
129480
129481
129482
129483
129484
129485
129486
129487
129488
129489
129490
......
129540
129541
129542
129543
129544
129545
129546
129547
129548
129549
129550
129551
129552
129553

129554





129555
129556










129557























129558




129559





129560
129561


129562
129563
129564
129565
129566
129567
129568
129569
129570
......
130695
130696
130697
130698
130699
130700
130701
130702
130703
130704
130705
130706
130707
130708
130709
......
132196
132197
132198
132199
132200
132201
132202
132203
132204
132205
132206
132207
132208
132209
132210
......
132440
132441
132442
132443
132444
132445
132446
132447
132448
132449
132450
132451
132452
132453
132454
......
132763
132764
132765
132766
132767
132768
132769
132770
132771
132772
132773
132774
132775
132776
132777
132778
132779
132780
132781
132782
132783
132784
132785
132786
132787
132788
132789
132790
132791
......
133601
133602
133603
133604
133605
133606
133607
133608
133609
133610
133611
133612
133613
133614
133615
133616
133617
133618
133619
133620
133621
133622
133623
133624
133625
133626
133627
......
133655
133656
133657
133658
133659
133660
133661
133662
133663
133664
133665
133666
133667
133668
133669
133670
133671
133672
133673
133674
133675
133676
133677
133678
133679
133680
133681
133682
133683
133684
133685
133686
133687
133688
133689
133690
133691
133692
......
134627
134628
134629
134630
134631
134632
134633

134634
134635
134636
134637
134638
134639
134640
134641
134642
134643
134644
134645
134646
134647
134648

134649
134650
134651
134652
134653
134654
134655
......
135224
135225
135226
135227
135228
135229
135230
135231
135232
135233
135234
135235
135236
135237
135238
......
135633
135634
135635
135636
135637
135638
135639
135640
135641
135642
135643
135644
135645
135646
135647
135648
135649
135650
135651
135652
135653
135654
135655
135656
135657
......
135748
135749
135750
135751
135752
135753
135754




135755
135756
135757
135758
135759
135760
135761
......
135902
135903
135904
135905
135906
135907
135908
135909
135910
135911
135912
135913
135914
135915
135916
135917
135918
135919
135920
135921
135922
135923
135924
135925
135926
135927
135928
135929
135930
135931
135932
135933
135934
135935
135936
......
137463
137464
137465
137466
137467
137468
137469
137470
137471
137472
137473
137474
137475
137476
137477
137478
137479
137480
137481
137482
137483
137484
137485
137486
137487
137488
137489
137490
137491
137492
137493
137494
137495
137496
137497
137498
137499
137500
137501
137502
137503
137504
137505
137506
137507
137508
137509
137510
137511
137512
137513
137514
137515
137516
137517
137518
137519
137520
137521
137522
137523
137524
137525
137526
137527
137528
137529
137530
137531
137532
137533
137534
137535
137536
137537
137538
137539
137540
137541
137542
137543
137544
137545
137546
137547
137548
137549
137550
......
137691
137692
137693
137694
137695
137696
137697

137698
137699
137700
137701
137702
137703
137704
......
137754
137755
137756
137757
137758
137759
137760
137761
137762
137763
137764
137765
137766
137767
137768
......
137821
137822
137823
137824
137825
137826
137827
137828
137829
137830
137831
137832
137833
137834
137835
137836
......
137891
137892
137893
137894
137895
137896
137897
137898
137899
137900
137901
137902
137903
137904
137905
137906
137907
137908
137909
......
137994
137995
137996
137997
137998
137999
138000









138001
138002
138003
138004
138005
138006
138007
......
138037
138038
138039
138040
138041
138042
138043








138044
138045
138046
138047
138048
138049
138050
138051
138052
138053
138054
138055
138056
......
138060
138061
138062
138063
138064
138065
138066
138067


138068
138069


































138070
138071
138072
138073
138074
138075
138076
138077
138078
138079
138080














138081
138082
138083
138084
138085
138086
138087
......
138142
138143
138144
138145
138146
138147
138148
138149
138150
138151
138152


138153
138154
138155
138156
138157
138158
138159
138160
138161
138162
138163
138164
138165
138166
138167
138168
138169
138170
138171
138172
138173
138174
138175
138176
138177
138178
138179
138180
138181

138182
138183
138184
138185
138186
138187
138188
138189
138190
138191
138192
138193
138194
138195
138196


138197
138198
138199
138200
138201
138202
138203
138204
138205
138206
138207
138208
......
138224
138225
138226
138227
138228
138229
138230



138231
138232
138233
138234
138235
138236
138237
138238
138239
138240
138241
138242
138243
138244
138245
138246
138247

138248




138249
138250
138251
138252
138253

138254
138255
138256
138257
138258
138259
138260
138261
138262
138263
138264
138265
138266
138267
138268
138269
138270
138271
138272
138273
138274
138275
138276
138277
138278
138279
138280
138281
138282
138283
138284
138285
138286
138287
138288
138289
138290
138291
138292
138293
138294
138295
138296
138297
138298
138299
138300
138301
138302
138303
138304
138305
138306
138307
138308
138309
138310
138311
138312
138313
138314
138315
138316
138317
138318
138319
138320
138321
138322
138323
138324
138325
138326
138327
138328
138329
138330
138331
138332
138333
138334
138335
138336
138337
138338
138339
138340
138341
138342
138343
138344
138345
138346
138347
138348
138349
138350
138351
138352
138353
138354
138355
138356
138357
138358
138359
138360
138361
138362
138363
138364
138365
138366
138367
138368
138369
138370
138371
138372
138373
138374
138375
138376
138377
138378
138379
138380
138381
138382
138383
138384
138385
138386
138387
138388
138389
138390
138391
138392
138393
138394
138395
138396
138397
138398
138399
138400
138401
138402
138403
138404
138405
138406
138407
138408
138409
138410
138411
138412
138413
138414
138415
138416
138417
138418
138419
138420
138421
138422
138423
138424
138425
138426
138427
138428
138429
138430
138431
138432
138433
138434
138435
138436
138437
138438
138439
138440
138441
138442
138443
138444
138445
138446
138447
138448
138449
138450
138451
138452
138453
138454
138455
138456
138457
138458
138459
138460
138461
138462
138463
138464
138465
138466
138467
138468
138469
138470
138471
138472
138473
138474
138475
138476
138477
138478
138479
138480
138481
138482
138483
138484
138485
138486
138487
138488
138489
138490
138491
138492
138493
138494
138495
138496
138497
138498
138499
138500
138501
138502
138503
138504
138505
138506
138507
138508
138509
138510
138511
138512
138513
138514
138515
138516
138517
138518
138519
138520
138521
138522
138523
138524
138525
138526
138527
138528
138529
138530
138531
138532
138533
138534
138535
138536
138537
138538
138539
138540
138541
138542
138543
138544
138545
138546
138547
138548
138549
138550
138551
138552
138553
138554
138555
138556
138557
138558
138559
138560
138561
138562
138563
138564
138565
138566
138567
138568
138569
138570
138571
138572
138573
138574
138575
138576
138577
138578
138579
138580
138581
138582
138583
138584
138585
138586
138587
138588
138589
138590
138591
138592
138593
138594
138595
138596
138597
138598
138599
138600
138601
138602
138603
138604
138605
138606
138607
138608
138609
138610
138611
138612
138613
138614
138615
138616
138617
138618
138619
138620
138621
138622
138623
138624
138625
138626
138627
138628
138629
138630
138631
138632
138633
138634
138635
138636
138637
138638
138639
138640
138641
138642
138643
138644
138645
138646
138647
138648
138649
138650
138651
138652
138653
138654
138655
138656
138657
138658
138659
138660
138661
138662
138663
138664
138665
138666
138667
138668
138669
138670
138671
138672
138673
138674
138675
138676
138677
138678
138679
138680
138681
138682
138683
138684
138685
138686
138687
138688
138689
138690
138691
138692
138693
138694
138695
138696
138697
138698
138699
138700
138701
138702
138703
138704
138705
138706
138707
138708
138709
138710
138711
138712
138713
138714
138715
138716
138717
138718
138719
138720
138721
138722
138723
138724
138725
138726
138727
138728
138729
138730
138731
138732
138733
138734
138735
138736
138737
138738
138739
138740
138741
......
138912
138913
138914
138915
138916
138917
138918
138919
138920
138921
138922
138923
138924
138925
138926
138927
138928
138929
138930
138931
138932
138933
138934
138935
138936
138937
138938
138939
138940
138941
138942
138943
138944
138945
138946
138947
138948
138949
138950
138951
138952
138953
138954
138955
138956
138957
138958
138959
138960
138961
138962
138963
138964
138965
138966
138967
138968
138969
138970
138971
138972
138973
138974
138975
138976
138977
138978
138979
138980
138981
138982
138983
138984
138985
138986
138987
138988
138989
138990
138991
138992
138993
138994
138995
138996
138997
138998
138999
139000
139001
139002
139003
139004
139005
139006
139007
139008
139009
139010
139011
139012
139013
139014
139015
139016
139017
139018
139019
139020
139021
139022
139023
139024
139025
139026
139027
139028
139029
139030
139031
139032
139033
139034
139035
139036
139037
139038
139039
139040
139041
139042
139043
139044
139045
139046
139047
139048
139049
139050
139051
139052
139053
139054
139055
139056
139057
139058
139059
139060
139061
139062
139063
139064
139065
139066
139067
139068
139069
139070
139071
139072
139073
139074
139075
139076
139077
139078

139079
139080
139081
139082
139083
139084
139085



139086
139087
139088
139089
139090
139091
139092
139093
139094
139095
139096
139097
139098
139099
139100
139101
139102
139103
139104
139105
139106

139107
139108
139109
139110
139111
139112

139113
139114
139115
139116
139117
139118
139119
139120
139121






139122
139123
139124
139125
139126
139127
139128
139129
139130
139131
139132
139133
139134
139135
139136
139137
139138
139139
139140
139141
139142
139143
139144
139145
139146
139147
139148

139149
139150
139151
139152
139153
139154
139155
139156

139157
139158
139159
139160
139161
139162
139163
139164
139165
139166


139167
139168
139169
139170
139171
139172
139173
139174
139175

139176
139177
139178
139179
139180
139181
139182
139183
......
139203
139204
139205
139206
139207
139208
139209
139210
139211
139212
139213
139214
139215
139216
139217
139218
139219
139220
139221
139222
139223
139224
139225
139226
139227
139228
139229
139230
139231
139232
139233
139234
139235
139236
139237
139238
139239
139240
139241
139242
139243
139244
139245
139246
139247
139248
139249
139250
139251
139252
139253
139254
139255
139256
139257
139258
139259
139260
139261
139262
139263
139264
139265
139266
139267
139268
139269

139270
139271
139272
139273
139274
139275
139276
139277
139278
139279
139280
139281
139282
139283
139284
139285
139286
139287
139288
139289
139290
139291
139292
139293
139294
139295
139296
139297
139298
139299
139300
139301
139302
139303
139304
139305
139306
139307
139308
139309
139310
139311
139312
139313
139314
139315
139316
139317
139318
139319
139320
139321
139322
139323
139324
139325
139326
139327
139328
139329
139330
139331
139332
139333
139334
139335
139336
139337
139338
139339
139340
139341
139342
139343
139344
139345
139346
139347
139348
139349
139350
139351
139352
139353
139354
139355
139356
139357
139358
139359
139360
139361
139362
139363
139364
139365
139366
139367
139368
139369
139370
139371
139372
139373
139374
139375
139376
139377
139378
139379
139380
139381
139382
139383
139384
139385
139386
139387
139388
139389
139390
139391
139392
139393
139394
139395
139396
139397
139398
139399
139400
139401
139402
139403
139404
139405
139406
139407
139408
139409
139410
139411
139412
139413
139414
139415
139416
139417
139418
139419
139420
139421
139422
139423
139424
139425
139426
139427
139428
139429
139430
139431
139432
139433
139434
139435
139436
139437
139438
139439
139440
139441
139442
139443
139444
139445
139446
139447
139448
139449
139450
139451
139452
139453
139454
139455
139456
139457
139458
139459
139460
139461
139462
139463
139464
139465
139466
139467
139468
139469
139470
139471
139472
139473
139474
139475
139476
139477
139478
139479
139480
139481
139482
139483
139484
139485
139486
139487
139488
139489
139490
139491
139492
139493
139494
139495
139496
139497
139498
139499
139500
139501
139502
139503
139504
139505
139506
139507
139508
139509
139510
139511
139512
139513
139514
139515
139516
139517
139518
......
139626
139627
139628
139629
139630
139631
139632
139633
139634
139635
139636
139637
139638
139639
139640
139641
139642
139643
139644
139645
139646
139647
139648
139649
139650
139651
139652
139653
139654
139655
139656
139657
139658
139659
139660
139661
139662
139663
139664
139665
139666
139667
139668
139669
139670
139671
139672
139673
139674
139675
139676
139677
139678
139679
139680
139681
139682











139683
139684
139685
139686
139687
139688
139689
139690
139691
139692
139693
139694
139695
139696
139697
139698
139699
139700
139701
139702
139703
139704
139705
......
139762
139763
139764
139765
139766
139767
139768
139769
139770
139771
139772
139773
139774
139775
139776
139777
139778
139779
139780
139781
139782
139783
139784
139785
139786
139787
139788
139789
139790
139791
139792
139793
139794
139795
139796
139797
139798
139799
139800
139801
139802
139803
139804
139805
139806
139807
139808
139809
139810
139811
139812
139813
139814
139815
139816
139817
139818
139819
139820
139821
139822
139823
139824
139825
139826
139827
139828
139829
139830
139831
139832
139833
139834
139835
......
139884
139885
139886
139887
139888
139889
139890

139891
139892
139893
139894
139895
139896
139897
......
139921
139922
139923
139924
139925
139926
139927
139928
139929
139930
139931
139932
139933
139934
139935
139936
139937
139938
139939
139940
139941
139942
139943
139944
139945
139946
139947
139948
139949
......
139977
139978
139979
139980
139981
139982
139983
139984
139985
139986
139987
139988
139989
139990
139991
139992
139993
139994
139995
139996
139997
139998
139999
140000
140001
140002
140003
140004
140005
140006
140007
140008
140009
140010
140011
140012
140013
140014
140015
140016
140017
140018
140019
140020
140021
140022
140023
140024
140025
140026
140027
140028
140029
140030
140031
140032
140033
140034
140035
140036
140037
140038
140039
140040
140041
140042
140043
140044
140045
140046
140047
140048
140049
140050
140051
140052
140053
140054
140055
140056
140057
140058
140059
140060
140061
140062
140063
140064
140065
140066
140067
140068
140069
140070
140071
140072
140073
140074
140075
140076
140077
140078
140079
140080
140081
140082
140083
140084
140085
140086
140087
140088
140089
140090
140091
140092
140093
140094
140095
140096
140097
140098
140099
140100
140101
140102
140103
140104
140105
140106
140107
140108
140109
140110
140111
140112
140113
140114
140115
140116
140117
140118
140119
140120
140121
140122
140123
140124
140125
140126
140127
140128
140129
140130
140131
140132
140133
140134
140135
140136
140137
140138
140139
140140
140141
140142
140143
140144
140145
140146
140147
140148
140149
140150
140151
140152
140153
140154
140155
140156
140157
140158
140159
140160
140161
140162
140163
140164
140165
140166
140167
140168
140169
140170
140171
140172
140173
140174
140175
140176
140177
140178
140179
140180
140181
140182
140183
140184
140185
140186
140187
140188
140189
140190
140191
140192
140193
140194
140195
140196
140197
140198
140199
140200
140201
140202
140203
140204
140205
140206
140207
140208
140209
140210
140211
140212
140213
140214
140215
140216
140217
140218
140219
140220
140221
140222
140223
140224
140225
140226
140227
140228
140229
140230
140231
140232
140233
140234
140235
140236
140237
140238
140239
140240
140241
140242
140243
140244
140245
140246
140247
140248
140249
140250
140251
140252
140253
140254
140255
140256
140257
140258
140259
140260
140261
140262
140263
140264
140265
140266
140267
140268
140269
140270
140271
140272
140273
140274
140275
140276
140277
140278
140279
140280
140281
140282
140283
140284
140285
140286
140287
140288
140289
140290
140291
140292
140293
140294
140295
140296
140297
140298
140299
140300
140301
140302
140303
140304
140305
140306
140307
140308
140309
140310
140311
140312
140313
140314
140315
140316
140317
140318
140319
140320
140321
140322
140323
140324
140325
140326
140327
140328
140329
140330
140331
140332
140333
140334
140335
140336
140337
140338
140339
140340
140341
140342
140343
140344
140345
140346
140347
140348
140349
140350
140351
140352
140353
140354
140355
140356
140357
140358
140359
140360
140361
140362
140363
140364
140365
140366
140367
......
140404
140405
140406
140407
140408
140409
140410
140411
140412
140413
140414
140415
140416
140417
140418
140419
140420
140421
140422
140423
140424
140425
140426
......
140435
140436
140437
140438
140439
140440
140441
140442
140443
140444
140445
140446
140447
140448
140449
140450
140451
140452
140453
140454
140455
140456
140457
140458
140459
140460
140461
140462
140463
140464
140465
140466
140467
140468
140469
140470
140471
140472
140473
140474
140475
140476
140477
140478
140479
140480
140481
140482
140483
140484
140485
140486
140487
140488
140489
140490
140491
140492
140493
140494
140495
140496
140497
140498
140499
......
140501
140502
140503
140504
140505
140506
140507
140508
140509
140510
140511
140512
140513
140514
140515
140516
140517
140518
140519
140520
140521
140522
140523
140524
140525
140526
140527
140528

140529


140530
140531
140532
140533
140534

140535
140536
140537
140538
140539
140540
140541
140542
140543
140544
140545
140546
140547
140548
140549
140550
140551
140552
140553
140554
140555
140556
140557
140558
140559
140560
140561
140562
140563
140564

140565
140566
140567
140568
140569
140570
140571
140572
140573

140574
140575
140576

140577
140578
140579
140580
140581
140582
140583
140584
140585
140586
140587
140588
140589
140590
140591
140592
140593
140594
140595
140596
140597
140598
140599
140600
140601
140602
140603
140604
140605
140606
140607
140608
140609
140610
140611
140612
140613
140614
140615
140616
140617
140618
140619
140620
140621
140622
140623
140624
140625
140626
140627
140628
140629
140630
140631
140632
140633
140634
140635
140636
140637
140638
140639
140640
140641
140642
140643
140644
140645
140646
140647
140648
140649
140650
140651
140652
140653
140654
140655
140656
140657
140658
140659
140660
140661
140662
140663
140664
140665
140666
140667
140668
140669
140670
140671
140672
140673
140674
140675
140676
140677
140678
140679
140680
140681
140682
140683
140684
140685
140686
140687
140688
140689
140690
140691
140692
140693
140694
140695
140696
140697
140698
140699
140700
140701
140702
140703
140704
140705
140706
140707
140708
140709
140710
140711
140712
140713
140714
140715
140716
140717
140718
140719
140720
140721
140722
140723
140724
140725
140726
140727
140728
140729
140730
140731
140732
140733
140734
140735
140736
140737
140738
140739
140740
140741
140742
140743
140744
140745
140746
140747
140748
140749
140750
140751
140752
140753
140754
140755
140756
140757
140758
140759
140760
140761
140762
140763
140764
140765
140766
140767
140768
140769
140770
140771
140772
140773
140774
140775
140776
140777
140778
140779
140780
140781
140782
140783
140784
140785
140786
140787
140788
140789
140790
140791
140792
140793
140794
140795
140796
140797
140798
140799
140800
140801
140802
140803
140804
140805
140806
140807
140808
140809
140810
140811
140812
140813
140814
140815
140816
140817
140818
140819
140820
140821
140822
140823
140824
140825
140826
140827
140828
140829
140830
140831
140832
140833
140834
140835
140836
140837
140838
140839
140840
140841
140842
140843
140844
140845
140846
140847
140848
140849
140850
140851
140852
140853
140854
140855
140856
140857
140858
140859
140860
140861
140862
140863
140864
140865
140866
140867
140868
140869
140870
140871
140872
140873
140874
140875
140876
140877
140878
140879
140880
140881
140882
140883
140884
140885
140886
140887
140888
140889
140890
140891
140892
140893
140894
140895
140896
140897
140898
140899
140900
140901
140902
140903
140904
140905
140906
140907
140908
140909
140910
140911
140912
140913
140914
140915
140916
140917
140918
140919
140920
140921
140922
140923
140924
140925
140926
140927
140928
140929
140930



140931

140932
140933
140934

140935
140936
140937

140938
140939
140940
140941
140942
140943
140944
140945
140946
140947
140948
140949
140950
140951

140952
140953
140954
140955
140956
140957
140958
140959
140960
140961
140962
140963
140964
140965
140966
140967
140968
140969
140970
140971
140972
140973
140974
140975
140976
140977
140978
140979
140980

140981
140982
140983
140984
140985
140986
140987
140988
140989
140990
140991
140992
140993
140994
140995
140996
140997
140998
140999

141000
141001
141002
141003
141004
141005
141006
141007
141008
141009

141010
141011
141012
141013
141014
141015
141016
141017
141018
141019

141020
141021
141022
141023
141024
141025
141026
141027
141028
141029
141030


141031
141032
141033
141034
141035
141036
141037
141038
141039
141040
141041
141042
141043
141044
141045

141046
141047
141048
141049
141050
141051
141052
141053
141054
141055
141056
141057
141058

141059
141060
141061
141062

141063
141064
141065
141066
141067
141068
141069
141070
141071
141072

141073
141074
141075
141076
141077
141078
141079
141080
141081

141082
141083
141084
141085
141086
141087

141088
141089
141090
141091
141092
141093
141094

141095
141096

141097
141098
141099
141100

141101
141102
141103
141104
141105
141106
141107
141108
141109

141110
141111
141112
141113
141114
141115
141116
141117
141118
141119
141120
141121
141122
141123
141124

141125
141126
141127
141128
141129
141130
141131
141132
141133
141134
141135
141136
141137


141138
141139
141140

141141
141142
141143

141144
141145
141146
141147

141148
141149
141150
141151
141152
141153

141154
141155
141156
141157
141158
141159

141160
141161
141162

141163
141164
141165

141166
141167
141168
141169
141170
141171
141172
141173
141174
141175
141176
141177
141178
141179
141180
141181


141182
141183
141184
141185
141186
141187
141188
141189
141190
141191
141192
141193
141194
141195
141196
141197
141198
141199
141200
141201
141202
141203
141204
141205
......
141208
141209
141210
141211
141212
141213
141214
141215
141216
141217
141218
141219
141220
141221
141222
141223
141224
141225
141226
141227
141228
141229
141230
141231
141232
141233
141234

141235
141236
141237
141238

141239
141240
141241
141242
141243
141244
141245
141246


141247
141248
141249
141250
141251
141252
141253
141254
141255
141256


141257
141258
141259
141260
141261
141262

141263
141264
141265
141266
141267
141268

141269
141270

141271
141272
141273
141274
141275
141276
141277
141278
141279
141280
141281
141282
141283
141284
141285
141286
141287
141288
141289
141290
141291

141292
141293
141294
141295
141296
141297
141298
141299
141300
141301
141302
141303
141304
141305
141306
141307
141308
141309
141310
141311
141312
141313
141314
141315
141316
141317
141318
141319
141320
141321
141322
141323
141324
141325
141326
141327
141328
141329
141330
141331
141332
141333
141334
141335
141336
141337
141338
141339
141340
141341
141342
141343
141344
141345
141346
141347
141348
141349
141350
141351
141352
141353
141354
141355
141356
141357
141358
141359
141360
141361
141362
141363
141364
141365
141366
141367
141368
141369
141370
141371
141372
141373
141374
141375
141376
141377
141378
141379
141380
141381
141382
141383
141384
141385
141386
141387
141388
141389
141390
141391
141392
141393
141394
141395
141396
141397
141398
141399
141400
141401
141402
141403
141404
141405
141406
141407
141408
141409
141410
141411
141412
141413
141414
141415
141416
141417
141418
141419
141420
141421
141422
141423
141424
141425
141426
141427
141428
141429

141430
141431
141432
141433
141434
141435
141436
141437

141438
141439
141440
141441
141442

141443
141444
141445
141446
141447
141448
141449
141450

141451
141452
141453
141454
141455
141456
141457
141458
141459
141460
141461
141462
141463
141464
141465
141466
141467
141468
141469
141470
141471
141472
141473
141474
141475
141476
141477
141478
141479
141480
141481
141482
141483
141484
141485
141486
141487
141488
141489
141490
141491
141492
141493
141494
141495
141496
141497
141498
141499
141500
141501
141502
141503
141504
141505
141506
141507
141508
141509
141510
141511
141512
141513
141514
141515
141516
141517
141518
141519
141520
141521
141522
141523
141524
141525
141526
141527
141528
141529
141530
141531
141532
141533
141534
141535
141536
141537
141538
141539
141540
141541
141542
141543
141544
141545
141546
141547
141548
141549
141550
141551
141552
141553
141554
141555
141556
141557
141558
141559
141560
141561
141562
141563
141564
141565
141566
141567
141568
141569
141570
141571
141572
141573
141574
141575
141576
141577
141578
141579
141580
141581
141582
141583
141584
141585
141586
141587
141588
141589
141590
141591
141592
141593
141594
141595
141596
141597
141598
141599
141600
141601
141602
141603
141604
141605
141606
141607
141608
141609
......
141611
141612
141613
141614
141615
141616
141617




141618
141619
141620
141621
141622

141623
141624
141625
141626
141627
141628
141629
......
141653
141654
141655
141656
141657
141658
141659
141660
141661
141662
141663
141664
141665
141666
141667
141668
141669
141670
141671
......
141729
141730
141731
141732
141733
141734
141735
141736
141737
141738
141739
141740
141741
141742
141743
141744
141745
141746
141747
141748
141749
141750
141751
141752
141753
141754
141755
141756
141757
141758
141759
141760
141761
141762
141763
141764
141765
141766
141767
......
142702
142703
142704
142705
142706
142707
142708
142709
142710
142711
142712
142713
142714
142715
142716
......
143170
143171
143172
143173
143174
143175
143176
143177
143178
143179
143180
143181
143182
143183
143184
......
143996
143997
143998
143999
144000
144001
144002
144003
144004
144005
144006
144007
144008
144009
144010
......
144494
144495
144496
144497
144498
144499
144500
144501
144502
144503
144504
144505
144506
144507
144508
144509
144510
144511
......
146003
146004
146005
146006
146007
146008
146009
146010
146011
146012
146013
146014
146015
146016
146017
......
146036
146037
146038
146039
146040
146041
146042
146043
146044
146045
146046
146047
146048
146049
146050
146051
146052
146053
146054
146055
146056
146057
146058
146059
146060
146061
146062
146063
......
146231
146232
146233
146234
146235
146236
146237
146238
146239
146240
146241
146242
146243
146244
146245
......
146533
146534
146535
146536
146537
146538
146539
146540
146541
146542
146543
146544
146545
146546
146547
146548
146549
146550
146551
146552
146553
146554
146555
146556
146557
146558
146559
146560
146561
146562
146563
146564
146565
146566
146567
146568
146569
146570
146571
146572
146573
146574
146575
146576
146577
......
147091
147092
147093
147094
147095
147096
147097
147098
147099
147100
147101
147102
147103
147104
147105
147106
147107
147108
147109
147110
147111
147112
147113
147114
147115
147116
147117
147118
147119
147120
......
167068
167069
167070
167071
167072
167073
167074
167075
167076
167077
167078
167079
167080
167081
167082
......
168880
168881
168882
168883
168884
168885
168886
168887
168888
168889
168890
168891
168892
168893
168894
......
169755
169756
169757
169758
169759
169760
169761
169762
169763
169764
169765
169766
169767
169768
169769
......
170466
170467
170468
170469
170470
170471
170472
170473
170474
170475
170476
170477
170478
170479
170480
170481
170482
170483
170484
170485
170486
170487
170488
170489
170490
170491
170492
170493
170494
170495
170496
170497
170498
170499
170500
170501
170502
170503
170504
170505
170506
170507
170508
170509
170510
170511
170512
170513
170514
170515
170516
170517
170518
170519
170520
170521
170522
170523
170524
170525
170526
170527
170528
170529
170530
170531
170532
170533
170534
170535
170536
170537
170538
170539
170540
170541
170542
170543
170544
170545
170546
170547
170548
170549
170550
170551
170552
170553
170554
170555
170556
170557
170558
170559
170560
170561
170562
170563
170564
170565
170566
170567
170568
170569
170570
170571
170572
170573
170574
170575
170576
170577
170578
170579
170580
170581
170582
170583
170584
170585
170586
170587
170588
170589
170590
170591
170592
170593
170594
170595
170596
170597
170598
170599
170600
170601
170602
170603
170604
170605
170606
170607
170608
170609
170610
170611
170612
170613
170614
170615
170616
170617
170618
170619
170620
170621
170622
170623
170624
170625
170626
170627
170628
170629
170630
170631
170632
170633
170634
170635
170636
170637
170638
170639
170640
170641
170642
170643
170644
170645
170646
170647
170648
170649
170650
170651
170652
170653
170654
170655
170656
170657
170658
170659
170660
170661
170662
170663
170664
170665
170666
170667
170668
170669
170670
170671
170672
170673
170674
170675
170676
170677
170678
170679
170680
170681
170682
170683
170684
170685
170686
170687
170688
170689
170690
170691
170692
170693
170694
170695
170696
170697
170698
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170925
170926
170927
170928
170929
170930
170931
170932
170933
170934
170935
170936
......
170937
170938
170939
170940
170941
170942
170943
170944
170945
170946
170947
170948
170949
170950
170951
170952
170953
......
171126
171127
171128
171129
171130
171131
171132
171133
171134
171135
171136
171137
171138
171139
171140
171141
171142
......
171145
171146
171147
171148
171149
171150
171151
171152
171153
171154
171155
171156
171157
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171167
171168
171169
171170
171171
171172
171173
171174
171175
171176
171177
171178
......
171344
171345
171346
171347
171348
171349
171350


















171351
171352
171353
171354
171355
171356
171357
......
171509
171510
171511
171512
171513
171514
171515
171516
171517
171518
171519
171520
171521
171522
171523
171524
......
171605
171606
171607
171608
171609
171610
171611
171612
171613
171614
171615
171616
171617
171618
171619
171620
171621
171622
171623
171624
171625
171626
171627

171628
171629
171630
171631
171632
171633
171634
......
178151
178152
178153
178154
178155
178156
178157
178158
178159
178160
178161
178162
178163
178164
178165
178166




178167
178168
178169
178170
178171
178172
178173
178174
178175
178176
178177
178178
178179
178180
178181
178182
178183
178184
178185
178186
178187

178188











178189
178190
178191
178192
178193
178194
178195
178196
178197

178198
178199


178200
178201
178202
178203
178204
178205
178206
......
178210
178211
178212
178213
178214
178215
178216
178217
178218
178219
178220
178221
178222
178223
178224
178225
178226
178227
178228
178229
178230
178231
178232
178233
178234
178235
178236
178237
178238
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178240
178241
178242
178243
178244
178245
178246
178247
178248
178249
178250
178251
178252
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178254
178255
178256
178257

178258
178259
178260
178261
178262
178263
178264
178265
178266
178267
178268
178269
178270
178271
178272
......
178292
178293
178294
178295
178296
178297
178298
178299
178300
178301
178302
178303
178304
178305
178306
......
178312
178313
178314
178315
178316
178317
178318
178319
178320
178321
178322
178323
178324
178325
178326
178327
178328
178329
178330
178331
178332
178333
178334
178335
178336
178337
178338
178339
178340
178341
178342
178343
178344
178345
178346
178347
178348
178349
178350
178351
178352
178353
178354
178355
178356
178357
178358
178359
178360
178361
178362
178363
178364
178365
178366
178367
178368

178369
178370
178371
178372
178373
178374
178375
178376
178377
178378
178379
178380

178381
178382
178383
178384
178385
178386
178387
178388
178389
178390
178391
178392
178393
178394
178395
178396
178397
178398
178399
178400
178401
178402
178403
178404
178405
178406
......
178412
178413
178414
178415
178416
178417
178418
178419
178420
178421
178422
178423
178424
178425
178426
178427
178428
178429
178430
178431
178432
178433




178434
178435
178436
178437
178438
178439
178440
178441
178442
178443
178444
178445
178446
178447
178448
178449
178450
178451
178452
178453
178454
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178457
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178459
178460
178461
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178463
178464
178465
178466
178467
178468
178469
178470
178471
178472
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178475
178476
178477
178478
178479
178480
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178483
178484
178485
178486
178487
178488
178489
178490
178491
178492
178493
178494
178495
178496
......
178503
178504
178505
178506
178507
178508
178509
178510
178511
178512
178513
178514
178515
178516
178517
......
186924
186925
186926
186927
186928
186929
186930
186931
186932
186933
186934
186935
186936
186937
186938
186939
......
187006
187007
187008
187009
187010
187011
187012
187013
187014
187015
187016
187017
187018
187019
187020
187021
187022
187023
......
187110
187111
187112
187113
187114
187115
187116
187117
187118
187119
187120


187121
187122
187123
187124
187125
187126
187127
187128
187129
187130
187131
187132
187133
187134
187135
187136
187137
187138
187139

187140
187141
187142
187143
187144
187145
187146
187147
187148
187149
187150
187151
187152
187153
187154
187155
187156


187157
187158
187159
187160
187161
187162
187163
187164
187165
187166
187167
187168
......
187184
187185
187186
187187
187188
187189
187190



187191
187192
187193
187194
187195
187196
187197
187198
187199
187200
187201
187202
187203
187204
187205
187206
187207

187208




187209
187210
187211
187212
187213

187214
187215
187216
187217
187218
187219
187220
187221
187222
187223
187224
187225
187226
187227
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187229
187230
187231
187232
187233
187234
187235
187236
187237
187238
187239
187240
187241

187242
187243
187244
187245
187246
187247
187248
187249


187250
187251
187252
187253
187254
187255

187256
187257
187258
187259



187260
187261
187262
187263
187264

187265
187266
187267
187268


187269
187270
187271
187272


187273
187274
187275
187276
187277
187278
187279
187280
187281
187282
187283
......
187371
187372
187373
187374
187375
187376
187377
187378
187379
187380
187381
187382
187383
187384
187385
187386
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187393
187394
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187396
187397
187398
187399
187400
187401
187402
187403
187404
187405
187406
187407
187408
187409
187410

187411
187412
187413
187414
187415
187416
187417
187418
......
187428
187429
187430
187431
187432
187433
187434
187435
187436
187437
187438
187439
187440
187441
187442
187443
187444
187445
187446
187447
187448
187449
187450
187451
......
187558
187559
187560
187561
187562
187563
187564
187565
187566
187567
187568
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187570
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187590
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187592
187593
187594
187595
187596
187597
187598
......
187655
187656
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187659
187660
187661
187662
187663
187664
187665
187666
187667
187668
187669
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187675
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187680
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187688
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187698
187699
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187705
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187710
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187717
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187719
187720
187721
187722
187723
187724
187725
187726
187727
187728
......
187777
187778
187779
187780
187781
187782
187783

187784
187785
187786
187787
187788
187789
187790
......
187814
187815
187816
187817
187818
187819
187820
187821
187822
187823
187824
187825
187826
187827
187828
187829
187830
187831
187832
187833
187834
187835
187836
187837
187838
187839
187840
187841
187842
......
187870
187871
187872
187873
187874
187875
187876
187877
187878
187879
187880
187881
187882
187883
187884
187885
187886
187887
187888
187889
187890
187891
187892
187893
187894
187895
187896
187897
187898
187899
187900
187901
187902
187903
187904
187905
187906
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187909
187910
187911
187912
187913
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187915
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187918
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187920
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187922
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187926
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187928
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187933
187934
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187944
187945
187946
187947
187948
187949
187950
187951
187952
187953
187954
187955
187956
187957
187958
......
187986
187987
187988
187989
187990
187991
187992
187993
187994
187995
187996
187997
187998
187999
188000
188001
188002
188003
188004
188005
188006
188007
188008
188009
188010
188011
188012
188013
188014
188015
188016
188017
188018
188019
188020
188021
188022
188023
188024
188025
188026
188027
188028
188029
188030
188031
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188033
188034
188035
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188053
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188055
188056
188057
188058
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188060
188061
188062
188063
188064
188065
188066
188067
188068
188069
188070
188071
188072
188073
188074
188075
188076
188077
188078
188079
188080
188081
188082
188083
188084
188085
188086
188087
188088
188089
188090
188091
188092
188093
188094
188095
188096
188097
188098
188099
188100
188101
188102
188103
188104
188105
188106
188107
188108
188109
188110
188111
188112
188113
188114
188115
188116
188117
188118
188119
188120
188121
188122
188123
188124
188125
188126
188127
188128
188129
188130
188131
188132
188133
188134
188135
188136
......
188141
188142
188143
188144
188145
188146
188147




