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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 3.7.16 On 2013-03-18</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>
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+/* Disable the Search feature if we are not operating from CGI, since */
+/* Search is accomplished using CGI and will not work without it. */
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+</script>
+<h2>SQLite Release 3.7.16 On 2013-03-18</h2><p><ol class='lessindent'>
+<li>Added the <a href="../pragma.html#pragma_foreign_key_check">PRAGMA foreign_key_check</a> command.
+<li>Added new extended error codes for all SQLITE_CONSTRAINT errors
+<li>Added the SQLITE_READONLY_ROLLBACK extended error code for when a database
+ cannot be opened because it needs rollback recovery but is read-only.
+<li>Added SQL functions <a href="../lang_corefunc.html#unicode">unicode(A)</a> and <a href="../lang_corefunc.html#char">char(X1,...,XN)</a>.
+<li>Performance improvements for <a href="../pragma.html#pragma_incremental_vacuum">PRAGMA incremental_vacuum</a>, especially in
+ cases where the number of free pages is greater than what will fit on a
+ single trunk page of the freelist.
+<li>Improved optimization of queries containing aggregate min() or max().
+<li>Enhance virtual tables so that they can potentially use an index when
+ the WHERE clause contains the IN operator.
+<li>Allow indices to be used for sorting even if prior terms of the index
+ are constrained by IN operators in the WHERE clause.
+<li>Enhance the <a href="../pragma.html#pragma_table_info">PRAGMA table_info</a> command so that the "pk" column is an
+ increasing integer to show the order of columns in the primary key.
+<li>Enhance the query optimizer to exploit transitive join constraints.
+<li>Performance improvements in the query optimizer.
+<li>Allow the error message from <a href="../pragma.html#pragma_integrity_check">PRAGMA integrity_check</a> to be longer than
+ 20000 bytes.
+<li>Improved name resolution for deeply nested queries.
+<li>Added the test_regexp.c module as a demonstration of how to implement
+ the REGEXP operator.
+<li>Improved error messages in the <a href="../rtree.html">RTREE</a> extension.
+<li>Enhance the <a href="../cli.html">command-line shell</a> so that a non-zero argument to the
+ ".exit" command causes the shell to exit immediately without cleanly
+ shutting down the database connection.
+<li>Improved error messages for invalid boolean arguments to dot-commands
+ in the <a href="../cli.html">command-line shell</a>.
+<li>Improved error messages for "foreign key mismatch" showing the names of
+ the two tables involved.
+<li>Remove all uses of umask() in the unix VFS.
+<li>Added the <a href="../pragma.html#pragma_vdbe_addoptrace">PRAGMA vdbe_addoptrace</a> and <a href="../pragma.html#pragma_vdbe_debug">PRAGMA vdbe_debug</a> commands.
+<li>Change to use strncmp() or the equivalent instead of memcmp() when
+ comparing non-zero-terminated strings.
+<li>Update cygwin interfaces to omit deprecated API calls.
+<li>Enhance the <a href="../spellfix1.html">spellfix1</a> extension so that the edit distance cost table can
+ be changed at runtime by inserting a string like 'edit_cost_table=TABLE'
+ into the "command" field.
+
+<li>Bug fix: repair a long-standing problem that could cause incorrect query
+ results in a 3-way or larger join that compared INTEGER fields against TEXT
+ fields in two or more places.
+ Ticket <a href="http://www.sqlite.org/src/info/fc7bd6358f">fc7bd6358f</a>
+<li>Bug fix: Issue an error message if the 16-bit reference counter on a
+ view overflows due to an overly complex query.
+<li>Bug fix: Avoid leaking memory on LIMIT and OFFSET clauses in deeply
+ nested UNION ALL queries.
+<li>Bug fix: Make sure the schema is up-to-date prior to running pragmas
+ table_info, index_list, index_info, and foreign_key_list.
+
+<li>SQLITE_SOURCE_ID:
+ "2013-03-18 11:39:23 66d5f2b76750f3520eb7a495f6247206758f5b90"
+<li>SHA1 for sqlite3.c: 7308ab891ca1b2ebc596025cfe4dc36f1ee89cf6
+
+</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>
+
+