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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 3.8.1 On 2013-10-17</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>
+<script>
+function toggle_div(nm) {
+var w = document.getElementById(nm);
+if( w.style.display=="block" ){
+w.style.display = "none";
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+w.style.display = "block";
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+}
+function toggle_search() {
+var w = document.getElementById("searchmenu");
+if( w.style.display=="block" ){
+w.style.display = "none";
+} else {
+w.style.display = "block";
+setTimeout(function(){
+document.getElementById("searchbox").focus()
+}, 30);
+}
+}
+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";
+}
+/* Used by the Hide/Show button beside syntax diagrams, to toggle the */
+function hideorshow(btn,obj){
+var x = document.getElementById(obj);
+var b = document.getElementById(btn);
+if( x.style.display!='none' ){
+x.style.display = 'none';
+b.innerHTML='show';
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+x.style.display = '';
+b.innerHTML='hide';
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+return false;
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+antiRobot |= 1;
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+}, 100)
+antiRobotGo();
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+antiRobotDefense();
+</script>
+<h2>SQLite Release 3.8.1 On 2013-10-17</h2><p><ol class='lessindent'>
+<li>Added the <a href="../lang_corefunc.html#unlikely">unlikely()</a> and <a href="../lang_corefunc.html#likelihood">likelihood()</a> SQL functions to be used
+ as hints to the query planner.
+<li>Enhancements to the query planner:
+<ol type='a'>
+ <li>Take into account the fact WHERE clause terms that cannot be used with indices
+ still probably reduce the number of output rows.
+ <li>Estimate the sizes of table and index rows and use the smallest applicable B-Tree
+ for full scans and "count(*)" operations.
+</ol>
+<li>Added the <a href="../pragma.html#pragma_soft_heap_limit">soft_heap_limit pragma</a>.
+<li>Added support for <a href="../compile.html#enable_stat4">SQLITE_ENABLE_STAT4</a>
+<li>Added support for "sz=NNN" parameters at the end of
+ <a href="../fileformat2.html#stat1tab">sqlite_stat1.stat</a> fields
+ used to specify the average length in bytes for table and index rows.
+<li>Avoid running foreign-key constraint checks on an UPDATE if none of the
+ modified columns are associated with foreign keys.
+<li>Added the <a href="../compile.html#minimum_file_descriptor">SQLITE_MINIMUM_FILE_DESCRIPTOR</a> compile-time option
+<li>Added the win32-longpath VFS on windows, permitting filenames up to 32K
+ characters in length.
+<li>The <a href="../lang_datefunc.html">Date And Time Functions</a> are enhanced so that the current time
+ (ex: julianday('now')) is always the same for multiple function invocations
+ within the same <a href="../c3ref/step.html">sqlite3_step()</a> call.
+<li>Add the "totype.c" extension, implementing the tointeger() and toreal()
+ SQL functions.
+<li><a href="../fts3.html#fts4">FTS4</a> queries are better able to make use of docid<$limit constraints to
+ limit the amount of I/O required.
+<li>Added the hidden <a href="../fts3.html#f4alid">fts4aux languageid column</a> to the <a href="../fts3.html#fts4aux">fts4aux</a> virtual table.
+<li>The <a href="../lang_vacuum.html">VACUUM</a> command packs the database about 1% tighter.
+<li>The sqlite3_analyzer utility program is updated to provide better descriptions
+ and to compute a more accurate estimate for "Non-sequential pages"
+<li>Refactor the implementation of PRAGMA statements to improve parsing performance.
+<li>The directory used to hold temporary files on unix can now be set using
+ the SQLITE_TMPDIR environment variable, which takes precedence over the
+ TMPDIR environment variable. The <a href="../c3ref/temp_directory.html">sqlite3_temp_directory</a> global variable
+ still has higher precedence than both environment variables, however.
+<li>Added the <a href="../pragma.html#pragma_stats">PRAGMA stats</a> statement.
+<li><b>Bug fix:</b> Return the correct answer for "SELECT count(*) FROM table" even if
+ there is a <a href="../partialindex.html">partial index</a> on the table. Ticket
+ <a href="http://www.sqlite.org/src/info/a5c8ed66ca">a5c8ed66ca</a>.
+
+<li>SQLITE_SOURCE_ID:
+ "2013-10-17 12:57:35 c78be6d786c19073b3a6730dfe3fb1be54f5657a"
+<li>SHA1 for sqlite3.c: 0a54d76566728c2ba96292a49b138e4f69a7c391
+
+</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>
+
+