188148
188149
188150
188151
188152

188153
188154
188155
188156
188157
188158
188159
......
188257
188258
188259
188260
188261
188262
188263
188264
188265
188266
188267
188268
188269
188270
188271
188272
188273
188274
188275
188276
188277
188278
188279
188280
188281
188282
188283
188284
188285
188286
188287
188288
188289
188290
188291
188292
188293
188294
188295
......
188759
188760
188761
188762
188763
188764
188765
188766
188767
188768
188769
188770
188771
188772
188773
188774
188775
188776
188777
188778
188779
188780
188781
188782
......
188805
188806
188807
188808
188809
188810
188811
188812
188813
188814
188815
188816
188817
188818
188819
188820
188821
......
190561
190562
190563
190564
190565
190566
190567
190568
190569
190570
190571
190572
190573
190574
190575
190576
......
190643
190644
190645
190646
190647
190648
190649
190650
190651
190652
190653
190654
190655
190656
190657
......
190903
190904
190905
190906
190907
190908
190909
190910
190911
190912
190913
190914
190915
190916
190917
......
190958
190959
190960
190961
190962
190963
190964
190965
190966
190967
190968
190969
190970
190971
190972
190973
190974
190975
......
191215
191216
191217
191218
191219
191220
191221
191222
191223
191224
191225
191226
191227
191228
191229
191230
191231
......
191398
191399
191400
191401
191402
191403
191404
191405
191406
191407
191408
191409
191410
191411
191412
......
191922
191923
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191927
191928
191929
191930
191931
191932
191933
191934
191935
191936
191937
191938
191939
191940
191941
191942
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191944
191945
......
192211
192212
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192214
192215
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192218
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192220
192221
192222
192223
192224
192225
......
192230
192231
192232
192233
192234
192235
192236
192237
192238
192239
192240
192241
192242
192243
192244
192245
192246
192247
......
192507
192508
192509
192510
192511
192512
192513
192514
192515
192516
192517
192518
192519
192520
192521
......
192594
192595
192596
192597
192598
192599
192600
192601
192602
192603
192604
192605
192606
192607
192608
192609
192610
192611
192612
192613
192614
192615
192616
192617
192618
192619
192620
192621
192622
192623
192624
......
198764
198765
198766
198767
198768
198769
198770
198771
198772
198773
198774
198775
198776
198777
198778
198779
198780
198781
198782
198783
198784
......
198864
198865
198866
198867
198868
198869
198870
198871
198872
198873
198874
198875
198876
198877
198878
......
202986
202987
202988
202989
202990
202991
202992
202993
202994
202995
202996
202997
202998
202999
203000
......
207254
207255
207256
207257
207258
207259
207260
207261
207262
207263
207264
207265
207266
207267
/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
** version 3.22.0.  By combining all the individual C code files into this
** single large file, the entire code can be compiled as a single translation
** unit.  This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately.  Performance improvements
** of 5% or more are commonly seen when SQLite is compiled as a single
** translation unit.
**
** This file is all you need to compile SQLite.  To use SQLite in other
................................................................................
** been edited in any way since it was last checked in, then the last
** four hexadecimal digits of the hash may be modified.
**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.22.0"
#define SQLITE_VERSION_NUMBER 3022000
#define SQLITE_SOURCE_ID      "2018-01-11 18:15:40 a5d09dfaa337fa51d6e702c6aefe58824ab1e7d221c6e79166e2c6f9c7ab1501"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
................................................................................
** support for additional result codes that provide more detailed information
** about errors. These [extended result codes] are enabled or disabled
** on a per database connection basis using the
** [sqlite3_extended_result_codes()] API.  Or, the extended code for
** the most recent error can be obtained using
** [sqlite3_extended_errcode()].
*/
#define SQLITE_ERROR_MISSING_COLLSEQ   (SQLITE_ERROR | (1<<8))
#define SQLITE_ERROR_RETRY             (SQLITE_ERROR | (2<<8))
#define SQLITE_IOERR_READ              (SQLITE_IOERR | (1<<8))
#define SQLITE_IOERR_SHORT_READ        (SQLITE_IOERR | (2<<8))
#define SQLITE_IOERR_WRITE             (SQLITE_IOERR | (3<<8))
#define SQLITE_IOERR_FSYNC             (SQLITE_IOERR | (4<<8))
#define SQLITE_IOERR_DIR_FSYNC         (SQLITE_IOERR | (5<<8))
#define SQLITE_IOERR_TRUNCATE          (SQLITE_IOERR | (6<<8))
#define SQLITE_IOERR_FSTAT             (SQLITE_IOERR | (7<<8))
................................................................................
#define SQLITE_LOCKED_SHAREDCACHE      (SQLITE_LOCKED |  (1<<8))
#define SQLITE_BUSY_RECOVERY           (SQLITE_BUSY   |  (1<<8))
#define SQLITE_BUSY_SNAPSHOT           (SQLITE_BUSY   |  (2<<8))
#define SQLITE_CANTOPEN_NOTEMPDIR      (SQLITE_CANTOPEN | (1<<8))
#define SQLITE_CANTOPEN_ISDIR          (SQLITE_CANTOPEN | (2<<8))
#define SQLITE_CANTOPEN_FULLPATH       (SQLITE_CANTOPEN | (3<<8))
#define SQLITE_CANTOPEN_CONVPATH       (SQLITE_CANTOPEN | (4<<8))
#define SQLITE_CANTOPEN_DIRTYWAL       (SQLITE_CANTOPEN | (5<<8))
#define SQLITE_CORRUPT_VTAB            (SQLITE_CORRUPT | (1<<8))
#define SQLITE_READONLY_RECOVERY       (SQLITE_READONLY | (1<<8))
#define SQLITE_READONLY_CANTLOCK       (SQLITE_READONLY | (2<<8))
#define SQLITE_READONLY_ROLLBACK       (SQLITE_READONLY | (3<<8))
#define SQLITE_READONLY_DBMOVED        (SQLITE_READONLY | (4<<8))
#define SQLITE_READONLY_CANTINIT       (SQLITE_READONLY | (5<<8))
#define SQLITE_READONLY_DIRECTORY      (SQLITE_READONLY | (6<<8))
#define SQLITE_ABORT_ROLLBACK          (SQLITE_ABORT | (2<<8))
#define SQLITE_CONSTRAINT_CHECK        (SQLITE_CONSTRAINT | (1<<8))
#define SQLITE_CONSTRAINT_COMMITHOOK   (SQLITE_CONSTRAINT | (2<<8))
#define SQLITE_CONSTRAINT_FOREIGNKEY   (SQLITE_CONSTRAINT | (3<<8))
#define SQLITE_CONSTRAINT_FUNCTION     (SQLITE_CONSTRAINT | (4<<8))
#define SQLITE_CONSTRAINT_NOTNULL      (SQLITE_CONSTRAINT | (5<<8))
#define SQLITE_CONSTRAINT_PRIMARYKEY   (SQLITE_CONSTRAINT | (6<<8))
................................................................................
** CAPI3REF: OS Interface Object
**
** An instance of the sqlite3_vfs object defines the interface between
** the SQLite core and the underlying operating system.  The "vfs"
** in the name of the object stands for "virtual file system".  See
** the [VFS | VFS documentation] for further information.
**
** The VFS interface is sometimes extended by adding new methods onto
** the end.  Each time such an extension occurs, the iVersion field
** is incremented.  The iVersion value started out as 1 in
** SQLite [version 3.5.0] on [dateof:3.5.0], then increased to 2
** with SQLite [version 3.7.0] on [dateof:3.7.0], and then increased
** to 3 with SQLite [version 3.7.6] on [dateof:3.7.6].  Additional fields
** may be appended to the sqlite3_vfs object and the iVersion value
** may increase again in future versions of SQLite.
** Note that the structure
** of the sqlite3_vfs object changes in the transition from
** SQLite [version 3.5.9] to [version 3.6.0] on [dateof:3.6.0]
** and yet the iVersion field was not modified.

**
** The szOsFile field is the size of the subclassed [sqlite3_file]
** structure used by this VFS.  mxPathname is the maximum length of
** a pathname in this VFS.
**
** Registered sqlite3_vfs objects are kept on a linked list formed by
** the pNext pointer.  The [sqlite3_vfs_register()]
................................................................................
** operation before closing the connection. This option may be used to
** override this behaviour. The first parameter passed to this operation
** is an integer - non-zero to disable checkpoints-on-close, or zero (the
** default) to enable them. The second parameter is a pointer to an integer
** into which is written 0 or 1 to indicate whether checkpoints-on-close
** have been disabled - 0 if they are not disabled, 1 if they are.
** </dd>

** <dt>SQLITE_DBCONFIG_ENABLE_QPSG</dt>
** <dd>^(The SQLITE_DBCONFIG_ENABLE_QPSG option activates or deactivates
** the [query planner stability guarantee] (QPSG).  When the QPSG is active,
** a single SQL query statement will always use the same algorithm regardless
** of values of [bound parameters].)^ The QPSG disables some query optimizations
** that look at the values of bound parameters, which can make some queries
** slower.  But the QPSG has the advantage of more predictable behavior.  With
** the QPSG active, SQLite will always use the same query plan in the field as
** was used during testing in the lab.
** </dd>
** <dt>SQLITE_DBCONFIG_TRIGGER_EQP</dt>
** <dd> By default, the output of EXPLAIN QUERY PLAN commands does not 
** include output for any operations performed by trigger programs. This
** option is used to set or clear (the default) a flag that governs this
** behavior. The first parameter passed to this operation is an integer -
** non-zero to enable output for trigger programs, or zero to disable it.
** The second parameter is a pointer to an integer into which is written 
** 0 or 1 to indicate whether output-for-triggers has been disabled - 0 if 
** it is not disabled, 1 if it is.  
** </dd>
** </dl>
*/
#define SQLITE_DBCONFIG_MAINDBNAME            1000 /* const char* */
#define SQLITE_DBCONFIG_LOOKASIDE             1001 /* void* int int */
#define SQLITE_DBCONFIG_ENABLE_FKEY           1002 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_TRIGGER        1003 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER 1004 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION 1005 /* int int* */
#define SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE      1006 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_QPSG           1007 /* int int* */
#define SQLITE_DBCONFIG_TRIGGER_EQP           1008 /* int int* */
#define SQLITE_DBCONFIG_MAX                   1008 /* Largest DBCONFIG */

/*
** CAPI3REF: Enable Or Disable Extended Result Codes
** METHOD: sqlite3
**
** ^The sqlite3_extended_result_codes() routine enables or disables the
** [extended result codes] feature of SQLite. ^The extended result
................................................................................
** ^A NULL pointer can be used in place of "main" to refer to the
** main database file.
** ^The third and fourth parameters to this routine
** are passed directly through to the second and third parameters of
** the xFileControl method.  ^The return value of the xFileControl
** method becomes the return value of this routine.
**
** ^The [SQLITE_FCNTL_FILE_POINTER] value for the op parameter causes
** a pointer to the underlying [sqlite3_file] object to be written into
** the space pointed to by the 4th parameter.  ^The [SQLITE_FCNTL_FILE_POINTER]
** case is a short-circuit path which does not actually invoke the
** underlying sqlite3_io_methods.xFileControl method.
**
** ^If the second parameter (zDbName) does not match the name of any
** open database file, then SQLITE_ERROR is returned.  ^This error
** code is not remembered and will not be recalled by [sqlite3_errcode()]
** or [sqlite3_errmsg()].  The underlying xFileControl method might
** also return SQLITE_ERROR.  There is no way to distinguish between
** an incorrect zDbName and an SQLITE_ERROR return from the underlying
** xFileControl method.
**
** See also: [file control opcodes]
*/
SQLITE_API int sqlite3_file_control(sqlite3*, const char *zDbName, int op, void*);

/*
** CAPI3REF: Testing Interface
**
** ^The sqlite3_test_control() interface is used to read out internal
................................................................................
#define SQLITE_TESTCTRL_ONCE_RESET_THRESHOLD    19
#define SQLITE_TESTCTRL_NEVER_CORRUPT           20
#define SQLITE_TESTCTRL_VDBE_COVERAGE           21
#define SQLITE_TESTCTRL_BYTEORDER               22
#define SQLITE_TESTCTRL_ISINIT                  23
#define SQLITE_TESTCTRL_SORTER_MMAP             24
#define SQLITE_TESTCTRL_IMPOSTER                25
#define SQLITE_TESTCTRL_PARSER_COVERAGE         26
#define SQLITE_TESTCTRL_LAST                    26  /* Largest TESTCTRL */

/*
** CAPI3REF: SQLite Runtime Status
**
** ^These interfaces are used to retrieve runtime status information
** about the performance of SQLite, and optionally to reset various
** highwater marks.  ^The first argument is an integer code for
................................................................................
** value returned is one of [SQLITE_ROLLBACK], [SQLITE_IGNORE], [SQLITE_FAIL],
** [SQLITE_ABORT], or [SQLITE_REPLACE], according to the [ON CONFLICT] mode
** of the SQL statement that triggered the call to the [xUpdate] method of the
** [virtual table].
*/
SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *);

/*
** CAPI3REF: Determine If Virtual Table Column Access Is For UPDATE
**
** If the sqlite3_vtab_nochange(X) routine is called within the [xColumn]
** method of a [virtual table], then it returns true if and only if the
** column is being fetched as part of an UPDATE operation during which the
** column value will not change.  Applications might use this to substitute
** a lighter-weight value to return that the corresponding [xUpdate] method
** understands as a "no-change" value.
*/
SQLITE_API int sqlite3_vtab_nochange(sqlite3_context*);

/*
** CAPI3REF: Determine The Collation For a Virtual Table Constraint
**
** This function may only be called from within a call to the [xBestIndex]
** method of a [virtual table]. 
**
** The first argument must be the sqlite3_index_info object that is the
** first parameter to the xBestIndex() method. The second argument must be
** an index into the aConstraint[] array belonging to the sqlite3_index_info
** structure passed to xBestIndex. This function returns a pointer to a buffer 
** containing the name of the collation sequence for the corresponding
** constraint.
*/
SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_info*,int);

/*
** CAPI3REF: Conflict resolution modes
** KEYWORDS: {conflict resolution mode}
**
** These constants are returned by [sqlite3_vtab_on_conflict()] to
** inform a [virtual table] implementation what the [ON CONFLICT] mode
** is for the SQL statement being evaluated.
................................................................................
typedef struct Bitvec Bitvec;
typedef struct CollSeq CollSeq;
typedef struct Column Column;
typedef struct Db Db;
typedef struct Schema Schema;
typedef struct Expr Expr;
typedef struct ExprList ExprList;

typedef struct FKey FKey;
typedef struct FuncDestructor FuncDestructor;
typedef struct FuncDef FuncDef;
typedef struct FuncDefHash FuncDefHash;
typedef struct IdList IdList;
typedef struct Index Index;
typedef struct IndexSample IndexSample;
................................................................................
                       int flags, int seekResult);
SQLITE_PRIVATE int sqlite3BtreeFirst(BtCursor*, int *pRes);
SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor*, int *pRes);
SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor*, int flags);
SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor*);
SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor*, int flags);
SQLITE_PRIVATE i64 sqlite3BtreeIntegerKey(BtCursor*);
#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
SQLITE_PRIVATE i64 sqlite3BtreeOffset(BtCursor*);
#endif
SQLITE_PRIVATE int sqlite3BtreePayload(BtCursor*, u32 offset, u32 amt, void*);
SQLITE_PRIVATE const void *sqlite3BtreePayloadFetch(BtCursor*, u32 *pAmt);
SQLITE_PRIVATE u32 sqlite3BtreePayloadSize(BtCursor*);

SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(Btree*, int *aRoot, int nRoot, int, int*);
SQLITE_PRIVATE struct Pager *sqlite3BtreePager(Btree*);
SQLITE_PRIVATE i64 sqlite3BtreeRowCountEst(BtCursor*);
................................................................................
#define OP_Subtract       89 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */
#define OP_Multiply       90 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */
#define OP_Divide         91 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */
#define OP_Remainder      92 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */
#define OP_Concat         93 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */
#define OP_Compare        94 /* synopsis: r[P1@P3] <-> r[P2@P3]            */
#define OP_BitNot         95 /* same as TK_BITNOT, synopsis: r[P1]= ~r[P1] */
#define OP_Offset         96 /* synopsis: r[P3] = sqlite_offset(P1)        */
#define OP_String8        97 /* same as TK_STRING, synopsis: r[P2]='P4'    */
#define OP_Column         98 /* synopsis: r[P3]=PX                         */
#define OP_Affinity       99 /* synopsis: affinity(r[P1@P2])               */
#define OP_MakeRecord    100 /* synopsis: r[P3]=mkrec(r[P1@P2])            */
#define OP_Count         101 /* synopsis: r[P2]=count()                    */
#define OP_ReadCookie    102
#define OP_SetCookie     103
#define OP_ReopenIdx     104 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenRead      105 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenWrite     106 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenDup       107
#define OP_OpenAutoindex 108 /* synopsis: nColumn=P2                       */
#define OP_OpenEphemeral 109 /* synopsis: nColumn=P2                       */
#define OP_SorterOpen    110
#define OP_SequenceTest  111 /* synopsis: if( cursor[P1].ctr++ ) pc = P2   */
#define OP_OpenPseudo    112 /* synopsis: P3 columns in r[P2]              */
#define OP_Close         113
#define OP_ColumnsUsed   114
#define OP_Sequence      115 /* synopsis: r[P2]=cursor[P1].ctr++           */
#define OP_NewRowid      116 /* synopsis: r[P2]=rowid                      */
#define OP_Insert        117 /* synopsis: intkey=r[P3] data=r[P2]          */
#define OP_InsertInt     118 /* synopsis: intkey=P3 data=r[P2]             */
#define OP_Delete        119
#define OP_ResetCount    120
#define OP_SorterCompare 121 /* synopsis: if key(P1)!=trim(r[P3],P4) goto P2 */
#define OP_SorterData    122 /* synopsis: r[P2]=data                       */
#define OP_RowData       123 /* synopsis: r[P2]=data                       */
#define OP_Rowid         124 /* synopsis: r[P2]=rowid                      */
#define OP_NullRow       125
#define OP_SeekEnd       126
#define OP_SorterInsert  127 /* synopsis: key=r[P2]                        */
#define OP_IdxInsert     128 /* synopsis: key=r[P2]                        */
#define OP_IdxDelete     129 /* synopsis: key=r[P2@P3]                     */
#define OP_DeferredSeek  130 /* synopsis: Move P3 to P1.rowid if needed    */
#define OP_IdxRowid      131 /* synopsis: r[P2]=rowid                      */

#define OP_Real          132 /* same as TK_FLOAT, synopsis: r[P2]=P4       */
#define OP_Destroy       133
#define OP_Clear         134
#define OP_ResetSorter   135
#define OP_CreateBtree   136 /* synopsis: r[P2]=root iDb=P1 flags=P3       */
#define OP_SqlExec       137
#define OP_ParseSchema   138
#define OP_LoadAnalysis  139
#define OP_DropTable     140
#define OP_DropIndex     141
#define OP_DropTrigger   142
#define OP_IntegrityCk   143
#define OP_RowSetAdd     144 /* synopsis: rowset(P1)=r[P2]                 */
#define OP_Param         145
#define OP_FkCounter     146 /* synopsis: fkctr[P1]+=P2                    */
#define OP_MemMax        147 /* synopsis: r[P1]=max(r[P1],r[P2])           */
#define OP_OffsetLimit   148 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */
#define OP_AggStep0      149 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggStep       150 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggFinal      151 /* synopsis: accum=r[P1] N=P2                 */
#define OP_Expire        152
#define OP_TableLock     153 /* synopsis: iDb=P1 root=P2 write=P3          */
#define OP_VBegin        154
#define OP_VCreate       155
#define OP_VDestroy      156
#define OP_VOpen         157
#define OP_VColumn       158 /* synopsis: r[P3]=vcolumn(P2)                */
#define OP_VRename       159
#define OP_Pagecount     160
#define OP_MaxPgcnt      161
#define OP_PureFunc0     162
#define OP_Function0     163 /* synopsis: r[P3]=func(r[P2@P5])             */
#define OP_PureFunc      164
#define OP_Function      165 /* synopsis: r[P3]=func(r[P2@P5])             */
#define OP_Trace         166
#define OP_CursorHint    167
#define OP_Noop          168
#define OP_Explain       169

/* Properties such as "out2" or "jump" that are specified in
** comments following the "case" for each opcode in the vdbe.c
** are encoded into bitvectors as follows:
*/
#define OPFLG_JUMP        0x01  /* jump:  P2 holds jmp target */
#define OPFLG_IN1         0x02  /* in1:   P1 is an input */
................................................................................
/*  40 */ 0x01, 0x01, 0x23, 0x26, 0x26, 0x0b, 0x01, 0x01,\
/*  48 */ 0x03, 0x03, 0x03, 0x03, 0x0b, 0x0b, 0x0b, 0x0b,\
/*  56 */ 0x0b, 0x0b, 0x01, 0x03, 0x01, 0x01, 0x01, 0x02,\
/*  64 */ 0x02, 0x08, 0x00, 0x10, 0x10, 0x10, 0x10, 0x00,\
/*  72 */ 0x10, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00,\
/*  80 */ 0x02, 0x02, 0x02, 0x00, 0x26, 0x26, 0x26, 0x26,\
/*  88 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x00, 0x12,\
/*  96 */ 0x20, 0x10, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00,\
/* 104 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 112 */ 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00,\
/* 120 */ 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x04,\
/* 128 */ 0x04, 0x00, 0x00, 0x10, 0x10, 0x10, 0x00, 0x00,\
/* 136 */ 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 144 */ 0x06, 0x10, 0x00, 0x04, 0x1a, 0x00, 0x00, 0x00,\
/* 152 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 160 */ 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\

/* 168 */ 0x00, 0x00,}

/* The sqlite3P2Values() routine is able to run faster if it knows
** the value of the largest JUMP opcode.  The smaller the maximum
** JUMP opcode the better, so the mkopcodeh.tcl script that
** generated this include file strives to group all JUMP opcodes
** together near the beginning of the list.
*/
................................................................................
  unsigned nProgressOps;        /* Number of opcodes for progress callback */
#endif
#ifndef SQLITE_OMIT_VIRTUALTABLE
  int nVTrans;                  /* Allocated size of aVTrans */
  Hash aModule;                 /* populated by sqlite3_create_module() */
  VtabCtx *pVtabCtx;            /* Context for active vtab connect/create */
  VTable **aVTrans;             /* Virtual tables with open transactions */
  VTable *pDisconnect;          /* Disconnect these in next sqlite3_prepare() */
#endif
  Hash aFunc;                   /* Hash table of connection functions */
  Hash aCollSeq;                /* All collating sequences */
  BusyHandler busyHandler;      /* Busy callback */
  Db aDbStatic[2];              /* Static space for the 2 default backends */
  Savepoint *pSavepoint;        /* List of active savepoints */
  int busyTimeout;              /* Busy handler timeout, in msec */
................................................................................
#define SQLITE_LoadExtension  0x00010000  /* Enable load_extension */
#define SQLITE_LoadExtFunc    0x00020000  /* Enable load_extension() SQL func */
#define SQLITE_EnableTrigger  0x00040000  /* True to enable triggers */
#define SQLITE_DeferFKs       0x00080000  /* Defer all FK constraints */
#define SQLITE_QueryOnly      0x00100000  /* Disable database changes */
#define SQLITE_CellSizeCk     0x00200000  /* Check btree cell sizes on load */
#define SQLITE_Fts3Tokenizer  0x00400000  /* Enable fts3_tokenizer(2) */
#define SQLITE_EnableQPSG     0x00800000  /* Query Planner Stability Guarantee*/
#define SQLITE_TriggerEQP     0x01000000  /* Show trigger EXPLAIN QUERY PLAN */

/* Flags used only if debugging */
#ifdef SQLITE_DEBUG
#define SQLITE_SqlTrace       0x08000000  /* Debug print SQL as it executes */
#define SQLITE_VdbeListing    0x10000000  /* Debug listings of VDBE programs */
#define SQLITE_VdbeTrace      0x20000000  /* True to trace VDBE execution */
#define SQLITE_VdbeAddopTrace 0x40000000  /* Trace sqlite3VdbeAddOp() calls */
#define SQLITE_VdbeEQP        0x80000000  /* Debug EXPLAIN QUERY PLAN */
................................................................................
#define SQLITE_FUNC_COALESCE 0x0200 /* Built-in coalesce() or ifnull() */
#define SQLITE_FUNC_UNLIKELY 0x0400 /* Built-in unlikely() function */
#define SQLITE_FUNC_CONSTANT 0x0800 /* Constant inputs give a constant output */
#define SQLITE_FUNC_MINMAX   0x1000 /* True for min() and max() aggregates */
#define SQLITE_FUNC_SLOCHNG  0x2000 /* "Slow Change". Value constant during a
                                    ** single query - might change over time */
#define SQLITE_FUNC_AFFINITY 0x4000 /* Built-in affinity() function */
#define SQLITE_FUNC_OFFSET   0x8000 /* Built-in sqlite_offset() function */

/*
** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are
** used to create the initializers for the FuncDef structures.
**
**   FUNCTION(zName, nArg, iArg, bNC, xFunc)
**     Used to create a scalar function definition of a function zName
................................................................................
  unsigned idxType:2;      /* 1==UNIQUE, 2==PRIMARY KEY, 0==CREATE INDEX */
  unsigned bUnordered:1;   /* Use this index for == or IN queries only */
  unsigned uniqNotNull:1;  /* True if UNIQUE and NOT NULL for all columns */
  unsigned isResized:1;    /* True if resizeIndexObject() has been called */
  unsigned isCovering:1;   /* True if this is a covering index */
  unsigned noSkipScan:1;   /* Do not try to use skip-scan if true */
  unsigned hasStat1:1;     /* aiRowLogEst values come from sqlite_stat1 */
  unsigned bNoQuery:1;     /* Do not use this index to optimize queries */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  int nSample;             /* Number of elements in aSample[] */
  int nSampleCol;          /* Size of IndexSample.anEq[] and so on */
  tRowcnt *aAvgEq;         /* Average nEq values for keys not in aSample */
  IndexSample *aSample;    /* Samples of the left-most key */
  tRowcnt *aiRowEst;       /* Non-logarithmic stat1 data for this index */
  tRowcnt nRowEst0;        /* Non-logarithmic number of rows in the index */
................................................................................
};

/*
** The following are the meanings of bits in the Expr.flags field.
*/
#define EP_FromJoin  0x000001 /* Originates in ON/USING clause of outer join */
#define EP_Agg       0x000002 /* Contains one or more aggregate functions */
#define EP_HasFunc   0x000004 /* Contains one or more functions of any kind */
                  /* 0x000008 // available for use */
#define EP_Distinct  0x000010 /* Aggregate function with DISTINCT keyword */
#define EP_VarSelect 0x000020 /* pSelect is correlated, not constant */
#define EP_DblQuoted 0x000040 /* token.z was originally in "..." */
#define EP_InfixFunc 0x000080 /* True for an infix function: LIKE, GLOB, etc */
#define EP_Collate   0x000100 /* Tree contains a TK_COLLATE operator */
#define EP_Generic   0x000200 /* Ignore COLLATE or affinity on this tree */
................................................................................
#define EP_ConstFunc 0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */
#define EP_CanBeNull 0x100000 /* Can be null despite NOT NULL constraint */
#define EP_Subquery  0x200000 /* Tree contains a TK_SELECT operator */
#define EP_Alias     0x400000 /* Is an alias for a result set column */
#define EP_Leaf      0x800000 /* Expr.pLeft, .pRight, .u.pSelect all NULL */

/*
** The EP_Propagate mask is a set of properties that automatically propagate
** upwards into parent nodes.
*/
#define EP_Propagate (EP_Collate|EP_Subquery|EP_HasFunc)

/*
** These macros can be used to test, set, or clear bits in the
** Expr.flags field.
*/
#define ExprHasProperty(E,P)     (((E)->flags&(P))!=0)
#define ExprHasAllProperty(E,P)  (((E)->flags&(P))==(P))
................................................................................
        u16 iAlias;           /* Index into Parse.aAlias[] for zName */
      } x;
      int iConstExprReg;      /* Register in which Expr value is cached */
    } u;
  } a[1];                  /* One slot for each expression in the list */
};












/*
** An instance of this structure can hold a simple list of identifiers,
** such as the list "a,b,c" in the following statements:
**
**      INSERT INTO t(a,b,c) VALUES ...;
**      CREATE INDEX idx ON t(a,b,c);
**      CREATE TRIGGER trig BEFORE UPDATE ON t(a,b,c) ...;
................................................................................
#define NC_PartIdx   0x0002  /* True if resolving a partial index WHERE */
#define NC_IsCheck   0x0004  /* True if resolving names in a CHECK constraint */
#define NC_InAggFunc 0x0008  /* True if analyzing arguments to an agg func */
#define NC_HasAgg    0x0010  /* One or more aggregate functions seen */
#define NC_IdxExpr   0x0020  /* True if resolving columns of CREATE INDEX */
#define NC_VarSelect 0x0040  /* A correlated subquery has been seen */
#define NC_MinMaxAgg 0x1000  /* min/max aggregates seen.  See note above */
#define NC_Complex   0x2000  /* True if a function or subquery seen */

/*
** An instance of the following structure contains all information
** needed to generate code for a single SELECT statement.
**
** nLimit is set to -1 if there is no LIMIT clause.  nOffset is set to 0.
** If there is a LIMIT clause, the parser sets nLimit to the value of the
................................................................................
  Expr *pWhere;          /* The WHERE clause */
  ExprList *pGroupBy;    /* The GROUP BY clause */
  Expr *pHaving;         /* The HAVING clause */
  ExprList *pOrderBy;    /* The ORDER BY clause */
  Select *pPrior;        /* Prior select in a compound select statement */
  Select *pNext;         /* Next select to the left in a compound */
  Expr *pLimit;          /* LIMIT expression. NULL means not used. */

  With *pWith;           /* WITH clause attached to this select. Or NULL. */
};

/*
** Allowed values for Select.selFlags.  The "SF" prefix stands for
** "Select Flag".
**
................................................................................
#define SF_NestedFrom     0x00800  /* Part of a parenthesized FROM clause */
#define SF_MinMaxAgg      0x01000  /* Aggregate containing min() or max() */
#define SF_Recursive      0x02000  /* The recursive part of a recursive CTE */
#define SF_FixedLimit     0x04000  /* nSelectRow set by a constant LIMIT */
#define SF_MaybeConvert   0x08000  /* Need convertCompoundSelectToSubquery() */
#define SF_Converted      0x10000  /* By convertCompoundSelectToSubquery() */
#define SF_IncludeHidden  0x20000  /* Include hidden columns in output */
#define SF_ComplexResult  0x40000  /* Result set contains subquery or function */


/*
** The results of a SELECT can be distributed in several ways, as defined
** by one of the following macros.  The "SRT" prefix means "SELECT Result
** Type".
**
................................................................................
  int nRangeReg;       /* Size of the temporary register block */
  int iRangeReg;       /* First register in temporary register block */
  int nErr;            /* Number of errors seen */
  int nTab;            /* Number of previously allocated VDBE cursors */
  int nMem;            /* Number of memory cells used so far */
  int nOpAlloc;        /* Number of slots allocated for Vdbe.aOp[] */
  int szOpAlloc;       /* Bytes of memory space allocated for Vdbe.aOp[] */
  int iSelfTab;        /* Table associated with an index on expr, or negative
                       ** of the base register during check-constraint eval */
  int iCacheLevel;     /* ColCache valid when aColCache[].iLevel<=iCacheLevel */
  int iCacheCnt;       /* Counter used to generate aColCache[].lru values */
  int nLabel;          /* Number of labels used */
  int *aLabel;         /* Space to hold the labels */
  ExprList *pConstExpr;/* Constant expressions */
  Token constraintName;/* Name of the constraint currently being parsed */
................................................................................
  u8 orconf;           /* OE_Rollback etc. */
  Trigger *pTrig;      /* The trigger that this step is a part of */
  Select *pSelect;     /* SELECT statement or RHS of INSERT INTO SELECT ... */
  char *zTarget;       /* Target table for DELETE, UPDATE, INSERT */
  Expr *pWhere;        /* The WHERE clause for DELETE or UPDATE steps */
  ExprList *pExprList; /* SET clause for UPDATE. */
  IdList *pIdList;     /* Column names for INSERT */
  char *zSpan;         /* Original SQL text of this command */
  TriggerStep *pNext;  /* Next in the link-list */
  TriggerStep *pLast;  /* Last element in link-list. Valid for 1st elem only */
};

/*
** The following structure contains information used by the sqliteFix...
** routines as they walk the parse tree to make database references
................................................................................
/*
** The SQLITE_*_BKPT macros are substitutes for the error codes with
** the same name but without the _BKPT suffix.  These macros invoke
** routines that report the line-number on which the error originated
** using sqlite3_log().  The routines also provide a convenient place
** to set a debugger breakpoint.
*/
SQLITE_PRIVATE int sqlite3ReportError(int iErr, int lineno, const char *zType);
SQLITE_PRIVATE int sqlite3CorruptError(int);
SQLITE_PRIVATE int sqlite3MisuseError(int);
SQLITE_PRIVATE int sqlite3CantopenError(int);
#define SQLITE_CORRUPT_BKPT sqlite3CorruptError(__LINE__)
#define SQLITE_MISUSE_BKPT sqlite3MisuseError(__LINE__)
#define SQLITE_CANTOPEN_BKPT sqlite3CantopenError(__LINE__)
#ifdef SQLITE_DEBUG
................................................................................
SQLITE_PRIVATE void *sqlite3Malloc(u64);
SQLITE_PRIVATE void *sqlite3MallocZero(u64);
SQLITE_PRIVATE void *sqlite3DbMallocZero(sqlite3*, u64);
SQLITE_PRIVATE void *sqlite3DbMallocRaw(sqlite3*, u64);
SQLITE_PRIVATE void *sqlite3DbMallocRawNN(sqlite3*, u64);
SQLITE_PRIVATE char *sqlite3DbStrDup(sqlite3*,const char*);
SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3*,const char*, u64);
SQLITE_PRIVATE char *sqlite3DbSpanDup(sqlite3*,const char*,const char*);
SQLITE_PRIVATE void *sqlite3Realloc(void*, u64);
SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *, void *, u64);
SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *, void *, u64);
SQLITE_PRIVATE void sqlite3DbFree(sqlite3*, void*);
SQLITE_PRIVATE void sqlite3DbFreeNN(sqlite3*, void*);
SQLITE_PRIVATE int sqlite3MallocSize(void*);
SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3*, void*);
................................................................................
SQLITE_PRIVATE void sqlite3StatusDown(int, int);
SQLITE_PRIVATE void sqlite3StatusHighwater(int, int);
SQLITE_PRIVATE int sqlite3LookasideUsed(sqlite3*,int*);

/* Access to mutexes used by sqlite3_status() */
SQLITE_PRIVATE sqlite3_mutex *sqlite3Pcache1Mutex(void);
SQLITE_PRIVATE sqlite3_mutex *sqlite3MallocMutex(void);

#if defined(SQLITE_ENABLE_MULTITHREADED_CHECKS) && !defined(SQLITE_MUTEX_OMIT)
SQLITE_PRIVATE void sqlite3MutexWarnOnContention(sqlite3_mutex*);
#else
# define sqlite3MutexWarnOnContention(x)
#endif

#ifndef SQLITE_OMIT_FLOATING_POINT
SQLITE_PRIVATE   int sqlite3IsNaN(double);
#else
# define sqlite3IsNaN(X)  0
#endif

................................................................................
SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*);
SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32);
SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3*, Expr*);
SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*);
SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*);
SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList*,int);
SQLITE_PRIVATE void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int);
SQLITE_PRIVATE void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*);
SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3*, ExprList*);
SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList*);
SQLITE_PRIVATE int sqlite3Init(sqlite3*, char**);
SQLITE_PRIVATE int sqlite3InitCallback(void*, int, char**, char**);
SQLITE_PRIVATE void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);
#ifndef SQLITE_OMIT_VIRTUALTABLE
SQLITE_PRIVATE Module *sqlite3PragmaVtabRegister(sqlite3*,const char *zName);
................................................................................
#else
# define sqlite3ColumnPropertiesFromName(T,C) /* no-op */
#endif
SQLITE_PRIVATE void sqlite3AddColumn(Parse*,Token*,Token*);
SQLITE_PRIVATE void sqlite3AddNotNull(Parse*, int);
SQLITE_PRIVATE void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int);
SQLITE_PRIVATE void sqlite3AddCheckConstraint(Parse*, Expr*);
SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse*,Expr*,const char*,const char*);
SQLITE_PRIVATE void sqlite3AddCollateType(Parse*, Token*);
SQLITE_PRIVATE void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*);
SQLITE_PRIVATE int sqlite3ParseUri(const char*,const char*,unsigned int*,
                    sqlite3_vfs**,char**,char **);
SQLITE_PRIVATE Btree *sqlite3DbNameToBtree(sqlite3*,const char*);

