Index: System.Data.SQLite/SQLiteDataReader.cs
==================================================================
--- System.Data.SQLite/SQLiteDataReader.cs
+++ System.Data.SQLite/SQLiteDataReader.cs
@@ -517,17 +517,18 @@
         VerifyForGet();
 
         if (_keyInfo == null)
             return null;
 
-        int iRowId = _keyInfo.GetRowIdIndex(
-            GetDatabaseName(i), GetTableName(i));
+        string databaseName = GetDatabaseName(i);
+        string tableName = GetTableName(i);
+        int iRowId = _keyInfo.GetRowIdIndex(databaseName, tableName);
 
-        if (iRowId == -1)
-            return null;
+        if (iRowId != -1)
+            return GetInt64(iRowId);
 
-        return GetInt64(iRowId);
+        return _keyInfo.GetRowId(databaseName, tableName);
     }
 
     /// <summary>
     /// Retrieves the column as a <see cref="SQLiteBlob" /> object.
     /// This will not work for tables that were created WITHOUT ROWID

Index: System.Data.SQLite/SQLiteKeyReader.cs
==================================================================
--- System.Data.SQLite/SQLiteKeyReader.cs
+++ System.Data.SQLite/SQLiteKeyReader.cs
@@ -363,10 +363,37 @@
             }
         }
 
         return -1;
     }
+
+    ///////////////////////////////////////////////////////////////////////////////////////////////
+
+    internal long? GetRowId(
+        string databaseName,
+        string tableName
+        )
+    {
+        if ((_keyInfo != null) &&
+            (databaseName != null) &&
+            (tableName != null))
+        {
+            for (int i = 0; i < _keyInfo.Length; i++)
+            {
+                if (_keyInfo[i].databaseName == databaseName &&
+                    _keyInfo[i].tableName == tableName)
+                {
+                    long rowid = _stmt._sql.GetRowIdForCursor(_stmt, _keyInfo[i].cursor);
+
+                    if (rowid != 0)
+                        return rowid;
+                }
+            }
+        }
+
+        return null;
+    }
 
     ///////////////////////////////////////////////////////////////////////////////////////////////
 
     #region IDisposable Members
     public void Dispose()

Index: Tests/basic.eagle
==================================================================
--- Tests/basic.eagle
+++ Tests/basic.eagle
@@ -4621,10 +4621,76 @@
       [getOtherCount Method_GetCachedXmlConfigFileName] >= 2}
 } -cleanup {
   moveSystemDataSQLiteDllConfig true
 } -constraints {eagle command.object monoBug28 System.Data.SQLite\
 buildConfiguration.Debug} -result {True}}
+
+###############################################################################
+
+runTest {test data-1.89 {using SQLiteBlob without rowid PK index} -setup {
+  setupDb [set fileName data-1.89.db]
+} -body {
+  sql execute $db {
+    CREATE TABLE t1 (x GUID UNIQUE NOT NULL, y BLOB NOT NULL);
+    INSERT INTO t1 (x, y) VALUES(
+      '12345678-0000-0000-0000-000000000000',
+      X'010203040506070809'
+    );
+    INSERT INTO t1 (x, y) VALUES(
+      '12345679-0000-0000-0000-000000000000',
+      X'0102030405060708090A0B0C0D0E0F101113'
+    );
+  }
+
+  set sql(1) { \
+    SELECT rowid, y FROM t1 \
+    WHERE x = '12345678-0000-0000-0000-000000000000'; \
+  }
+
+  set sql(2) { \
+    SELECT rowid, y FROM t1 \
+    WHERE x = '12345679-0000-0000-0000-000000000000'; \
+  }
+
+  set dataReader [sql execute -execute reader -format datareader \
+      -behavior +KeyInfo -alias $db $sql(1)]
+
+  while {[$dataReader Read]} {
+    set blob [object invoke -alias \
+        System.Data.SQLite.SQLiteBlob Create $dataReader 1 true]
+
+    lappend result [$blob GetCount]
+
+    $blob Close
+  }
+
+  $dataReader Close; unset dataReader
+
+  set dataReader [sql execute -execute reader -format datareader \
+      -behavior +KeyInfo -alias $db $sql(2)]
+
+  while {[$dataReader Read]} {
+    set blob [object invoke -alias \
+        System.Data.SQLite.SQLiteBlob Create $dataReader 1 true]
+
+    lappend result [$blob GetCount]
+
+    $blob Close
+  }
+
+  $dataReader Close; unset dataReader
+
+  set result
+} -cleanup {
+  unset -nocomplain blob
+  unset -nocomplain dataReader
+
+  cleanupDb $fileName
+
+  unset -nocomplain result sql db fileName
+} -constraints {eagle command.object monoBug28 command.sql compile.DATA SQLite\
+System.Data.SQLite} -result {9 18}}
 
 ###############################################################################
 
 reportSQLiteResources $test_channel