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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 3.8.7 On 2014-10-17</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>
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+<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">
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+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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+</script>
+<h2>SQLite Release 3.8.7 On 2014-10-17</h2><p><ol class='lessindent'>
+<p><b>Performance Enhancements:</b>
+<li>Many micro-optimizations result in 20.3% more work for the same number
+    of CPU cycles relative to the previous release.
+    The cumulative performance increase since <a href="../releaselog/3_8_0.html">version 3.8.0</a> is 61%.
+    (Measured using
+    <a href="http://valgrind.org/docs/manual/cg-manual.html">cachegrind</a> on the
+    <a href="https://www.sqlite.org/src/artifact/83f6b3318f7ee">speedtest1.c</a> workload on
+    Ubuntu 13.10 x64 with gcc 4.8.1 and -Os. Your performance may vary.)
+<li>The sorter can use auxiliary helper threads to increase real-time response.
+    This feature is off by default and may be
+    enabled using the <a href="../pragma.html#pragma_threads">PRAGMA threads</a> command or the <a href="../compile.html#default_worker_threads">SQLITE_DEFAULT_WORKER_THREADS</a>
+    compile-time option.
+<li>Enhance the <a href="../optoverview.html#skipscan">skip-scan</a> optimization so that it is able to skip index terms that
+    occur in the middle of the index, not just as the left-hand side of the index.
+<li>Improved optimization of <a href="../lang_expr.html#castexpr">CAST</a> operators.
+<li>Various improvements in how the query planner uses <a href="../fileformat2.html#stat4tab">sqlite_stat4</a>
+    information to estimate plan costs.
+<p><b>New Features:</b>
+<li>Added new interfaces with 64-bit length parameters:
+    <a href="../c3ref/free.html">sqlite3_malloc64()</a>,
+    <a href="../c3ref/free.html">sqlite3_realloc64()</a>,
+    <a href="../c3ref/bind_blob.html">sqlite3_bind_blob64()</a>,
+    <a href="../c3ref/result_blob.html">sqlite3_result_blob64()</a>,
+    <a href="../c3ref/bind_blob.html">sqlite3_bind_text64()</a>, and
+    <a href="../c3ref/result_blob.html">sqlite3_result_text64()</a>.
+<li>Added the new interface <a href="../c3ref/free.html">sqlite3_msize()</a> that returns the size of a memory allocation
+    obtained from <a href="../c3ref/free.html">sqlite3_malloc64()</a> and its variants.
+<li>Added the <a href="../c3ref/c_limit_attached.html#sqlitelimitworkerthreads">SQLITE_LIMIT_WORKER_THREADS</a> option to <a href="../c3ref/limit.html">sqlite3_limit()</a> and
+    <a href="../pragma.html#pragma_threads">PRAGMA threads</a> command for configuring the number of available worker threads.
+<li>The <a href="../spellfix1.html">spellfix1</a> extension allows the application to optionally specify the rowid for
+    each INSERT.
+<li>Added the <a href="https://www.sqlite.org/src/doc/trunk/ext/userauth/user-auth.txt">User Authentication</a>
+    extension.
+<p><b>Bug Fixes:</b>
+<li>Fix a bug in the <a href="../partialindex.html">partial index</a> implementation that might result in an incorrect
+    answer if a partial index is used in a subquery or in a <a href="../lang_createview.html">view</a>.
+    Ticket <a href="https://www.sqlite.org/src/info/98d973b8f5">98d973b8f5</a>.
+<li>Fix a query planner bug that might cause a table to be scanned in the wrong direction
+    (thus reversing the order of output) when a DESC index is used to implement the ORDER BY
+    clause on a query that has an identical GROUP BY clause.
+    Ticket <a href="https://www.sqlite.org/src/info/ba7cbfaedc7e6">ba7cbfaedc7e6</a>.
+<li>Fix a bug in <a href="../c3ref/profile.html">sqlite3_trace()</a> that was causing it to sometimes fail to print
+    an SQL statement if that statement needed to be re-prepared.
+    Ticket <a href="https://www.sqlite.org/src/info/11d5aa455e0d98f3c1e6a08">11d5aa455e0d98f3c1e6a08</a>
+<li>Fix a faulty assert() statement.
+    Ticket <a href="https://www.sqlite.org/src/info/369d57fb8e5ccdff06f1">369d57fb8e5ccdff06f1</a>
+<p><b>Test, Debug, and Analysis Changes:</b>
+<li>Show ASCII-art abstract syntax tree diagrams using the ".selecttrace"
+    and ".wheretrace" commands in the
+    <a href="../cli.html">command-line shell</a> when compiled with <a href="../compile.html#debug">SQLITE_DEBUG</a>, SQLITE_ENABLE_SELECTTRACE,
+    and SQLITE_ENABLE_WHERETRACE.  Also provide the sqlite3TreeViewExpr() and
+    sqlite3TreeViewSelect() entry points that can be invoked from with the
+    debugger to show the parse tree when stopped at a breakpoint.
+<li>Drop support for SQLITE_ENABLE_TREE_EXPLAIN.  The SELECTTRACE mechanism provides
+    more useful diagnostics information.
+<li>New options to the <a href="../cli.html">command-line shell</a> for configuring auxiliary
+    memory usage: --pagecache, --lookaside, and --scratch.
+<li>SQLITE_SOURCE_ID: "2014-10-17 11:24:17 e4ab094f8afce0817f4074e823fabe59fc29ebb4"
+<li>SHA1 for sqlite3.c: 56dcf5e931a9e1fa12fc2d600cd91d3bf9b639cd
+
+
+</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>
+    
+