#ifdef SQLITE_UNTESTABLE
................................................................................
SQLITE_PRIVATE void sqlite3SrcListDelete(sqlite3*, SrcList*);
SQLITE_PRIVATE Index *sqlite3AllocateIndexObject(sqlite3*,i16,int,char**);
SQLITE_PRIVATE void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*,
                          Expr*, int, int, u8);
SQLITE_PRIVATE void sqlite3DropIndex(Parse*, SrcList*, int);
SQLITE_PRIVATE int sqlite3Select(Parse*, Select*, SelectDest*);
SQLITE_PRIVATE Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*,
                         Expr*,ExprList*,u32,Expr*);
SQLITE_PRIVATE void sqlite3SelectDelete(sqlite3*, Select*);
SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse*, SrcList*);
SQLITE_PRIVATE int sqlite3IsReadOnly(Parse*, Table*, int);
SQLITE_PRIVATE void sqlite3OpenTable(Parse*, int iCur, int iDb, Table*, int);
#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY)
SQLITE_PRIVATE Expr *sqlite3LimitWhere(Parse*,SrcList*,Expr*,ExprList*,Expr*,char*);
#endif
SQLITE_PRIVATE void sqlite3DeleteFrom(Parse*, SrcList*, Expr*, ExprList*, Expr*);
SQLITE_PRIVATE void sqlite3Update(Parse*, SrcList*, ExprList*,Expr*,int,ExprList*,Expr*);
SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(Parse*,SrcList*,Expr*,ExprList*,ExprList*,u16,int);
SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo*);
SQLITE_PRIVATE LogEst sqlite3WhereOutputRowCount(WhereInfo*);
SQLITE_PRIVATE int sqlite3WhereIsDistinct(WhereInfo*);
SQLITE_PRIVATE int sqlite3WhereIsOrdered(WhereInfo*);
SQLITE_PRIVATE int sqlite3WhereOrderedInnerLoop(WhereInfo*);
SQLITE_PRIVATE int sqlite3WhereIsSorted(WhereInfo*);
................................................................................
SQLITE_PRIVATE void sqlite3RegisterDateTimeFunctions(void);
SQLITE_PRIVATE void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3*);
SQLITE_PRIVATE int sqlite3SafetyCheckOk(sqlite3*);
SQLITE_PRIVATE int sqlite3SafetyCheckSickOrOk(sqlite3*);
SQLITE_PRIVATE void sqlite3ChangeCookie(Parse*, int);

#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
SQLITE_PRIVATE void sqlite3MaterializeView(Parse*, Table*, Expr*, ExprList*,Expr*,int);
#endif

#ifndef SQLITE_OMIT_TRIGGER
SQLITE_PRIVATE   void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*,
                           Expr*,int, int);
SQLITE_PRIVATE   void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*);
SQLITE_PRIVATE   void sqlite3DropTrigger(Parse*, SrcList*, int);
................................................................................
SQLITE_PRIVATE   Trigger *sqlite3TriggersExist(Parse *, Table*, int, ExprList*, int *pMask);
SQLITE_PRIVATE   Trigger *sqlite3TriggerList(Parse *, Table *);
SQLITE_PRIVATE   void sqlite3CodeRowTrigger(Parse*, Trigger *, int, ExprList*, int, Table *,
                            int, int, int);
SQLITE_PRIVATE   void sqlite3CodeRowTriggerDirect(Parse *, Trigger *, Table *, int, int, int);
  void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
SQLITE_PRIVATE   void sqlite3DeleteTriggerStep(sqlite3*, TriggerStep*);
SQLITE_PRIVATE   TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*,
                                        const char*,const char*);
SQLITE_PRIVATE   TriggerStep *sqlite3TriggerInsertStep(sqlite3*,Token*, IdList*,
                                        Select*,u8,const char*,const char*);
SQLITE_PRIVATE   TriggerStep *sqlite3TriggerUpdateStep(sqlite3*,Token*,ExprList*, Expr*, u8,
                                        const char*,const char*);
SQLITE_PRIVATE   TriggerStep *sqlite3TriggerDeleteStep(sqlite3*,Token*, Expr*,
                                        const char*,const char*);
SQLITE_PRIVATE   void sqlite3DeleteTrigger(sqlite3*, Trigger*);
SQLITE_PRIVATE   void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
SQLITE_PRIVATE   u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int);
# define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p))
# define sqlite3IsToplevel(p) ((p)->pToplevel==0)
#else
# define sqlite3TriggersExist(B,C,D,E,F) 0
................................................................................
  #define sqlite3ConnectionUnlocked(x)
  #define sqlite3ConnectionClosed(x)
#endif

#ifdef SQLITE_DEBUG
SQLITE_PRIVATE   void sqlite3ParserTrace(FILE*, char *);
#endif
#if defined(YYCOVERAGE)
SQLITE_PRIVATE   int sqlite3ParserCoverage(FILE*);
#endif

/*
** If the SQLITE_ENABLE IOTRACE exists then the global variable
** sqlite3IoTrace is a pointer to a printf-like routine used to
** print I/O tracing messages.
*/
#ifdef SQLITE_ENABLE_IOTRACE
................................................................................
  FuncDef *pFunc;         /* Pointer to function information */
  Mem *pMem;              /* Memory cell used to store aggregate context */
  Vdbe *pVdbe;            /* The VM that owns this context */
  int iOp;                /* Instruction number of OP_Function */
  int isError;            /* Error code returned by the function. */
  u8 skipFlag;            /* Skip accumulator loading if true */
  u8 fErrorOrAux;         /* isError!=0 or pVdbe->pAuxData modified */
  u8 bVtabNoChng;         /* Fetching an unchanging column in a vtab UPDATE */
  u8 argc;                /* Number of arguments */
  sqlite3_value *argv[1]; /* Argument set */
};

/* A bitfield type for use inside of structures.  Always follow with :N where
** N is the number of bits.
*/
................................................................................
** dates afterwards, depending on locale.  Beware of this difference.
**
** The conversion algorithms are implemented based on descriptions
** in the following text:
**
**      Jean Meeus
**      Astronomical Algorithms, 2nd Edition, 1998
**      ISBN 0-943396-61-1
**      Willmann-Bell, Inc
**      Richmond, Virginia (USA)
*/
/* #include "sqliteInt.h" */
/* #include <stdlib.h> */
/* #include <assert.h> */
#include <time.h>
................................................................................
** allocate a mutex while the system is uninitialized.
*/
static SQLITE_WSD int mutexIsInit = 0;
#endif /* SQLITE_DEBUG && !defined(SQLITE_MUTEX_OMIT) */


#ifndef SQLITE_MUTEX_OMIT

#ifdef SQLITE_ENABLE_MULTITHREADED_CHECKS
/*
** This block (enclosed by SQLITE_ENABLE_MULTITHREADED_CHECKS) contains
** the implementation of a wrapper around the system default mutex
** implementation (sqlite3DefaultMutex()). 
**
** Most calls are passed directly through to the underlying default
** mutex implementation. Except, if a mutex is configured by calling
** sqlite3MutexWarnOnContention() on it, then if contention is ever
** encountered within xMutexEnter() a warning is emitted via sqlite3_log().
**
** This type of mutex is used as the database handle mutex when testing
** apps that usually use SQLITE_CONFIG_MULTITHREAD mode.
*/

/* 
** Type for all mutexes used when SQLITE_ENABLE_MULTITHREADED_CHECKS
** is defined. Variable CheckMutex.mutex is a pointer to the real mutex
** allocated by the system mutex implementation. Variable iType is usually set
** to the type of mutex requested - SQLITE_MUTEX_RECURSIVE, SQLITE_MUTEX_FAST
** or one of the static mutex identifiers. Or, if this is a recursive mutex
** that has been configured using sqlite3MutexWarnOnContention(), it is
** set to SQLITE_MUTEX_WARNONCONTENTION.
*/
typedef struct CheckMutex CheckMutex;
struct CheckMutex {
  int iType;
  sqlite3_mutex *mutex;
};

#define SQLITE_MUTEX_WARNONCONTENTION  (-1)

/* 
** Pointer to real mutex methods object used by the CheckMutex
** implementation. Set by checkMutexInit(). 
*/
static SQLITE_WSD const sqlite3_mutex_methods *pGlobalMutexMethods;

#ifdef SQLITE_DEBUG
static int checkMutexHeld(sqlite3_mutex *p){
  return pGlobalMutexMethods->xMutexHeld(((CheckMutex*)p)->mutex);
}
static int checkMutexNotheld(sqlite3_mutex *p){
  return pGlobalMutexMethods->xMutexNotheld(((CheckMutex*)p)->mutex);
}
#endif

/*
** Initialize and deinitialize the mutex subsystem.
*/
static int checkMutexInit(void){ 
  pGlobalMutexMethods = sqlite3DefaultMutex();
  return SQLITE_OK; 
}
static int checkMutexEnd(void){ 
  pGlobalMutexMethods = 0;
  return SQLITE_OK; 
}

/*
** Allocate a mutex.
*/
static sqlite3_mutex *checkMutexAlloc(int iType){
  static CheckMutex staticMutexes[] = {
    {2, 0}, {3, 0}, {4, 0}, {5, 0},
    {6, 0}, {7, 0}, {8, 0}, {9, 0},
    {10, 0}, {11, 0}, {12, 0}, {13, 0}
  };
  CheckMutex *p = 0;

  assert( SQLITE_MUTEX_RECURSIVE==1 && SQLITE_MUTEX_FAST==0 );
  if( iType<2 ){
    p = sqlite3MallocZero(sizeof(CheckMutex));
    if( p==0 ) return 0;
    p->iType = iType;
  }else{
#ifdef SQLITE_ENABLE_API_ARMOR
    if( iType-2>=ArraySize(staticMutexes) ){
      (void)SQLITE_MISUSE_BKPT;
      return 0;
    }
#endif
    p = &staticMutexes[iType-2];
  }

  if( p->mutex==0 ){
    p->mutex = pGlobalMutexMethods->xMutexAlloc(iType);
    if( p->mutex==0 ){
      if( iType<2 ){
        sqlite3_free(p);
      }
      p = 0;
    }
  }

  return (sqlite3_mutex*)p;
}

/*
** Free a mutex.
*/
static void checkMutexFree(sqlite3_mutex *p){
  assert( SQLITE_MUTEX_RECURSIVE<2 );
  assert( SQLITE_MUTEX_FAST<2 );
  assert( SQLITE_MUTEX_WARNONCONTENTION<2 );

#if SQLITE_ENABLE_API_ARMOR
  if( ((CheckMutex*)p)->iType<2 )
#endif
  {
    CheckMutex *pCheck = (CheckMutex*)p;
    pGlobalMutexMethods->xMutexFree(pCheck->mutex);
    sqlite3_free(pCheck);
  }
#ifdef SQLITE_ENABLE_API_ARMOR
  else{
    (void)SQLITE_MISUSE_BKPT;
  }
#endif
}

/*
** Enter the mutex.
*/
static void checkMutexEnter(sqlite3_mutex *p){
  CheckMutex *pCheck = (CheckMutex*)p;
  if( pCheck->iType==SQLITE_MUTEX_WARNONCONTENTION ){
    if( SQLITE_OK==pGlobalMutexMethods->xMutexTry(pCheck->mutex) ){
      return;
    }
    sqlite3_log(SQLITE_MISUSE, 
        "illegal multi-threaded access to database connection"
    );
  }
  pGlobalMutexMethods->xMutexEnter(pCheck->mutex);
}

/*
** Enter the mutex (do not block).
*/
static int checkMutexTry(sqlite3_mutex *p){
  CheckMutex *pCheck = (CheckMutex*)p;
  return pGlobalMutexMethods->xMutexTry(pCheck->mutex);
}

/*
** Leave the mutex.
*/
static void checkMutexLeave(sqlite3_mutex *p){
  CheckMutex *pCheck = (CheckMutex*)p;
  pGlobalMutexMethods->xMutexLeave(pCheck->mutex);
}

sqlite3_mutex_methods const *multiThreadedCheckMutex(void){
  static const sqlite3_mutex_methods sMutex = {
    checkMutexInit,
    checkMutexEnd,
    checkMutexAlloc,
    checkMutexFree,
    checkMutexEnter,
    checkMutexTry,
    checkMutexLeave,
#ifdef SQLITE_DEBUG
    checkMutexHeld,
    checkMutexNotheld
#else
    0,
    0
#endif
  };
  return &sMutex;
}

/*
** Mark the SQLITE_MUTEX_RECURSIVE mutex passed as the only argument as
** one on which there should be no contention.
*/
SQLITE_PRIVATE void sqlite3MutexWarnOnContention(sqlite3_mutex *p){
  if( sqlite3GlobalConfig.mutex.xMutexAlloc==checkMutexAlloc ){
    CheckMutex *pCheck = (CheckMutex*)p;
    assert( pCheck->iType==SQLITE_MUTEX_RECURSIVE );
    pCheck->iType = SQLITE_MUTEX_WARNONCONTENTION;
  }
}
#endif   /* ifdef SQLITE_ENABLE_MULTITHREADED_CHECKS */

/*
** Initialize the mutex system.
*/
SQLITE_PRIVATE int sqlite3MutexInit(void){ 
  int rc = SQLITE_OK;
  if( !sqlite3GlobalConfig.mutex.xMutexAlloc ){
    /* If the xMutexAlloc method has not been set, then the user did not
................................................................................
    ** sqlite3_initialize() being called. This block copies pointers to
    ** the default implementation into the sqlite3GlobalConfig structure.
    */
    sqlite3_mutex_methods const *pFrom;
    sqlite3_mutex_methods *pTo = &sqlite3GlobalConfig.mutex;

    if( sqlite3GlobalConfig.bCoreMutex ){
#ifdef SQLITE_ENABLE_MULTITHREADED_CHECKS
      pFrom = multiThreadedCheckMutex();
#else
      pFrom = sqlite3DefaultMutex();
#endif
    }else{
      pFrom = sqlite3NoopMutex();
    }
    pTo->xMutexInit = pFrom->xMutexInit;
    pTo->xMutexEnd = pFrom->xMutexEnd;
    pTo->xMutexFree = pFrom->xMutexFree;
    pTo->xMutexEnter = pFrom->xMutexEnter;
................................................................................
SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex *p){
  assert( p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld );
  return p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld(p);
}
#endif

#endif /* !defined(SQLITE_MUTEX_OMIT) */


/************** End of mutex.c ***********************************************/
/************** Begin file mutex_noop.c **************************************/
/*
** 2008 October 07
**
** The author disclaims copyright to this source code.  In place of
................................................................................
  zNew = sqlite3DbMallocRawNN(db, n+1);
  if( zNew ){
    memcpy(zNew, z, (size_t)n);
    zNew[n] = 0;
  }
  return zNew;
}

/*
** The text between zStart and zEnd represents a phrase within a larger
** SQL statement.  Make a copy of this phrase in space obtained form
** sqlite3DbMalloc().  Omit leading and trailing whitespace.
*/
SQLITE_PRIVATE char *sqlite3DbSpanDup(sqlite3 *db, const char *zStart, const char *zEnd){
  int n;
  while( sqlite3Isspace(zStart[0]) ) zStart++;
  n = (int)(zEnd - zStart);
  while( ALWAYS(n>0) && sqlite3Isspace(zStart[n-1]) ) n--;
  return sqlite3DbStrNDup(db, zStart, n);
}

/*
** Free any prior content in *pz and replace it with a copy of zNew.
*/
SQLITE_PRIVATE void sqlite3SetString(char **pz, sqlite3 *db, const char *zNew){
  sqlite3DbFree(db, *pz);
  *pz = sqlite3DbStrDup(db, zNew);
................................................................................
  StrAccum acc;
  char zBuf[500];
  sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
  va_start(ap,zFormat);
  sqlite3VXPrintf(&acc, zFormat, ap);
  va_end(ap);
  sqlite3StrAccumFinish(&acc);
#ifdef SQLITE_OS_TRACE_PROC
  {
    extern void SQLITE_OS_TRACE_PROC(const char *zBuf, int nBuf);
    SQLITE_OS_TRACE_PROC(zBuf, sizeof(zBuf));
  }
#else
  fprintf(stdout,"%s", zBuf);
  fflush(stdout);
#endif
}
#endif


/*
** variable-argument wrapper around sqlite3VXPrintf().  The bFlags argument
** can contain the bit SQLITE_PRINTF_INTERNAL enable internal formats.
................................................................................
      n = 0;
      if( p->pSrc && p->pSrc->nSrc ) n++;
      if( p->pWhere ) n++;
      if( p->pGroupBy ) n++;
      if( p->pHaving ) n++;
      if( p->pOrderBy ) n++;
      if( p->pLimit ) n++;

    }
    sqlite3TreeViewExprList(pView, p->pEList, (n--)>0, "result-set");
    if( p->pSrc && p->pSrc->nSrc ){
      int i;
      pView = sqlite3TreeViewPush(pView, (n--)>0);
      sqlite3TreeViewLine(pView, "FROM");
      for(i=0; i<p->pSrc->nSrc; i++){
................................................................................
      sqlite3TreeViewPop(pView);
    }
    if( p->pOrderBy ){
      sqlite3TreeViewExprList(pView, p->pOrderBy, (n--)>0, "ORDERBY");
    }
    if( p->pLimit ){
      sqlite3TreeViewItem(pView, "LIMIT", (n--)>0);
      sqlite3TreeViewExpr(pView, p->pLimit->pLeft, p->pLimit->pRight!=0);
      if( p->pLimit->pRight ){
        sqlite3TreeViewItem(pView, "OFFSET", (n--)>0);
        sqlite3TreeViewExpr(pView, p->pLimit->pRight, 0);
        sqlite3TreeViewPop(pView);
      }



      sqlite3TreeViewPop(pView);
    }
    if( p->pPrior ){
      const char *zOp = "UNION";
      switch( p->op ){
        case TK_ALL:         zOp = "UNION ALL";  break;
        case TK_INTERSECT:   zOp = "INTERSECT";  break;
................................................................................
  if( pList==0 ){
    sqlite3TreeViewLine(pView, "%s (empty)", zLabel);
  }else{
    int i;
    sqlite3TreeViewLine(pView, "%s", zLabel);
    for(i=0; i<pList->nExpr; i++){
      int j = pList->a[i].u.x.iOrderByCol;
      char *zName = pList->a[i].zName;
      if( j || zName ){
        sqlite3TreeViewPush(pView, 0);
      }
      if( zName ){
        sqlite3TreeViewLine(pView, "AS %s", zName);
      }
      if( j ){
        sqlite3TreeViewLine(pView, "iOrderByCol=%d", j);
      }
      sqlite3TreeViewExpr(pView, pList->a[i].pExpr, i<pList->nExpr-1);
      if( j || zName ){
        sqlite3TreeViewPop(pView);
      }
    }
  }
}
SQLITE_PRIVATE void sqlite3TreeViewExprList(
  TreeView *pView,
  const ExprList *pList,
  u8 moreToFollow,
................................................................................
    return 1;
  }
  a = (unsigned char *)zLeft;
  b = (unsigned char *)zRight;
  while( N-- > 0 && *a!=0 && UpperToLower[*a]==UpperToLower[*b]){ a++; b++; }
  return N<0 ? 0 : UpperToLower[*a] - UpperToLower[*b];
}

/*
** Compute 10 to the E-th power.  Examples:  E==1 results in 10.
** E==2 results in 100.  E==50 results in 1.0e50.
**
** This routine only works for values of E between 1 and 341.
*/
static LONGDOUBLE_TYPE sqlite3Pow10(int E){
  LONGDOUBLE_TYPE x = 10.0;
  LONGDOUBLE_TYPE r = 1.0;
  while(1){
    if( E & 1 ) r *= x;
    E >>= 1;
    if( E==0 ) break;
    x *= x;
  }
  return r; 
}

/*
** The string z[] is an text representation of a real number.
** Convert this string to a double and write it into *pResult.
**
** The string z[] is length bytes in length (bytes, not characters) and
** uses the encoding enc.  The string is not necessarily zero-terminated.
................................................................................
  }else if( *z=='+' ){
    z+=incr;
  }

  /* copy max significant digits to significand */
  while( z<zEnd && sqlite3Isdigit(*z) && s<((LARGEST_INT64-9)/10) ){
    s = s*10 + (*z - '0');
    z+=incr; nDigits++;
  }

  /* skip non-significant significand digits
  ** (increase exponent by d to shift decimal left) */
  while( z<zEnd && sqlite3Isdigit(*z) ){ z+=incr; nDigits++; d++; }
  if( z>=zEnd ) goto do_atof_calc;

  /* if decimal point is present */
  if( *z=='.' ){
    z+=incr;
    /* copy digits from after decimal to significand
    ** (decrease exponent by d to shift decimal right) */
    while( z<zEnd && sqlite3Isdigit(*z) ){
      if( s<((LARGEST_INT64-9)/10) ){
        s = s*10 + (*z - '0');
        d--;
      }
      z+=incr; nDigits++;
    }
  }
  if( z>=zEnd ) goto do_atof_calc;

  /* if exponent is present */
  if( *z=='e' || *z=='E' ){
    z+=incr;
................................................................................

    /* adjust the sign of significand */
    s = sign<0 ? -s : s;

    if( e==0 ){                                         /*OPTIMIZATION-IF-TRUE*/
      result = (double)s;
    }else{

      /* attempt to handle extremely small/large numbers better */
      if( e>307 ){                                      /*OPTIMIZATION-IF-TRUE*/
        if( e<342 ){                                    /*OPTIMIZATION-IF-TRUE*/
          LONGDOUBLE_TYPE scale = sqlite3Pow10(e-308);
          if( esign<0 ){
            result = s / scale;
            result /= 1.0e+308;
          }else{
            result = s * scale;
            result *= 1.0e+308;
          }
................................................................................
            result = INFINITY*s;
#else
            result = 1e308*1e308*s;  /* Infinity */
#endif
          }
        }
      }else{
        LONGDOUBLE_TYPE scale = sqlite3Pow10(e);



        if( esign<0 ){
          result = s / scale;
        }else{
          result = s * scale;
        }
      }
    }
................................................................................
    /*  89 */ "Subtract"         OpHelp("r[P3]=r[P2]-r[P1]"),
    /*  90 */ "Multiply"         OpHelp("r[P3]=r[P1]*r[P2]"),
    /*  91 */ "Divide"           OpHelp("r[P3]=r[P2]/r[P1]"),
    /*  92 */ "Remainder"        OpHelp("r[P3]=r[P2]%r[P1]"),
    /*  93 */ "Concat"           OpHelp("r[P3]=r[P2]+r[P1]"),
    /*  94 */ "Compare"          OpHelp("r[P1@P3] <-> r[P2@P3]"),
    /*  95 */ "BitNot"           OpHelp("r[P1]= ~r[P1]"),
    /*  96 */ "Offset"           OpHelp("r[P3] = sqlite_offset(P1)"),
    /*  97 */ "String8"          OpHelp("r[P2]='P4'"),
    /*  98 */ "Column"           OpHelp("r[P3]=PX"),
    /*  99 */ "Affinity"         OpHelp("affinity(r[P1@P2])"),
    /* 100 */ "MakeRecord"       OpHelp("r[P3]=mkrec(r[P1@P2])"),
    /* 101 */ "Count"            OpHelp("r[P2]=count()"),
    /* 102 */ "ReadCookie"       OpHelp(""),
    /* 103 */ "SetCookie"        OpHelp(""),
    /* 104 */ "ReopenIdx"        OpHelp("root=P2 iDb=P3"),
    /* 105 */ "OpenRead"         OpHelp("root=P2 iDb=P3"),
    /* 106 */ "OpenWrite"        OpHelp("root=P2 iDb=P3"),
    /* 107 */ "OpenDup"          OpHelp(""),
    /* 108 */ "OpenAutoindex"    OpHelp("nColumn=P2"),
    /* 109 */ "OpenEphemeral"    OpHelp("nColumn=P2"),
    /* 110 */ "SorterOpen"       OpHelp(""),
    /* 111 */ "SequenceTest"     OpHelp("if( cursor[P1].ctr++ ) pc = P2"),
    /* 112 */ "OpenPseudo"       OpHelp("P3 columns in r[P2]"),
    /* 113 */ "Close"            OpHelp(""),
    /* 114 */ "ColumnsUsed"      OpHelp(""),
    /* 115 */ "Sequence"         OpHelp("r[P2]=cursor[P1].ctr++"),
    /* 116 */ "NewRowid"         OpHelp("r[P2]=rowid"),
    /* 117 */ "Insert"           OpHelp("intkey=r[P3] data=r[P2]"),
    /* 118 */ "InsertInt"        OpHelp("intkey=P3 data=r[P2]"),
    /* 119 */ "Delete"           OpHelp(""),
    /* 120 */ "ResetCount"       OpHelp(""),
    /* 121 */ "SorterCompare"    OpHelp("if key(P1)!=trim(r[P3],P4) goto P2"),
    /* 122 */ "SorterData"       OpHelp("r[P2]=data"),
    /* 123 */ "RowData"          OpHelp("r[P2]=data"),
    /* 124 */ "Rowid"            OpHelp("r[P2]=rowid"),
    /* 125 */ "NullRow"          OpHelp(""),
    /* 126 */ "SeekEnd"          OpHelp(""),
    /* 127 */ "SorterInsert"     OpHelp("key=r[P2]"),
    /* 128 */ "IdxInsert"        OpHelp("key=r[P2]"),
    /* 129 */ "IdxDelete"        OpHelp("key=r[P2@P3]"),
    /* 130 */ "DeferredSeek"     OpHelp("Move P3 to P1.rowid if needed"),
    /* 131 */ "IdxRowid"         OpHelp("r[P2]=rowid"),

    /* 132 */ "Real"             OpHelp("r[P2]=P4"),
    /* 133 */ "Destroy"          OpHelp(""),
    /* 134 */ "Clear"            OpHelp(""),
    /* 135 */ "ResetSorter"      OpHelp(""),
    /* 136 */ "CreateBtree"      OpHelp("r[P2]=root iDb=P1 flags=P3"),
    /* 137 */ "SqlExec"          OpHelp(""),
    /* 138 */ "ParseSchema"      OpHelp(""),
    /* 139 */ "LoadAnalysis"     OpHelp(""),
    /* 140 */ "DropTable"        OpHelp(""),
    /* 141 */ "DropIndex"        OpHelp(""),
    /* 142 */ "DropTrigger"      OpHelp(""),
    /* 143 */ "IntegrityCk"      OpHelp(""),
    /* 144 */ "RowSetAdd"        OpHelp("rowset(P1)=r[P2]"),
    /* 145 */ "Param"            OpHelp(""),
    /* 146 */ "FkCounter"        OpHelp("fkctr[P1]+=P2"),
    /* 147 */ "MemMax"           OpHelp("r[P1]=max(r[P1],r[P2])"),
    /* 148 */ "OffsetLimit"      OpHelp("if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"),
    /* 149 */ "AggStep0"         OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 150 */ "AggStep"          OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 151 */ "AggFinal"         OpHelp("accum=r[P1] N=P2"),
    /* 152 */ "Expire"           OpHelp(""),
    /* 153 */ "TableLock"        OpHelp("iDb=P1 root=P2 write=P3"),
    /* 154 */ "VBegin"           OpHelp(""),
    /* 155 */ "VCreate"          OpHelp(""),
    /* 156 */ "VDestroy"         OpHelp(""),
    /* 157 */ "VOpen"            OpHelp(""),
    /* 158 */ "VColumn"          OpHelp("r[P3]=vcolumn(P2)"),
    /* 159 */ "VRename"          OpHelp(""),
    /* 160 */ "Pagecount"        OpHelp(""),
    /* 161 */ "MaxPgcnt"         OpHelp(""),
    /* 162 */ "PureFunc0"        OpHelp(""),
    /* 163 */ "Function0"        OpHelp("r[P3]=func(r[P2@P5])"),
    /* 164 */ "PureFunc"         OpHelp(""),
    /* 165 */ "Function"         OpHelp("r[P3]=func(r[P2@P5])"),
    /* 166 */ "Trace"            OpHelp(""),
    /* 167 */ "CursorHint"       OpHelp(""),
    /* 168 */ "Noop"             OpHelp(""),
    /* 169 */ "Explain"          OpHelp(""),
  };
  return azName[i];
}
#endif

/************** End of opcodes.c *********************************************/
/************** Begin file os_unix.c *****************************************/
................................................................................
#define osMmap ((void*(*)(void*,size_t,int,int,int,off_t))aSyscall[22].pCurrent)

#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0
  { "munmap",       (sqlite3_syscall_ptr)munmap,          0 },
#else
  { "munmap",       (sqlite3_syscall_ptr)0,               0 },
#endif
#define osMunmap ((int(*)(void*,size_t))aSyscall[23].pCurrent)

#if HAVE_MREMAP && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)
  { "mremap",       (sqlite3_syscall_ptr)mremap,          0 },
#else
  { "mremap",       (sqlite3_syscall_ptr)0,               0 },
#endif
#define osMremap ((void*(*)(void*,size_t,size_t,int,...))aSyscall[24].pCurrent)
................................................................................
#if defined(HAVE_LSTAT)
  { "lstat",         (sqlite3_syscall_ptr)lstat,          0 },
#else
  { "lstat",         (sqlite3_syscall_ptr)0,              0 },
#endif
#define osLstat      ((int(*)(const char*,struct stat*))aSyscall[27].pCurrent)

#if defined(__linux__) && defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE)
  { "ioctl",         (sqlite3_syscall_ptr)ioctl,          0 },
#else
  { "ioctl",         (sqlite3_syscall_ptr)0,              0 },
#endif
#define osIoctl ((int(*)(int,int,...))aSyscall[28].pCurrent)

}; /* End of the overrideable system calls */


/*
** On some systems, calls to fchown() will trigger a message in a security
................................................................................
  unixInodeInfo *pInode;     /* unixInodeInfo that owns this SHM node */
  sqlite3_mutex *mutex;      /* Mutex to access this object */
  char *zFilename;           /* Name of the mmapped file */
  int h;                     /* Open file descriptor */
  int szRegion;              /* Size of shared-memory regions */
  u16 nRegion;               /* Size of array apRegion */
  u8 isReadonly;             /* True if read-only */
  u8 isUnlocked;             /* True if no DMS lock held */
  char **apRegion;           /* Array of mapped shared-memory regions */
  int nRef;                  /* Number of unixShm objects pointing to this */
  unixShm *pFirst;           /* All unixShm objects pointing to this */
#ifdef SQLITE_DEBUG
  u8 exclMask;               /* Mask of exclusive locks held */
  u8 sharedMask;             /* Mask of shared locks held */
  u8 nextShmId;              /* Next available unixShm.id value */
................................................................................
){
  unixShmNode *pShmNode; /* Apply locks to this open shared-memory segment */
  struct flock f;        /* The posix advisory locking structure */
  int rc = SQLITE_OK;    /* Result code form fcntl() */

  /* Access to the unixShmNode object is serialized by the caller */
  pShmNode = pFile->pInode->pShmNode;
  assert( pShmNode->nRef==0 || sqlite3_mutex_held(pShmNode->mutex) );

  /* Shared locks never span more than one byte */
  assert( n==1 || lockType!=F_RDLCK );

  /* Locks are within range */
  assert( n>=1 && n<=SQLITE_SHM_NLOCK );

................................................................................
      robust_close(pFd, p->h, __LINE__);
      p->h = -1;
    }
    p->pInode->pShmNode = 0;
    sqlite3_free(p);
  }
}

/*
** The DMS lock has not yet been taken on shm file pShmNode. Attempt to
** take it now. Return SQLITE_OK if successful, or an SQLite error
** code otherwise.
**
** If the DMS cannot be locked because this is a readonly_shm=1 
** connection and no other process already holds a lock, return
** SQLITE_READONLY_CANTINIT and set pShmNode->isUnlocked=1.
*/
static int unixLockSharedMemory(unixFile *pDbFd, unixShmNode *pShmNode){
  struct flock lock;
  int rc = SQLITE_OK;

  /* Use F_GETLK to determine the locks other processes are holding
  ** on the DMS byte. If it indicates that another process is holding
  ** a SHARED lock, then this process may also take a SHARED lock
  ** and proceed with opening the *-shm file. 
  **
  ** Or, if no other process is holding any lock, then this process
  ** is the first to open it. In this case take an EXCLUSIVE lock on the
  ** DMS byte and truncate the *-shm file to zero bytes in size. Then
  ** downgrade to a SHARED lock on the DMS byte.
  **
  ** If another process is holding an EXCLUSIVE lock on the DMS byte,
  ** return SQLITE_BUSY to the caller (it will try again). An earlier
  ** version of this code attempted the SHARED lock at this point. But
  ** this introduced a subtle race condition: if the process holding
  ** EXCLUSIVE failed just before truncating the *-shm file, then this
  ** process might open and use the *-shm file without truncating it.
  ** And if the *-shm file has been corrupted by a power failure or
  ** system crash, the database itself may also become corrupt.  */
  lock.l_whence = SEEK_SET;
  lock.l_start = UNIX_SHM_DMS;
  lock.l_len = 1;
  lock.l_type = F_WRLCK;
  if( osFcntl(pShmNode->h, F_GETLK, &lock)!=0 ) {
    rc = SQLITE_IOERR_LOCK;
  }else if( lock.l_type==F_UNLCK ){
    if( pShmNode->isReadonly ){
      pShmNode->isUnlocked = 1;
      rc = SQLITE_READONLY_CANTINIT;
    }else{
      rc = unixShmSystemLock(pDbFd, F_WRLCK, UNIX_SHM_DMS, 1);
      if( rc==SQLITE_OK && robust_ftruncate(pShmNode->h, 0) ){
        rc = unixLogError(SQLITE_IOERR_SHMOPEN,"ftruncate",pShmNode->zFilename);
      }
    }
  }else if( lock.l_type==F_WRLCK ){
    rc = SQLITE_BUSY;
  }

  if( rc==SQLITE_OK ){
    assert( lock.l_type==F_UNLCK || lock.l_type==F_RDLCK );
    rc = unixShmSystemLock(pDbFd, F_RDLCK, UNIX_SHM_DMS, 1);
  }
  return rc;
}

/*
** Open a shared-memory area associated with open database file pDbFd.  
** This particular implementation uses mmapped files.
**
** The file used to implement shared-memory is in the same directory
** as the open database file and has the same name as the open database
................................................................................
** that no other processes are able to read or write the database.  In
** that case, we do not really need shared memory.  No shared memory
** file is created.  The shared memory will be simulated with heap memory.
*/
static int unixOpenSharedMemory(unixFile *pDbFd){
  struct unixShm *p = 0;          /* The connection to be opened */
  struct unixShmNode *pShmNode;   /* The underlying mmapped file */
  int rc = SQLITE_OK;             /* Result code */
  unixInodeInfo *pInode;          /* The inode of fd */
  char *zShm;             /* Name of the file used for SHM */
  int nShmFilename;               /* Size of the SHM filename in bytes */

  /* Allocate space for the new unixShm object. */
  p = sqlite3_malloc64( sizeof(*p) );
  if( p==0 ) return SQLITE_NOMEM_BKPT;
  memset(p, 0, sizeof(*p));
  assert( pDbFd->pShm==0 );
................................................................................
#endif
    pShmNode = sqlite3_malloc64( sizeof(*pShmNode) + nShmFilename );
    if( pShmNode==0 ){
      rc = SQLITE_NOMEM_BKPT;
      goto shm_open_err;
    }
    memset(pShmNode, 0, sizeof(*pShmNode)+nShmFilename);
    zShm = pShmNode->zFilename = (char*)&pShmNode[1];
#ifdef SQLITE_SHM_DIRECTORY
    sqlite3_snprintf(nShmFilename, zShm, 
                     SQLITE_SHM_DIRECTORY "/sqlite-shm-%x-%x",
                     (u32)sStat.st_ino, (u32)sStat.st_dev);
#else
    sqlite3_snprintf(nShmFilename, zShm, "%s-shm", zBasePath);
    sqlite3FileSuffix3(pDbFd->zPath, zShm);
#endif
    pShmNode->h = -1;
    pDbFd->pInode->pShmNode = pShmNode;
    pShmNode->pInode = pDbFd->pInode;
    if( sqlite3GlobalConfig.bCoreMutex ){
      pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
      if( pShmNode->mutex==0 ){
        rc = SQLITE_NOMEM_BKPT;
        goto shm_open_err;
      }
    }

    if( pInode->bProcessLock==0 ){

      if( 0==sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){


        pShmNode->h = robust_open(zShm, O_RDWR|O_CREAT, (sStat.st_mode&0777));
      }
      if( pShmNode->h<0 ){
        pShmNode->h = robust_open(zShm, O_RDONLY, (sStat.st_mode&0777));
        if( pShmNode->h<0 ){
          rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShm);
          goto shm_open_err;
        }
        pShmNode->isReadonly = 1;
      }

      /* If this process is running as root, make sure that the SHM file
      ** is owned by the same user that owns the original database.  Otherwise,
      ** the original owner will not be able to connect.
      */
      robustFchown(pShmNode->h, sStat.st_uid, sStat.st_gid);

      rc = unixLockSharedMemory(pDbFd, pShmNode);











      if( rc!=SQLITE_OK && rc!=SQLITE_READONLY_CANTINIT ) goto shm_open_err;
    }
  }

  /* Make the new connection a child of the unixShmNode */
  p->pShmNode = pShmNode;
#ifdef SQLITE_DEBUG
  p->id = pShmNode->nextShmId++;
................................................................................
  ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex 
  ** mutex.
  */
  sqlite3_mutex_enter(pShmNode->mutex);
  p->pNext = pShmNode->pFirst;
  pShmNode->pFirst = p;
  sqlite3_mutex_leave(pShmNode->mutex);
  return rc;

