<!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 3.9.1 On 2015-10-16</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> <script> function toggle_div(nm) { var w = document.getElementById(nm); if( w.style.display=="block" ){ w.style.display = "none"; }else{ w.style.display = "block"; } } 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'; }else{ x.style.display = ''; b.innerHTML='hide'; } return false; } var antiRobot = 0; function antiRobotGo(){ if( antiRobot!=3 ) return; antiRobot = 7; var j = document.getElementById("mtimelink"); if(j && j.hasAttribute("data-href")) j.href=j.getAttribute("data-href"); } function antiRobotDefense(){ document.body.onmousedown=function(){ antiRobot |= 2; antiRobotGo(); document.body.onmousedown=null; } document.body.onmousemove=function(){ antiRobot |= 2; antiRobotGo(); document.body.onmousemove=null; } setTimeout(function(){ antiRobot |= 1; antiRobotGo(); }, 100) antiRobotGo(); } antiRobotDefense(); </script> <h2>SQLite Release 3.9.1 On 2015-10-16</h2><p><b>Changes in version 3.9.0 (2015-10-14):</b></p> <p><ol class='lessindent'> <p><b>Policy Changes:</b> <li value='1'>The <a href="../versionnumbers.html">version numbering conventions</a> for SQLite are revised to use the emerging standard of <a href="http://semver.org/">semantic versioning</a>. <p><b>New Features And Enhancements:</b> <li>Added <a href="../json1.html">the json1 extension</a> module in the source tree, and in the <a href="../amalgamation.html">amalgamation</a>. Enable support using the <a href="../compile.html#enable_json1">SQLITE_ENABLE_JSON1</a> compile-time option. <li>Added <a href="../fts5.html">Full Text Search version 5 (FTS5)</a> to the <a href="../amalgamation.html">amalgamation</a>, enabled using <a href="../compile.html#enable_fts5">SQLITE_ENABLE_FTS5</a>. FTS5 will be considered "experimental" (subject to incompatible changes) for at least one more release cycle. <li>The <a href="../lang_createview.html">CREATE VIEW</a> statement now accepts an optional list of column names following the view name. <li>Added support for <a href="../expridx.html">indexes on expressions</a>. <li>Added support for <a href="../vtab.html#tabfunc2">table-valued functions</a> in the FROM clause of a <a href="../lang_select.html">SELECT</a> statement. <li>Added support for <a href="../vtab.html#epovtab">eponymous virtual tables</a>. <li>A <a href="../lang_createview.html">VIEW</a> may now reference undefined tables and functions when initially created. Missing tables and functions are reported when the VIEW is used in a query. <li>Added the <a href="../c3ref/value_subtype.html">sqlite3_value_subtype()</a> and <a href="../c3ref/result_subtype.html">sqlite3_result_subtype()</a> interfaced (used by <a href="../json1.html">the json1 extension</a>). <li>The query planner is now able to use <a href="../partialindex.html">partial indexes</a> that contain AND-connected terms in the WHERE clause. <li>The sqlite3_analyzer.exe utility is updated to report the depth of each btree and to show the average fanout for indexes and WITHOUT ROWID tables. <li>Enhanced the <a href="../dbstat.html">dbstat virtual table</a> so that it can be used as a <a href="../vtab.html#tabfunc2">table-valued function</a> where the argument is the schema to be analyzed. <p><b>Other changes:</b> <li>The <a href="../c3ref/aggregate_count.html">sqlite3_memory_alarm()</a> interface, which has been deprecated and undocumented for 8 years, is changed into a no-op. <p><b>Important fixes:</b> <li>Fixed a critical bug in the <a href="https://www.sqlite.org/see/doc/trunk/www/readme.wiki">SQLite Encryption Extension</a> that could cause the database to become unreadable and unrecoverable if a <a href="../lang_vacuum.html">VACUUM</a> command changed the size of the encryption nonce. <li>Added a memory barrier in the implementation of <a href="../c3ref/initialize.html">sqlite3_initialize()</a> to help ensure that it is thread-safe. <li>Fix the <a href="../optoverview.html#or_opt">OR optimization</a> so that it always ignores subplans that do not use an index. <li>Do not apply the WHERE-clause pushdown optimization on terms that originate in the ON or USING clause of a LEFT JOIN. Fix for ticket <a href="https://www.sqlite.org/src/info/c2a19d81652f40568c">c2a19d81652f40568c</a>. </ol> <p><b>Additional changes in version 3.9.1 (2015-10-16):</b></p> <p><ol class='lessindent'> <li value='18'>Fix <a href="../json1.html">the json1 extension</a> so that it does <u>not</u> recognize ASCII form-feed as a whitespace character, in order to comply with RFC-7159. Fix for ticket <a href="https://www.sqlite.org/src/info/57eec374ae1d0a1d">57eec374ae1d0a1d</a> <li>Add a few #ifdef and build script changes to address compilation issues that appeared after the 3.9.0 release. <li>SQLITE_SOURCE_ID: ""2015-10-16 17:31:12 767c1727fec4ce11b83f25b3f1bfcfe68a2c8b02" <li>SHA1 for sqlite3.c: 5e6d1873a32d82c2cf8581f143649940cac8ae49 </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>