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+<!DOCTYPE html>
+<html><head>
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<link href="../sqlite.css" rel="stylesheet">
+<title>SQLite Release 3.40.0 On 2022-11-16</title>
+<!-- path=../ -->
+</head>
+<body>
+<div class=nosearch>
+<a href="../index.html">
+<img class="logo" src="../images/sqlite370_banner.gif" alt="SQLite" border="0">
+</a>
+<div><!-- IE hack to prevent disappearing logo --></div>
+<div class="tagline desktoponly">
+Small. Fast. Reliable.<br>Choose any three.
+</div>
+<div class="menu mainmenu">
+<ul>
+<li><a href="../index.html">Home</a>
+<li class='mobileonly'><a href="javascript:void(0)" onclick='toggle_div("submenu")'>Menu</a>
+<li class='wideonly'><a href='../about.html'>About</a>
+<li class='desktoponly'><a href="../docs.html">Documentation</a>
+<li class='desktoponly'><a href="../download.html">Download</a>
+<li class='wideonly'><a href='../copyright.html'>License</a>
+<li class='desktoponly'><a href="../support.html">Support</a>
+<li class='desktoponly'><a href="../prosupport.html">Purchase</a>
+<li class='search' id='search_menubutton'>
+<a href="javascript:void(0)" onclick='toggle_search()'>Search</a>
+</ul>
+</div>
+<div class="menu submenu" id="submenu">
+<ul>
+<li><a href='../about.html'>About</a>
+<li><a href='../docs.html'>Documentation</a>
+<li><a href='../download.html'>Download</a>
+<li><a href='../support.html'>Support</a>
+<li><a href='../prosupport.html'>Purchase</a>
+</ul>
+</div>
+<div class="searchmenu" id="searchmenu">
+<form method="GET" action="../search">
+<select name="s" id="searchtype">
+<option value="d">Search Documentation</option>
+<option value="c">Search Changelog</option>
+</select>
+<input type="text" name="q" id="searchbox" value="">
+<input type="submit" value="Go">
+</form>
+</div>
+</div>
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+function toggle_search() {
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+document.getElementById("searchbox").focus()
+}, 30);
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+function div_off(nm){document.getElementById(nm).style.display="none";}
+window.onbeforeunload = function(e){div_off("submenu");}
+/* Disable the Search feature if we are not operating from CGI, since */
+/* Search is accomplished using CGI and will not work without it. */
+if( !location.origin || !location.origin.match || !location.origin.match(/http/) ){
+document.getElementById("search_menubutton").style.display = "none";
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+</script>
+<h2>SQLite Release 3.40.0 On 2022-11-16</h2><p><ol class='lessindent'>
+<li> Add support for compiling <a href="https://sqlite.org/wasm">SQLite to WASM</a>
+     and running it in web browsers.  NB:  The WASM build and its interfaces
+     are considered "beta" and are subject to minor changes if the need
+     arises.  We anticipate finalizing the interface for the next release.
+<li> Add the <a href="../recovery.html">recovery extension</a> that might be able to recover some content
+     from a corrupt database file.
+<li> Query planner enhancements:
+     <ol type="a">
+     <li> Recognize <a href="../queryplanner.html#covidx">covering indexes</a> on tables with more than 63 columns where
+          columns beyond the 63rd column are used in the query and/or are
+          referenced by the index.
+     <li> Extract the values of expressions contained within <a href="../expridx.html">expression indexes</a>
+          where practical, rather than recomputing the expression.
+     <li> The NOT NULL and IS NULL operators (and their equivalents) avoid
+          loading the content of large strings and BLOB values from disk.
+     <li> Avoid materializing a view on which a full scan is performed
+          exactly once.  Use and discard the rows of the view as they are computed.
+     <li> Allow flattening of a subquery that is the right-hand operand of
+          a LEFT JOIN in an aggregate query.
+     </ol>
+<li> A new typedef named <a href="../c3ref/filename.html">sqlite3_filename</a> is added and used to represent
+     the name of a database file.  Various interfaces are
+     modified to use the new typedef instead of "char*".  This interface
+     change should be fully backwards compatible, though it might cause
+     (harmless) compiler warnings when rebuilding some legacy applications.
+<li> Add the <a href="../c3ref/value_blob.html">sqlite3_value_encoding()</a> interface.
+<li> Security enhancement: <a href="../c3ref/c_dbconfig_defensive.html#sqlitedbconfigdefensive">SQLITE_DBCONFIG_DEFENSIVE</a> is augmented to prohibit
+     changing the <a href="../pragma.html#pragma_schema_version">schema_version</a>.  The schema_version
+     becomes read-only in defensive mode.
+<li> Enhancements to the <a href="../pragma.html#pragma_integrity_check">PRAGMA integrity_check</a> statement:
+     <ol type="a">
+     <li> Columns in non-STRICT tables with TEXT affinity should not contain numeric values.
+     <li> Columns in non-STRICT tables with NUMERIC affinity should not
+          contain TEXT values that could be converted into numbers.
+     <li> Verify that the rows of a <a href="../withoutrowid.html">WITHOUT ROWID</a> table are in the correct order.
+     </ol>
+<li> Enhance the <a href="../lang_vacuum.html#vacuuminto">VACUUM INTO</a> statement so that it honors the
+     <a href="../pragma.html#pragma_synchronous">PRAGMA synchronous</a> setting.
+<li> Enhance the <a href="../c3ref/strglob.html">sqlite3_strglob()</a> and <a href="../c3ref/strlike.html">sqlite3_strlike()</a> APIs so that they are able
+     to accept NULL pointers for their string parameters and still generate a sensible
+     result.
+<li> Provide the new <a href="../compile.html#max_allocation_size">SQLITE_MAX_ALLOCATION_SIZE</a> compile-time option for limiting
+     the size of memory allocations.
+<li> Change the algorithm used by SQLite's built-in pseudo-random number generator (PRNG)
+     from RC4 to Chacha20.
+<li> Allow two or more indexes to have the same name as long as they are all in
+     separate schemas.
+<li> Miscellaneous performance optimizations result in about 1% fewer CPU cycles
+     used on typical workloads.
+<p><b>Hashes:</b>
+<li>SQLITE_SOURCE_ID: 2022-11-16 12:10:08 89c459e766ea7e9165d0beeb124708b955a4950d0f4792f457465d71b158d318
+<li>SHA3-256 for sqlite3.c: ab8da6bc754642989e67d581f26683dc705b068cea671970f0a7d32cfacbad19
+
+</ol></p>
+
+      <p>A <a href="../changes.html">complete list of SQLite releases</a>
+      in a single page and a <a href="../chronology.html">chronology</a> are both also available.  
+      A detailed history of every
+      check-in is available at
+      <a href="http://www.sqlite.org/src/timeline">
+      SQLite version control site</a>.</p>
+    
+