  /* Jump here on any error */
shm_open_err:
  unixShmPurge(pDbFd);       /* This call frees pShmNode if required */
  sqlite3_free(p);
  unixLeaveMutex();
  return rc;
................................................................................
    rc = unixOpenSharedMemory(pDbFd);
    if( rc!=SQLITE_OK ) return rc;
  }

  p = pDbFd->pShm;
  pShmNode = p->pShmNode;
  sqlite3_mutex_enter(pShmNode->mutex);
  if( pShmNode->isUnlocked ){
    rc = unixLockSharedMemory(pDbFd, pShmNode);
    if( rc!=SQLITE_OK ) goto shmpage_out;
    pShmNode->isUnlocked = 0;
  }
  assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 );
  assert( pShmNode->pInode==pDbFd->pInode );
  assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 );
  assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 );

  /* Minimum number of regions required to be mapped. */
  nReqRegion = ((iRegion+nShmPerMap) / nShmPerMap) * nShmPerMap;
................................................................................
  struct statfs fsInfo;
#endif

  /* If creating a master or main-file journal, this function will open
  ** a file-descriptor on the directory too. The first time unixSync()
  ** is called the directory file descriptor will be fsync()ed and close()d.
  */
  int isNewJrnl = (isCreate && (
        eType==SQLITE_OPEN_MASTER_JOURNAL 
     || eType==SQLITE_OPEN_MAIN_JOURNAL 
     || eType==SQLITE_OPEN_WAL
  ));

  /* If argument zPath is a NULL pointer, this function is required to open
  ** a temporary file. Use this buffer to store the file name in.
................................................................................
    /* Database filenames are double-zero terminated if they are not
    ** URIs with parameters.  Hence, they can always be passed into
    ** sqlite3_uri_parameter(). */
    assert( (flags & SQLITE_OPEN_URI) || zName[strlen(zName)+1]==0 );

  }else if( !zName ){
    /* If zName is NULL, the upper layer is requesting a temp file. */
    assert(isDelete && !isNewJrnl);
    rc = unixGetTempname(pVfs->mxPathname, zTmpname);
    if( rc!=SQLITE_OK ){
      return rc;
    }
    zName = zTmpname;

    /* Generated temporary filenames are always double-zero terminated
................................................................................
      assert( !p->pPreallocatedUnused );
      assert( eType==SQLITE_OPEN_WAL || eType==SQLITE_OPEN_MAIN_JOURNAL );
      return rc;
    }
    fd = robust_open(zName, openFlags, openMode);
    OSTRACE(("OPENX   %-3d %s 0%o\n", fd, zName, openFlags));
    assert( !isExclusive || (openFlags & O_CREAT)!=0 );
    if( fd<0 ){
      if( isNewJrnl && errno==EACCES && osAccess(zName, F_OK) ){
        /* If unable to create a journal because the directory is not
        ** writable, change the error code to indicate that. */
        rc = SQLITE_READONLY_DIRECTORY;
      }else if( errno!=EISDIR && isReadWrite ){
        /* Failed to open the file for read/write access. Try read-only. */
        flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
        openFlags &= ~(O_RDWR|O_CREAT);
        flags |= SQLITE_OPEN_READONLY;
        openFlags |= O_RDONLY;
        isReadonly = 1;
        fd = robust_open(zName, openFlags, openMode);
      }
    }
    if( fd<0 ){
      int rc2 = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zName);
      if( rc==SQLITE_OK ) rc = rc2;
      goto open_finished;
    }

    /* If this process is running as root and if creating a new rollback
    ** journal or WAL file, set the ownership of the journal or WAL to be
    ** the same as the original database.
    */
................................................................................
#endif

  /* Set up appropriate ctrlFlags */
  if( isDelete )                ctrlFlags |= UNIXFILE_DELETE;
  if( isReadonly )              ctrlFlags |= UNIXFILE_RDONLY;
  noLock = eType!=SQLITE_OPEN_MAIN_DB;
  if( noLock )                  ctrlFlags |= UNIXFILE_NOLOCK;
  if( isNewJrnl )               ctrlFlags |= UNIXFILE_DIRSYNC;
  if( flags & SQLITE_OPEN_URI ) ctrlFlags |= UNIXFILE_URI;

#if SQLITE_ENABLE_LOCKING_STYLE
#if SQLITE_PREFER_PROXY_LOCKING
  isAutoProxy = 1;
#endif
  if( isAutoProxy && (zPath!=NULL) && (!noLock) && pVfs->xOpen ){
................................................................................
struct winShmNode {
  sqlite3_mutex *mutex;      /* Mutex to access this object */
  char *zFilename;           /* Name of the file */
  winFile hFile;             /* File handle from winOpen */

  int szRegion;              /* Size of shared-memory regions */
  int nRegion;               /* Size of array apRegion */
  u8 isReadonly;             /* True if read-only */
  u8 isUnlocked;             /* True if no DMS lock held */

  struct ShmRegion {
    HANDLE hMap;             /* File handle from CreateFileMapping */
    void *pMap;
  } *aRegion;
  DWORD lastErrno;           /* The Windows errno from the last I/O error */

  int nRef;                  /* Number of winShm objects pointing to this */
................................................................................
  int lockType,         /* WINSHM_UNLCK, WINSHM_RDLCK, or WINSHM_WRLCK */
  int ofst,             /* Offset to first byte to be locked/unlocked */
  int nByte             /* Number of bytes to lock or unlock */
){
  int rc = 0;           /* Result code form Lock/UnlockFileEx() */

  /* Access to the winShmNode object is serialized by the caller */
  assert( pFile->nRef==0 || sqlite3_mutex_held(pFile->mutex) );

  OSTRACE(("SHM-LOCK file=%p, lock=%d, offset=%d, size=%d\n",
           pFile->hFile.h, lockType, ofst, nByte));

  /* Release/Acquire the system-level lock */
  if( lockType==WINSHM_UNLCK ){
    rc = winUnlockFile(&pFile->hFile.h, ofst, 0, nByte, 0);
................................................................................
      sqlite3_free(p->aRegion);
      sqlite3_free(p);
    }else{
      pp = &p->pNext;
    }
  }
}

/*
** The DMS lock has not yet been taken on shm file pShmNode. Attempt to
** take it now. Return SQLITE_OK if successful, or an SQLite error
** code otherwise.
**
** If the DMS cannot be locked because this is a readonly_shm=1
** connection and no other process already holds a lock, return
** SQLITE_READONLY_CANTINIT and set pShmNode->isUnlocked=1.
*/
static int winLockSharedMemory(winShmNode *pShmNode){
  int rc = winShmSystemLock(pShmNode, WINSHM_WRLCK, WIN_SHM_DMS, 1);

  if( rc==SQLITE_OK ){
    if( pShmNode->isReadonly ){
      pShmNode->isUnlocked = 1;
      winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1);
      return SQLITE_READONLY_CANTINIT;
    }else if( winTruncate((sqlite3_file*)&pShmNode->hFile, 0) ){
      winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1);
      return winLogError(SQLITE_IOERR_SHMOPEN, osGetLastError(),
                         "winLockSharedMemory", pShmNode->zFilename);
    }
  }

  if( rc==SQLITE_OK ){
    winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1);
  }

  return winShmSystemLock(pShmNode, WINSHM_RDLCK, WIN_SHM_DMS, 1);
}

/*
** Open the shared-memory area associated with database file pDbFd.
**
** When opening a new shared-memory file, if no other instances of that
** file are currently open, in this process or in other processes, then
** the file must be truncated to zero length or have its header cleared.
*/
static int winOpenSharedMemory(winFile *pDbFd){
  struct winShm *p;                  /* The connection to be opened */
  winShmNode *pShmNode = 0;          /* The underlying mmapped file */
  int rc = SQLITE_OK;                /* Result code */
  int rc2 = SQLITE_ERROR;            /* winOpen result code */
  winShmNode *pNew;                  /* Newly allocated winShmNode */
  int nName;                         /* Size of zName in bytes */

  assert( pDbFd->pShm==0 );    /* Not previously opened */

  /* Allocate space for the new sqlite3_shm object.  Also speculatively
  ** allocate space for a new winShmNode and filename.
  */
................................................................................
      pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
      if( pShmNode->mutex==0 ){
        rc = SQLITE_IOERR_NOMEM_BKPT;
        goto shm_open_err;
      }
    }

    if( 0==sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){
      rc2 = winOpen(pDbFd->pVfs,
                    pShmNode->zFilename,
                    (sqlite3_file*)&pShmNode->hFile,
                    SQLITE_OPEN_WAL|SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE,
                    0);
    }
    if( rc2!=SQLITE_OK ){
      rc2 = winOpen(pDbFd->pVfs,
                    pShmNode->zFilename,
                    (sqlite3_file*)&pShmNode->hFile,
                    SQLITE_OPEN_WAL|SQLITE_OPEN_READONLY,
                    0);
      if( rc2!=SQLITE_OK ){
        rc = winLogError(rc2, osGetLastError(), "winOpenShm",
                         pShmNode->zFilename);
        goto shm_open_err;
      }
      pShmNode->isReadonly = 1;
    }

    rc = winLockSharedMemory(pShmNode);
    if( rc!=SQLITE_OK && rc!=SQLITE_READONLY_CANTINIT ) goto shm_open_err;

  }

  /* Make the new connection a child of the winShmNode */
  p->pShmNode = pShmNode;
#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE)
  p->id = pShmNode->nextShmId++;
#endif
................................................................................
  ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex
  ** mutex.
  */
  sqlite3_mutex_enter(pShmNode->mutex);
  p->pNext = pShmNode->pFirst;
  pShmNode->pFirst = p;
  sqlite3_mutex_leave(pShmNode->mutex);
  return rc;

  /* Jump here on any error */
shm_open_err:
  winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1);
  winShmPurge(pDbFd->pVfs, 0);      /* This call frees pShmNode if required */
  sqlite3_free(p);
  sqlite3_free(pNew);
................................................................................
  int szRegion,                   /* Size of regions */
  int isWrite,                    /* True to extend file if necessary */
  void volatile **pp              /* OUT: Mapped memory */
){
  winFile *pDbFd = (winFile*)fd;
  winShm *pShm = pDbFd->pShm;
  winShmNode *pShmNode;
  DWORD protect = PAGE_READWRITE;
  DWORD flags = FILE_MAP_WRITE | FILE_MAP_READ;
  int rc = SQLITE_OK;

  if( !pShm ){
    rc = winOpenSharedMemory(pDbFd);
    if( rc!=SQLITE_OK ) return rc;
    pShm = pDbFd->pShm;
  }
  pShmNode = pShm->pShmNode;

  sqlite3_mutex_enter(pShmNode->mutex);
  if( pShmNode->isUnlocked ){
    rc = winLockSharedMemory(pShmNode);
    if( rc!=SQLITE_OK ) goto shmpage_out;
    pShmNode->isUnlocked = 0;
  }
  assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 );

  if( pShmNode->nRegion<=iRegion ){
    struct ShmRegion *apNew;           /* New aRegion[] array */
    int nByte = (iRegion+1)*szRegion;  /* Minimum required file size */
    sqlite3_int64 sz;                  /* Current size of wal-index file */

................................................................................
        pShmNode->aRegion, (iRegion+1)*sizeof(apNew[0])
    );
    if( !apNew ){
      rc = SQLITE_IOERR_NOMEM_BKPT;
      goto shmpage_out;
    }
    pShmNode->aRegion = apNew;

    if( pShmNode->isReadonly ){
      protect = PAGE_READONLY;
      flags = FILE_MAP_READ;
    }

    while( pShmNode->nRegion<=iRegion ){
      HANDLE hMap = NULL;         /* file-mapping handle */
      void *pMap = 0;             /* Mapped memory region */

#if SQLITE_OS_WINRT
      hMap = osCreateFileMappingFromApp(pShmNode->hFile.h,
          NULL, protect, nByte, NULL
      );
#elif defined(SQLITE_WIN32_HAS_WIDE)
      hMap = osCreateFileMappingW(pShmNode->hFile.h,
          NULL, protect, 0, nByte, NULL
      );
#elif defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_CREATEFILEMAPPINGA
      hMap = osCreateFileMappingA(pShmNode->hFile.h,
          NULL, protect, 0, nByte, NULL
      );
#endif
      OSTRACE(("SHM-MAP-CREATE pid=%lu, region=%d, size=%d, rc=%s\n",
               osGetCurrentProcessId(), pShmNode->nRegion, nByte,
               hMap ? "ok" : "failed"));
      if( hMap ){
        int iOffset = pShmNode->nRegion*szRegion;
        int iOffsetShift = iOffset % winSysInfo.dwAllocationGranularity;
#if SQLITE_OS_WINRT
        pMap = osMapViewOfFileFromApp(hMap, flags,
            iOffset - iOffsetShift, szRegion + iOffsetShift
        );
#else
        pMap = osMapViewOfFile(hMap, flags,
            0, iOffset - iOffsetShift, szRegion + iOffsetShift
        );
#endif
        OSTRACE(("SHM-MAP-MAP pid=%lu, region=%d, offset=%d, size=%d, rc=%s\n",
                 osGetCurrentProcessId(), pShmNode->nRegion, iOffset,
                 szRegion, pMap ? "ok" : "failed"));
      }
................................................................................
    int iOffset = iRegion*szRegion;
    int iOffsetShift = iOffset % winSysInfo.dwAllocationGranularity;
    char *p = (char *)pShmNode->aRegion[iRegion].pMap;
    *pp = (void *)&p[iOffsetShift];
  }else{
    *pp = 0;
  }
  if( pShmNode->isReadonly && rc==SQLITE_OK ) rc = SQLITE_READONLY;
  sqlite3_mutex_leave(pShmNode->mutex);
  return rc;
}

#else
# define winShmMap     0
# define winShmLock    0
................................................................................

/*
** Make sure the page is marked as clean. If it isn't clean already,
** make it so.
*/
SQLITE_PRIVATE void sqlite3PcacheMakeClean(PgHdr *p){
  assert( sqlite3PcachePageSanity(p) );
  assert( (p->flags & PGHDR_DIRTY)!=0 );
  assert( (p->flags & PGHDR_CLEAN)==0 );
  pcacheManageDirtyList(p, PCACHE_DIRTYLIST_REMOVE);
  p->flags &= ~(PGHDR_DIRTY|PGHDR_NEED_SYNC|PGHDR_WRITEABLE);
  p->flags |= PGHDR_CLEAN;
  pcacheTrace(("%p.CLEAN %d\n",p->pCache,p->pgno));
  assert( sqlite3PcachePageSanity(p) );
  if( p->nRef==0 ){
    pcacheUnpin(p);

  }
}

/*
** Make every page in the cache clean.
*/
SQLITE_PRIVATE void sqlite3PcacheCleanAll(PCache *pCache){
................................................................................
    );
    if( rc==SQLITE_OK && pData ){
      if( pPager->eState>PAGER_READER || pPager->tempFile ){
        pPg = sqlite3PagerLookup(pPager, pgno);
      }
      if( pPg==0 ){
        rc = pagerAcquireMapPage(pPager, pgno, pData, &pPg);
      }else{
        sqlite3OsUnfetch(pPager->fd, (i64)(pgno-1)*pPager->pageSize, pData);
      }
      if( pPg ){
        assert( rc==SQLITE_OK );
        *ppPage = pPg;
        return SQLITE_OK;
      }
................................................................................
** WAL-INDEX FORMAT
**
** Conceptually, the wal-index is shared memory, though VFS implementations
** might choose to implement the wal-index using a mmapped file.  Because
** the wal-index is shared memory, SQLite does not support journal_mode=WAL 
** on a network filesystem.  All users of the database must be able to
** share memory.
**
** In the default unix and windows implementation, the wal-index is a mmapped
** file whose name is the database name with a "-shm" suffix added.  For that
** reason, the wal-index is sometimes called the "shm" file.
**
** The wal-index is transient.  After a crash, the wal-index can (and should
** be) reconstructed from the original WAL file.  In fact, the VFS is required
** to either truncate or zero the header of the wal-index when the last
** connection to it closes.  Because the wal-index is transient, it can
** use an architecture-specific format; it does not have to be cross-platform.
** Hence, unlike the database and WAL file formats which store all values
................................................................................
** WALINDEX_MAX_VERSION, then no read-transaction is opened and SQLite
** returns SQLITE_CANTOPEN.
*/
#define WAL_MAX_VERSION      3007000
#define WALINDEX_MAX_VERSION 3007000

/*
** Index numbers for various locking bytes.   WAL_NREADER is the number
** of available reader locks and should be at least 3.  The default
** is SQLITE_SHM_NLOCK==8 and  WAL_NREADER==5.
**
** Technically, the various VFSes are free to implement these locks however
** they see fit.  However, compatibility is encouraged so that VFSes can
** interoperate.  The standard implemention used on both unix and windows
** is for the index number to indicate a byte offset into the
** WalCkptInfo.aLock[] array in the wal-index header.  In other words, all
** locks are on the shm file.  The WALINDEX_LOCK_OFFSET constant (which
** should be 120) is the location in the shm file for the first locking
** byte.
*/
#define WAL_WRITE_LOCK         0
#define WAL_ALL_BUT_WRITE      1
#define WAL_CKPT_LOCK          1
#define WAL_RECOVER_LOCK       2
#define WAL_READ_LOCK(I)       (3+(I))
#define WAL_NREADER            (SQLITE_SHM_NLOCK-3)
................................................................................
#define WALINDEX_LOCK_OFFSET (sizeof(WalIndexHdr)*2+offsetof(WalCkptInfo,aLock))
#define WALINDEX_HDR_SIZE    (sizeof(WalIndexHdr)*2+sizeof(WalCkptInfo))

/* Size of header before each frame in wal */
#define WAL_FRAME_HDRSIZE 24

/* Size of write ahead log header, including checksum. */

#define WAL_HDRSIZE 32

/* WAL magic value. Either this value, or the same value with the least
** significant bit also set (WAL_MAGIC | 0x00000001) is stored in 32-bit
** big-endian format in the first 4 bytes of a WAL file.
**
** If the LSB is set, then the checksums for each frame within the WAL
................................................................................
  u8 exclusiveMode;          /* Non-zero if connection is in exclusive mode */
  u8 writeLock;              /* True if in a write transaction */
  u8 ckptLock;               /* True if holding a checkpoint lock */
  u8 readOnly;               /* WAL_RDWR, WAL_RDONLY, or WAL_SHM_RDONLY */
  u8 truncateOnCommit;       /* True to truncate WAL file on commit */
  u8 syncHeader;             /* Fsync the WAL header if true */
  u8 padToSectorBoundary;    /* Pad transactions out to the next sector */
  u8 bShmUnreliable;         /* SHM content is read-only and unreliable */
  WalIndexHdr hdr;           /* Wal-index header for current transaction */
  u32 minFrame;              /* Ignore wal frames before this one */
  u32 iReCksum;              /* On commit, recalculate checksums from here */
  const char *zWalName;      /* Name of WAL file */
  u32 nCkpt;                 /* Checkpoint sequence counter in the wal-header */
#ifdef SQLITE_DEBUG
  u8 lockError;              /* True if a locking error has occurred */
................................................................................
    sizeof(ht_slot)*HASHTABLE_NSLOT + HASHTABLE_NPAGE*sizeof(u32) \
)

/*
** Obtain a pointer to the iPage'th page of the wal-index. The wal-index
** is broken into pages of WALINDEX_PGSZ bytes. Wal-index pages are
** numbered from zero.
**
** If the wal-index is currently smaller the iPage pages then the size
** of the wal-index might be increased, but only if it is safe to do
** so.  It is safe to enlarge the wal-index if pWal->writeLock is true
** or pWal->exclusiveMode==WAL_HEAPMEMORY_MODE.
**
** If this call is successful, *ppPage is set to point to the wal-index
** page and SQLITE_OK is returned. If an error (an OOM or VFS error) occurs,
** then an SQLite error code is returned and *ppPage is set to 0.
*/
static int walIndexPage(Wal *pWal, int iPage, volatile u32 **ppPage){
  int rc = SQLITE_OK;
................................................................................
    if( pWal->exclusiveMode==WAL_HEAPMEMORY_MODE ){
      pWal->apWiData[iPage] = (u32 volatile *)sqlite3MallocZero(WALINDEX_PGSZ);
      if( !pWal->apWiData[iPage] ) rc = SQLITE_NOMEM_BKPT;
    }else{
      rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ, 
          pWal->writeLock, (void volatile **)&pWal->apWiData[iPage]
      );
      assert( pWal->apWiData[iPage]!=0 || rc!=SQLITE_OK || pWal->writeLock==0 );
      testcase( pWal->apWiData[iPage]==0 && rc==SQLITE_OK );
      if( (rc&0xff)==SQLITE_READONLY ){
        pWal->readOnly |= WAL_SHM_RDONLY;
        if( rc==SQLITE_READONLY ){
          rc = SQLITE_OK;
        }
      }
    }
  }

  *ppPage = pWal->apWiData[iPage];
  assert( iPage==0 || *ppPage || rc!=SQLITE_OK );
  return rc;
................................................................................
** the necessary locks, this routine returns SQLITE_BUSY.
*/
static int walIndexRecover(Wal *pWal){
  int rc;                         /* Return Code */
  i64 nSize;                      /* Size of log file */
  u32 aFrameCksum[2] = {0, 0};
  int iLock;                      /* Lock offset to lock for checkpoint */


  /* Obtain an exclusive lock on all byte in the locking range not already
  ** locked by the caller. The caller is guaranteed to have locked the
  ** WAL_WRITE_LOCK byte, and may have also locked the WAL_CKPT_LOCK byte.
  ** If successful, the same bytes that are locked here are unlocked before
  ** this function returns.
  */
  assert( pWal->ckptLock==1 || pWal->ckptLock==0 );
  assert( WAL_ALL_BUT_WRITE==WAL_WRITE_LOCK+1 );
  assert( WAL_CKPT_LOCK==WAL_ALL_BUT_WRITE );
  assert( pWal->writeLock );
  iLock = WAL_ALL_BUT_WRITE + pWal->ckptLock;

  rc = walLockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock);
  if( rc==SQLITE_OK ){
    rc = walLockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
    if( rc!=SQLITE_OK ){
      walUnlockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock);
    }
  }
  if( rc ){
    return rc;
  }

  WALTRACE(("WAL%p: recovery begin...\n", pWal));

  memset(&pWal->hdr, 0, sizeof(WalIndexHdr));

  rc = sqlite3OsFileSize(pWal->pWalFd, &nSize);
  if( rc!=SQLITE_OK ){
    goto recovery_error;
................................................................................
          pWal->hdr.mxFrame, pWal->zWalName
      );
    }
  }

recovery_error:
  WALTRACE(("WAL%p: recovery %s\n", pWal, rc ? "failed" : "ok"));
  walUnlockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock);
  walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
  return rc;
}

/*
** Close an open wal-index.
*/
static void walIndexClose(Wal *pWal, int isDelete){
  if( pWal->exclusiveMode==WAL_HEAPMEMORY_MODE || pWal->bShmUnreliable ){
    int i;
    for(i=0; i<pWal->nWiData; i++){
      sqlite3_free((void *)pWal->apWiData[i]);
      pWal->apWiData[i] = 0;
    }
  }
  if( pWal->exclusiveMode!=WAL_HEAPMEMORY_MODE ){
    sqlite3OsShmUnmap(pWal->pDbFd, isDelete);
  }
}

/* 
** Open a connection to the WAL file zWalName. The database file must 
** already be opened on connection pDbFd. The buffer that zWalName points
................................................................................
    testcase( pWal->szPage>=65536 );
  }

  /* The header was successfully read. Return zero. */
  return 0;
}

/*
** This is the value that walTryBeginRead returns when it needs to
** be retried.
*/
#define WAL_RETRY  (-1)

/*
** Read the wal-index header from the wal-index and into pWal->hdr.
** If the wal-header appears to be corrupt, try to reconstruct the
** wal-index from the WAL before returning.
**
** Set *pChanged to 1 if the wal-index header value in pWal->hdr is
** changed by this operation.  If pWal->hdr is unchanged, set *pChanged
................................................................................

  /* Ensure that page 0 of the wal-index (the page that contains the 
  ** wal-index header) is mapped. Return early if an error occurs here.
  */
  assert( pChanged );
  rc = walIndexPage(pWal, 0, &page0);
  if( rc!=SQLITE_OK ){
    assert( rc!=SQLITE_READONLY ); /* READONLY changed to OK in walIndexPage */

    if( rc==SQLITE_READONLY_CANTINIT ){
      /* The SQLITE_READONLY_CANTINIT return means that the shared-memory
      ** was openable but is not writable, and this thread is unable to
      ** confirm that another write-capable connection has the shared-memory
      ** open, and hence the content of the shared-memory is unreliable,
      ** since the shared-memory might be inconsistent with the WAL file
      ** and there is no writer on hand to fix it. */
      assert( page0==0 );
      assert( pWal->writeLock==0 );
      assert( pWal->readOnly & WAL_SHM_RDONLY );
      pWal->bShmUnreliable = 1;
      pWal->exclusiveMode = WAL_HEAPMEMORY_MODE;
      *pChanged = 1;
    }else{
      return rc; /* Any other non-OK return is just an error */
    }
  }else{
    /* page0 can be NULL if the SHM is zero bytes in size and pWal->writeLock
    ** is zero, which prevents the SHM from growing */
    testcase( page0!=0 );
  }
  assert( page0!=0 || pWal->writeLock==0 );

  /* If the first page of the wal-index has been mapped, try to read the
  ** wal-index header immediately, without holding any lock. This usually
  ** works, but may fail if the wal-index header is corrupt or currently 
  ** being modified by another thread or process.
  */
  badHdr = (page0 ? walIndexTryHdr(pWal, pChanged) : 1);

  /* If the first attempt failed, it might have been due to a race
  ** with a writer.  So get a WRITE lock and try again.
  */
  assert( badHdr==0 || pWal->writeLock==0 );
  if( badHdr ){
    if( pWal->bShmUnreliable==0 && (pWal->readOnly & WAL_SHM_RDONLY) ){
      if( SQLITE_OK==(rc = walLockShared(pWal, WAL_WRITE_LOCK)) ){
        walUnlockShared(pWal, WAL_WRITE_LOCK);
        rc = SQLITE_READONLY_RECOVERY;
      }
    }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){
      pWal->writeLock = 1;
      if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
................................................................................
  /* If the header is read successfully, check the version number to make
  ** sure the wal-index was not constructed with some future format that
  ** this version of SQLite cannot understand.
  */
  if( badHdr==0 && pWal->hdr.iVersion!=WALINDEX_MAX_VERSION ){
    rc = SQLITE_CANTOPEN_BKPT;
  }
  if( pWal->bShmUnreliable ){
    if( rc!=SQLITE_OK ){
      walIndexClose(pWal, 0);
      pWal->bShmUnreliable = 0;
      assert( pWal->nWiData>0 && pWal->apWiData[0]==0 );
      /* walIndexRecover() might have returned SHORT_READ if a concurrent
      ** writer truncated the WAL out from under it.  If that happens, it
      ** indicates that a writer has fixed the SHM file for us, so retry */
      if( rc==SQLITE_IOERR_SHORT_READ ) rc = WAL_RETRY;
    }
    pWal->exclusiveMode = WAL_NORMAL_MODE;
  }

  return rc;
}

/*


** Open a transaction in a connection where the shared-memory is read-only
** and where we cannot verify that there is a separate write-capable connection
** on hand to keep the shared-memory up-to-date with the WAL file.
**
** This can happen, for example, when the shared-memory is implemented by
** memory-mapping a *-shm file, where a prior writer has shut down and
** left the *-shm file on disk, and now the present connection is trying
** to use that database but lacks write permission on the *-shm file.
** Other scenarios are also possible, depending on the VFS implementation.
**
** Precondition:
**
**    The *-wal file has been read and an appropriate wal-index has been
**    constructed in pWal->apWiData[] using heap memory instead of shared
**    memory. 
**
** If this function returns SQLITE_OK, then the read transaction has
** been successfully opened. In this case output variable (*pChanged) 
** is set to true before returning if the caller should discard the
** contents of the page cache before proceeding. Or, if it returns 
** WAL_RETRY, then the heap memory wal-index has been discarded and 
** the caller should retry opening the read transaction from the 
** beginning (including attempting to map the *-shm file). 
**
** If an error occurs, an SQLite error code is returned.
*/
static int walBeginShmUnreliable(Wal *pWal, int *pChanged){
  i64 szWal;                      /* Size of wal file on disk in bytes */
  i64 iOffset;                    /* Current offset when reading wal file */
  u8 aBuf[WAL_HDRSIZE];           /* Buffer to load WAL header into */
  u8 *aFrame = 0;                 /* Malloc'd buffer to load entire frame */
  int szFrame;                    /* Number of bytes in buffer aFrame[] */
  u8 *aData;                      /* Pointer to data part of aFrame buffer */
  volatile void *pDummy;          /* Dummy argument for xShmMap */
  int rc;                         /* Return code */
  u32 aSaveCksum[2];              /* Saved copy of pWal->hdr.aFrameCksum */

  assert( pWal->bShmUnreliable );
  assert( pWal->readOnly & WAL_SHM_RDONLY );
  assert( pWal->nWiData>0 && pWal->apWiData[0] );

  /* Take WAL_READ_LOCK(0). This has the effect of preventing any
  ** writers from running a checkpoint, but does not stop them
  ** from running recovery.  */
  rc = walLockShared(pWal, WAL_READ_LOCK(0));
  if( rc!=SQLITE_OK ){
    if( rc==SQLITE_BUSY ) rc = WAL_RETRY;
    goto begin_unreliable_shm_out;
  }
  pWal->readLock = 0;

  /* Check to see if a separate writer has attached to the shared-memory area,
  ** thus making the shared-memory "reliable" again.  Do this by invoking
  ** the xShmMap() routine of the VFS and looking to see if the return
  ** is SQLITE_READONLY instead of SQLITE_READONLY_CANTINIT.
  **
  ** If the shared-memory is now "reliable" return WAL_RETRY, which will
  ** cause the heap-memory WAL-index to be discarded and the actual
  ** shared memory to be used in its place.
  **
  ** This step is important because, even though this connection is holding
  ** the WAL_READ_LOCK(0) which prevents a checkpoint, a writer might
  ** have already checkpointed the WAL file and, while the current
  ** is active, wrap the WAL and start overwriting frames that this
  ** process wants to use.
  **
  ** Once sqlite3OsShmMap() has been called for an sqlite3_file and has
  ** returned any SQLITE_READONLY value, it must return only SQLITE_READONLY
  ** or SQLITE_READONLY_CANTINIT or some error for all subsequent invocations,
  ** even if some external agent does a "chmod" to make the shared-memory
  ** writable by us, until sqlite3OsShmUnmap() has been called.
  ** This is a requirement on the VFS implementation.
   */
  rc = sqlite3OsShmMap(pWal->pDbFd, 0, WALINDEX_PGSZ, 0, &pDummy);
  assert( rc!=SQLITE_OK ); /* SQLITE_OK not possible for read-only connection */
  if( rc!=SQLITE_READONLY_CANTINIT ){
    rc = (rc==SQLITE_READONLY ? WAL_RETRY : rc);
    goto begin_unreliable_shm_out;
  }

  /* We reach this point only if the real shared-memory is still unreliable.
  ** Assume the in-memory WAL-index substitute is correct and load it
  ** into pWal->hdr.
  */
  memcpy(&pWal->hdr, (void*)walIndexHdr(pWal), sizeof(WalIndexHdr));

  /* Make sure some writer hasn't come in and changed the WAL file out
  ** from under us, then disconnected, while we were not looking.
  */
  rc = sqlite3OsFileSize(pWal->pWalFd, &szWal);
  if( rc!=SQLITE_OK ){
    goto begin_unreliable_shm_out;
  }
  if( szWal<WAL_HDRSIZE ){
    /* If the wal file is too small to contain a wal-header and the
    ** wal-index header has mxFrame==0, then it must be safe to proceed
    ** reading the database file only. However, the page cache cannot
    ** be trusted, as a read/write connection may have connected, written
    ** the db, run a checkpoint, truncated the wal file and disconnected
    ** since this client's last read transaction.  */
    *pChanged = 1;
    rc = (pWal->hdr.mxFrame==0 ? SQLITE_OK : WAL_RETRY);
    goto begin_unreliable_shm_out;
  }

  /* Check the salt keys at the start of the wal file still match. */
  rc = sqlite3OsRead(pWal->pWalFd, aBuf, WAL_HDRSIZE, 0);
  if( rc!=SQLITE_OK ){
    goto begin_unreliable_shm_out;
  }
  if( memcmp(&pWal->hdr.aSalt, &aBuf[16], 8) ){
    /* Some writer has wrapped the WAL file while we were not looking.
    ** Return WAL_RETRY which will cause the in-memory WAL-index to be
    ** rebuilt. */
    rc = WAL_RETRY;
    goto begin_unreliable_shm_out;
  }

  /* Allocate a buffer to read frames into */
  szFrame = pWal->hdr.szPage + WAL_FRAME_HDRSIZE;
  aFrame = (u8 *)sqlite3_malloc64(szFrame);
  if( aFrame==0 ){
    rc = SQLITE_NOMEM_BKPT;
    goto begin_unreliable_shm_out;
  }
  aData = &aFrame[WAL_FRAME_HDRSIZE];

  /* Check to see if a complete transaction has been appended to the
  ** wal file since the heap-memory wal-index was created. If so, the
  ** heap-memory wal-index is discarded and WAL_RETRY returned to
  ** the caller.  */
  aSaveCksum[0] = pWal->hdr.aFrameCksum[0];
  aSaveCksum[1] = pWal->hdr.aFrameCksum[1];
  for(iOffset=walFrameOffset(pWal->hdr.mxFrame+1, pWal->hdr.szPage); 
      iOffset+szFrame<=szWal; 
      iOffset+=szFrame
  ){
    u32 pgno;                   /* Database page number for frame */
    u32 nTruncate;              /* dbsize field from frame header */

    /* Read and decode the next log frame. */
    rc = sqlite3OsRead(pWal->pWalFd, aFrame, szFrame, iOffset);
    if( rc!=SQLITE_OK ) break;
    if( !walDecodeFrame(pWal, &pgno, &nTruncate, aData, aFrame) ) break;

    /* If nTruncate is non-zero, then a complete transaction has been
    ** appended to this wal file. Set rc to WAL_RETRY and break out of
    ** the loop.  */
    if( nTruncate ){
      rc = WAL_RETRY;
      break;
    }
  }
  pWal->hdr.aFrameCksum[0] = aSaveCksum[0];
  pWal->hdr.aFrameCksum[1] = aSaveCksum[1];

 begin_unreliable_shm_out:
  sqlite3_free(aFrame);
  if( rc!=SQLITE_OK ){
    int i;
    for(i=0; i<pWal->nWiData; i++){
      sqlite3_free((void*)pWal->apWiData[i]);
      pWal->apWiData[i] = 0;
    }
    pWal->bShmUnreliable = 0;
    sqlite3WalEndReadTransaction(pWal);
    *pChanged = 1;
  }
  return rc;
}

/*
** Attempt to start a read transaction.  This might fail due to a race or
** other transient condition.  When that happens, it returns WAL_RETRY to
** indicate to the caller that it is safe to retry immediately.
**
** On success return SQLITE_OK.  On a permanent failure (such an
................................................................................
** recovery) return a positive error code.
**
** The useWal parameter is true to force the use of the WAL and disable
** the case where the WAL is bypassed because it has been completely
** checkpointed.  If useWal==0 then this routine calls walIndexReadHdr() 
** to make a copy of the wal-index header into pWal->hdr.  If the 
** wal-index header has changed, *pChanged is set to 1 (as an indication 
** to the caller that the local page cache is obsolete and needs to be 
** flushed.)  When useWal==1, the wal-index header is assumed to already
** be loaded and the pChanged parameter is unused.
**
** The caller must set the cnt parameter to the number of prior calls to
** this routine during the current read attempt that returned WAL_RETRY.
** This routine will start taking more aggressive measures to clear the
** race conditions after multiple WAL_RETRY returns, and after an excessive
................................................................................
  int mxI;                        /* Index of largest aReadMark[] value */
  int i;                          /* Loop counter */
  int rc = SQLITE_OK;             /* Return code  */
  u32 mxFrame;                    /* Wal frame to lock to */

  assert( pWal->readLock<0 );     /* Not currently locked */

  /* useWal may only be set for read/write connections */
  assert( (pWal->readOnly & WAL_SHM_RDONLY)==0 || useWal==0 );

  /* Take steps to avoid spinning forever if there is a protocol error.
  **
  ** Circumstances that cause a RETRY should only last for the briefest
  ** instances of time.  No I/O or other system calls are done while the
  ** locks are held, so the locks should not be held for very long. But 
  ** if we are unlucky, another process that is holding a lock might get
  ** paged out or take a page-fault that is time-consuming to resolve, 
................................................................................
      return SQLITE_PROTOCOL;
    }
    if( cnt>=10 ) nDelay = (cnt-9)*(cnt-9)*39;
    sqlite3OsSleep(pWal->pVfs, nDelay);
  }

  if( !useWal ){
    assert( rc==SQLITE_OK );
    if( pWal->bShmUnreliable==0 ){
      rc = walIndexReadHdr(pWal, pChanged);
    }
    if( rc==SQLITE_BUSY ){
      /* If there is not a recovery running in another thread or process
      ** then convert BUSY errors to WAL_RETRY.  If recovery is known to
      ** be running, convert BUSY to BUSY_RECOVERY.  There is a race here
      ** which might cause WAL_RETRY to be returned even if BUSY_RECOVERY
      ** would be technically correct.  But the race is benign since with
      ** WAL_RETRY this routine will be called again and will probably be
................................................................................
      }else if( rc==SQLITE_BUSY ){
        rc = SQLITE_BUSY_RECOVERY;
      }
    }
    if( rc!=SQLITE_OK ){
      return rc;
    }
    else if( pWal->bShmUnreliable ){
      return walBeginShmUnreliable(pWal, pChanged);
    }
  }

  assert( pWal->nWiData>0 );
  assert( pWal->apWiData[0]!=0 );
  pInfo = walCkptInfo(pWal);
  if( !useWal && pInfo->nBackfill==pWal->hdr.mxFrame
#ifdef SQLITE_ENABLE_SNAPSHOT
   && (pWal->pSnapshot==0 || pWal->hdr.mxFrame==0)

#endif
  ){
    /* The WAL has been completely backfilled (or it is empty).
    ** and can be safely ignored.
    */
    rc = walLockShared(pWal, WAL_READ_LOCK(0));
    walShmBarrier(pWal);
................................................................................
      }else if( rc!=SQLITE_BUSY ){
        return rc;
      }
    }
  }
  if( mxI==0 ){
    assert( rc==SQLITE_BUSY || (pWal->readOnly & WAL_SHM_RDONLY)!=0 );
    return rc==SQLITE_BUSY ? WAL_RETRY : SQLITE_READONLY_CANTINIT;
  }

  rc = walLockShared(pWal, WAL_READ_LOCK(mxI));
  if( rc ){
    return rc==SQLITE_BUSY ? WAL_RETRY : rc;
  }
  /* Now that the read-lock has been obtained, check that neither the
................................................................................

