System.Data.SQLite

<p>In this last example, the phonebook2 entry is only
updated if the validDate for the newly inserted value is
newer than the entry already in the table.  If the table already
contains an entry with the same name and a current validDate,
then the WHERE clause causes the DO UPDATE to become a no-op.

<h3>Limitations</h3>

<p>UPSERT does not currently work for <a href="vtab.html">virtual tables</a>.

          </td>
        </tr>
      </table>
    </div>
    <div id="mainSection">
    <div id="mainBody">
    <h1 class="heading">Version History</h1>
    <p><b>1.0.109.0 - August 15, 2018</b></p>
    <ul>
      <li>Updated to <a href="https://www.sqlite.org/releaselog/3_24_0.html">SQLite 3.24.0</a>.</li>
      <li>Updated to <a href="https://www.nuget.org/packages/EntityFramework/6.2.0">Entity Framework 6.2.0</a>.</li>
      <li>Do not attempt to initialize the logging subsystem more than once.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Prevent GetSchemaTable from throwing InvalidCastException. Fix for <a href="https://system.data.sqlite.org/index.html/info/baf42ee135">[baf42ee135]</a>.</li>
      <li>Add preliminary support for the .NET Framework 4.7.2.</li>
      <li>Add preliminary support for .NET Core 2.0 and the .NET Standard 2.0. Pursuant to <a href="https://system.data.sqlite.org/index.html/info/5c89cecd1b">[5c89cecd1b]</a>.</li>

destructor for client data pointer.  The module structure is what defines
the behavior of a virtual table.  The module structure looks like this:

</p><div class="codeblock"><pre>
struct sqlite3_module {
  int iVersion;
  int (*xCreate)(sqlite3*, void *pAux,
               int argc, char *const*argv,
               sqlite3_vtab **ppVTab,
               char **pzErr);
  int (*xConnect)(sqlite3*, void *pAux,
               int argc, char *const*argv,
               sqlite3_vtab **ppVTab,
               char **pzErr);
  int (*xBestIndex)(sqlite3_vtab *pVTab, sqlite3_index_info*);
  int (*xDisconnect)(sqlite3_vtab *pVTab);
  int (*xDestroy)(sqlite3_vtab *pVTab);
  int (*xOpen)(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor);
  int (*xClose)(sqlite3_vtab_cursor*);

</p><h1 id="virtual_table_methods"><span>2. </span>Virtual Table Methods</h1>

<a name="xcreate"></a>

<h2 id="the_xcreate_method"><span>2.1. </span>The xCreate Method</h2>

<div class="codeblock"><pre>int (*xCreate)(sqlite3 *db, void *pAux,
             int argc, char *const*argv,
             sqlite3_vtab **ppVTab,
             char **pzErr);
</pre></div>

<p>The xCreate method is called to create a new instance of a virtual table 
in response to a <a href="lang_createvtab.html">CREATE VIRTUAL TABLE</a> statement.
If the xCreate method is the same pointer as the <a href="vtab.html#xconnect">xConnect</a> method, then the

PRIMARY KEY column and a non-NULL xUpdate method.

<a name="xconnect"></a>

</p><h2 id="the_xconnect_method"><span>2.2. </span>The xConnect Method</h2>

<div class="codeblock"><pre>int (*xConnect)(sqlite3*, void *pAux,
             int argc, char *const*argv,
             sqlite3_vtab **ppVTab,
             char **pzErr);
</pre></div>

<p>The xConnect method is very similar to <a href="vtab.html#xcreate">xCreate</a>. 
It has the same parameters and constructs a new <a href="c3ref/vtab.html">sqlite3_vtab</a> structure 
just like xCreate. 

    /// native code.
    /// </summary>
    public interface ISQLiteNativeModule
    {
        /// <summary>
        /// <para><code>
        /// int (*xCreate)(sqlite3 *db, void *pAux,
        ///              int argc, char *const*argv,
        ///              sqlite3_vtab **ppVTab,
        ///              char **pzErr);
        /// </code></para>
        /// <para>
        /// The xCreate method is called to create a new instance of a virtual table 
        /// in response to a CREATE VIRTUAL TABLE statement.
        /// If the xCreate method is the same pointer as the xConnect method, then the

            );

        ///////////////////////////////////////////////////////////////////////

        /// <summary>
        /// <para><code>
        /// int (*xConnect)(sqlite3*, void *pAux,
        ///              int argc, char *const*argv,
        ///              sqlite3_vtab **ppVTab,
        ///              char **pzErr);
        /// </code></para>
        /// <para>
        /// The xConnect method is very similar to xCreate. 
        /// It has the same parameters and constructs a new sqlite3_vtab structure 
        /// just like xCreate. 

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title></title>
</head>
<body>
ADO.NET SQLite Data Provider<br />
Version 1.0.109.0 - August 15, 2018<br />
Using <a href="https://www.sqlite.org/releaselog/3_24_0.html">SQLite 3.24.0</a><br />Originally written by Robert Simpson<br />
Released to the public domain, use at your own risk!<br />
Official provider website:&nbsp;<a href="https://system.data.sqlite.org/">https://system.data.sqlite.org/</a><br />
Legacy versions:&nbsp;<a href="https://sourceforge.net/projects/sqlite-dotnet2/">https://sourceforge.net/projects/sqlite-dotnet2/</a><br />
<br />
The current development version can be downloaded from <a href="https://system.data.sqlite.org/index.html/timeline?y=ci">
https://system.data.sqlite.org/index.html/timeline?y=ci</a>

designed for robustness and maximum backward compatibility with previously
released versions of System.Data.SQLite.
</p>

<h2><b>Version History</b></h2>

<p>
    <b>1.0.109.0 - August 15, 2018</b>
</p>
<ul>
    <li>Updated to <a href="https://www.sqlite.org/releaselog/3_24_0.html">SQLite 3.24.0</a>.</li>
    <li>Updated to <a href="https://www.nuget.org/packages/EntityFramework/6.2.0">Entity Framework 6.2.0</a>.</li>
    <li>Do not attempt to initialize the logging subsystem more than once.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Prevent GetSchemaTable from throwing InvalidCastException. Fix for [baf42ee135].</li>
    <li>Add preliminary support for the .NET Framework 4.7.2.</li>

    Access to archived release packages will be granted on a case-by-case basis.
  </li>
</ul>

<div align="center"><h2><b>Version History</b></h2></div>

<p>
    <b>1.0.109.0 - August 15, 2018</b>
</p>
<ul>
    <li>Updated to [https://www.sqlite.org/releaselog/3_24_0.html|SQLite 3.24.0].</li>
    <li>Updated to [https://www.nuget.org/packages/EntityFramework/6.2.0|Entity Framework 6.2.0].</li>
    <li>Do not attempt to initialize the logging subsystem more than once.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Prevent GetSchemaTable from throwing InvalidCastException. Fix for [baf42ee135].</li>
    <li>Add preliminary support for the .NET Framework 4.7.2.</li>