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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 3.8.8 On 2015-01-16</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);
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+w.style.display = "none";
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+}
+function toggle_search() {
+var w = document.getElementById("searchmenu");
+if( w.style.display=="block" ){
+w.style.display = "none";
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+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';
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+}
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+antiRobotDefense();
+</script>
+<h2>SQLite Release 3.8.8 On 2015-01-16</h2><p><ol class='lessindent'>
+<p><b>New Features:</b>
+<li>Added the <a href="../pragma.html#pragma_data_version">PRAGMA data_version</a> command that can be used to determine if
+ a database file has been modified by another process.
+<li>Added the <a href="../c3ref/c_checkpoint_full.html">SQLITE_CHECKPOINT_TRUNCATE</a> option to the
+ <a href="../c3ref/wal_checkpoint_v2.html">sqlite3_wal_checkpoint_v2()</a> interface, with corresponding enhancements
+ to <a href="../pragma.html#pragma_wal_checkpoint">PRAGMA wal_checkpoint</a>.
+<li>Added the <a href="../c3ref/stmt_scanstatus.html">sqlite3_stmt_scanstatus()</a> interface, available only when
+ compiled with <a href="../compile.html#enable_stmt_scanstatus">SQLITE_ENABLE_STMT_SCANSTATUS</a>.
+<li>The <a href="../c3ref/table_column_metadata.html">sqlite3_table_column_metadata()</a> is enhanced to work correctly on
+ <a href="../withoutrowid.html">WITHOUT ROWID</a> tables and to check for the existence of a
+ a table if the column name parameter is NULL. The interface is now
+ also included in the build by default, without requiring
+ the <a href="../compile.html#enable_column_metadata">SQLITE_ENABLE_COLUMN_METADATA</a> compile-time option.
+<li>Added the <a href="../compile.html#enable_api_armor">SQLITE_ENABLE_API_ARMOR</a> compile-time option.
+<li>Added the <a href="../compile.html#reverse_unordered_selects">SQLITE_REVERSE_UNORDERED_SELECTS</a> compile-time option.
+<li>Added the <a href="../compile.html#sorter_pmasz">SQLITE_SORTER_PMASZ</a> compile-time option and <a href="../c3ref/c_config_covering_index_scan.html#sqliteconfigpmasz">SQLITE_CONFIG_PMASZ</a>
+ start-time option.
+<li>Added the <a href="../c3ref/c_config_covering_index_scan.html#sqliteconfigpcachehdrsz">SQLITE_CONFIG_PCACHE_HDRSZ</a> option to <a href="../c3ref/config.html">sqlite3_config()</a>
+ which makes it easier for applications to determine the appropriate
+ amount of memory for use with <a href="../c3ref/c_config_covering_index_scan.html#sqliteconfigpagecache">SQLITE_CONFIG_PAGECACHE</a>.
+<li>The number of rows in a <a href="../lang_select.html#values">VALUES clause</a> is no longer limited by
+ <a href="../c3ref/c_limit_attached.html#sqlitelimitcompoundselect">SQLITE_LIMIT_COMPOUND_SELECT</a>.
+<li>Added the <a href="https://www.sqlite.org/src/artifact/f971962e92ebb8b0">eval.c</a>
+ <a href="../loadext.html">loadable extension</a> that implements an eval() SQL function that will recursively
+ evaluate SQL.
+<p><b>Performance Enhancements:</b>
+<li>Reduce the number of memcpy() operations involved in balancing a b-tree,
+ for 3.2% overall performance boost.
+<li>Improvements to cost estimates for the <a href="../optoverview.html#skipscan">skip-scan optimization</a>.
+<li>The <a href="../optoverview.html#autoindex">automatic indexing</a> optimization is now capable of generating
+ a <a href="../partialindex.html">partial index</a> if that is appropriate.
+<p><b>Bug fixes:</b>
+<li>Ensure durability following a power loss with
+ "PRAGMA journal_mode=TRUNCATE" by calling fsync() right after truncating
+ the journal file.
+<li>The query planner now recognizes that any column in the right-hand
+ table of a LEFT JOIN can be NULL, even if that column has a NOT NULL
+ constraint. Avoid trying to optimize out NULL tests in those cases.
+ Fix for ticket
+ <a href="https://www.sqlite.org/src/info/6f2222d550f5b0ee7ed">6f2222d550f5b0ee7ed</a>.
+<li>Make sure ORDER BY puts rows in ascending order even if the DISTINCT
+ operator is implemented using a descending index. Fix for ticket
+ <a href="https://www.sqlite.org/src/info/c5ea805691bfc4204b1cb9e">c5ea805691bfc4204b1cb9e</a>.
+<li>Fix data races that might occur under stress when running with many threads
+ in <a href="../sharedcache.html">shared cache mode</a> where some of the threads are opening and
+ closing connections.
+<li>Fix obscure crash bugs found by
+ <a href="http://lcamtuf.coredump.cx/afl/">american fuzzy lop</a>. Ticket
+ <a href="https://www.sqlite.org/src/info/a59ae93ee990a55">a59ae93ee990a55</a>.
+<li>Work around a GCC optimizer bug (for gcc 4.2.1 on MacOS 10.7) that caused the
+ <a href="../rtree.html">R-Tree extension</a> to compute incorrect results when compiled with -O3.
+<p><b>Other changes:</b>
+<li>Disable the use of the strchrnul() C-library routine unless it is
+ specifically enabled using the -DHAVE_STRCHRNULL compile-time option.
+<li>Improvements to the effectiveness and accuracy of the
+ <a href="../lang_corefunc.html#likelihood">likelihood()</a>, <a href="../lang_corefunc.html#likely">likely()</a>, and <a href="../lang_corefunc.html#unlikely">unlikely()</a> SQL hint functions.
+
+<li>SQLITE_SOURCE_ID: "2015-01-16 12:08:06 7d68a42face3ab14ed88407d4331872f5b243fdf"
+<li>SHA1 for sqlite3.c: 91aea4cc722371d58aae3d22e94d2a4165276905
+
+</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>
+
+