  /* If the "last page" field of the wal-index header snapshot is 0, then
  ** no data will be read from the wal under any circumstances. Return early
  ** in this case as an optimization.  Likewise, if pWal->readLock==0, 
  ** then the WAL is ignored by the reader so return early, as if the 
  ** WAL were empty.
  */
  if( iLast==0 || (pWal->readLock==0 && pWal->bShmUnreliable==0) ){
    *piRead = 0;
    return SQLITE_OK;
  }

  /* Search the hash table or tables for an entry matching page number
  ** pgno. Each iteration of the following for() loop searches one
  ** hash table (each hash table indexes up to HASHTABLE_NPAGE frames).
................................................................................
#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT
  /* If expensive assert() statements are available, do a linear search
  ** of the wal-index file content. Make sure the results agree with the
  ** result obtained using the hash indexes above.  */
  {
    u32 iRead2 = 0;
    u32 iTest;
    assert( pWal->bShmUnreliable || pWal->minFrame>0 );
    for(iTest=iLast; iTest>=pWal->minFrame && iTest>0; iTest--){
      if( walFramePgno(pWal, iTest)==pgno ){
        iRead2 = iTest;
        break;
      }
    }
    assert( iRead==iRead2 );
  }
................................................................................
  ** locks are taken in this case). Nor should the pager attempt to
  ** upgrade to exclusive-mode following such an error.
  */
  assert( pWal->readLock>=0 || pWal->lockError );
  assert( pWal->readLock>=0 || (op<=0 && pWal->exclusiveMode==0) );

  if( op==0 ){
    if( pWal->exclusiveMode!=WAL_NORMAL_MODE ){
      pWal->exclusiveMode = WAL_NORMAL_MODE;
      if( walLockShared(pWal, WAL_READ_LOCK(pWal->readLock))!=SQLITE_OK ){
        pWal->exclusiveMode = WAL_EXCLUSIVE_MODE;
      }
      rc = pWal->exclusiveMode==WAL_NORMAL_MODE;
    }else{
      /* Already in locking_mode=NORMAL */
      rc = 0;
    }
  }else if( op>0 ){
    assert( pWal->exclusiveMode==WAL_NORMAL_MODE );
    assert( pWal->readLock>=0 );
    walUnlockShared(pWal, WAL_READ_LOCK(pWal->readLock));
    pWal->exclusiveMode = WAL_EXCLUSIVE_MODE;
    rc = 1;
  }else{
    rc = pWal->exclusiveMode==WAL_NORMAL_MODE;
  }
  return rc;
}

/* 
** Return true if the argument is non-NULL and the WAL module is using
** heap-memory for the wal-index. Otherwise, if the argument is NULL or the
................................................................................
  #define setSharedCacheTableLock(a,b,c) SQLITE_OK
  #define clearAllSharedCacheTableLocks(a)
  #define downgradeAllSharedCacheTableLocks(a)
  #define hasSharedCacheTableLock(a,b,c,d) 1
  #define hasReadConflicts(a, b) 0
#endif

/*
** Implementation of the SQLITE_CORRUPT_PAGE() macro. Takes a single
** (MemPage*) as an argument. The (MemPage*) must not be NULL.
**
** If SQLITE_DEBUG is not defined, then this macro is equivalent to
** SQLITE_CORRUPT_BKPT. Or, if SQLITE_DEBUG is set, then the log message
** normally produced as a side-effect of SQLITE_CORRUPT_BKPT is augmented
** with the page number and filename associated with the (MemPage*).
*/
#ifdef SQLITE_DEBUG
int corruptPageError(int lineno, MemPage *p){
  char *zMsg = sqlite3_mprintf("database corruption page %d of %s",
      (int)p->pgno, sqlite3PagerFilename(p->pBt->pPager, 0)
  );
  if( zMsg ){
    sqlite3ReportError(SQLITE_CORRUPT, lineno, zMsg);
  }
  sqlite3_free(zMsg);
  return SQLITE_CORRUPT_BKPT;
}
# define SQLITE_CORRUPT_PAGE(pMemPage) corruptPageError(__LINE__, pMemPage)
#else
# define SQLITE_CORRUPT_PAGE(pMemPage) SQLITE_CORRUPT_PGNO(pMemPage->pgno)
#endif

#ifndef SQLITE_OMIT_SHARED_CACHE

#ifdef SQLITE_DEBUG
/*
**** This function is only used as part of an assert() statement. ***
**
** Check to see if pBtree holds the required locks to read or write to the 
................................................................................
      if( 0==iFree2 || (data[iFree2]==0 && data[iFree2+1]==0) ){
        u8 *pEnd = &data[cellOffset + nCell*2];
        u8 *pAddr;
        int sz2 = 0;
        int sz = get2byte(&data[iFree+2]);
        int top = get2byte(&data[hdr+5]);
        if( top>=iFree ){
          return SQLITE_CORRUPT_PAGE(pPage);
        }
        if( iFree2 ){
          assert( iFree+sz<=iFree2 ); /* Verified by pageFindSlot() */
          sz2 = get2byte(&data[iFree2+2]);
          assert( iFree+sz+sz2+iFree2-(iFree+sz) <= usableSize );
          memmove(&data[iFree+sz+sz2], &data[iFree+sz], iFree2-(iFree+sz));
          sz += sz2;
................................................................................
    pc = get2byte(pAddr);
    testcase( pc==iCellFirst );
    testcase( pc==iCellLast );
    /* These conditions have already been verified in btreeInitPage()
    ** if PRAGMA cell_size_check=ON.
    */
    if( pc<iCellFirst || pc>iCellLast ){
      return SQLITE_CORRUPT_PAGE(pPage);
    }
    assert( pc>=iCellFirst && pc<=iCellLast );
    size = pPage->xCellSize(pPage, &src[pc]);
    cbrk -= size;
    if( cbrk<iCellFirst || pc+size>usableSize ){
      return SQLITE_CORRUPT_PAGE(pPage);
    }
    assert( cbrk+size<=usableSize && cbrk>=iCellFirst );
    testcase( cbrk+size==usableSize );
    testcase( pc+size==usableSize );
    put2byte(pAddr, cbrk);
    if( temp==0 ){
      int x;
................................................................................
    }
    memcpy(&data[cbrk], &src[pc], size);
  }
  data[hdr+7] = 0;

 defragment_out:
  if( data[hdr+7]+cbrk-iCellFirst!=pPage->nFree ){
    return SQLITE_CORRUPT_PAGE(pPage);
  }
  assert( cbrk>=iCellFirst );
  put2byte(&data[hdr+5], cbrk);
  data[hdr+1] = 0;
  data[hdr+2] = 0;
  memset(&data[iCellFirst], 0, cbrk-iCellFirst);
  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
................................................................................
    ** freeblock form a big-endian integer which is the size of the freeblock
    ** in bytes, including the 4-byte header. */
    size = get2byte(&aData[pc+2]);
    if( (x = size - nByte)>=0 ){
      testcase( x==4 );
      testcase( x==3 );
      if( size+pc > usableSize ){
        *pRc = SQLITE_CORRUPT_PAGE(pPg);
        return 0;
      }else if( x<4 ){
        /* EVIDENCE-OF: R-11498-58022 In a well-formed b-tree page, the total
        ** number of bytes in fragments may not exceed 60. */
        if( aData[hdr+7]>57 ) return 0;

        /* Remove the slot from the free-list. Update the number of
................................................................................
      return &aData[pc + x];
    }
    iAddr = pc;
    pc = get2byte(&aData[pc]);
    if( pc<iAddr+size ) break;
  }
  if( pc ){
    *pRc = SQLITE_CORRUPT_PAGE(pPg);
  }

  return 0;
}

/*
** Allocate nByte bytes of space from within the B-Tree page passed
................................................................................
  ** integer, so a value of 0 is used in its place. */
  top = get2byte(&data[hdr+5]);
  assert( top<=(int)pPage->pBt->usableSize ); /* Prevent by getAndInitPage() */
  if( gap>top ){
    if( top==0 && pPage->pBt->usableSize==65536 ){
      top = 65536;
    }else{
      return SQLITE_CORRUPT_PAGE(pPage);
    }
  }

  /* If there is enough space between gap and top for one more cell pointer
  ** array entry offset, and if the freelist is not empty, then search the
  ** freelist looking for a free slot big enough to satisfy the request.
  */
................................................................................
  iPtr = hdr + 1;
  if( data[iPtr+1]==0 && data[iPtr]==0 ){
    iFreeBlk = 0;  /* Shortcut for the case when the freelist is empty */
  }else{
    while( (iFreeBlk = get2byte(&data[iPtr]))<iStart ){
      if( iFreeBlk<iPtr+4 ){
        if( iFreeBlk==0 ) break;
        return SQLITE_CORRUPT_PAGE(pPage);
      }
      iPtr = iFreeBlk;
    }
    if( iFreeBlk>pPage->pBt->usableSize-4 ){
      return SQLITE_CORRUPT_PAGE(pPage);
    }
    assert( iFreeBlk>iPtr || iFreeBlk==0 );
  
    /* At this point:
    **    iFreeBlk:   First freeblock after iStart, or zero if none
    **    iPtr:       The address of a pointer to iFreeBlk
    **
    ** Check to see if iFreeBlk should be coalesced onto the end of iStart.
    */
    if( iFreeBlk && iEnd+3>=iFreeBlk ){
      nFrag = iFreeBlk - iEnd;
      if( iEnd>iFreeBlk ) return SQLITE_CORRUPT_PAGE(pPage);
      iEnd = iFreeBlk + get2byte(&data[iFreeBlk+2]);
      if( iEnd > pPage->pBt->usableSize ){
        return SQLITE_CORRUPT_PAGE(pPage);
      }
      iSize = iEnd - iStart;
      iFreeBlk = get2byte(&data[iFreeBlk]);
    }
  
    /* If iPtr is another freeblock (that is, if iPtr is not the freelist
    ** pointer in the page header) then check to see if iStart should be
    ** coalesced onto the end of iPtr.
    */
    if( iPtr>hdr+1 ){
      int iPtrEnd = iPtr + get2byte(&data[iPtr+2]);
      if( iPtrEnd+3>=iStart ){
        if( iPtrEnd>iStart ) return SQLITE_CORRUPT_PAGE(pPage);
        nFrag += iStart - iPtrEnd;
        iSize = iEnd - iPtr;
        iStart = iPtr;
      }
    }
    if( nFrag>data[hdr+7] ) return SQLITE_CORRUPT_PAGE(pPage);
    data[hdr+7] -= nFrag;
  }
  x = get2byte(&data[hdr+5]);
  if( iStart<=x ){
    /* The new freeblock is at the beginning of the cell content area,
    ** so just extend the cell content area rather than create another
    ** freelist entry */
    if( iStart<x || iPtr!=hdr+1 ) return SQLITE_CORRUPT_PAGE(pPage);
    put2byte(&data[hdr+1], iFreeBlk);
    put2byte(&data[hdr+5], iEnd);
  }else{
    /* Insert the new freeblock into the freelist */
    put2byte(&data[iPtr], iStart);
  }
  if( pPage->pBt->btsFlags & BTS_FAST_SECURE ){
................................................................................
    pPage->intKeyLeaf = 0;
    pPage->xParseCell = btreeParseCellPtrIndex;
    pPage->maxLocal = pBt->maxLocal;
    pPage->minLocal = pBt->minLocal;
  }else{
    /* EVIDENCE-OF: R-47608-56469 Any other value for the b-tree page type is
    ** an error. */
    return SQLITE_CORRUPT_PAGE(pPage);
  }
  pPage->max1bytePayload = pBt->max1bytePayload;
  return SQLITE_OK;
}

/*
** Initialize the auxiliary information for a disk block.
................................................................................

  pBt = pPage->pBt;
  hdr = pPage->hdrOffset;
  data = pPage->aData;
  /* EVIDENCE-OF: R-28594-02890 The one-byte flag at offset 0 indicating
  ** the b-tree page type. */
  if( decodeFlags(pPage, data[hdr]) ){
    return SQLITE_CORRUPT_PAGE(pPage);
  }
  assert( pBt->pageSize>=512 && pBt->pageSize<=65536 );
  pPage->maskPage = (u16)(pBt->pageSize - 1);
  pPage->nOverflow = 0;
  usableSize = pBt->usableSize;
  pPage->cellOffset = cellOffset = hdr + 8 + pPage->childPtrSize;
  pPage->aDataEnd = &data[usableSize];
................................................................................
  ** interpreted as 65536. */
  top = get2byteNotZero(&data[hdr+5]);
  /* EVIDENCE-OF: R-37002-32774 The two-byte integer at offset 3 gives the
  ** number of cells on the page. */
  pPage->nCell = get2byte(&data[hdr+3]);
  if( pPage->nCell>MX_CELL(pBt) ){
    /* To many cells for a single page.  The page must be corrupt */
    return SQLITE_CORRUPT_PAGE(pPage);
  }
  testcase( pPage->nCell==MX_CELL(pBt) );
  /* EVIDENCE-OF: R-24089-57979 If a page contains no cells (which is only
  ** possible for a root page of a table that contains no rows) then the
  ** offset to the cell content area will equal the page size minus the
  ** bytes of reserved space. */
  assert( pPage->nCell>0 || top==usableSize || CORRUPT_DB );
................................................................................

    if( !pPage->leaf ) iCellLast--;
    for(i=0; i<pPage->nCell; i++){
      pc = get2byteAligned(&data[cellOffset+i*2]);
      testcase( pc==iCellFirst );
      testcase( pc==iCellLast );
      if( pc<iCellFirst || pc>iCellLast ){
        return SQLITE_CORRUPT_PAGE(pPage);
      }
      sz = pPage->xCellSize(pPage, &data[pc]);
      testcase( pc+sz==usableSize );
      if( pc+sz>usableSize ){
        return SQLITE_CORRUPT_PAGE(pPage);
      }
    }
    if( !pPage->leaf ) iCellLast++;
  }  

  /* Compute the total free space on the page
  ** EVIDENCE-OF: R-23588-34450 The two-byte integer at offset 1 gives the
................................................................................
  nFree = data[hdr+7] + top;  /* Init nFree to non-freeblock free space */
  if( pc>0 ){
    u32 next, size;
    if( pc<iCellFirst ){
      /* EVIDENCE-OF: R-55530-52930 In a well-formed b-tree page, there will
      ** always be at least one cell before the first freeblock.
      */
      return SQLITE_CORRUPT_PAGE(pPage); 
    }
    while( 1 ){
      if( pc>iCellLast ){
        /* Freeblock off the end of the page */
        return SQLITE_CORRUPT_PAGE(pPage);
      }
      next = get2byte(&data[pc]);
      size = get2byte(&data[pc+2]);
      nFree = nFree + size;
      if( next<=pc+size+3 ) break;
      pc = next;
    }
    if( next>0 ){
      /* Freeblock not in ascending order */
      return SQLITE_CORRUPT_PAGE(pPage);
    }
    if( pc+size>(unsigned int)usableSize ){
      /* Last freeblock extends past page end */
      return SQLITE_CORRUPT_PAGE(pPage);
    }
  }

  /* At this point, nFree contains the sum of the offset to the start
  ** of the cell-content area plus the number of free bytes within
  ** the cell-content area. If this is greater than the usable-size
  ** of the page, then the page must be corrupted. This check also
  ** serves to verify that the offset to the start of the cell-content
  ** area, according to the page header, lies within the page.
  */
  if( nFree>usableSize ){
    return SQLITE_CORRUPT_PAGE(pPage);
  }
  pPage->nFree = (u16)(nFree - iCellFirst);
  pPage->isInit = 1;
  return SQLITE_OK;
}

/*
................................................................................
*/
static int modifyPagePointer(MemPage *pPage, Pgno iFrom, Pgno iTo, u8 eType){
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  if( eType==PTRMAP_OVERFLOW2 ){
    /* The pointer is always the first 4 bytes of the page in this case.  */
    if( get4byte(pPage->aData)!=iFrom ){
      return SQLITE_CORRUPT_PAGE(pPage);
    }
    put4byte(pPage->aData, iTo);
  }else{
    int i;
    int nCell;
    int rc;

................................................................................
    for(i=0; i<nCell; i++){
      u8 *pCell = findCell(pPage, i);
      if( eType==PTRMAP_OVERFLOW1 ){
        CellInfo info;
        pPage->xParseCell(pPage, pCell, &info);
        if( info.nLocal<info.nPayload ){
          if( pCell+info.nSize > pPage->aData+pPage->pBt->usableSize ){
            return SQLITE_CORRUPT_PAGE(pPage);
          }
          if( iFrom==get4byte(pCell+info.nSize-4) ){
            put4byte(pCell+info.nSize-4, iTo);
            break;
          }
        }
      }else{
................................................................................
        }
      }
    }
  
    if( i==nCell ){
      if( eType!=PTRMAP_BTREE || 
          get4byte(&pPage->aData[pPage->hdrOffset+8])!=iFrom ){
        return SQLITE_CORRUPT_PAGE(pPage);
      }
      put4byte(&pPage->aData[pPage->hdrOffset+8], iTo);
    }
  }
  return SQLITE_OK;
}

................................................................................
  assert( cursorHoldsMutex(pCur) );
  assert( pCur->eState==CURSOR_VALID );
  assert( pCur->curIntKey );
  getCellInfo(pCur);
  return pCur->info.nKey;
}

#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
/*
** Return the offset into the database file for the start of the
** payload to which the cursor is pointing.
*/
SQLITE_PRIVATE i64 sqlite3BtreeOffset(BtCursor *pCur){
  assert( cursorHoldsMutex(pCur) );
  assert( pCur->eState==CURSOR_VALID );
  getCellInfo(pCur);
  return (i64)pCur->pBt->pageSize*((i64)pCur->pPage->pgno - 1) +
         (i64)(pCur->info.pPayload - pCur->pPage->aData);
}
#endif /* SQLITE_ENABLE_OFFSET_SQL_FUNC */

/*
** Return the number of bytes of payload for the entry that pCur is
** currently pointing to.  For table btrees, this will be the amount
** of data.  For index btrees, this will be the size of the key.
**
** The caller must guarantee that the cursor is pointing to a non-NULL
** valid entry.  In other words, the calling procedure must guarantee
................................................................................
  assert( aPayload > pPage->aData );
  if( (uptr)(aPayload - pPage->aData) > (pBt->usableSize - pCur->info.nLocal) ){
    /* Trying to read or write past the end of the data is an error.  The
    ** conditional above is really:
    **    &aPayload[pCur->info.nLocal] > &pPage->aData[pBt->usableSize]
    ** but is recast into its current form to avoid integer overflow problems
    */
    return SQLITE_CORRUPT_PAGE(pPage);
  }

  /* Check if data must be read/written to/from the btree page itself. */
  if( offset<pCur->info.nLocal ){
    int a = amt;
    if( a+offset>pCur->info.nLocal ){
      a = pCur->info.nLocal - offset;
................................................................................
      if( rc ) break;
      iIdx++;
    }
  }

  if( rc==SQLITE_OK && amt>0 ){
    /* Overflow chain ends prematurely */
    return SQLITE_CORRUPT_PAGE(pPage);
  }
  return rc;
}

/*
** Read part of the payload for the row at which that cursor pCur is currently
** pointing.  "amt" bytes will be transferred into pBuf[].  The transfer
................................................................................
  ** Earlier versions of SQLite assumed that this test could not fail
  ** if the root page was already loaded when this function was called (i.e.
  ** if pCur->iPage>=0). But this is not so if the database is corrupted 
  ** in such a way that page pRoot is linked into a second b-tree table 
  ** (or the freelist).  */
  assert( pRoot->intKey==1 || pRoot->intKey==0 );
  if( pRoot->isInit==0 || (pCur->pKeyInfo==0)!=pRoot->intKey ){
    return SQLITE_CORRUPT_PAGE(pCur->pPage);
  }

skip_init:  
  pCur->ix = 0;
  pCur->info.nSize = 0;
  pCur->curFlags &= ~(BTCF_AtLast|BTCF_ValidNKey|BTCF_ValidOvfl);

................................................................................
    if( xRecordCompare==0 ){
      for(;;){
        i64 nCellKey;
        pCell = findCellPastPtr(pPage, idx);
        if( pPage->intKeyLeaf ){
          while( 0x80 <= *(pCell++) ){
            if( pCell>=pPage->aDataEnd ){
              return SQLITE_CORRUPT_PAGE(pPage);
            }
          }
        }
        getVarint(pCell, (u64*)&nCellKey);
        if( nCellKey<intKey ){
          lwr = idx+1;
          if( lwr>upr ){ c = -1; break; }
................................................................................
          pPage->xParseCell(pPage, pCellBody, &pCur->info);
          nCell = (int)pCur->info.nKey;
          testcase( nCell<0 );   /* True if key size is 2^32 or more */
          testcase( nCell==0 );  /* Invalid key size:  0x80 0x80 0x00 */
          testcase( nCell==1 );  /* Invalid key size:  0x80 0x80 0x01 */
          testcase( nCell==2 );  /* Minimum legal index key size */
          if( nCell<2 ){
            rc = SQLITE_CORRUPT_PAGE(pPage);
            goto moveto_finish;
          }
          pCellKey = sqlite3Malloc( nCell+18 );
          if( pCellKey==0 ){
            rc = SQLITE_NOMEM_BKPT;
            goto moveto_finish;
          }
................................................................................
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  pPage->xParseCell(pPage, pCell, pInfo);
  if( pInfo->nLocal==pInfo->nPayload ){
    return SQLITE_OK;  /* No overflow pages. Return without doing anything */
  }
  if( pCell+pInfo->nSize-1 > pPage->aData+pPage->maskPage ){
    /* Cell extends past end of page */
    return SQLITE_CORRUPT_PAGE(pPage);
  }
  ovflPgno = get4byte(pCell + pInfo->nSize - 4);
  pBt = pPage->pBt;
  assert( pBt->usableSize > 4 );
  ovflPageSize = pBt->usableSize - 4;
  nOvfl = (pInfo->nPayload - pInfo->nLocal + ovflPageSize - 1)/ovflPageSize;
  assert( nOvfl>0 || 
................................................................................
** This routine calls the finalize method for that function.  The
** result of the aggregate is stored back into pMem.
**
** Return SQLITE_ERROR if the finalizer reports an error.  SQLITE_OK
** otherwise.
*/
SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem *pMem, FuncDef *pFunc){


  sqlite3_context ctx;
  Mem t;
  assert( pFunc!=0 );
  assert( pFunc->xFinalize!=0 );
  assert( (pMem->flags & MEM_Null)!=0 || pFunc==pMem->u.pDef );
  assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) );
  memset(&ctx, 0, sizeof(ctx));
  memset(&t, 0, sizeof(t));
  t.flags = MEM_Null;
  t.db = pMem->db;
  ctx.pOut = &t;
  ctx.pMem = pMem;
  ctx.pFunc = pFunc;
  pFunc->xFinalize(&ctx); /* IMP: R-24505-23230 */
  assert( (pMem->flags & MEM_Dyn)==0 );
  if( pMem->szMalloc>0 ) sqlite3DbFreeNN(pMem->db, pMem->zMalloc);
  memcpy(pMem, &t, sizeof(t));
  return ctx.isError;


}

/*
** If the memory cell contains a value that must be freed by
** invoking the external callback in Mem.xDel, then this routine
** will free that value.  It also sets Mem.flags to MEM_Null.
**
................................................................................
  sqlite3_value *pVal = 0;
  int negInt = 1;
  const char *zNeg = "";
  int rc = SQLITE_OK;

  assert( pExpr!=0 );
  while( (op = pExpr->op)==TK_UPLUS || op==TK_SPAN ) pExpr = pExpr->pLeft;
#if defined(SQLITE_ENABLE_STAT3_OR_STAT4)
  if( op==TK_REGISTER ) op = pExpr->op2;
#else
  if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;
#endif

  /* Compressed expressions only appear when parsing the DEFAULT clause
  ** on a table column definition, and hence only when pCtx==0.  This
  ** check ensures that an EP_TokenOnly expression is never passed down
  ** into valueFromFunction(). */
  assert( (pExpr->flags & EP_TokenOnly)==0 || pCtx==0 );

................................................................................
  }
#endif

  *ppVal = pVal;
  return rc;

no_mem:
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pCtx==0 || pCtx->pParse->nErr==0 )
#endif
    sqlite3OomFault(db);
  sqlite3DbFree(db, zVal);
  assert( *ppVal==0 );
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pCtx==0 ) sqlite3ValueFree(pVal);
#else
  assert( pCtx==0 ); sqlite3ValueFree(pVal);
#endif
................................................................................
  int nSub = 0;                        /* Number of sub-vdbes seen so far */
  SubProgram **apSub = 0;              /* Array of sub-vdbes */
  Mem *pSub = 0;                       /* Memory cell hold array of subprogs */
  sqlite3 *db = p->db;                 /* The database connection */
  int i;                               /* Loop counter */
  int rc = SQLITE_OK;                  /* Return code */
  Mem *pMem = &p->aMem[1];             /* First Mem of result set */
  int bListSubprogs = (p->explain==1 || (db->flags & SQLITE_TriggerEQP)!=0);
  Op *pOp = 0;

  assert( p->explain );
  assert( p->magic==VDBE_MAGIC_RUN );
  assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY || p->rc==SQLITE_NOMEM );

  /* Even though this opcode does not use dynamic strings for
  ** the result, result columns may become dynamic if the user calls
  ** sqlite3_column_text16(), causing a translation to UTF-16 encoding.
  */
  releaseMemArray(pMem, 8);
  p->pResultSet = 0;

  if( p->rc==SQLITE_NOMEM ){
    /* This happens if a malloc() inside a call to sqlite3_column_text() or
    ** sqlite3_column_text16() failed.  */
    sqlite3OomFault(db);
    return SQLITE_ERROR;
  }

  /* When the number of output rows reaches nRow, that means the
................................................................................
  ** listing has finished and sqlite3_step() should return SQLITE_DONE.
  ** nRow is the sum of the number of rows in the main program, plus
  ** the sum of the number of rows in all trigger subprograms encountered
  ** so far.  The nRow value will increase as new trigger subprograms are
  ** encountered, but p->pc will eventually catch up to nRow.
  */
  nRow = p->nOp;
  if( bListSubprogs ){
    /* The first 8 memory cells are used for the result set.  So we will
    ** commandeer the 9th cell to use as storage for an array of pointers
    ** to trigger subprograms.  The VDBE is guaranteed to have at least 9
    ** cells.  */
    assert( p->nMem>9 );
    pSub = &p->aMem[9];
    if( pSub->flags&MEM_Blob ){
................................................................................
    for(i=0; i<nSub; i++){
      nRow += apSub[i]->nOp;
    }
  }

  do{
    i = p->pc++;

    if( i>=nRow ){
      p->rc = SQLITE_OK;
      rc = SQLITE_DONE;







      break;
    }
    if( i<p->nOp ){
      /* The output line number is small enough that we are still in the
      ** main program. */
      pOp = &p->aOp[i];
    }else{
      /* We are currently listing subprograms.  Figure out which one and
      ** pick up the appropriate opcode. */
................................................................................
      int j;
      i -= p->nOp;
      for(j=0; i>=apSub[j]->nOp; j++){
        i -= apSub[j]->nOp;
      }
      pOp = &apSub[j]->aOp[i];
    }












    /* When an OP_Program opcode is encounter (the only opcode that has
    ** a P4_SUBPROGRAM argument), expand the size of the array of subprograms
    ** kept in p->aMem[9].z to hold the new program - assuming this subprogram
    ** has not already been seen.
    */
    if( bListSubprogs && pOp->p4type==P4_SUBPROGRAM ){
      int nByte = (nSub+1)*sizeof(SubProgram*);
      int j;
      for(j=0; j<nSub; j++){
        if( apSub[j]==pOp->p4.pProgram ) break;
      }
      if( j==nSub ){
        p->rc = sqlite3VdbeMemGrow(pSub, nByte, nSub!=0);
        if( p->rc!=SQLITE_OK ){
          rc = SQLITE_ERROR;
          break;
        }
        apSub = (SubProgram **)pSub->z;
        apSub[nSub++] = pOp->p4.pProgram;
        pSub->flags |= MEM_Blob;
        pSub->n = nSub*sizeof(SubProgram*);
        nRow += pOp->p4.pProgram->nOp;
      }
    }
  }while( p->explain==2 && pOp->opcode!=OP_Explain );

  if( rc==SQLITE_OK ){
    if( db->u1.isInterrupted ){
      p->rc = SQLITE_INTERRUPT;
      rc = SQLITE_ERROR;
      sqlite3VdbeError(p, sqlite3ErrStr(p->rc));
    }else{
      char *zP4;
      if( p->explain==1 ){
        pMem->flags = MEM_Int;
        pMem->u.i = i;                                /* Program counter */
        pMem++;
    
        pMem->flags = MEM_Static|MEM_Str|MEM_Term;
        pMem->z = (char*)sqlite3OpcodeName(pOp->opcode); /* Opcode */
        assert( pMem->z!=0 );
        pMem->n = sqlite3Strlen30(pMem->z);
        pMem->enc = SQLITE_UTF8;
        pMem++;
      }

      pMem->flags = MEM_Int;
      pMem->u.i = pOp->p1;                          /* P1 */
      pMem++;

      pMem->flags = MEM_Int;
      pMem->u.i = pOp->p2;                          /* P2 */
      pMem++;

      pMem->flags = MEM_Int;
      pMem->u.i = pOp->p3;                          /* P3 */
      pMem++;

      if( sqlite3VdbeMemClearAndResize(pMem, 100) ){ /* P4 */
        assert( p->db->mallocFailed );
        return SQLITE_ERROR;
      }
      pMem->flags = MEM_Str|MEM_Term;
      zP4 = displayP4(pOp, pMem->z, pMem->szMalloc);
      if( zP4!=pMem->z ){
        pMem->n = 0;
        sqlite3VdbeMemSetStr(pMem, zP4, -1, SQLITE_UTF8, 0);
      }else{
        assert( pMem->z!=0 );
        pMem->n = sqlite3Strlen30(pMem->z);
        pMem->enc = SQLITE_UTF8;
      }
      pMem++;

      if( p->explain==1 ){
        if( sqlite3VdbeMemClearAndResize(pMem, 4) ){
          assert( p->db->mallocFailed );
          return SQLITE_ERROR;
        }
        pMem->flags = MEM_Str|MEM_Term;
        pMem->n = 2;
        sqlite3_snprintf(3, pMem->z, "%.2x", pOp->p5);   /* P5 */
        pMem->enc = SQLITE_UTF8;
        pMem++;
    
#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
        if( sqlite3VdbeMemClearAndResize(pMem, 500) ){
          assert( p->db->mallocFailed );
          return SQLITE_ERROR;
        }
        pMem->flags = MEM_Str|MEM_Term;
        pMem->n = displayComment(pOp, zP4, pMem->z, 500);
        pMem->enc = SQLITE_UTF8;
#else
        pMem->flags = MEM_Null;                       /* Comment */
#endif
      }

      p->nResColumn = 8 - 4*(p->explain-1);
      p->pResultSet = &p->aMem[1];
      p->rc = SQLITE_OK;
      rc = SQLITE_ROW;
    }
  }
  return rc;
}
#endif /* SQLITE_OMIT_EXPLAIN */

#ifdef SQLITE_DEBUG
/*
................................................................................
      };
      Pager *pPager;   /* Pager associated with pBt */
      needXcommit = 1;
      sqlite3BtreeEnter(pBt);
      pPager = sqlite3BtreePager(pBt);
      if( db->aDb[i].safety_level!=PAGER_SYNCHRONOUS_OFF
       && aMJNeeded[sqlite3PagerGetJournalMode(pPager)]
       && sqlite3PagerIsMemdb(pPager)==0
      ){ 
        assert( i!=1 );
        nTrans++;
      }
      rc = sqlite3PagerExclusiveLock(pPager);
      sqlite3BtreeLeave(pBt);
    }
................................................................................

