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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 17:28:19 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 17:28:19 +0000
commit18657a960e125336f704ea058e25c27bd3900dcb (patch)
tree17b438b680ed45a996d7b59951e6aa34023783f2 /www/releaselog/3_21_0.html
parentInitial commit. (diff)
downloadsqlite3-18657a960e125336f704ea058e25c27bd3900dcb.tar.xz
sqlite3-18657a960e125336f704ea058e25c27bd3900dcb.zip
Adding upstream version 3.40.1.upstream/3.40.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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@@ -0,0 +1,209 @@
+<!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 3.21.0 On 2017-10-24</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 3.21.0 On 2017-10-24</h2><p><ol class='lessindent'>
+<li> Take advantage of the atomic-write capabilities in the
+ <a href="https://en.wikipedia.org/wiki/F2FS">F2FS filesystem</a> when available, for
+ greatly reduced transaction overhead. This currently requires the
+ <a href="../compile.html#enable_batch_atomic_write">SQLITE_ENABLE_BATCH_ATOMIC_WRITE</a> compile-time option.
+<li> Allow <a href="../lang_attach.html">ATTACH</a> and <a href="../lang_detach.html">DETACH</a> commands to work inside of a transaction.
+<li> Allow <a href="../vtab.html#worid">WITHOUT ROWID virtual tables</a> to be writable if the PRIMARY KEY
+ contains exactly one column.
+<li> The "fsync()" that occurs after the header is written in a WAL reset
+ now uses the sync settings for checkpoints. This means it will use a
+ "fullfsync" on macs if <a href="../pragma.html#pragma_checkpoint_fullfsync">PRAGMA checkpoint_fullfsync</a> set on.
+<li> The <a href="../c3ref/libversion.html">sqlite3_sourceid()</a> function tries to detect if the source code has
+ been modified from what is checked into version control and if there are
+ modifications, the last four characters of the version hash are shown as
+ "alt1" or "alt2". The objective is to detect accidental and/or careless
+ edits. A forger can subvert this feature.
+<li> Improved de-quoting of column names for <a href="../lang_createtable.html#createtabas">CREATE TABLE AS</a> statements with
+ an aggregate query on the right-hand side.
+<li> Fewer "stat()" system calls issued by the unix VFS.
+<li> Enhanced the <a href="../optoverview.html#like_opt">LIKE optimization</a> so that it works with an <a href="../lang_expr.html#like">ESCAPE</a> clause.
+<li> Enhanced <a href="../pragma.html#pragma_integrity_check">PRAGMA integrity_check</a> and <a href="../pragma.html#pragma_quick_check">PRAGMA quick_check</a> to detect obscure
+ row corruption that they were formerly missing. Also update both pragmas
+ so that they return error text rather than SQLITE_CORRUPT when encountering
+ corruption in <a href="../fileformat2.html#record_format">records</a>.
+<li> The query planner now prefers to implement FROM-clause subqueries using
+ <a href="../optoverview.html#coroutines">co-routines</a> rather using the <a href="../optoverview.html#flattening">query flattener</a> optimization. Support for
+ the use of co-routines for subqueries may no longer be disabled.
+<li> Pass information about !=, IS, IS NOT, NOT NULL, and IS NULL constraints
+ into the <a href="../vtab.html#xbestindex">xBestIndex</a> method of virtual tables.
+<li> Enhanced the <a href="../csv.html">CSV virtual table</a> so that it accepts the last row of
+ input if the final new-line character is missing.
+<li> Remove the rarely-used "scratch" memory allocator. Replace it with the
+ <a href="../c3ref/c_config_covering_index_scan.html#sqliteconfigsmallmalloc">SQLITE_CONFIG_SMALL_MALLOC</a> configuration setting that gives SQLite
+ a hint that large memory allocations should be avoided when possible.
+<li> Added the
+ <a href="https://sqlite.org/src/file/ext/misc/unionvtab.c">swarm virtual table</a>
+ to the existing union virtual table extension.
+<li> Added the
+ <a href="https://sqlite.org/src/file/src/dbpage.c">sqlite_dbpage virtual table</a>
+ for providing direct access to pages
+ of the database file. The source code is built into the <a href="../amalgamation.html">amalgamation</a> and
+ is activated using the <a href="../compile.html#enable_dbpage_vtab">-DSQLITE_ENABLE_DBPAGE_VTAB</a> compile-time option.
+<li> Add a new type of fts5vocab virtual table - "instance" - that provides
+ direct access to an FTS5 full-text index at the lowest possible level.
+<li> Remove a call to rand_s() in the Windows VFS since it was causing problems
+ in Firefox on some older laptops.
+<li> The <a href="https://sqlite.org/src/finfo?name=src/shell.c">src/shell.c</a> source code
+ to the <a href="../cli.html">command-line shell</a> is no longer under version control. That file
+ is now generated as part of the build process.
+<li> Miscellaneous <a href="../cpu.html#microopt">microoptimizations</a> reduce CPU usage by about 2.1%.
+<li> Bug fixes:
+<ol type="a">
+ <li> Fix a faulty assert() statement discovered by OSSFuzz.
+ Ticket <a href="https://sqlite.org/src/info/cb91bf4290c211d">cb91bf4290c211d</a>
+ <li> Fix an obscure memory leak in <a href="../c3ref/result_blob.html">sqlite3_result_pointer()</a>.
+ Ticket <a href="https://sqlite.org/src/info/7486aa54b968e9b">7486aa54b968e9b</a>
+ <li> Avoid a possible use-after-free error by deferring schema resets until
+ after the query planner has finished running.
+ Ticket <a href="https://sqlite.org/src/info/be436a7f4587ce5">be436a7f4587ce5</a>
+ <li> Only use indexes-on-expressions to optimize ORDER BY or GROUP BY if
+ the COLLATE is correct.
+ Ticket <a href="https://sqlite.org/src/info/e20dd54ab0e4383">e20dd54ab0e4383</a>
+ <li> Fix an assertion fault that was coming up when the expression in an
+ index-on-expressions is really a constant.
+ Ticket <a href="https://sqlite.org/src/info/aa98619ad08ddca">aa98619ad08ddca</a>
+ <li> Fix an assertion fault that could occur following
+ <a href="../pragma.html#pragma_reverse_unordered_selects">PRAGMA reverse_unordered_selects</a>.
+ Ticket <a href="https://sqlite.org/src/info/cb91bf4290c211d">cb91bf4290c211d</a>
+ <li> Fix a segfault that can occur for queries that use table-valued functions
+ in an IN or EXISTS subquery.
+ Ticket <a href="https://sqlite.org/src/info/b899b6042f97f5">b899b6042f97f5</a>
+ <li> Fix a potential integer overflow problem when compiling a particular
+ horrendous common table expression. This was another problem discovered
+ by OSSFuzz. Check-in <a href="https://sqlite.org/src/info/6ee8cb6ae5">6ee8cb6ae5</a>.
+ <li> Fix a potential out-of-bound read when querying a corrupt database file,
+ a problem detected by Natalie Silvanovich of Google Project Zero.
+ Check-in <a href="https://sqlite.org/src/info/04925dee41a21f">04925dee41a21f</a>.
+</ol>
+<p><b>Hashes:</b>
+<li>SQLITE_SOURCE_ID: "2017-10-24 18:55:49 1a584e499906b5c87ec7d43d4abce641fdf017c42125b083109bc77c4de48827"
+<li>SHA3-256 for sqlite3.c: 84c181c0283d0320f488357fc8aab51898370c157601459ebee49d779036fe03
+
+</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>
+
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 01:12:37 +0000