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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 3.18.0 On 2017-03-30</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="">
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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 3.18.0 On 2017-03-30</h2><p><ol class='lessindent'>
+<li>Added the <a href="../pragma.html#pragma_optimize">PRAGMA optimize</a> command
+<li>The SQLite version identifier returned by the <a href="../lang_corefunc.html#sqlite_source_id">sqlite_source_id()</a> SQL function
+    and the <a href="../c3ref/libversion.html">sqlite3_sourceid()</a> C API and found in the <a href="../c3ref/c_source_id.html">SQLITE_SOURCE_ID</a> macro is
+    now a 64-digit SHA3-256 hash instead of a 40-digit SHA1 hash.
+<li>Added the <a href="../json1.html#jpatch">json_patch()</a> SQL function to the <a href="../json1.html">JSON1 extension</a>.
+<li>Enhance the <a href="../optoverview.html#like_opt">LIKE optimization</a> so that it works for arbitrary expressions on
+    the left-hand side as long as the LIKE pattern on the right-hand side does not
+    begin with a digit or minus sign.
+<li>Added the <a href="../c3ref/set_last_insert_rowid.html">sqlite3_set_last_insert_rowid()</a> interface and use the new interface in
+    the <a href="../fts3.html">FTS3</a>, <a href="../fts3.html#fts4">FTS4</a>, and <a href="../fts5.html">FTS5</a> extensions to ensure that the <a href="../c3ref/last_insert_rowid.html">sqlite3_last_insert_rowid()</a>
+    interface always returns reasonable values.
+<li>Enhance <a href="../pragma.html#pragma_integrity_check">PRAGMA integrity_check</a> and <a href="../pragma.html#pragma_quick_check">PRAGMA quick_check</a> so that they verify
+    <a href="../lang_createtable.html#ckconst">CHECK constraints</a>.
+<li>Enhance the query plans for joins to detect empty tables early and
+    halt without doing unnecessary work.
+<li>Enhance the <a href="../c3ref/mprintf.html">sqlite3_mprintf()</a> family of interfaces and the <a href="../lang_corefunc.html#printf">printf SQL function</a>
+    to put comma separators at the thousands marks for integers, if the "," format modifier
+    is used in between the "%" and the "d" (example: "%,d").
+<li>Added the -D<a href="../compile.html#max_memory">SQLITE_MAX_MEMORY</a>=<i>N</i> compile-time option.
+<li>Added the <a href="../cli.html#sha3sum">.sha3sum dot-command</a> and the <a href="../cli.html#selftest">.selftest dot-command</a>
+    to the <a href="../cli.html">command-line shell</a>
+<li>Begin enforcing <a href="../c3ref/c_limit_attached.html#sqlitelimitvdbeop">SQLITE_LIMIT_VDBE_OP</a>. This can be used, for example, to prevent
+    excessively large prepared statements in systems that accept SQL queries from
+    untrusted users.
+<li>Various performance improvements.
+<p><b>Bug Fixes:</b>
+<li>Ensure that indexed expressions with collating sequences are handled correctly.
+    Fix for ticket <a href="https://www.sqlite.org/src/info/eb703ba7b50c1a5">eb703ba7b50c1a5</a>.
+<li>Fix a bug in the 'start of ...' modifiers for the <a href="../lang_datefunc.html">date and time functions</a>.
+    Ticket <a href="https://www.sqlite.org/src/info/6097cb92745327a1">6097cb92745327a1</a>
+<li>Fix a potential segfault in complex recursive triggers, resulting from a
+    bug in the OP_Once opcode introduced as part of a performance optimization in
+    version 3.15.0.
+    Ticket <a href="https://www.sqlite.org/src/info/06796225f59c057c">06796225f59c057c</a>
+<li>In the <a href="../rbu.html">RBU extension</a>, add extra sync operations to avoid the possibility of
+    corruption following a power failure.
+<li>The <a href="../c3ref/trace_v2.html">sqlite3_trace_v2()</a> output for nested SQL statements should always begin
+    with a "--" comment marker.
+<p><b>Hashes:</b>
+<li>SQLITE_SOURCE_ID: "2017-03-28 18:48:43 424a0d380332858ee55bdebc4af3789f74e70a2b3ba1cf29d84b9b4bcf3e2e37"
+<li>SHA3-256 for sqlite3.c: cbf322df1f76be57fb3be84f3da1fc71d1d3dfdb7e7c2757fb0ff630b3bc2e5d
+
+</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>
+    
+