/*
** Delete an entire VDBE.
*/
SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe *p){
  sqlite3 *db;

  assert( p!=0 );
  db = p->db;
  assert( sqlite3_mutex_held(db->mutex) );
  sqlite3VdbeClearObject(db, p);
  if( p->pPrev ){
    p->pPrev->pNext = p->pNext;
  }else{
    assert( db->pVdbe==p );
................................................................................
** sqlite3_create_function16() routines that originally registered the
** application defined function.
*/
SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context *p){
  assert( p && p->pOut );
  return p->pOut->db;
}

/*
** If this routine is invoked from within an xColumn method of a virtual
** table, then it returns true if and only if the the call is during an
** UPDATE operation and the value of the column will not be modified
** by the UPDATE.
**
** If this routine is called from any context other than within the
** xColumn method of a virtual table, then the return value is meaningless
** and arbitrary.
**
** Virtual table implements might use this routine to optimize their
** performance by substituting a NULL result, or some other light-weight
** value, as a signal to the xUpdate routine that the column is unchanged.
*/
SQLITE_API int sqlite3_vtab_nochange(sqlite3_context *p){
  assert( p );
  return p->bVtabNoChng;
}

/*
** Return the current time for a statement.  If the current time
** is requested more than once within the same run of a single prepared
** statement, the exact same time is returned for each invocation regardless
** of the amount of time that elapses between invocations.  In other words,
** the time returned is always the time of the first call.
................................................................................
  if( p->apCsr[pOp->p1]->nullRow ){
    sqlite3VdbeMemSetNull(aMem + pOp->p3);
    goto jump_to_p2;
  }
  break;
}

#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
/* Opcode: Offset P1 P2 P3 * *
** Synopsis: r[P3] = sqlite_offset(P1)
**
** Store in register r[P3] the byte offset into the database file that is the
** start of the payload for the record at which that cursor P1 is currently
** pointing.
**
** P2 is the column number for the argument to the sqlite_offset() function.
** This opcode does not use P2 itself, but the P2 value is used by the
** code generator.  The P1, P2, and P3 operands to this opcode are the
** as as for OP_Column.
**
** This opcode is only available if SQLite is compiled with the
** -DSQLITE_ENABLE_OFFSET_SQL_FUNC option.
*/
case OP_Offset: {          /* out3 */
  VdbeCursor *pC;    /* The VDBE cursor */
  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
  pC = p->apCsr[pOp->p1];
  pOut = &p->aMem[pOp->p3];
  if( NEVER(pC==0) || pC->eCurType!=CURTYPE_BTREE ){
    sqlite3VdbeMemSetNull(pOut);
  }else{
    sqlite3VdbeMemSetInt64(pOut, sqlite3BtreeOffset(pC->uc.pCursor));
  }
  break;
}
#endif /* SQLITE_ENABLE_OFFSET_SQL_FUNC */

/* Opcode: Column P1 P2 P3 P4 P5
** Synopsis: r[P3]=PX
**
** Interpret the data that cursor P1 points to as a structure built using
** the MakeRecord instruction.  (See the MakeRecord opcode for additional
** information about the format of the data.)  Extract the P2-th column
** from this record.  If there are less that (P2+1) 
................................................................................
  VdbeBranchTaken(res!=0,2);
  if( res ) goto jump_to_p2;
  break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifndef SQLITE_OMIT_VIRTUALTABLE
/* Opcode: VColumn P1 P2 P3 P4 *
** Synopsis: r[P3]=vcolumn(P2)
**
** Store in register P3 the value of the P2-th column of
** the current row of the virtual-table of cursor P1.
**
** If the VColumn opcode is being used to fetch the value of
** an unchanging column during an UPDATE operation, then the P4
** value is 1.  Otherwise, P4 is 0.  The P4 value is returned
** by sqlite3_vtab_nochange() routine can can be used
** by virtual table implementations to return special "no-change"
** marks which can be more efficient, depending on the virtual table.
*/
case OP_VColumn: {
  sqlite3_vtab *pVtab;
  const sqlite3_module *pModule;
  Mem *pDest;
  sqlite3_context sContext;

................................................................................
    break;
  }
  pVtab = pCur->uc.pVCur->pVtab;
  pModule = pVtab->pModule;
  assert( pModule->xColumn );
  memset(&sContext, 0, sizeof(sContext));
  sContext.pOut = pDest;
  sContext.bVtabNoChng = pOp->p4.i!=0;
  MemSetTypeFlag(pDest, MEM_Null);
  rc = pModule->xColumn(pCur->uc.pVCur, &sContext, pOp->p2);
  sqlite3VtabImportErrmsg(p, pVtab);
  if( sContext.isError ){
    rc = sContext.isError;
  }
  sqlite3VdbeChangeEncoding(pDest, encoding);
................................................................................
  }

  REGISTER_TRACE(pOp->p3, pOut);
  UPDATE_MAX_BLOBSIZE(pOut);
  break;
}


/* Opcode: Trace P1 P2 * P4 *
**
** Write P4 on the statement trace output if statement tracing is
** enabled.
**
** Operand P1 must be 0x7fffffff and P2 must positive.
*/
/* Opcode: Init P1 P2 P3 P4 *
** Synopsis: Start at P2
**
** Programs contain a single instance of this opcode as the very first
** opcode.
**
** If tracing is enabled (by the sqlite3_trace()) interface, then
................................................................................
**
** Increment the value of P1 so that OP_Once opcodes will jump the
** first time they are evaluated for this run.
**
** If P3 is not zero, then it is an address to jump to if an SQLITE_CORRUPT
** error is encountered.
*/
case OP_Trace:
case OP_Init: {          /* jump */
  char *zTrace;
  int i;

  /* If the P4 argument is not NULL, then it must be an SQL comment string.
  ** The "--" string is broken up to prevent false-positives with srcck1.c.
  **
................................................................................
  ** This assert() provides evidence for:
  ** EVIDENCE-OF: R-50676-09860 The callback can compute the same text that
  ** would have been returned by the legacy sqlite3_trace() interface by
  ** using the X argument when X begins with "--" and invoking
  ** sqlite3_expanded_sql(P) otherwise.
  */
  assert( pOp->p4.z==0 || strncmp(pOp->p4.z, "-" "- ", 3)==0 );

  /* OP_Init is always instruction 0 */
  assert( pOp==p->aOp || pOp->opcode==OP_Trace );

#ifndef SQLITE_OMIT_TRACE
  if( (db->mTrace & (SQLITE_TRACE_STMT|SQLITE_TRACE_LEGACY))!=0
   && !p->doingRerun
   && (zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql))!=0
  ){
#ifndef SQLITE_OMIT_DEPRECATED
................................................................................
  ){
    sqlite3DebugPrintf("SQL-trace: %s\n", zTrace);
  }
#endif /* SQLITE_DEBUG */
#endif /* SQLITE_OMIT_TRACE */
  assert( pOp->p2>0 );
  if( pOp->p1>=sqlite3GlobalConfig.iOnceResetThreshold ){
    if( pOp->opcode==OP_Trace ) break;
    for(i=1; i<p->nOp; i++){
      if( p->aOp[i].opcode==OP_Once ) p->aOp[i].p1 = 0;
    }
    pOp->p1 = 0;
  }
  pOp->p1++;
  p->aCounter[SQLITE_STMTSTATUS_RUN]++;
................................................................................
SQLITE_PRIVATE int sqlite3WalkSelectExpr(Walker *pWalker, Select *p){
  if( sqlite3WalkExprList(pWalker, p->pEList) ) return WRC_Abort;
  if( sqlite3WalkExpr(pWalker, p->pWhere) ) return WRC_Abort;
  if( sqlite3WalkExprList(pWalker, p->pGroupBy) ) return WRC_Abort;
  if( sqlite3WalkExpr(pWalker, p->pHaving) ) return WRC_Abort;
  if( sqlite3WalkExprList(pWalker, p->pOrderBy) ) return WRC_Abort;
  if( sqlite3WalkExpr(pWalker, p->pLimit) ) return WRC_Abort;

  return WRC_Continue;
}

/*
** Walk the parse trees associated with all subqueries in the
** FROM clause of SELECT statement p.  Do not invoke the select
** callback on p, but do invoke it on each FROM clause subquery
................................................................................
*/
SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker *pWalker, Select *p){
  SrcList *pSrc;
  int i;
  struct SrcList_item *pItem;

  pSrc = p->pSrc;
  assert( pSrc!=0 );
  for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){
    if( pItem->pSelect && sqlite3WalkSelect(pWalker, pItem->pSelect) ){
      return WRC_Abort;
    }
    if( pItem->fg.isTabFunc
     && sqlite3WalkExprList(pWalker, pItem->u1.pFuncArg)
    ){
      return WRC_Abort;

    }
  }
  return WRC_Continue;
} 

/*
** Call sqlite3WalkExpr() for every expression in Select statement p.
................................................................................
    ** column in the FROM clause.  This is used by the LIMIT and ORDER BY
    ** clause processing on UPDATE and DELETE statements.
    */
    case TK_ROW: {
      SrcList *pSrcList = pNC->pSrcList;
      struct SrcList_item *pItem;
      assert( pSrcList && pSrcList->nSrc==1 );
      pItem = pSrcList->a;
      assert( HasRowid(pItem->pTab) && pItem->pTab->pSelect==0 );
      pExpr->op = TK_COLUMN;
      pExpr->pTab = pItem->pTab;
      pExpr->iTable = pItem->iCursor;
      pExpr->iColumn = -1;
      pExpr->affinity = SQLITE_AFF_INTEGER;
      break;
    }
................................................................................
    p->selFlags |= SF_Resolved;

    /* Resolve the expressions in the LIMIT and OFFSET clauses. These
    ** are not allowed to refer to any names, so pass an empty NameContext.
    */
    memset(&sNC, 0, sizeof(sNC));
    sNC.pParse = pParse;
    if( sqlite3ResolveExprNames(&sNC, p->pLimit) ){

      return WRC_Abort;
    }

    /* If the SF_Converted flags is set, then this Select object was
    ** was created by the convertCompoundSelectToSubquery() function.
    ** In this case the ORDER BY clause (p->pOrderBy) should be resolved
    ** as if it were part of the sub-query, not the parent. This block
................................................................................
  }
}
static void heightOfSelect(Select *p, int *pnHeight){
  if( p ){
    heightOfExpr(p->pWhere, pnHeight);
    heightOfExpr(p->pHaving, pnHeight);
    heightOfExpr(p->pLimit, pnHeight);

    heightOfExprList(p->pEList, pnHeight);
    heightOfExprList(p->pGroupBy, pnHeight);
    heightOfExprList(p->pOrderBy, pnHeight);
    heightOfSelect(p->pPrior, pnHeight);
  }
}

................................................................................
  assert( pToken );
  pNew = sqlite3ExprAlloc(db, TK_FUNCTION, pToken, 1);
  if( pNew==0 ){
    sqlite3ExprListDelete(db, pList); /* Avoid memory leak when malloc fails */
    return 0;
  }
  pNew->x.pList = pList;
  ExprSetProperty(pNew, EP_HasFunc);
  assert( !ExprHasProperty(pNew, EP_xIsSelect) );
  sqlite3ExprSetHeightAndFlags(pParse, pNew);
  return pNew;
}

/*
** Assign a variable number to an expression that encodes a wildcard
................................................................................
    pNew->pGroupBy = sqlite3ExprListDup(db, p->pGroupBy, flags);
    pNew->pHaving = sqlite3ExprDup(db, p->pHaving, flags);
    pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, flags);
    pNew->op = p->op;
    pNew->pNext = pNext;
    pNew->pPrior = 0;
    pNew->pLimit = sqlite3ExprDup(db, p->pLimit, flags);

    pNew->iLimit = 0;
    pNew->iOffset = 0;
    pNew->selFlags = p->selFlags & ~SF_UsesEphemeral;
    pNew->addrOpenEphm[0] = -1;
    pNew->addrOpenEphm[1] = -1;
    pNew->nSelectRow = p->nSelectRow;
    pNew->pWith = withDup(db, p->pWith);
................................................................................
** pList might be NULL following an OOM error.  But pSpan should never be
** NULL.  If a memory allocation fails, the pParse->db->mallocFailed flag
** is set.
*/
SQLITE_PRIVATE void sqlite3ExprListSetSpan(
  Parse *pParse,          /* Parsing context */
  ExprList *pList,        /* List to which to add the span. */
  const char *zStart,     /* Start of the span */
  const char *zEnd        /* End of the span */
){
  sqlite3 *db = pParse->db;
  assert( pList!=0 || db->mallocFailed!=0 );
  if( pList ){
    struct ExprList_item *pItem = &pList->a[pList->nExpr-1];
    assert( pList->nExpr>0 );

    sqlite3DbFree(db, pItem->zSpan);
    pItem->zSpan = sqlite3DbSpanDup(db, zStart, zEnd);

  }
}

/*
** If the expression list pEList contains more than iLimit elements,
** leave an error message in pParse.
*/
................................................................................
  if( p->selFlags & (SF_Distinct|SF_Aggregate) ){
    testcase( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct );
    testcase( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Aggregate );
    return 0; /* No DISTINCT keyword and no aggregate functions */
  }
  assert( p->pGroupBy==0 );              /* Has no GROUP BY clause */
  if( p->pLimit ) return 0;              /* Has no LIMIT clause */

  if( p->pWhere ) return 0;              /* Has no WHERE clause */
  pSrc = p->pSrc;
  assert( pSrc!=0 );
  if( pSrc->nSrc!=1 ) return 0;          /* Single term in FROM clause */
  if( pSrc->a[0].pSelect ) return 0;     /* FROM is not a subquery or view */
  pTab = pSrc->a[0].pTab;
  assert( pTab!=0 );
................................................................................
**     SELECT <column1>, <column2>... FROM <table>
**
** If the RHS of the IN operator is a list or a more complex subquery, then
** an ephemeral table might need to be generated from the RHS and then
** pX->iTable made to point to the ephemeral table instead of an
** existing table.
**
** The inFlags parameter must contain, at a minimum, one of the bits
** IN_INDEX_MEMBERSHIP or IN_INDEX_LOOP but not both.  If inFlags contains
** IN_INDEX_MEMBERSHIP, then the generated table will be used for a fast
** membership test.  When the IN_INDEX_LOOP bit is set, the IN index will
** be used to loop over all values of the RHS of the IN operator.

**
** When IN_INDEX_LOOP is used (and the b-tree will be used to iterate
** through the set members) then the b-tree must not contain duplicates.
** An epheremal table will be created unless the selected columns are guaranteed
** to be unique - either because it is an INTEGER PRIMARY KEY or due to
** a UNIQUE constraint or index.
**
** When IN_INDEX_MEMBERSHIP is used (and the b-tree will be used 
** for fast set membership tests) then an epheremal table must 
** be used unless <columns> is a single INTEGER PRIMARY KEY column or an 
** index can be found with the specified <columns> as its left-most.
................................................................................
      **
      ** In both cases, the query is augmented with "LIMIT 1".  Any 
      ** preexisting limit is discarded in place of the new LIMIT 1.
      */
      Select *pSel;                         /* SELECT statement to encode */
      SelectDest dest;                      /* How to deal with SELECT result */
      int nReg;                             /* Registers to allocate */
      Expr *pLimit;                         /* New limit expression */

      testcase( pExpr->op==TK_EXISTS );
      testcase( pExpr->op==TK_SELECT );
      assert( pExpr->op==TK_EXISTS || pExpr->op==TK_SELECT );
      assert( ExprHasProperty(pExpr, EP_xIsSelect) );

      pSel = pExpr->x.pSelect;
................................................................................
        sqlite3VdbeAddOp3(v, OP_Null, 0, dest.iSDParm, dest.iSDParm+nReg-1);
        VdbeComment((v, "Init subquery result"));
      }else{
        dest.eDest = SRT_Exists;
        sqlite3VdbeAddOp2(v, OP_Integer, 0, dest.iSDParm);
        VdbeComment((v, "Init EXISTS result"));
      }
      pLimit = sqlite3ExprAlloc(pParse->db, TK_INTEGER,&sqlite3IntTokens[1], 0);
      if( pSel->pLimit ){
        sqlite3ExprDelete(pParse->db, pSel->pLimit->pLeft);
        pSel->pLimit->pLeft = pLimit;
      }else{
        pSel->pLimit = sqlite3PExpr(pParse, TK_LIMIT, pLimit, 0);

      }
      pSel->iLimit = 0;
      pSel->selFlags &= ~SF_MultiValue;
      if( sqlite3Select(pParse, pSel, &dest) ){
        return 0;
      }
      rReg = dest.iSDParm;
      ExprSetVVAProperty(pExpr, EP_NoReduce);
................................................................................
        pDef = sqlite3VtabOverloadFunction(db, pDef, nFarg, pFarg->a[0].pExpr);
      }
#endif
      if( pDef->funcFlags & SQLITE_FUNC_NEEDCOLL ){
        if( !pColl ) pColl = db->pDfltColl; 
        sqlite3VdbeAddOp4(v, OP_CollSeq, 0, 0, 0, (char *)pColl, P4_COLLSEQ);
      }
#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
      if( pDef->funcFlags & SQLITE_FUNC_OFFSET ){
        Expr *pArg = pFarg->a[0].pExpr;
        if( pArg->op==TK_COLUMN ){
          sqlite3VdbeAddOp3(v, OP_Offset, pArg->iTable, pArg->iColumn, target);
        }else{
          sqlite3VdbeAddOp2(v, OP_Null, 0, target);
        }
      }else
#endif
      {
        sqlite3VdbeAddOp4(v, pParse->iSelfTab ? OP_PureFunc0 : OP_Function0,
                          constMask, r1, target, (char*)pDef, P4_FUNCDEF);
        sqlite3VdbeChangeP5(v, (u8)nFarg);
      }
      if( nFarg && constMask==0 ){
        sqlite3ReleaseTempRange(pParse, r1, nFarg);
      }
      return target;
    }
#ifndef SQLITE_OMIT_SUBQUERY
    case TK_EXISTS:
................................................................................
    }
    if( sqlite3FixExprList(pFix, pSelect->pOrderBy) ){
      return 1;
    }
    if( sqlite3FixExpr(pFix, pSelect->pLimit) ){
      return 1;
    }



    pSelect = pSelect->pPrior;
  }
  return 0;
}
SQLITE_PRIVATE int sqlite3FixExpr(
  DbFixer *pFix,     /* Context of the fixation */
  Expr *pExpr        /* The expression to be fixed to one database */
................................................................................
**
** Default value expressions must be constant.  Raise an exception if this
** is not the case.
**
** This routine is called by the parser while in the middle of
** parsing a CREATE TABLE statement.
*/
SQLITE_PRIVATE void sqlite3AddDefaultValue(
  Parse *pParse,           /* Parsing context */
  Expr *pExpr,             /* The parsed expression of the default value */
  const char *zStart,      /* Start of the default value text */
  const char *zEnd         /* First character past end of defaut value text */
){
  Table *p;
  Column *pCol;
  sqlite3 *db = pParse->db;
  p = pParse->pNewTable;
  if( p!=0 ){
    pCol = &(p->aCol[p->nCol-1]);
    if( !sqlite3ExprIsConstantOrFunction(pExpr, db->init.busy) ){
      sqlite3ErrorMsg(pParse, "default value of column [%s] is not constant",
          pCol->zName);
    }else{
      /* A copy of pExpr is used instead of the original, as pExpr contains
      ** tokens that point to volatile memory.	

      */
      Expr x;
      sqlite3ExprDelete(db, pCol->pDflt);
      memset(&x, 0, sizeof(x));
      x.op = TK_SPAN;
      x.u.zToken = sqlite3DbSpanDup(db, zStart, zEnd);

      x.pLeft = pExpr;
      x.flags = EP_Skip;
      pCol->pDflt = sqlite3ExprDup(db, &x, EXPRDUP_REDUCE);
      sqlite3DbFree(db, x.u.zToken);
    }
  }
  sqlite3ExprDelete(db, pExpr);
}

/*
** Backwards Compatibility Hack:
** 
** Historical versions of SQLite accepted strings as column names in
** indexes and PRIMARY KEY constraints and in UNIQUE constraints.  Example:
................................................................................
      assert(pParse->nTab==1);
      sqlite3MayAbort(pParse);
      sqlite3VdbeAddOp3(v, OP_OpenWrite, 1, pParse->regRoot, iDb);
      sqlite3VdbeChangeP5(v, OPFLAG_P2ISREG);
      pParse->nTab = 2;
      addrTop = sqlite3VdbeCurrentAddr(v) + 1;
      sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, addrTop);




      if( pParse->nErr ) return;
      pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect);
      if( pSelTab==0 ) return;
      assert( p->aCol==0 );
      p->nCol = pSelTab->nCol;
      p->aCol = pSelTab->aCol;
      pSelTab->nCol = 0;
      pSelTab->aCol = 0;
      sqlite3DeleteTable(db, pSelTab);
      sqlite3SelectDestInit(&dest, SRT_Coroutine, regYield);
      sqlite3Select(pParse, pSelect, &dest);
      if( pParse->nErr ) return;
      sqlite3VdbeEndCoroutine(v, regYield);
      sqlite3VdbeJumpHere(v, addrTop - 1);
      addrInsLoop = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm);
      VdbeCoverage(v);
      sqlite3VdbeAddOp3(v, OP_MakeRecord, dest.iSdst, dest.nSdst, regRec);
      sqlite3TableAffinity(v, p, 0);
      sqlite3VdbeAddOp2(v, OP_NewRowid, 1, regRowid);
      sqlite3VdbeAddOp3(v, OP_Insert, 1, regRec, regRowid);
      sqlite3VdbeGoto(v, addrInsLoop);
................................................................................
  p->pCheck = sqlite3ExprListDup(db, pCNames, EXPRDUP_REDUCE);
  if( db->mallocFailed ) goto create_view_fail;

  /* Locate the end of the CREATE VIEW statement.  Make sEnd point to
  ** the end.
  */
  sEnd = pParse->sLastToken;
  assert( sEnd.z[0]!=0 || sEnd.n==0 );
  if( sEnd.z[0]!=';' ){
    sEnd.z += sEnd.n;
  }
  sEnd.n = 0;
  n = (int)(sEnd.z - pBegin->z);
  assert( n>0 );
  z = pBegin->z;
................................................................................
  if( !p && (pOn || pUsing) ){
    sqlite3ErrorMsg(pParse, "a JOIN clause is required before %s", 
      (pOn ? "ON" : "USING")
    );
    goto append_from_error;
  }
  p = sqlite3SrcListAppend(db, p, pTable, pDatabase);
  if( p==0 ){
    goto append_from_error;
  }
  assert( p->nSrc>0 );
  pItem = &p->a[p->nSrc-1];
  assert( pAlias!=0 );
  if( pAlias->n ){
    pItem->zAlias = sqlite3NameFromToken(db, pAlias);
  }
  pItem->pSelect = pSubquery;
  pItem->pOn = pOn;
................................................................................
    for(i=0; i<nCol; i++){
      const char *zColl = pIdx->azColl[i];
      pKey->aColl[i] = zColl==sqlite3StrBINARY ? 0 :
                        sqlite3LocateCollSeq(pParse, zColl);
      pKey->aSortOrder[i] = pIdx->aSortOrder[i];
    }
    if( pParse->nErr ){
      assert( pParse->rc==SQLITE_ERROR_MISSING_COLLSEQ );
      if( pIdx->bNoQuery==0 ){
        /* Deactivate the index because it contains an unknown collating
        ** sequence.  The only way to reactive the index is to reload the
        ** schema.  Adding the missing collating sequence later does not
        ** reactive the index.  The application had the chance to register
        ** the missing index using the collation-needed callback.  For
        ** simplicity, SQLite will not give the application a second chance.
        */
        pIdx->bNoQuery = 1;
        pParse->rc = SQLITE_ERROR_RETRY;
      }
      sqlite3KeyInfoUnref(pKey);
      pKey = 0;
    }
  }
  return pKey;
}

................................................................................
  }
  if( p && !p->xCmp && synthCollSeq(db, p) ){
    p = 0;
  }
  assert( !p || p->xCmp );
  if( p==0 ){
    sqlite3ErrorMsg(pParse, "no such collation sequence: %s", zName);
    pParse->rc = SQLITE_ERROR_MISSING_COLLSEQ;
  }
  return p;
}

/*
** This routine is called on a collation sequence before it is used to
** check that it is defined. An undefined collation sequence exists when
................................................................................
** pWhere argument is an optional WHERE clause that restricts the
** set of rows in the view that are to be added to the ephemeral table.
*/
SQLITE_PRIVATE void sqlite3MaterializeView(
  Parse *pParse,       /* Parsing context */
  Table *pView,        /* View definition */
  Expr *pWhere,        /* Optional WHERE clause to be added */
  ExprList *pOrderBy,  /* Optional ORDER BY clause */
  Expr *pLimit,        /* Optional LIMIT clause */
  int iCur             /* Cursor number for ephemeral table */
){
  SelectDest dest;
  Select *pSel;
  SrcList *pFrom;
  sqlite3 *db = pParse->db;
  int iDb = sqlite3SchemaToIndex(db, pView->pSchema);
................................................................................
  if( pFrom ){
    assert( pFrom->nSrc==1 );
    pFrom->a[0].zName = sqlite3DbStrDup(db, pView->zName);
    pFrom->a[0].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zDbSName);
    assert( pFrom->a[0].pOn==0 );
    assert( pFrom->a[0].pUsing==0 );
  }
  pSel = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, pOrderBy, 
                          SF_IncludeHidden, pLimit);
  sqlite3SelectDestInit(&dest, SRT_EphemTab, iCur);
  sqlite3Select(pParse, pSel, &dest);
  sqlite3SelectDelete(db, pSel);
}
#endif /* !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) */

#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY)
................................................................................
*/
SQLITE_PRIVATE Expr *sqlite3LimitWhere(
  Parse *pParse,               /* The parser context */
  SrcList *pSrc,               /* the FROM clause -- which tables to scan */
  Expr *pWhere,                /* The WHERE clause.  May be null */
  ExprList *pOrderBy,          /* The ORDER BY clause.  May be null */
  Expr *pLimit,                /* The LIMIT clause.  May be null */

  char *zStmtType              /* Either DELETE or UPDATE.  For err msgs. */
){
  sqlite3 *db = pParse->db;
  Expr *pLhs = NULL;           /* LHS of IN(SELECT...) operator */
  Expr *pInClause = NULL;      /* WHERE rowid IN ( select ) */

  ExprList *pEList = NULL;     /* Expression list contaning only pSelectRowid */
  SrcList *pSelectSrc = NULL;  /* SELECT rowid FROM x ... (dup of pSrc) */
  Select *pSelect = NULL;      /* Complete SELECT tree */
  Table *pTab;

  /* Check that there isn't an ORDER BY without a LIMIT clause.
  */
  if( pOrderBy && pLimit==0 ) {
    sqlite3ErrorMsg(pParse, "ORDER BY without LIMIT on %s", zStmtType);
    sqlite3ExprDelete(pParse->db, pWhere);
    sqlite3ExprListDelete(pParse->db, pOrderBy);
    return 0;
  }

  /* We only need to generate a select expression if there
  ** is a limit/offset term to enforce.
  */
  if( pLimit == 0 ) {


    return pWhere;
  }

  /* Generate a select expression tree to enforce the limit/offset 
  ** term for the DELETE or UPDATE statement.  For example:
  **   DELETE FROM table_a WHERE col1=1 ORDER BY col2 LIMIT 1 OFFSET 1
  ** becomes:
  **   DELETE FROM table_a WHERE rowid IN ( 
  **     SELECT rowid FROM table_a WHERE col1=1 ORDER BY col2 LIMIT 1 OFFSET 1
  **   );
  */

  pTab = pSrc->a[0].pTab;
  if( HasRowid(pTab) ){
    pLhs = sqlite3PExpr(pParse, TK_ROW, 0, 0);

    pEList = sqlite3ExprListAppend(
        pParse, 0, sqlite3PExpr(pParse, TK_ROW, 0, 0)
    );
  }else{
    Index *pPk = sqlite3PrimaryKeyIndex(pTab);
    if( pPk->nKeyCol==1 ){
      const char *zName = pTab->aCol[pPk->aiColumn[0]].zName;
      pLhs = sqlite3Expr(db, TK_ID, zName);
      pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db, TK_ID, zName));
    }else{
      int i;
      for(i=0; i<pPk->nKeyCol; i++){
        Expr *p = sqlite3Expr(db, TK_ID, pTab->aCol[pPk->aiColumn[i]].zName);
        pEList = sqlite3ExprListAppend(pParse, pEList, p);

      }
      pLhs = sqlite3PExpr(pParse, TK_VECTOR, 0, 0);
      if( pLhs ){
        pLhs->x.pList = sqlite3ExprListDup(db, pEList, 0);
      }
    }
  }

  /* duplicate the FROM clause as it is needed by both the DELETE/UPDATE tree
  ** and the SELECT subtree. */
  pSrc->a[0].pTab = 0;
  pSelectSrc = sqlite3SrcListDup(pParse->db, pSrc, 0);



  pSrc->a[0].pTab = pTab;
  pSrc->a[0].pIBIndex = 0;


  /* generate the SELECT expression tree. */
  pSelect = sqlite3SelectNew(pParse, pEList, pSelectSrc, pWhere, 0 ,0, 
      pOrderBy,0,pLimit

  );

  /* now generate the new WHERE rowid IN clause for the DELETE/UDPATE */
  pInClause = sqlite3PExpr(pParse, TK_IN, pLhs, 0);

  sqlite3PExprAddSelect(pParse, pInClause, pSelect);
  return pInClause;







}
#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) */
       /*      && !defined(SQLITE_OMIT_SUBQUERY) */

/*
** Generate code for a DELETE FROM statement.
**
................................................................................
**     DELETE FROM table_wxyz WHERE a<5 AND b NOT NULL;
**                 \________/       \________________/
**                  pTabList              pWhere
*/
SQLITE_PRIVATE void sqlite3DeleteFrom(
  Parse *pParse,         /* The parser context */
  SrcList *pTabList,     /* The table from which we should delete things */
  Expr *pWhere,          /* The WHERE clause.  May be null */
  ExprList *pOrderBy,    /* ORDER BY clause. May be null */
  Expr *pLimit           /* LIMIT clause. May be null */
){
  Vdbe *v;               /* The virtual database engine */
  Table *pTab;           /* The table from which records will be deleted */
  int i;                 /* Loop counter */
  WhereInfo *pWInfo;     /* Information about the WHERE clause */
  Index *pIdx;           /* For looping over indices of the table */
  int iTabCur;           /* Cursor number for the table */
................................................................................

  memset(&sContext, 0, sizeof(sContext));
  db = pParse->db;
  if( pParse->nErr || db->mallocFailed ){
    goto delete_from_cleanup;
  }
  assert( pTabList->nSrc==1 );


  /* Locate the table which we want to delete.  This table has to be
  ** put in an SrcList structure because some of the subroutines we
  ** will be calling are designed to work with multiple tables and expect
  ** an SrcList* parameter instead of just a Table* parameter.
  */
  pTab = sqlite3SrcListLookup(pParse, pTabList);
................................................................................

  /* Figure out if we have any triggers and if the table being
  ** deleted from is a view
  */
#ifndef SQLITE_OMIT_TRIGGER
  pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0);
  isView = pTab->pSelect!=0;

#else
# define pTrigger 0
# define isView 0
#endif
  bComplex = pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0);
#ifdef SQLITE_OMIT_VIEW
# undef isView
# define isView 0
#endif

#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT
  if( !isView ){
    pWhere = sqlite3LimitWhere(
        pParse, pTabList, pWhere, pOrderBy, pLimit, "DELETE"
    );
    pOrderBy = 0;
    pLimit = 0;
  }
#endif

  /* If pTab is really a view, make sure it has been initialized.
  */
  if( sqlite3ViewGetColumnNames(pParse, pTab) ){
    goto delete_from_cleanup;
  }

................................................................................
  sqlite3BeginWriteOperation(pParse, 1, iDb);

  /* If we are trying to delete from a view, realize that view into
  ** an ephemeral table.
  */
#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
  if( isView ){
    sqlite3MaterializeView(pParse, pTab, 
        pWhere, pOrderBy, pLimit, iTabCur
    );
    iDataCur = iIdxCur = iTabCur;
    pOrderBy = 0;
    pLimit = 0;
  }
#endif

  /* Resolve the column names in the WHERE clause.
  */
  memset(&sNC, 0, sizeof(sNC));
  sNC.pParse = pParse;
................................................................................
    sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows deleted", SQLITE_STATIC);
  }

delete_from_cleanup:
  sqlite3AuthContextPop(&sContext);
  sqlite3SrcListDelete(db, pTabList);
  sqlite3ExprDelete(db, pWhere);
#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) 
  sqlite3ExprListDelete(db, pOrderBy);
  sqlite3ExprDelete(db, pLimit);
#endif
  sqlite3DbFree(db, aToOpen);
  return;
}
/* Make sure "isView" and other macros defined above are undefined. Otherwise
** they may interfere with compilation of other functions in this file
** (or in another file, if this file becomes part of the amalgamation).  */
#ifdef isView
................................................................................
      ** that point.
      **
      ** For a case-insensitive search, set variable cx to be the same as
      ** c but in the other case and search the input string for either
      ** c or cx.
      */
      if( c<=0x80 ){
        char zStop[3];
        int bMatch;
        if( noCase ){
          zStop[0] = sqlite3Toupper(c);
          zStop[1] = sqlite3Tolower(c);
          zStop[2] = 0;
        }else{
          zStop[0] = c;
          zStop[1] = 0;
        }
        while(1){
          zString += strcspn((const char*)zString, zStop);
          if( zString[0]==0 ) break;
          zString++;

          bMatch = patternCompare(zPattern,zString,pInfo,matchOther);
          if( bMatch!=SQLITE_NOMATCH ) return bMatch;
        }
      }else{
        int bMatch;
        while( (c2 = Utf8Read(zString))!=0 ){
          if( c2!=c ) continue;
................................................................................
#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */
    FUNCTION2(unlikely,          1, 0, 0, noopFunc,  SQLITE_FUNC_UNLIKELY),
    FUNCTION2(likelihood,        2, 0, 0, noopFunc,  SQLITE_FUNC_UNLIKELY),
    FUNCTION2(likely,            1, 0, 0, noopFunc,  SQLITE_FUNC_UNLIKELY),
#ifdef SQLITE_DEBUG
    FUNCTION2(affinity,          1, 0, 0, noopFunc,  SQLITE_FUNC_AFFINITY),
#endif
#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
    FUNCTION2(sqlite_offset,     1, 0, 0, noopFunc,  SQLITE_FUNC_OFFSET|
                                                     SQLITE_FUNC_TYPEOF),
#endif
    FUNCTION(ltrim,              1, 1, 0, trimFunc         ),
    FUNCTION(ltrim,              2, 1, 0, trimFunc         ),
    FUNCTION(rtrim,              1, 2, 0, trimFunc         ),
    FUNCTION(rtrim,              2, 2, 0, trimFunc         ),
    FUNCTION(trim,               1, 3, 0, trimFunc         ),
    FUNCTION(trim,               2, 3, 0, trimFunc         ),
    FUNCTION(min,               -1, 0, 1, minmaxFunc       ),
................................................................................
      }
      if( !p ) return;
      iSkip = sqlite3VdbeMakeLabel(v);
      sqlite3VdbeAddOp2(v, OP_FkIfZero, 1, iSkip); VdbeCoverage(v);
    }

    pParse->disableTriggers = 1;
    sqlite3DeleteFrom(pParse, sqlite3SrcListDup(db, pName, 0), 0, 0, 0);
    pParse->disableTriggers = 0;

    /* If the DELETE has generated immediate foreign key constraint 
    ** violations, halt the VDBE and return an error at this point, before
    ** any modifications to the schema are made. This is because statement
    ** transactions are not able to rollback schema changes.  
    **
................................................................................
      if( pRaise ){
        pRaise->affinity = OE_Abort;
      }
      pSelect = sqlite3SelectNew(pParse, 
          sqlite3ExprListAppend(pParse, 0, pRaise),
          sqlite3SrcListAppend(db, 0, &tFrom, 0),
          pWhere,
          0, 0, 0, 0, 0
      );
      pWhere = 0;
    }

    /* Disable lookaside memory allocation */
    db->lookaside.bDisable++;

................................................................................
        sqlite3VdbeAddOp3(v, OP_Column, srcTab, ipkColumn, regRowid);
      }else if( pSelect ){
        sqlite3VdbeAddOp2(v, OP_Copy, regFromSelect+ipkColumn, regRowid);
      }else{
        VdbeOp *pOp;
        sqlite3ExprCode(pParse, pList->a[ipkColumn].pExpr, regRowid);
        pOp = sqlite3VdbeGetOp(v, -1);
        assert( pOp!=0 );
        if( pOp->opcode==OP_Null && !IsVirtual(pTab) ){
          appendFlag = 1;
          pOp->opcode = OP_NewRowid;
          pOp->p1 = iDataCur;
          pOp->p2 = regRowid;
          pOp->p3 = regAutoinc;
        }
      }
................................................................................
         (0==pTab->pFKey && 0==sqlite3FkReferences(pTab)))
    ){
      sqlite3VdbeResolveLabel(v, addrUniqueOk);
      continue;
    }

    /* Check to see if the new index entry will be unique */
    sqlite3ExprCachePush(pParse);
    sqlite3VdbeAddOp4Int(v, OP_NoConflict, iThisCur, addrUniqueOk,
                         regIdx, pIdx->nKeyCol); VdbeCoverage(v);

    /* Generate code to handle collisions */
    regR = (pIdx==pPk) ? regIdx : sqlite3GetTempRange(pParse, nPkField);
    if( isUpdate || onError==OE_Replace ){
      if( HasRowid(pTab) ){
................................................................................
            regR, nPkField, 0, OE_Replace,
            (pIdx==pPk ? ONEPASS_SINGLE : ONEPASS_OFF), iThisCur);
        seenReplace = 1;
        break;
      }
    }
    sqlite3VdbeResolveLabel(v, addrUniqueOk);
    sqlite3ExprCachePop(pParse);
    if( regR!=regIdx ) sqlite3ReleaseTempRange(pParse, regR, nPkField);
  }
  if( ipkTop ){
    sqlite3VdbeGoto(v, ipkTop+1);
    sqlite3VdbeJumpHere(v, ipkBottom);
  }
  
................................................................................
  ** there is no ORDER BY, we will get an error. */
  if( pSelect->pGroupBy ){
    return 0;   /* SELECT may not have a GROUP BY clause */
  }
  if( pSelect->pLimit ){
    return 0;   /* SELECT may not have a LIMIT clause */
  }

  if( pSelect->pPrior ){
    return 0;   /* SELECT may not be a compound query */
  }
  if( pSelect->selFlags & SF_Distinct ){
    return 0;   /* SELECT may not be DISTINCT */
  }
  pEList = pSelect->pEList;
................................................................................

  zEntry = zProc ? zProc : "sqlite3_extension_init";

  handle = sqlite3OsDlOpen(pVfs, zFile);
#if SQLITE_OS_UNIX || SQLITE_OS_WIN
  for(ii=0; ii<ArraySize(azEndings) && handle==0; ii++){
    char *zAltFile = sqlite3_mprintf("%s.%s", zFile, azEndings[ii]);
    int bExists = 0;
    if( zAltFile==0 ) return SQLITE_NOMEM_BKPT;
    sqlite3OsAccess(pVfs, zAltFile, SQLITE_ACCESS_EXISTS, &bExists);
    if( bExists )  handle = sqlite3OsDlOpen(pVfs, zAltFile);
    sqlite3_free(zAltFile);
  }
#endif
  if( handle==0 ){
    if( pzErrMsg ){
      *pzErrMsg = zErrmsg = sqlite3_malloc64(nMsg);
      if( zErrmsg ){
................................................................................
  ** the returned data set are:
  **
  ** cid:        Column id (numbered from left to right, starting at 0)
  ** name:       Column name
  ** type:       Column declaration type.
  ** notnull:    True if 'NOT NULL' is part of column declaration
  ** dflt_value: The default value for the column, if any.
  ** pk:         Non-zero for PK fields.
  */
  case PragTyp_TABLE_INFO: if( zRight ){
    Table *pTab;
    pTab = sqlite3LocateTable(pParse, LOCATE_NOERR, zRight, zDb);
    if( pTab ){
      int i, k;
      int nHidden = 0;
................................................................................
  ** We return -1000000 instead of the more usual -1 simply because using
  ** -1000000 as the incorrect index into db->aDb[] is much 
  ** more likely to cause a segfault than -1 (of course there are assert()
  ** statements too, but it never hurts to play the odds).
  */
  assert( sqlite3_mutex_held(db->mutex) );
  if( pSchema ){
    for(i=0; 1; i++){
      assert( i<db->nDb );
      if( db->aDb[i].pSchema==pSchema ){
        break;
      }
    }
    assert( i>=0 && i<db->nDb );
  }
  return i;
................................................................................
    sParse.pTriggerPrg = pT->pNext;
    sqlite3DbFree(db, pT);
  }

end_prepare:

  sqlite3ParserReset(&sParse);


  return rc;
}
static int sqlite3LockAndPrepare(
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  u32 prepFlags,            /* Zero or more SQLITE_PREPARE_* flags */
  Vdbe *pOld,               /* VM being reprepared */
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
  const char **pzTail       /* OUT: End of parsed string */
){
  int rc;
  int cnt = 0;

