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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 3.12.0 On 2016-03-29</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);
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+function toggle_search() {
+var w = document.getElementById("searchmenu");
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+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";
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+/* Used by the Hide/Show button beside syntax diagrams, to toggle the */
+function hideorshow(btn,obj){
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+</script>
+<h2>SQLite Release 3.12.0 On 2016-03-29</h2><p><ol class='lessindent'>
+<p><b>Potentially Disruptive Change:</b>
+<li>The <a href="../compile.html#default_page_size">SQLITE_DEFAULT_PAGE_SIZE</a> is increased from 1024 to 4096.
+ The <a href="../compile.html#default_cache_size">SQLITE_DEFAULT_CACHE_SIZE</a> is changed from 2000 to -2000 so
+ the same amount of cache memory is used by default.
+ See the application note on the
+ <a href="../pgszchng2016.html">version 3.12.0 page size change</a> for further information.
+<p><b>Performance enhancements:</b>
+<li>Enhancements to the <a href="../lemon.html">Lemon parser generator</a>
+ so that it creates a smaller and faster SQL parser.
+<li>Only create <a href="../tempfiles.html#superjrnl">master journal</a> files if two or more attached databases are all
+ modified, do not have <a href="../pragma.html#pragma_synchronous">PRAGMA synchronous</a> set to OFF, and
+ do not have the <a href="../pragma.html#pragma_journal_mode">journal_mode</a> set to OFF, MEMORY, or WAL.
+<li>Only create <a href="../tempfiles.html#stmtjrnl">statement journal</a> files when their size exceeds a threshold.
+ Otherwise the journal is held in memory and no I/O occurs. The threshold
+ can be configured at compile-time using <a href="../compile.html#stmtjrnl_spill">SQLITE_STMTJRNL_SPILL</a> or at
+ start-time using <a href="../c3ref/config.html">sqlite3_config</a>(<a href="../c3ref/c_config_covering_index_scan.html#sqliteconfigstmtjrnlspill">SQLITE_CONFIG_STMTJRNL_SPILL</a>).
+<li>The query planner is able to optimize IN operators on <a href="../vtab.html">virtual tables</a>
+ even if the <a href="../vtab.html#xbestindex">xBestIndex</a> method does not set the
+ sqlite3_index_constraint_usage.omit flag of the
+ virtual table column to the left of the IN operator.
+<li>The query planner now does a better job of optimizing <a href="../vtab.html">virtual table</a>
+ accesses in a 3-way or higher join where constraints on the virtual
+ table are split across two or more other tables of the join.
+<li>More efficient handling of <a href="../appfunc.html">application-defined SQL functions</a>, especially
+ in cases where the application defines hundreds or thousands of
+ custom functions.
+<li>The query planner considers the LIMIT clause when estimating the cost
+ of ORDER BY.
+<li>The configure script (on unix) automatically detects
+ pread() and pwrite() and sets compile-time options to use those OS
+ interfaces if they are available.
+<li>Reduce the amount of memory needed to hold the schema.
+<li>Other miscellaneous micro-optimizations for improved performance and reduced
+ memory usage.
+<p><b>New Features:</b>
+<li>Added the <a href="../c3ref/c_dbconfig_defensive.html#sqlitedbconfigenablefts3tokenizer">SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER</a> option to <a href="../c3ref/db_config.html">sqlite3_db_config()</a>
+ which allows the two-argument version of the <a href="../fts3.html#f3tknzr">fts3_tokenizer()</a> SQL function to
+ be enabled or disabled at run-time.
+<li>Added the <a href="https://www.sqlite.org/src/artifact/d7cc99350?ln=403-443">sqlite3rbu_bp_progress()</a>
+ interface to the <a href="../rbu.html">RBU</a> extension.
+<li>The <a href="../pragma.html#pragma_defer_foreign_keys">PRAGMA defer_foreign_keys=ON</a> statement now also disables
+ <a href="../foreignkeys.html#fk_actions">RESTRICT actions</a> on foreign key.
+<li>Added the <a href="../c3ref/system_errno.html">sqlite3_system_errno()</a> interface.
+<li>Added the <a href="../compile.html#default_synchronous">SQLITE_DEFAULT_SYNCHRONOUS</a> and <a href="../compile.html#default_wal_synchronous">SQLITE_DEFAULT_WAL_SYNCHRONOUS</a>
+ compile-time options. The <a href="../compile.html#default_synchronous">SQLITE_DEFAULT_SYNCHRONOUS</a> compile-time option
+ replaces the <a href="../compile.html#extra_durable">SQLITE_EXTRA_DURABLE</a> option, which is no longer supported.
+<li>Enhanced the ".stats" command in the <a href="../cli.html">command-line shell</a> to show more
+ information about I/O performance obtained from /proc, when available.
+<p><b>Bug fixes:</b>
+<li>Make sure the <a href="../c3ref/get_auxdata.html">sqlite3_set_auxdata()</a> values from multiple triggers
+ within a single statement do not interfere with one another.
+ Ticket <a href="https://www.sqlite.org/src/info/dc9b1c91">dc9b1c91</a>.
+<li>Fix the code generator for expressions of the form "x IN (SELECT...)" where
+ the SELECT statement on the RHS is a correlated subquery.
+ Ticket <a href="https://www.sqlite.org/src/info/5e3c886796e5512e">5e3c886796e5512e</a>.
+<li>Fix a harmless TSAN warning associated with the <a href="../c3ref/db_readonly.html">sqlite3_db_readonly()</a> interface.
+<p><b>Hashes:</b>
+<li>SQLITE_SOURCE_ID: "2016-03-29 10:14:15 e9bb4cf40f4971974a74468ef922bdee481c988b"
+<li>SHA1 for sqlite3.c: cba2be96d27cb51978cd4a200397a4ad178986eb
+
+</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="https://www.sqlite.org/src/timeline">
+ SQLite version control site</a>.</p>
+
+