#ifdef SQLITE_ENABLE_API_ARMOR
  if( ppStmt==0 ) return SQLITE_MISUSE_BKPT;
#endif
  *ppStmt = 0;
  if( !sqlite3SafetyCheckOk(db)||zSql==0 ){
    return SQLITE_MISUSE_BKPT;
  }
  sqlite3_mutex_enter(db->mutex);
  sqlite3BtreeEnterAll(db);
  do{
    /* Make multiple attempts to compile the SQL, until it either succeeds
    ** or encounters a permanent error.  A schema problem after one schema
    ** reset is considered a permanent error. */
    rc = sqlite3Prepare(db, zSql, nBytes, prepFlags, pOld, ppStmt, pzTail);
    assert( rc==SQLITE_OK || *ppStmt==0 );
  }while( rc==SQLITE_ERROR_RETRY
       || (rc==SQLITE_SCHEMA && (sqlite3ResetOneSchema(db,-1), cnt++)==0) );
  sqlite3BtreeLeaveAll(db);
  rc = sqlite3ApiExit(db, rc);
  assert( (rc&db->errMask)==rc );
  sqlite3_mutex_leave(db->mutex);
  return rc;
}

/*
** Rerun the compilation of a statement after a schema change.
**
** If the statement is successfully recompiled, return SQLITE_OK. Otherwise,
................................................................................
    sqlite3ExprListDelete(db, p->pEList);
    sqlite3SrcListDelete(db, p->pSrc);
    sqlite3ExprDelete(db, p->pWhere);
    sqlite3ExprListDelete(db, p->pGroupBy);
    sqlite3ExprDelete(db, p->pHaving);
    sqlite3ExprListDelete(db, p->pOrderBy);
    sqlite3ExprDelete(db, p->pLimit);

    if( OK_IF_ALWAYS_TRUE(p->pWith) ) sqlite3WithDelete(db, p->pWith);
    if( bFree ) sqlite3DbFreeNN(db, p);
    p = pPrior;
    bFree = 1;
  }
}

................................................................................
  ExprList *pEList,     /* which columns to include in the result */
  SrcList *pSrc,        /* the FROM clause -- which tables to scan */
  Expr *pWhere,         /* the WHERE clause */
  ExprList *pGroupBy,   /* the GROUP BY clause */
  Expr *pHaving,        /* the HAVING clause */
  ExprList *pOrderBy,   /* the ORDER BY clause */
  u32 selFlags,         /* Flag parameters, such as SF_Distinct */
  Expr *pLimit          /* LIMIT value.  NULL means not used */

){
  Select *pNew;
  Select standin;
  pNew = sqlite3DbMallocRawNN(pParse->db, sizeof(*pNew) );
  if( pNew==0 ){
    assert( pParse->db->mallocFailed );
    pNew = &standin;
................................................................................
  pNew->pWhere = pWhere;
  pNew->pGroupBy = pGroupBy;
  pNew->pHaving = pHaving;
  pNew->pOrderBy = pOrderBy;
  pNew->pPrior = 0;
  pNew->pNext = 0;
  pNew->pLimit = pLimit;

  pNew->pWith = 0;


  if( pParse->db->mallocFailed ) {
    clearSelect(pParse->db, pNew, pNew!=&standin);
    pNew = 0;
  }else{
    assert( pNew->pSrc!=0 || pParse->nErr>0 );
  }
  assert( pNew!=&standin );
................................................................................
  char const *zOrigDb = 0;
  char const *zOrigTab = 0;
  char const *zOrigCol = 0;
#endif

  assert( pExpr!=0 );
  assert( pNC->pSrcList!=0 );
  assert( pExpr->op!=TK_AGG_COLUMN );  /* This routine runes before aggregates
                                       ** are processed */
  switch( pExpr->op ){

    case TK_COLUMN: {
      /* The expression is a column. Locate the table the column is being
      ** extracted from in NameContext.pSrcList. This table may be real
      ** database table or a subquery.
      */
      Table *pTab = 0;            /* Table structure column is extracted from */
      Select *pS = 0;             /* Select the column is extracted from */
      int iCol = pExpr->iColumn;  /* Index of column in pTab */


      while( pNC && !pTab ){
        SrcList *pTabList = pNC->pSrcList;
        for(j=0;j<pTabList->nSrc && pTabList->a[j].iCursor!=pExpr->iTable;j++);
        if( j<pTabList->nSrc ){
          pTab = pTabList->a[j].pTab;
          pS = pTabList->a[j].pSelect;
        }else{
................................................................................
    return;
  }
#endif

  if( pParse->colNamesSet || db->mallocFailed ) return;
  /* Column names are determined by the left-most term of a compound select */
  while( pSelect->pPrior ) pSelect = pSelect->pPrior;
  SELECTTRACE(1,pParse,pSelect,("generating column names\n"));
  pTabList = pSelect->pSrc;
  pEList = pSelect->pEList;
  assert( v!=0 );
  assert( pTabList!=0 );
  pParse->colNamesSet = 1;
  fullName = (db->flags & SQLITE_FullColNames)!=0;
  srcName = (db->flags & SQLITE_ShortColNames)!=0 || fullName;
................................................................................
      /* If the column contains an "AS <name>" phrase, use <name> as the name */
    }else{
      Expr *pColExpr = sqlite3ExprSkipCollate(pEList->a[i].pExpr);
      while( pColExpr->op==TK_DOT ){
        pColExpr = pColExpr->pRight;
        assert( pColExpr!=0 );
      }
      assert( pColExpr->op!=TK_AGG_COLUMN );
      if( pColExpr->op==TK_COLUMN ){

        /* For columns use the column name name */
        int iCol = pColExpr->iColumn;
        Table *pTab = pColExpr->pTab;
        assert( pTab!=0 );
        if( iCol<0 ) iCol = pTab->iPKey;
        zName = iCol>=0 ? pTab->aCol[iCol].zName : "rowid";
      }else if( pColExpr->op==TK_ID ){
        assert( !ExprHasProperty(pColExpr, EP_IntValue) );
        zName = pColExpr->u.zToken;
      }else{
        /* Use the original text of the column expression as its name */
................................................................................
  }
  return sqlite3VdbeCreate(pParse);
}


/*
** Compute the iLimit and iOffset fields of the SELECT based on the
** pLimit expressions.  pLimit->pLeft and pLimit->pRight hold the expressions
** that appear in the original SQL statement after the LIMIT and OFFSET
** keywords.  Or NULL if those keywords are omitted. iLimit and iOffset 
** are the integer memory register numbers for counters used to compute 
** the limit and offset.  If there is no limit and/or offset, then 
** iLimit and iOffset are negative.
**
** This routine changes the values of iLimit and iOffset only if
** a limit or offset is defined by pLimit->pLeft and pLimit->pRight.  iLimit
** and iOffset should have been preset to appropriate default values (zero)
** prior to calling this routine.
**
** The iOffset register (if it exists) is initialized to the value
** of the OFFSET.  The iLimit register is initialized to LIMIT.  Register
** iOffset+1 is initialized to LIMIT+OFFSET.
**
** Only if pLimit->pLeft!=0 do the limit registers get
** redefined.  The UNION ALL operator uses this property to force
** the reuse of the same limit and offset registers across multiple
** SELECT statements.
*/
static void computeLimitRegisters(Parse *pParse, Select *p, int iBreak){
  Vdbe *v = 0;
  int iLimit = 0;
  int iOffset;
  int n;
  Expr *pLimit = p->pLimit;

  if( p->iLimit ) return;

  /* 
  ** "LIMIT -1" always shows all rows.  There is some
  ** controversy about what the correct behavior should be.
  ** The current implementation interprets "LIMIT 0" to mean
  ** no rows.
  */
  sqlite3ExprCacheClear(pParse);
  if( pLimit ){
    assert( pLimit->op==TK_LIMIT );
    assert( pLimit->pLeft!=0 );
    p->iLimit = iLimit = ++pParse->nMem;
    v = sqlite3GetVdbe(pParse);
    assert( v!=0 );
    if( sqlite3ExprIsInteger(pLimit->pLeft, &n) ){
      sqlite3VdbeAddOp2(v, OP_Integer, n, iLimit);
      VdbeComment((v, "LIMIT counter"));
      if( n==0 ){
        sqlite3VdbeGoto(v, iBreak);
      }else if( n>=0 && p->nSelectRow>sqlite3LogEst((u64)n) ){
        p->nSelectRow = sqlite3LogEst((u64)n);
        p->selFlags |= SF_FixedLimit;
      }
    }else{
      sqlite3ExprCode(pParse, pLimit->pLeft, iLimit);
      sqlite3VdbeAddOp1(v, OP_MustBeInt, iLimit); VdbeCoverage(v);
      VdbeComment((v, "LIMIT counter"));
      sqlite3VdbeAddOp2(v, OP_IfNot, iLimit, iBreak); VdbeCoverage(v);
    }
    if( pLimit->pRight ){
      p->iOffset = iOffset = ++pParse->nMem;
      pParse->nMem++;   /* Allocate an extra register for limit+offset */
      sqlite3ExprCode(pParse, pLimit->pRight, iOffset);
      sqlite3VdbeAddOp1(v, OP_MustBeInt, iOffset); VdbeCoverage(v);
      VdbeComment((v, "OFFSET counter"));
      sqlite3VdbeAddOp3(v, OP_OffsetLimit, iLimit, iOffset+1, iOffset);
      VdbeComment((v, "LIMIT+OFFSET"));
    }
  }
}
................................................................................
  int iQueue;                   /* The Queue table */
  int iDistinct = 0;            /* To ensure unique results if UNION */
  int eDest = SRT_Fifo;         /* How to write to Queue */
  SelectDest destQueue;         /* SelectDest targetting the Queue table */
  int i;                        /* Loop counter */
  int rc;                       /* Result code */
  ExprList *pOrderBy;           /* The ORDER BY clause */
  Expr *pLimit;                 /* Saved LIMIT and OFFSET */
  int regLimit, regOffset;      /* Registers used by LIMIT and OFFSET */

  /* Obtain authorization to do a recursive query */
  if( sqlite3AuthCheck(pParse, SQLITE_RECURSIVE, 0, 0, 0) ) return;

  /* Process the LIMIT and OFFSET clauses, if they exist */
  addrBreak = sqlite3VdbeMakeLabel(v);
  p->nSelectRow = 320;  /* 4 billion rows */
  computeLimitRegisters(pParse, p, addrBreak);
  pLimit = p->pLimit;

  regLimit = p->iLimit;
  regOffset = p->iOffset;
  p->pLimit = 0;
  p->iLimit = p->iOffset = 0;
  pOrderBy = p->pOrderBy;

  /* Locate the cursor number of the Current table */
  for(i=0; ALWAYS(i<pSrc->nSrc); i++){
    if( pSrc->a[i].fg.isRecursive ){
      iCurrent = pSrc->a[i].iCursor;
................................................................................
  sqlite3VdbeGoto(v, addrTop);
  sqlite3VdbeResolveLabel(v, addrBreak);

end_of_recursive_query:
  sqlite3ExprListDelete(pParse->db, p->pOrderBy);
  p->pOrderBy = pOrderBy;
  p->pLimit = pLimit;

  return;
}
#endif /* SQLITE_OMIT_CTE */

/* Forward references */
static int multiSelectOrderBy(
  Parse *pParse,        /* Parsing context */
................................................................................
  int nRow = 1;
  int rc = 0;
  assert( p->selFlags & SF_MultiValue );
  do{
    assert( p->selFlags & SF_Values );
    assert( p->op==TK_ALL || (p->op==TK_SELECT && p->pPrior==0) );
    assert( p->pLimit==0 );

    assert( p->pNext==0 || p->pEList->nExpr==p->pNext->pEList->nExpr );
    if( p->pPrior==0 ) break;
    assert( p->pPrior->pNext==p );
    p = p->pPrior;
    nRow++;
  }while(1);
  while( p ){
................................................................................
    case TK_ALL: {
      int addr = 0;
      int nLimit;
      assert( !pPrior->pLimit );
      pPrior->iLimit = p->iLimit;
      pPrior->iOffset = p->iOffset;
      pPrior->pLimit = p->pLimit;

      explainSetInteger(iSub1, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, pPrior, &dest);
      p->pLimit = 0;

      if( rc ){
        goto multi_select_end;
      }
      p->pPrior = 0;
      p->iLimit = pPrior->iLimit;
      p->iOffset = pPrior->iOffset;
      if( p->iLimit ){
................................................................................
      explainSetInteger(iSub2, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, p, &dest);
      testcase( rc!=SQLITE_OK );
      pDelete = p->pPrior;
      p->pPrior = pPrior;
      p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow);
      if( pPrior->pLimit
       && sqlite3ExprIsInteger(pPrior->pLimit->pLeft, &nLimit)
       && nLimit>0 && p->nSelectRow > sqlite3LogEst((u64)nLimit) 
      ){
        p->nSelectRow = sqlite3LogEst((u64)nLimit);
      }
      if( addr ){
        sqlite3VdbeJumpHere(v, addr);
      }
................................................................................
      break;
    }
    case TK_EXCEPT:
    case TK_UNION: {
      int unionTab;    /* Cursor number of the temporary table holding result */
      u8 op = 0;       /* One of the SRT_ operations to apply to self */
      int priorOp;     /* The SRT_ operation to apply to prior selects */
      Expr *pLimit;    /* Saved values of p->nLimit  */
      int addr;
      SelectDest uniondest;

      testcase( p->op==TK_EXCEPT );
      testcase( p->op==TK_UNION );
      priorOp = SRT_Union;
      if( dest.eDest==priorOp ){
        /* We can reuse a temporary table generated by a SELECT to our
        ** right.
        */
        assert( p->pLimit==0 );      /* Not allowed on leftward elements */

        unionTab = dest.iSDParm;
      }else{
        /* We will need to create our own temporary table to hold the
        ** intermediate results.
        */
        unionTab = pParse->nTab++;
        assert( p->pOrderBy==0 );
................................................................................
      }else{
        assert( p->op==TK_UNION );
        op = SRT_Union;
      }
      p->pPrior = 0;
      pLimit = p->pLimit;
      p->pLimit = 0;


      uniondest.eDest = op;
      explainSetInteger(iSub2, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, p, &uniondest);
      testcase( rc!=SQLITE_OK );
      /* Query flattening in sqlite3Select() might refill p->pOrderBy.
      ** Be sure to delete p->pOrderBy, therefore, to avoid a memory leak. */
      sqlite3ExprListDelete(db, p->pOrderBy);
................................................................................
      p->pPrior = pPrior;
      p->pOrderBy = 0;
      if( p->op==TK_UNION ){
        p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow);
      }
      sqlite3ExprDelete(db, p->pLimit);
      p->pLimit = pLimit;

      p->iLimit = 0;
      p->iOffset = 0;

      /* Convert the data in the temporary table into whatever form
      ** it is that we currently need.
      */
      assert( unionTab==dest.iSDParm || dest.eDest!=priorOp );
................................................................................
        sqlite3VdbeAddOp2(v, OP_Close, unionTab, 0);
      }
      break;
    }
    default: assert( p->op==TK_INTERSECT ); {
      int tab1, tab2;
      int iCont, iBreak, iStart;
      Expr *pLimit;
      int addr;
      SelectDest intersectdest;
      int r1;

      /* INTERSECT is different from the others since it requires
      ** two temporary tables.  Hence it has its own case.  Begin
      ** by allocating the tables we will need.
................................................................................
      */
      addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab2, 0);
      assert( p->addrOpenEphm[1] == -1 );
      p->addrOpenEphm[1] = addr;
      p->pPrior = 0;
      pLimit = p->pLimit;
      p->pLimit = 0;


      intersectdest.iSDParm = tab2;
      explainSetInteger(iSub2, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, p, &intersectdest);
      testcase( rc!=SQLITE_OK );
      pDelete = p->pPrior;
      p->pPrior = pPrior;
      if( p->nSelectRow>pPrior->nSelectRow ) p->nSelectRow = pPrior->nSelectRow;
      sqlite3ExprDelete(db, p->pLimit);
      p->pLimit = pLimit;


      /* Generate code to take the intersection of the two temporary
      ** tables.
      */
      assert( p->pEList );
      iBreak = sqlite3VdbeMakeLabel(v);
      iCont = sqlite3VdbeMakeLabel(v);
................................................................................
                                  regLimitA);
    sqlite3VdbeAddOp2(v, OP_Copy, regLimitA, regLimitB);
  }else{
    regLimitA = regLimitB = 0;
  }
  sqlite3ExprDelete(db, p->pLimit);
  p->pLimit = 0;



  regAddrA = ++pParse->nMem;
  regAddrB = ++pParse->nMem;
  regOutA = ++pParse->nMem;
  regOutB = ++pParse->nMem;
  sqlite3SelectDestInit(&destA, SRT_Coroutine, regAddrA);
  sqlite3SelectDestInit(&destB, SRT_Coroutine, regAddrB);
................................................................................
**  (18)  If the sub-query is a compound select, then all terms of the
**        ORDER BY clause of the parent must be simple references to 
**        columns of the sub-query.
**
**  (19)  If the subquery uses LIMIT then the outer query may not
**        have a WHERE clause.
**
**  (20)  If the sub-query is a compound select, then it must not use
**        an ORDER BY clause.  Ticket #3773.  We could relax this constraint
**        somewhat by saying that the terms of the ORDER BY clause must
**        appear as unmodified result columns in the outer query.  But we
**        have other optimizations in mind to deal with that case.

**
**  (21)  If the subquery uses LIMIT then the outer query may not be
**        DISTINCT.  (See ticket [752e1646fc]).
**
**  (22)  The subquery may not be a recursive CTE.
**
**  (**)  Subsumed into restriction (17d3).  Was: If the outer query is
................................................................................
  assert( pSubSrc );
  /* Prior to version 3.1.2, when LIMIT and OFFSET had to be simple constants,
  ** not arbitrary expressions, we allowed some combining of LIMIT and OFFSET
  ** because they could be computed at compile-time.  But when LIMIT and OFFSET
  ** became arbitrary expressions, we were forced to add restrictions (13)
  ** and (14). */
  if( pSub->pLimit && p->pLimit ) return 0;              /* Restriction (13) */
  if( pSub->pLimit && pSub->pLimit->pRight ) return 0;   /* Restriction (14) */
  if( (p->selFlags & SF_Compound)!=0 && pSub->pLimit ){
    return 0;                                            /* Restriction (15) */
  }
  if( pSubSrc->nSrc==0 ) return 0;                       /* Restriction (7)  */
  if( pSub->selFlags & SF_Distinct ) return 0;           /* Restriction (4)  */
  if( pSub->pLimit && (pSrc->nSrc>1 || isAgg) ){
     return 0;         /* Restrictions (8)(9) */
................................................................................

  /* Restriction (17): If the sub-query is a compound SELECT, then it must
  ** use only the UNION ALL operator. And none of the simple select queries
  ** that make up the compound SELECT are allowed to be aggregate or distinct
  ** queries.
  */
  if( pSub->pPrior ){
    if( pSub->pOrderBy ){
      return 0;  /* Restriction (20) */
    }
    if( isAgg || (p->selFlags & SF_Distinct)!=0 || pSrc->nSrc!=1 ){
      return 0; /* (17d1), (17d2), or (17d3) */
    }
    for(pSub1=pSub; pSub1; pSub1=pSub1->pPrior){
      testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct );
      testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Aggregate );
      assert( pSub->pSrc!=0 );
................................................................................
  ** The only way that the recursive part of a CTE can contain a compound
  ** subquery is for the subquery to be one term of a join.  But if the
  ** subquery is a join, then the flattening has already been stopped by
  ** restriction (17d3)
  */
  assert( (p->selFlags & SF_Recursive)==0 || pSub->pPrior==0 );










  /***** If we reach this point, flattening is permitted. *****/
  SELECTTRACE(1,pParse,p,("flatten %s.%p from term %d\n",
                   pSub->zSelName, pSub, iFrom));

  /* Authorize the subquery */
  pParse->zAuthContext = pSubitem->zName;
  TESTONLY(i =) sqlite3AuthCheck(pParse, SQLITE_SELECT, 0, 0, 0);
................................................................................
  **
  ** We call this the "compound-subquery flattening".
  */
  for(pSub=pSub->pPrior; pSub; pSub=pSub->pPrior){
    Select *pNew;
    ExprList *pOrderBy = p->pOrderBy;
    Expr *pLimit = p->pLimit;

    Select *pPrior = p->pPrior;
    p->pOrderBy = 0;
    p->pSrc = 0;
    p->pPrior = 0;
    p->pLimit = 0;

    pNew = sqlite3SelectDup(db, p, 0);
    sqlite3SelectSetName(pNew, pSub->zSelName);

    p->pLimit = pLimit;
    p->pOrderBy = pOrderBy;
    p->pSrc = pSrc;
    p->op = TK_ALL;
    if( pNew==0 ){
      p->pPrior = pPrior;
    }else{
................................................................................
    }
  }
  return nChng;
}
#endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */

/*
** The pFunc is the only aggregate function in the query.  Check to see
** if the query is a candidate for the min/max optimization. 
**
** If the query is a candidate for the min/max optimization, then set
** *ppMinMax to be an ORDER BY clause to be used for the optimization
** and return either WHERE_ORDERBY_MIN or WHERE_ORDERBY_MAX depending on
** whether pFunc is a min() or max() function.
**
** If the query is not a candidate for the min/max optimization, return
** WHERE_ORDERBY_NORMAL (which must be zero).
**
** This routine must be called after aggregate functions have been
** located but before their arguments have been subjected to aggregate
** analysis.
*/
static u8 minMaxQuery(sqlite3 *db, Expr *pFunc, ExprList **ppMinMax){
  int eRet = WHERE_ORDERBY_NORMAL;      /* Return value */
  ExprList *pEList = pFunc->x.pList;    /* Arguments to agg function */
  const char *zFunc;                    /* Name of aggregate function pFunc */
  ExprList *pOrderBy;
  u8 sortOrder;

  assert( *ppMinMax==0 );
  assert( pFunc->op==TK_AGG_FUNCTION );
  if( pEList==0 || pEList->nExpr!=1 ) return eRet;
  zFunc = pFunc->u.zToken;
  if( sqlite3StrICmp(zFunc, "min")==0 ){
    eRet = WHERE_ORDERBY_MIN;
    sortOrder = SQLITE_SO_ASC;
  }else if( sqlite3StrICmp(zFunc, "max")==0 ){
    eRet = WHERE_ORDERBY_MAX;
    sortOrder = SQLITE_SO_DESC;
  }else{
    return eRet;
  }
  *ppMinMax = pOrderBy = sqlite3ExprListDup(db, pEList, 0);
  assert( pOrderBy!=0 || db->mallocFailed );
  if( pOrderBy ) pOrderBy->a[0].sortOrder = sortOrder;
  return eRet;
}

/*
** The select statement passed as the first argument is an aggregate query.
** The second argument is the associated aggregate-info object. This 
** function tests if the SELECT is of the form:
................................................................................
  p->pWith = 0;
  p->selFlags &= ~SF_Compound;
  assert( (p->selFlags & SF_Converted)==0 );
  p->selFlags |= SF_Converted;
  assert( pNew->pPrior!=0 );
  pNew->pPrior->pNext = pNew;
  pNew->pLimit = 0;

  return WRC_Continue;
}

/*
** Check to see if the FROM clause term pFrom has table-valued function
** arguments.  If it does, leave an error message in pParse and return
** non-zero, since pFrom is not allowed to be a table-valued function.
................................................................................
  int i, j, k;
  SrcList *pTabList;
  ExprList *pEList;
  struct SrcList_item *pFrom;
  sqlite3 *db = pParse->db;
  Expr *pE, *pRight, *pExpr;
  u16 selFlags = p->selFlags;
  u32 elistFlags = 0;

  p->selFlags |= SF_Expanded;
  if( db->mallocFailed  ){
    return WRC_Abort;
  }
  assert( p->pSrc!=0 );
  if( (selFlags & SF_Expanded)!=0 ){
    return WRC_Prune;
  }
  pTabList = p->pSrc;
  pEList = p->pEList;
  if( OK_IF_ALWAYS_TRUE(p->pWith) ){
    sqlite3WithPush(pParse, p->pWith, 0);
  }
................................................................................
  */
  for(k=0; k<pEList->nExpr; k++){
    pE = pEList->a[k].pExpr;
    if( pE->op==TK_ASTERISK ) break;
    assert( pE->op!=TK_DOT || pE->pRight!=0 );
    assert( pE->op!=TK_DOT || (pE->pLeft!=0 && pE->pLeft->op==TK_ID) );
    if( pE->op==TK_DOT && pE->pRight->op==TK_ASTERISK ) break;
    elistFlags |= pE->flags;
  }
  if( k<pEList->nExpr ){
    /*
    ** If we get here it means the result set contains one or more "*"
    ** operators that need to be expanded.  Loop through each expression
    ** in the result set and expand them one by one.
    */
................................................................................
    ExprList *pNew = 0;
    int flags = pParse->db->flags;
    int longNames = (flags & SQLITE_FullColNames)!=0
                      && (flags & SQLITE_ShortColNames)==0;

    for(k=0; k<pEList->nExpr; k++){
      pE = a[k].pExpr;
      elistFlags |= pE->flags;
      pRight = pE->pRight;
      assert( pE->op!=TK_DOT || pRight!=0 );
      if( pE->op!=TK_ASTERISK
       && (pE->op!=TK_DOT || pRight->op!=TK_ASTERISK)
      ){
        /* This particular expression does not need to be expanded.
        */
................................................................................
          }
        }
      }
    }
    sqlite3ExprListDelete(db, pEList);
    p->pEList = pNew;
  }
  if( p->pEList ){
    if( p->pEList->nExpr>db->aLimit[SQLITE_LIMIT_COLUMN] ){
      sqlite3ErrorMsg(pParse, "too many columns in result set");
      return WRC_Abort;
    }
    if( (elistFlags & (EP_HasFunc|EP_Subquery))!=0 ){
      p->selFlags |= SF_ComplexResult;
    }
  }
  return WRC_Continue;
}

/*
** No-op routine for the parse-tree walker.
**
................................................................................
  Expr *pHaving;         /* The HAVING clause.  May be NULL */
  int rc = 1;            /* Value to return from this function */
  DistinctCtx sDistinct; /* Info on how to code the DISTINCT keyword */
  SortCtx sSort;         /* Info on how to code the ORDER BY clause */
  AggInfo sAggInfo;      /* Information used by aggregate queries */
  int iEnd;              /* Address of the end of the query */
  sqlite3 *db;           /* The database connection */
  ExprList *pMinMaxOrderBy = 0;  /* Added ORDER BY for min/max queries */
  u8 minMaxFlag;                 /* Flag for min/max queries */

#ifndef SQLITE_OMIT_EXPLAIN
  int iRestoreSelectId = pParse->iSelectId;
  pParse->iSelectId = pParse->iNextSelectId++;
#endif

  db = pParse->db;
................................................................................
    ** is not a join.  But if the outer query is not a join, then the subquery
    ** will be implemented as a co-routine and there is no advantage to
    ** flattening in that case.
    */
    if( (pSub->selFlags & SF_Aggregate)!=0 ) continue;
    assert( pSub->pGroupBy==0 );

    /* If the outer query contains a "complex" result set (that is,
    ** if the result set of the outer query uses functions or subqueries)
    ** and if the subquery contains an ORDER BY clause and if
    ** it will be implemented as a co-routine, then do not flatten.  This
    ** restriction allows SQL constructs like this:
    **
    **  SELECT expensive_function(x)
    **    FROM (SELECT x FROM tab ORDER BY y LIMIT 10);
    **
    ** The expensive_function() is only computed on the 10 rows that
    ** are output, rather than every row of the table.
    **
    ** The requirement that the outer query have a complex result set
    ** means that flattening does occur on simpler SQL constraints without
    ** the expensive_function() like:
    **
    **  SELECT x FROM (SELECT x FROM tab ORDER BY y LIMIT 10);
    */
    if( pSub->pOrderBy!=0
     && i==0
     && (p->selFlags & SF_ComplexResult)!=0
     && (pTabList->nSrc==1
         || (pTabList->a[1].fg.jointype&(JT_LEFT|JT_CROSS))!=0)
    ){
      continue;
    }

    if( flattenSubquery(pParse, p, i, isAgg) ){
................................................................................
        assert( pWhere==p->pWhere );
        havingToWhere(pParse, pGroupBy, pHaving, &p->pWhere);
        pWhere = p->pWhere;
      }
      sqlite3ExprAnalyzeAggregates(&sNC, pHaving);
    }
    sAggInfo.nAccumulator = sAggInfo.nColumn;
    if( p->pGroupBy==0 && p->pHaving==0 && sAggInfo.nFunc==1 ){
      minMaxFlag = minMaxQuery(db, sAggInfo.aFunc[0].pExpr, &pMinMaxOrderBy);
    }else{
      minMaxFlag = WHERE_ORDERBY_NORMAL;
    }
    for(i=0; i<sAggInfo.nFunc; i++){
      assert( !ExprHasProperty(sAggInfo.aFunc[i].pExpr, EP_xIsSelect) );
      sNC.ncFlags |= NC_InAggFunc;
      sqlite3ExprAnalyzeAggList(&sNC, sAggInfo.aFunc[i].pExpr->x.pList);
      sNC.ncFlags &= ~NC_InAggFunc;
    }
    sAggInfo.mxReg = pParse->nMem;
    if( db->mallocFailed ) goto select_end;
#if SELECTTRACE_ENABLED
    if( sqlite3SelectTrace & 0x400 ){
      int ii;
      SELECTTRACE(0x400,pParse,p,("After aggregate analysis:\n"));
      sqlite3TreeViewSelect(0, p, 0);
      for(ii=0; ii<sAggInfo.nColumn; ii++){
        sqlite3DebugPrintf("agg-column[%d] iMem=%d\n",
            ii, sAggInfo.aCol[ii].iMem);
        sqlite3TreeViewExpr(0, sAggInfo.aCol[ii].pExpr, 0);
      }
      for(ii=0; ii<sAggInfo.nFunc; ii++){
        sqlite3DebugPrintf("agg-func[%d]: iMem=%d\n",
            ii, sAggInfo.aFunc[ii].iMem);
        sqlite3TreeViewExpr(0, sAggInfo.aFunc[ii].pExpr, 0);
      }
    }
#endif


    /* Processing for aggregates with GROUP BY is very different and
    ** much more complex than aggregates without a GROUP BY.
    */
    if( pGroupBy ){
      KeyInfo *pKeyInfo;  /* Keying information for the group by clause */
      int addr1;          /* A-vs-B comparision jump */
................................................................................
      */
      sqlite3VdbeResolveLabel(v, addrReset);
      resetAccumulator(pParse, &sAggInfo);
      sqlite3VdbeAddOp1(v, OP_Return, regReset);
     
    } /* endif pGroupBy.  Begin aggregate queries without GROUP BY: */
    else {

#ifndef SQLITE_OMIT_BTREECOUNT
      Table *pTab;
      if( (pTab = isSimpleCount(p, &sAggInfo))!=0 ){
        /* If isSimpleCount() returns a pointer to a Table structure, then
        ** the SQL statement is of the form:
        **
        **   SELECT count(*) FROM <tbl>
................................................................................
        }
        sqlite3VdbeAddOp2(v, OP_Count, iCsr, sAggInfo.aFunc[0].iMem);
        sqlite3VdbeAddOp1(v, OP_Close, iCsr);
        explainSimpleCount(pParse, pTab, pBest);
      }else
#endif /* SQLITE_OMIT_BTREECOUNT */
      {













































        /* This case runs if the aggregate has no GROUP BY clause.  The
        ** processing is much simpler since there is only a single row
        ** of output.
        */
        assert( p->pGroupBy==0 );
        resetAccumulator(pParse, &sAggInfo);

        /* If this query is a candidate for the min/max optimization, then
        ** minMaxFlag will have been previously set to either
        ** WHERE_ORDERBY_MIN or WHERE_ORDERBY_MAX and pMinMaxOrderBy will
        ** be an appropriate ORDER BY expression for the optimization.
        */
        assert( minMaxFlag==WHERE_ORDERBY_NORMAL || pMinMaxOrderBy!=0 );
        assert( pMinMaxOrderBy==0 || pMinMaxOrderBy->nExpr==1 );

        pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, pMinMaxOrderBy,
                                   0, minMaxFlag, 0);
        if( pWInfo==0 ){

          goto select_end;
        }
        updateAccumulator(pParse, &sAggInfo);

        if( sqlite3WhereIsOrdered(pWInfo)>0 ){
          sqlite3VdbeGoto(v, sqlite3WhereBreakLabel(pWInfo));
          VdbeComment((v, "%s() by index",
                (minMaxFlag==WHERE_ORDERBY_MIN?"min":"max")));
        }
        sqlite3WhereEnd(pWInfo);
        finalizeAggFunctions(pParse, &sAggInfo);
      }

      sSort.pOrderBy = 0;
      sqlite3ExprIfFalse(pParse, pHaving, addrEnd, SQLITE_JUMPIFNULL);
      selectInnerLoop(pParse, p, -1, 0, 0, 
                      pDest, addrEnd, addrEnd);

    }
    sqlite3VdbeResolveLabel(v, addrEnd);
    
  } /* endif aggregate query */

  if( sDistinct.eTnctType==WHERE_DISTINCT_UNORDERED ){
    explainTempTable(pParse, "DISTINCT");
................................................................................
  rc = (pParse->nErr>0);

  /* Control jumps to here if an error is encountered above, or upon
  ** successful coding of the SELECT.
  */
select_end:
  explainSetInteger(pParse->iSelectId, iRestoreSelectId);
  sqlite3ExprListDelete(db, pMinMaxOrderBy);
  sqlite3DbFree(db, sAggInfo.aCol);
  sqlite3DbFree(db, sAggInfo.aFunc);
#if SELECTTRACE_ENABLED
  SELECTTRACE(1,pParse,p,("end processing\n"));
  pParse->nSelectIndent--;
#endif
  return rc;
................................................................................
    TriggerStep * pTmp = pTriggerStep;
    pTriggerStep = pTriggerStep->pNext;

    sqlite3ExprDelete(db, pTmp->pWhere);
    sqlite3ExprListDelete(db, pTmp->pExprList);
    sqlite3SelectDelete(db, pTmp->pSelect);
    sqlite3IdListDelete(db, pTmp->pIdList);
    sqlite3DbFree(db, pTmp->zSpan);

    sqlite3DbFree(db, pTmp);
  }
}

/*
** Given table pTab, return a list of all the triggers attached to 
................................................................................

triggerfinish_cleanup:
  sqlite3DeleteTrigger(db, pTrig);
  assert( !pParse->pNewTrigger );
  sqlite3DeleteTriggerStep(db, pStepList);
}

/*
** Duplicate a range of text from an SQL statement, then convert all
** whitespace characters into ordinary space characters.
*/
static char *triggerSpanDup(sqlite3 *db, const char *zStart, const char *zEnd){
  char *z = sqlite3DbSpanDup(db, zStart, zEnd);
  int i;
  if( z ) for(i=0; z[i]; i++) if( sqlite3Isspace(z[i]) ) z[i] = ' ';
  return z;
}    

/*
** Turn a SELECT statement (that the pSelect parameter points to) into
** a trigger step.  Return a pointer to a TriggerStep structure.
**
** The parser calls this routine when it finds a SELECT statement in
** body of a TRIGGER.  
*/
SQLITE_PRIVATE TriggerStep *sqlite3TriggerSelectStep(
  sqlite3 *db,                /* Database connection */
  Select *pSelect,            /* The SELECT statement */
  const char *zStart,         /* Start of SQL text */
  const char *zEnd            /* End of SQL text */
){
  TriggerStep *pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep));
  if( pTriggerStep==0 ) {
    sqlite3SelectDelete(db, pSelect);
    return 0;
  }
  pTriggerStep->op = TK_SELECT;
  pTriggerStep->pSelect = pSelect;
  pTriggerStep->orconf = OE_Default;
  pTriggerStep->zSpan = triggerSpanDup(db, zStart, zEnd);
  return pTriggerStep;
}

/*
** Allocate space to hold a new trigger step.  The allocated space
** holds both the TriggerStep object and the TriggerStep.target.z string.
**
** If an OOM error occurs, NULL is returned and db->mallocFailed is set.
*/
static TriggerStep *triggerStepAllocate(
  sqlite3 *db,                /* Database connection */
  u8 op,                      /* Trigger opcode */
  Token *pName,               /* The target name */
  const char *zStart,         /* Start of SQL text */
  const char *zEnd            /* End of SQL text */
){
  TriggerStep *pTriggerStep;

  pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep) + pName->n + 1);
  if( pTriggerStep ){
    char *z = (char*)&pTriggerStep[1];
    memcpy(z, pName->z, pName->n);
    sqlite3Dequote(z);
    pTriggerStep->zTarget = z;
    pTriggerStep->op = op;
    pTriggerStep->zSpan = triggerSpanDup(db, zStart, zEnd);
  }
  return pTriggerStep;
}

/*
** Build a trigger step out of an INSERT statement.  Return a pointer
** to the new trigger step.
................................................................................
** body of a trigger.
*/
SQLITE_PRIVATE TriggerStep *sqlite3TriggerInsertStep(
  sqlite3 *db,        /* The database connection */
  Token *pTableName,  /* Name of the table into which we insert */
  IdList *pColumn,    /* List of columns in pTableName to insert into */
  Select *pSelect,    /* A SELECT statement that supplies values */
  u8 orconf,          /* The conflict algorithm (OE_Abort, OE_Replace, etc.) */
  const char *zStart, /* Start of SQL text */
  const char *zEnd    /* End of SQL text */
){
  TriggerStep *pTriggerStep;

  assert(pSelect != 0 || db->mallocFailed);

  pTriggerStep = triggerStepAllocate(db, TK_INSERT, pTableName, zStart, zEnd);
  if( pTriggerStep ){
    pTriggerStep->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE);
    pTriggerStep->pIdList = pColumn;
    pTriggerStep->orconf = orconf;
  }else{
    sqlite3IdListDelete(db, pColumn);
  }
................................................................................
** sees an UPDATE statement inside the body of a CREATE TRIGGER.
*/
SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep(
  sqlite3 *db,         /* The database connection */
  Token *pTableName,   /* Name of the table to be updated */
  ExprList *pEList,    /* The SET clause: list of column and new values */
  Expr *pWhere,        /* The WHERE clause */
  u8 orconf,           /* The conflict algorithm. (OE_Abort, OE_Ignore, etc) */
  const char *zStart,  /* Start of SQL text */
  const char *zEnd     /* End of SQL text */
){
  TriggerStep *pTriggerStep;

  pTriggerStep = triggerStepAllocate(db, TK_UPDATE, pTableName, zStart, zEnd);
  if( pTriggerStep ){
    pTriggerStep->pExprList = sqlite3ExprListDup(db, pEList, EXPRDUP_REDUCE);
    pTriggerStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE);
    pTriggerStep->orconf = orconf;
  }
  sqlite3ExprListDelete(db, pEList);
  sqlite3ExprDelete(db, pWhere);
................................................................................
** Construct a trigger step that implements a DELETE statement and return
** a pointer to that trigger step.  The parser calls this routine when it
** sees a DELETE statement inside the body of a CREATE TRIGGER.
*/
SQLITE_PRIVATE TriggerStep *sqlite3TriggerDeleteStep(
  sqlite3 *db,            /* Database connection */
  Token *pTableName,      /* The table from which rows are deleted */
  Expr *pWhere,           /* The WHERE clause */
  const char *zStart,     /* Start of SQL text */
  const char *zEnd        /* End of SQL text */
){
  TriggerStep *pTriggerStep;

  pTriggerStep = triggerStepAllocate(db, TK_DELETE, pTableName, zStart, zEnd);
  if( pTriggerStep ){
    pTriggerStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE);
    pTriggerStep->orconf = OE_Default;
  }
  sqlite3ExprDelete(db, pWhere);
  return pTriggerStep;
}
................................................................................
    **   END;
    **
    **   INSERT INTO t1 ... ;            -- insert into t2 uses REPLACE policy
    **   INSERT OR IGNORE INTO t1 ... ;  -- insert into t2 uses IGNORE policy
    */
    pParse->eOrconf = (orconf==OE_Default)?pStep->orconf:(u8)orconf;
    assert( pParse->okConstFactor==0 );

#ifndef SQLITE_OMIT_TRACE
    if( pStep->zSpan ){
      sqlite3VdbeAddOp4(v, OP_Trace, 0x7fffffff, 1, 0,
                        sqlite3MPrintf(db, "-- %s", pStep->zSpan),
                        P4_DYNAMIC);
    }
#endif

    switch( pStep->op ){
      case TK_UPDATE: {
        sqlite3Update(pParse, 
          targetSrcList(pParse, pStep),
          sqlite3ExprListDup(db, pStep->pExprList, 0), 
          sqlite3ExprDup(db, pStep->pWhere, 0), 
          pParse->eOrconf, 0, 0
        );
        break;
      }
      case TK_INSERT: {
        sqlite3Insert(pParse, 
          targetSrcList(pParse, pStep),
          sqlite3SelectDup(db, pStep->pSelect, 0), 
................................................................................
          pParse->eOrconf
        );
        break;
      }
      case TK_DELETE: {
        sqlite3DeleteFrom(pParse, 
          targetSrcList(pParse, pStep),
          sqlite3ExprDup(db, pStep->pWhere, 0), 0, 0
        );
        break;
      }
      default: assert( pStep->op==TK_SELECT ); {
        SelectDest sDest;
        Select *pSelect = sqlite3SelectDup(db, pStep->pSelect, 0);
        sqlite3SelectDestInit(&sDest, SRT_Discard, 0);
................................................................................
      (pTrigger->tr_tm==TRIGGER_BEFORE ? "BEFORE" : "AFTER"),
        (pTrigger->op==TK_UPDATE ? "UPDATE" : ""),
        (pTrigger->op==TK_INSERT ? "INSERT" : ""),
        (pTrigger->op==TK_DELETE ? "DELETE" : ""),
      pTab->zName
    ));
#ifndef SQLITE_OMIT_TRACE
    if( pTrigger->zName ){
      sqlite3VdbeChangeP4(v, -1, 
        sqlite3MPrintf(db, "-- TRIGGER %s", pTrigger->zName), P4_DYNAMIC
      );
    }
#endif

    /* If one was specified, code the WHEN clause. If it evaluates to false
    ** (or NULL) the sub-vdbe is immediately halted by jumping to the 
    ** OP_Halt inserted at the end of the program.  */
    if( pTrigger->pWhen ){
      pWhen = sqlite3ExprDup(db, pTrigger->pWhen, 0);
................................................................................
    if( iEndTrigger ){
      sqlite3VdbeResolveLabel(v, iEndTrigger);
    }
    sqlite3VdbeAddOp0(v, OP_Halt);
    VdbeComment((v, "End: %s.%s", pTrigger->zName, onErrorText(orconf)));

    transferParseError(pParse, pSubParse);
    if( db->mallocFailed==0 && pParse->nErr==0 ){
      pProgram->aOp = sqlite3VdbeTakeOpArray(v, &pProgram->nOp, &pTop->nMaxArg);
    }
    pProgram->nMem = pSubParse->nMem;
    pProgram->nCsr = pSubParse->nTab;
    pProgram->token = (void *)pTrigger;
    pPrg->aColmask[0] = pSubParse->oldmask;
    pPrg->aColmask[1] = pSubParse->newmask;
................................................................................
*            onError   pTabList      pChanges             pWhere
*/
SQLITE_PRIVATE void sqlite3Update(
  Parse *pParse,         /* The parser context */
  SrcList *pTabList,     /* The table in which we should change things */
  ExprList *pChanges,    /* Things to be changed */
  Expr *pWhere,          /* The WHERE clause.  May be null */
  int onError,           /* How to handle constraint errors */
  ExprList *pOrderBy,    /* ORDER BY clause. May be null */
  Expr *pLimit           /* LIMIT clause. May be null */
){
  int i, j;              /* Loop counters */
  Table *pTab;           /* The table to be updated */
  int addrTop = 0;       /* VDBE instruction address of the start of the loop */
  WhereInfo *pWInfo;     /* Information about the WHERE clause */
  Vdbe *v;               /* The virtual database engine */
  Index *pIdx;           /* For looping over indices */
................................................................................
# define isView 0
# define tmask 0
#endif
#ifdef SQLITE_OMIT_VIEW
# undef isView
# define isView 0
#endif

#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT
  if( !isView ){
    pWhere = sqlite3LimitWhere(
        pParse, pTabList, pWhere, pOrderBy, pLimit, "UPDATE"
    );
    pOrderBy = 0;
    pLimit = 0;
  }
#endif

  if( sqlite3ViewGetColumnNames(pParse, pTab) ){
    goto update_cleanup;
  }
  if( sqlite3IsReadOnly(pParse, pTab, tmask) ){
    goto update_cleanup;
  }
................................................................................
  }

  /* If we are trying to update a view, realize that view into
  ** an ephemeral table.
  */
#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
  if( isView ){
    sqlite3MaterializeView(pParse, pTab, 
        pWhere, pOrderBy, pLimit, iDataCur
    );
    pOrderBy = 0;
    pLimit = 0;
  }
#endif

  /* Resolve the column names in all the expressions in the
  ** WHERE clause.
  */
  if( sqlite3ResolveExprNames(&sNC, pWhere) ){
................................................................................

update_cleanup:
  sqlite3AuthContextPop(&sContext);
  sqlite3DbFree(db, aXRef); /* Also frees aRegIdx[] and aToOpen[] */
  sqlite3SrcListDelete(db, pTabList);
  sqlite3ExprListDelete(db, pChanges);
  sqlite3ExprDelete(db, pWhere);
#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) 
  sqlite3ExprListDelete(db, pOrderBy);
  sqlite3ExprDelete(db, pLimit);
#endif
  return;
}
/* Make sure "isView" and other macros defined above are undefined. Otherwise
** they may interfere with compilation of other functions in this file
** (or in another file, if this file becomes part of the amalgamation).  */
#ifdef isView
 #undef isView
................................................................................
  int regRec;                     /* Register in which to assemble record */
  int regRowid;                   /* Register for ephem table rowid */
  int iCsr = pSrc->a[0].iCursor;  /* Cursor used for virtual table scan */
  int aDummy[2];                  /* Unused arg for sqlite3WhereOkOnePass() */
  int bOnePass;                   /* True to use onepass strategy */
  int addr;                       /* Address of OP_OpenEphemeral */

  /* Allocate nArg registers in which to gather the arguments for VUpdate. Then
  ** create and open the ephemeral table in which the records created from
  ** these arguments will be temporarily stored. */
  assert( v );
  ephemTab = pParse->nTab++;
  addr= sqlite3VdbeAddOp2(v, OP_OpenEphemeral, ephemTab, nArg);
  regArg = pParse->nMem + 1;
  pParse->nMem += nArg;
................................................................................
  if( pWInfo==0 ) return;

  /* Populate the argument registers. */
  for(i=0; i<pTab->nCol; i++){
    if( aXRef[i]>=0 ){
      sqlite3ExprCode(pParse, pChanges->a[aXRef[i]].pExpr, regArg+2+i);
    }else{
      sqlite3VdbeAddOp4Int(v, OP_VColumn, iCsr, i, regArg+2+i, 1);
    }
  }
  if( HasRowid(pTab) ){
    sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg);
    if( pRowid ){
      sqlite3ExprCode(pParse, pRowid, regArg+1);
    }else{
................................................................................
  WhereLevel *pLevel,             /* Scan to write OP_Explain opcode for */
  int iLevel,                     /* Value for "level" column of output */
  int iFrom,                      /* Value for "from" column of output */
  u16 wctrlFlags                  /* Flags passed to sqlite3WhereBegin() */
){
  int ret = 0;
#if !defined(SQLITE_DEBUG) && !defined(SQLITE_ENABLE_STMT_SCANSTATUS)
  if( sqlite3ParseToplevel(pParse)->explain==2 )
#endif
  {
    struct SrcList_item *pItem = &pTabList->a[pLevel->iFrom];
    Vdbe *v = pParse->pVdbe;      /* VM being constructed */
    sqlite3 *db = pParse->db;     /* Database handle */
    int iId = pParse->iSelectId;  /* Select id (left-most output column) */
    int isSearch;                 /* True for a SEARCH. False for SCAN. */
................................................................................
** term was originally TERM_LIKE, then the parent gets TERM_LIKECOND instead.
** The TERM_LIKECOND marking indicates that the term should be coded inside
** a conditional such that is only evaluated on the second pass of a
** LIKE-optimization loop, when scanning BLOBs instead of strings.
*/
static void disableTerm(WhereLevel *pLevel, WhereTerm *pTerm){
  int nLoop = 0;
  assert( pTerm!=0 );
  while( (pTerm->wtFlags & TERM_CODED)==0
      && (pLevel->iLeftJoin==0 || ExprHasProperty(pTerm->pExpr, EP_FromJoin))
      && (pLevel->notReady & pTerm->prereqAll)==0
  ){
    if( nLoop && (pTerm->wtFlags & TERM_LIKE)!=0 ){
      pTerm->wtFlags |= TERM_LIKECOND;
    }else{
      pTerm->wtFlags |= TERM_CODED;
    }
    if( pTerm->iParent<0 ) break;
    pTerm = &pTerm->pWC->a[pTerm->iParent];
    assert( pTerm!=0 );
    pTerm->nChild--;
    if( pTerm->nChild!=0 ) break;
    nLoop++;
  }
}

/*
................................................................................
    if( sqlite3CompareAffinity(p, zAff[i])==SQLITE_AFF_BLOB
     || sqlite3ExprNeedsNoAffinityChange(p, zAff[i])
    ){
      zAff[i] = SQLITE_AFF_BLOB;
    }
  }
}


/*
** pX is an expression of the form:  (vector) IN (SELECT ...)
** In other words, it is a vector IN operator with a SELECT clause on the
** LHS.  But not all terms in the vector are indexable and the terms might
** not be in the correct order for indexing.
**
** This routine makes a copy of the input pX expression and then adjusts
** the vector on the LHS with corresponding changes to the SELECT so that
** the vector contains only index terms and those terms are in the correct
** order.  The modified IN expression is returned.  The caller is responsible
** for deleting the returned expression.
**
** Example:
**
**    CREATE TABLE t1(a,b,c,d,e,f);
**    CREATE INDEX t1x1 ON t1(e,c);
**    SELECT * FROM t1 WHERE (a,b,c,d,e) IN (SELECT v,w,x,y,z FROM t2)
**                           \_______________________________________/
**                                     The pX expression
**
** Since only columns e and c can be used with the index, in that order,
** the modified IN expression that is returned will be:
**
**        (e,c) IN (SELECT z,x FROM t2)
**
** The reduced pX is different from the original (obviously) and thus is
** only used for indexing, to improve performance.  The original unaltered
** IN expression must also be run on each output row for correctness.
*/
static Expr *removeUnindexableInClauseTerms(
  Parse *pParse,        /* The parsing context */
  int iEq,              /* Look at loop terms starting here */
  WhereLoop *pLoop,     /* The current loop */
  Expr *pX              /* The IN expression to be reduced */
){
  sqlite3 *db = pParse->db;
  Expr *pNew = sqlite3ExprDup(db, pX, 0);
  if( db->mallocFailed==0 ){
    ExprList *pOrigRhs = pNew->x.pSelect->pEList;  /* Original unmodified RHS */
    ExprList *pOrigLhs = pNew->pLeft->x.pList;     /* Original unmodified LHS */
    ExprList *pRhs = 0;         /* New RHS after modifications */
    ExprList *pLhs = 0;         /* New LHS after mods */
    int i;                      /* Loop counter */
    Select *pSelect;            /* Pointer to the SELECT on the RHS */

    for(i=iEq; i<pLoop->nLTerm; i++){
      if( pLoop->aLTerm[i]->pExpr==pX ){
        int iField = pLoop->aLTerm[i]->iField - 1;
        assert( pOrigRhs->a[iField].pExpr!=0 );
        pRhs = sqlite3ExprListAppend(pParse, pRhs, pOrigRhs->a[iField].pExpr);
        pOrigRhs->a[iField].pExpr = 0;
        assert( pOrigLhs->a[iField].pExpr!=0 );
        pLhs = sqlite3ExprListAppend(pParse, pLhs, pOrigLhs->a[iField].pExpr);
        pOrigLhs->a[iField].pExpr = 0;
      }
    }
    sqlite3ExprListDelete(db, pOrigRhs);
    sqlite3ExprListDelete(db, pOrigLhs);
    pNew->pLeft->x.pList = pLhs;
    pNew->x.pSelect->pEList = pRhs;
    if( pLhs && pLhs->nExpr==1 ){
      /* Take care here not to generate a TK_VECTOR containing only a
      ** single value. Since the parser never creates such a vector, some
      ** of the subroutines do not handle this case.  */
      Expr *p = pLhs->a[0].pExpr;
      pLhs->a[0].pExpr = 0;
      sqlite3ExprDelete(db, pNew->pLeft);
      pNew->pLeft = p;
    }
    pSelect = pNew->x.pSelect;
    if( pSelect->pOrderBy ){
      /* If the SELECT statement has an ORDER BY clause, zero the 
      ** iOrderByCol variables. These are set to non-zero when an 
      ** ORDER BY term exactly matches one of the terms of the 
      ** result-set. Since the result-set of the SELECT statement may
      ** have been modified or reordered, these variables are no longer 
      ** set correctly.  Since setting them is just an optimization, 
      ** it's easiest just to zero them here.  */
      ExprList *pOrderBy = pSelect->pOrderBy;
      for(i=0; i<pOrderBy->nExpr; i++){
        pOrderBy->a[i].u.x.iOrderByCol = 0;
      }
    }

#if 0
    printf("For indexing, change the IN expr:\n");
    sqlite3TreeViewExpr(0, pX, 0);
    printf("Into:\n");
    sqlite3TreeViewExpr(0, pNew, 0);
#endif
  }
  return pNew;
}


/*
** Generate code for a single equality term of the WHERE clause.  An equality
** term can be either X=expr or X IN (...).   pTerm is the term to be 
** coded.
**
** The current value for the constraint is left in a register, the index
................................................................................
    for(i=0; i<iEq; i++){
      if( pLoop->aLTerm[i] && pLoop->aLTerm[i]->pExpr==pX ){
        disableTerm(pLevel, pTerm);
        return iTarget;
      }
    }
    for(i=iEq;i<pLoop->nLTerm; i++){
      assert( pLoop->aLTerm[i]!=0 );
      if( pLoop->aLTerm[i]->pExpr==pX ) nEq++;
    }

    if( (pX->flags & EP_xIsSelect)==0 || pX->x.pSelect->pEList->nExpr==1 ){
      eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, 0);
    }else{

      sqlite3 *db = pParse->db;





      pX = removeUnindexableInClauseTerms(pParse, iEq, pLoop, pX);











      if( !db->mallocFailed ){























        aiMap = (int*)sqlite3DbMallocZero(pParse->db, sizeof(int)*nEq);




        eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, aiMap);





        pTerm->pExpr->iTable = pX->iTable;
      }


      sqlite3ExprDelete(db, pX);
      pX = pTerm->pExpr;
    }

    if( eType==IN_INDEX_INDEX_DESC ){
      testcase( bRev );
      bRev = !bRev;
    }
    iTab = pX->iTable;
................................................................................
      if( sqlite3ExprIsVector(pRight)==0 ){
        disableTerm(pLevel, pRangeEnd);
      }else{
        endEq = 1;
      }
    }else if( bStopAtNull ){
      sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq);
      sqlite3ExprCacheRemove(pParse, regBase+nEq, 1);
      endEq = 0;
      nConstraint++;
    }
    sqlite3DbFree(db, zStartAff);
    sqlite3DbFree(db, zEndAff);

    /* Top of the loop body */
................................................................................
  Bitmask extraRight = 0;          /* Extra dependencies on LEFT JOIN */
  Expr *pStr1 = 0;                 /* RHS of LIKE/GLOB operator */
  int isComplete = 0;              /* RHS of LIKE/GLOB ends with wildcard */
  int noCase = 0;                  /* uppercase equivalent to lowercase */
  int op;                          /* Top-level operator.  pExpr->op */
  Parse *pParse = pWInfo->pParse;  /* Parsing context */
  sqlite3 *db = pParse->db;        /* Database connection */
  unsigned char eOp2 = 0;          /* op2 value for LIKE/REGEXP/GLOB */
  int nLeft;                       /* Number of elements on left side vector */

  if( db->mallocFailed ){
    return;
  }
  pTerm = &pWC->a[idxTerm];
  pMaskSet = &pWInfo->sMaskSet;
................................................................................
  ** not normally optimized for ordinary tables.  In other words, OP
  ** is one of MATCH, LIKE, GLOB, REGEXP, !=, IS, IS NOT, or NOT NULL.
  ** This information is used by the xBestIndex methods of
  ** virtual tables.  The native query optimizer does not attempt
  ** to do anything with MATCH functions.
  */
  if( pWC->op==TK_AND ){
    Expr *pRight = 0, *pLeft = 0;
    int res = isAuxiliaryVtabOperator(pExpr, &eOp2, &pLeft, &pRight);
    while( res-- > 0 ){
      int idxNew;
      WhereTerm *pNewTerm;
      Bitmask prereqColumn, prereqExpr;

      prereqExpr = sqlite3WhereExprUsage(pMaskSet, pRight);
................................................................................
** generating the code that loops through a table looking for applicable
** rows.  Indices are selected and used to speed the search when doing
** so is applicable.  Because this module is responsible for selecting
** indices, you might also think of this module as the "query optimizer".
*/
/* #include "sqliteInt.h" */
/* #include "whereInt.h" */

/*
** Extra information appended to the end of sqlite3_index_info but not
** visible to the xBestIndex function, at least not directly.  The
** sqlite3_vtab_collation() interface knows how to reach it, however.
**
** This object is not an API and can be changed from one release to the
** next.  As long as allocateIndexInfo() and sqlite3_vtab_collation()
** agree on the structure, all will be well.
*/
typedef struct HiddenIndexInfo HiddenIndexInfo;
struct HiddenIndexInfo {
  WhereClause *pWC;   /* The Where clause being analyzed */
  Parse *pParse;      /* The parsing context */
};

/* Forward declaration of methods */
static int whereLoopResize(sqlite3*, WhereLoop*, int);

/* Test variable that can be set to enable WHERE tracing */
#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG)
/***/ int sqlite3WhereTrace = 0;
................................................................................
#ifndef SQLITE_OMIT_VIRTUALTABLE
/*
** Allocate and populate an sqlite3_index_info structure. It is the 
** responsibility of the caller to eventually release the structure
** by passing the pointer returned by this function to sqlite3_free().
*/
static sqlite3_index_info *allocateIndexInfo(
  Parse *pParse,                  /* The parsing context */
  WhereClause *pWC,               /* The WHERE clause being analyzed */
  Bitmask mUnusable,              /* Ignore terms with these prereqs */
  struct SrcList_item *pSrc,      /* The FROM clause term that is the vtab */
  ExprList *pOrderBy,             /* The ORDER BY clause */
  u16 *pmNoOmit                   /* Mask of terms not to omit */
){
  int i, j;
  int nTerm;
  struct sqlite3_index_constraint *pIdxCons;
  struct sqlite3_index_orderby *pIdxOrderBy;
  struct sqlite3_index_constraint_usage *pUsage;
  struct HiddenIndexInfo *pHidden;
  WhereTerm *pTerm;
  int nOrderBy;
  sqlite3_index_info *pIdxInfo;
  u16 mNoOmit = 0;

  /* Count the number of possible WHERE clause constraints referring
  ** to this virtual table */
................................................................................
    }
  }

  /* Allocate the sqlite3_index_info structure
  */
  pIdxInfo = sqlite3DbMallocZero(pParse->db, sizeof(*pIdxInfo)
                           + (sizeof(*pIdxCons) + sizeof(*pUsage))*nTerm
                           + sizeof(*pIdxOrderBy)*nOrderBy + sizeof(*pHidden) );
  if( pIdxInfo==0 ){
    sqlite3ErrorMsg(pParse, "out of memory");
    return 0;
  }

  /* Initialize the structure.  The sqlite3_index_info structure contains
  ** many fields that are declared "const" to prevent xBestIndex from
  ** changing them.  We have to do some funky casting in order to
  ** initialize those fields.
  */
  pHidden = (struct HiddenIndexInfo*)&pIdxInfo[1];
  pIdxCons = (struct sqlite3_index_constraint*)&pHidden[1];
  pIdxOrderBy = (struct sqlite3_index_orderby*)&pIdxCons[nTerm];
  pUsage = (struct sqlite3_index_constraint_usage*)&pIdxOrderBy[nOrderBy];
  *(int*)&pIdxInfo->nConstraint = nTerm;
  *(int*)&pIdxInfo->nOrderBy = nOrderBy;
  *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint = pIdxCons;
  *(struct sqlite3_index_orderby**)&pIdxInfo->aOrderBy = pIdxOrderBy;
  *(struct sqlite3_index_constraint_usage**)&pIdxInfo->aConstraintUsage =
                                                                   pUsage;

  pHidden->pWC = pWC;
  pHidden->pParse = pParse;
  for(i=j=0, pTerm=pWC->a; i<pWC->nTerm; i++, pTerm++){
    u16 op;
    if( pTerm->leftCursor != pSrc->iCursor ) continue;
    if( pTerm->prereqRight & mUnusable ) continue;
    assert( IsPowerOfTwo(pTerm->eOperator & ~WO_EQUIV) );
    testcase( pTerm->eOperator & WO_IN );
    testcase( pTerm->eOperator & WO_IS );
................................................................................
  sqlite3DbFreeNN(db, p);
}

/*
** Free a WhereInfo structure
*/
static void whereInfoFree(sqlite3 *db, WhereInfo *pWInfo){

  int i;
  assert( pWInfo!=0 );
  for(i=0; i<pWInfo->nLevel; i++){
    WhereLevel *pLevel = &pWInfo->a[i];
    if( pLevel->pWLoop && (pLevel->pWLoop->wsFlags & WHERE_IN_ABLE) ){
      sqlite3DbFree(db, pLevel->u.in.aInLoop);
    }
  }
  sqlite3WhereClauseClear(&pWInfo->sWC);
  while( pWInfo->pLoops ){
    WhereLoop *p = pWInfo->pLoops;
    pWInfo->pLoops = p->pNextLoop;
    whereLoopDelete(db, p);
  }
  sqlite3DbFreeNN(db, pWInfo);

}

/*
** Return TRUE if all of the following are true:
**
**   (1)  X has the same or lower cost that Y
**   (2)  X uses fewer WHERE clause terms than Y
................................................................................
                          ** changes "x IN (?)" into "x=?". */
      }
    }else if( eOp & (WO_EQ|WO_IS) ){
      int iCol = pProbe->aiColumn[saved_nEq];
      pNew->wsFlags |= WHERE_COLUMN_EQ;
      assert( saved_nEq==pNew->u.btree.nEq );
      if( iCol==XN_ROWID 
       || (iCol>=0 && nInMul==0 && saved_nEq==pProbe->nKeyCol-1)
      ){
        if( iCol>=0 && pProbe->uniqNotNull==0 ){
          pNew->wsFlags |= WHERE_UNQ_WANTED;
        }else{
          pNew->wsFlags |= WHERE_ONEROW;
        }
      }
................................................................................
        pNew->prereq = mPrereq | pTerm->prereqRight;
        rc = whereLoopInsert(pBuilder, pNew);
      }
    }
  }
#endif /* SQLITE_OMIT_AUTOMATIC_INDEX */

  /* Loop over all indices. If there was an INDEXED BY clause, then only 
  ** consider index pProbe.  */
  for(; rc==SQLITE_OK && pProbe; 
      pProbe=(pSrc->pIBIndex ? 0 : pProbe->pNext), iSortIdx++
  ){
    if( pProbe->pPartIdxWhere!=0
     && !whereUsablePartialIndex(pSrc->iCursor, pWC, pProbe->pPartIdxWhere) ){
      testcase( pNew->iTab!=pSrc->iCursor );  /* See ticket [98d973b8f5] */
      continue;  /* Partial index inappropriate for this query */
    }
    if( pProbe->bNoQuery ) continue;
    rSize = pProbe->aiRowLogEst[0];
    pNew->u.btree.nEq = 0;
    pNew->u.btree.nBtm = 0;
    pNew->u.btree.nTop = 0;
    pNew->nSkip = 0;
    pNew->nLTerm = 0;
    pNew->iSortIdx = 0;
................................................................................
      pTab->tabFlags |= TF_StatsUsed;
    }
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    sqlite3Stat4ProbeFree(pBuilder->pRec);
    pBuilder->nRecValid = 0;
    pBuilder->pRec = 0;
#endif




  }
  return rc;
}

#ifndef SQLITE_OMIT_VIRTUALTABLE

/*
................................................................................
  WHERETRACE(0xffff, ("  bIn=%d prereqIn=%04llx prereqOut=%04llx\n",
                      *pbIn, (sqlite3_uint64)mPrereq,
                      (sqlite3_uint64)(pNew->prereq & ~mPrereq)));

  return rc;
}

/*
** If this function is invoked from within an xBestIndex() callback, it
** returns a pointer to a buffer containing the name of the collation
** sequence associated with element iCons of the sqlite3_index_info.aConstraint
** array. Or, if iCons is out of range or there is no active xBestIndex
** call, return NULL.
*/
SQLITE_API const char *sqlite3_vtab_collation(sqlite3_index_info *pIdxInfo, int iCons){
  HiddenIndexInfo *pHidden = (HiddenIndexInfo*)&pIdxInfo[1];
  const char *zRet = 0;
  if( iCons>=0 && iCons<pIdxInfo->nConstraint ){
    CollSeq *pC = 0;
    int iTerm = pIdxInfo->aConstraint[iCons].iTermOffset;
    Expr *pX = pHidden->pWC->a[iTerm].pExpr;
    if( pX->pLeft ){
      pC = sqlite3BinaryCompareCollSeq(pHidden->pParse, pX->pLeft, pX->pRight);
    }
    zRet = (pC ? pC->zName : "BINARY");
  }
  return zRet;
}

/*
** Add all WhereLoop objects for a table of the join identified by
** pBuilder->pNew->iTab.  That table is guaranteed to be a virtual table.
**
** If there are no LEFT or CROSS JOIN joins in the query, both mPrereq and
** mUnusable are set to 0. Otherwise, mPrereq is a mask of all FROM clause
................................................................................
    }
    sqlite3DebugPrintf("\n");
    for(ii=0; ii<pWInfo->nLevel; ii++){
      whereLoopPrint(pWInfo->a[ii].pWLoop, sWLB.pWC);
    }
  }
#endif

  /* Attempt to omit tables from the join that do not affect the result.
  ** For a table to not affect the result, the following must be true:
  **
  **   1) The query must not be an aggregate.
  **   2) The table must be the RHS of a LEFT JOIN.
  **   3) Either the query must be DISTINCT, or else the ON or USING clause
  **      must contain a constraint that limits the scan of the table to 
  **      at most a single row.
  **   4) The table must not be referenced by any part of the query apart
  **      from its own USING or ON clause.
  **
  ** For example, given:
  **
  **     CREATE TABLE t1(ipk INTEGER PRIMARY KEY, v1);
  **     CREATE TABLE t2(ipk INTEGER PRIMARY KEY, v2);
  **     CREATE TABLE t3(ipk INTEGER PRIMARY KEY, v3);
  **
  ** then table t2 can be omitted from the following:
  **
  **     SELECT v1, v3 FROM t1 
  **       LEFT JOIN t2 USING (t1.ipk=t2.ipk)
  **       LEFT JOIN t3 USING (t1.ipk=t3.ipk)
  **
  ** or from:
  **
  **     SELECT DISTINCT v1, v3 FROM t1 
  **       LEFT JOIN t2
  **       LEFT JOIN t3 USING (t1.ipk=t3.ipk)
  */
  notReady = ~(Bitmask)0;
  if( pWInfo->nLevel>=2
   && pResultSet!=0               /* guarantees condition (1) above */
   && OptimizationEnabled(db, SQLITE_OmitNoopJoin)
  ){
    int i;
    Bitmask tabUsed = sqlite3WhereExprListUsage(pMaskSet, pResultSet);
    if( sWLB.pOrderBy ){
      tabUsed |= sqlite3WhereExprListUsage(pMaskSet, sWLB.pOrderBy);
    }
    for(i=pWInfo->nLevel-1; i>=1; i--){
      WhereTerm *pTerm, *pEnd;
      struct SrcList_item *pItem;
      pLoop = pWInfo->a[i].pWLoop;
      pItem = &pWInfo->pTabList->a[pLoop->iTab];
      if( (pItem->fg.jointype & JT_LEFT)==0 ) continue;
      if( (wctrlFlags & WHERE_WANT_DISTINCT)==0
       && (pLoop->wsFlags & WHERE_ONEROW)==0
      ){
        continue;
      }
      if( (tabUsed & pLoop->maskSelf)!=0 ) continue;
      pEnd = sWLB.pWC->a + sWLB.pWC->nTerm;
      for(pTerm=sWLB.pWC->a; pTerm<pEnd; pTerm++){
        if( (pTerm->prereqAll & pLoop->maskSelf)!=0 ){
          if( !ExprHasProperty(pTerm->pExpr, EP_FromJoin)
           || pTerm->pExpr->iRightJoinTable!=pItem->iCursor
          ){
            break;
          }
        }
      }
      if( pTerm<pEnd ) continue;
      WHERETRACE(0xffff, ("-> drop loop %c not used\n", pLoop->cId));
      notReady &= ~pLoop->maskSelf;
      for(pTerm=sWLB.pWC->a; pTerm<pEnd; pTerm++){
        if( (pTerm->prereqAll & pLoop->maskSelf)!=0 ){
          pTerm->wtFlags |= TERM_CODED;
        }
      }
      if( i!=pWInfo->nLevel-1 ){
        int nByte = (pWInfo->nLevel-1-i) * sizeof(WhereLevel);
        memmove(&pWInfo->a[i], &pWInfo->a[i+1], nByte);
      }
      pWInfo->nLevel--;
      nTabList--;
    }
  }
  WHERETRACE(0xffff,("*** Optimizer Finished ***\n"));
  pWInfo->pParse->nQueryLoop += pWInfo->nRowOut;

................................................................................
  pWInfo->iTop = sqlite3VdbeCurrentAddr(v);
  if( db->mallocFailed ) goto whereBeginError;

  /* Generate the code to do the search.  Each iteration of the for
  ** loop below generates code for a single nested loop of the VM
  ** program.
  */

  for(ii=0; ii<nTabList; ii++){
    int addrExplain;
    int wsFlags;
    pLevel = &pWInfo->a[ii];
    wsFlags = pLevel->pWLoop->wsFlags;
#ifndef SQLITE_OMIT_AUTOMATIC_INDEX
    if( (pLevel->pWLoop->wsFlags & WHERE_AUTO_INDEX)!=0 ){
................................................................................
    pLoop = pLevel->pWLoop;
    if( pLevel->op!=OP_Noop ){
#ifndef SQLITE_DISABLE_SKIPAHEAD_DISTINCT
      int addrSeek = 0;
      Index *pIdx;
      int n;
      if( pWInfo->eDistinct==WHERE_DISTINCT_ORDERED
       && i==pWInfo->nLevel-1  /* Ticket [ef9318757b152e3] 2017-10-21 */
       && (pLoop->wsFlags & WHERE_INDEXED)!=0
       && (pIdx = pLoop->u.btree.pIndex)->hasStat1
       && (n = pLoop->u.btree.nIdxCol)>0
       && pIdx->aiRowLogEst[n]>=36
      ){
        int r1 = pParse->nMem+1;
        int j, op;
................................................................................
    }
#endif
    if( pLevel->iLeftJoin ){
      int ws = pLoop->wsFlags;
      addr = sqlite3VdbeAddOp1(v, OP_IfPos, pLevel->iLeftJoin); VdbeCoverage(v);
      assert( (ws & WHERE_IDX_ONLY)==0 || (ws & WHERE_INDEXED)!=0 );
      if( (ws & WHERE_IDX_ONLY)==0 ){
        assert( pLevel->iTabCur==pTabList->a[pLevel->iFrom].iCursor );
        sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iTabCur);
      }
      if( (ws & WHERE_INDEXED) 
       || ((ws & WHERE_MULTI_OR) && pLevel->u.pCovidx) 
      ){
        sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iIdxCur);
      }
      if( pLevel->op==OP_Return ){
................................................................................
     && !db->mallocFailed
    ){
      last = sqlite3VdbeCurrentAddr(v);
      k = pLevel->addrBody;
      pOp = sqlite3VdbeGetOp(v, k);
      for(; k<last; k++, pOp++){
        if( pOp->p1!=pLevel->iTabCur ) continue;
        if( pOp->opcode==OP_Column
#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
         || pOp->opcode==OP_Offset
#endif
        ){
          int x = pOp->p2;
          assert( pIdx->pTable==pTab );
          if( !HasRowid(pTab) ){
            Index *pPk = sqlite3PrimaryKeyIndex(pTab);
            x = pPk->aiColumn[x];
            assert( x>=0 );
          }
................................................................................

/*
** Alternative datatype for the argument to the malloc() routine passed
** into sqlite3ParserAlloc().  The default is size_t.
*/
#define YYMALLOCARGTYPE  u64










/*
** An instance of the following structure describes the event of a
** TRIGGER.  "a" is the event type, one of TK_UPDATE, TK_INSERT,
** TK_DELETE, or TK_INSTEAD.  If the event is of the form
**
**      UPDATE ON (a,b,c)
**
................................................................................
        cnt>mxSelect
      ){
        sqlite3ErrorMsg(pParse, "too many terms in compound SELECT");
      }
    }
  }










  /* Construct a new Expr object from a single identifier.  Use the
  ** new Expr to populate pOut.  Set the span of pOut to be the identifier
  ** that created the expression.
  */
  static Expr *tokenExpr(Parse *pParse, int op, Token t){
    Expr *p = sqlite3DbMallocRawNN(pParse->db, sizeof(Expr)+t.n+1);
    if( p ){
      memset(p, 0, sizeof(Expr));
      p->op = (u8)op;
      p->flags = EP_Leaf;
      p->iAgg = -1;
      p->u.zToken = (char*)&p[1];
................................................................................
        if( p->u.zToken[0]=='"' ) p->flags |= EP_DblQuoted;
        sqlite3Dequote(p->u.zToken);
      }
#if SQLITE_MAX_EXPR_DEPTH>0
      p->nHeight = 1;
#endif  
    }
    return p;


  }