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diff --git a/www/releaselog/3_20_0.html b/www/releaselog/3_20_0.html new file mode 100644 index 0000000..d24f96d --- /dev/null +++ b/www/releaselog/3_20_0.html @@ -0,0 +1,225 @@ +<!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 3.20.0 On 2017-08-01</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 3.20.0 On 2017-08-01</h2><p><ol class='lessindent'> +<li> Update the text of error messages returned by <a href="../c3ref/errcode.html">sqlite3_errmsg()</a> for some + error codes. +<li> Add new <a href="../bindptr.html">pointer passing interfaces</a>. +<li> Backwards-incompatible changes to some extensions in order to take + advantage of the improved security offered by the new + <a href="../bindptr.html">pointer passing interfaces</a>: + <ol type='a'> + <li> <a href="../fts5.html#extending_fts5">Extending FTS5</a> → requires <a href="../c3ref/bind_blob.html">sqlite3_bind_pointer()</a> to find + the fts5_api pointer. + <li> <a href="../carray.html">carray(PTR,N)</a> → requires <a href="../c3ref/bind_blob.html">sqlite3_bind_pointer()</a> to set the PTR parameter. + <li> <a href="https://www.sqlite.org/src/file/ext/misc/remember.c">remember(V,PTR)</a> + → requires <a href="../c3ref/bind_blob.html">sqlite3_bind_pointer()</a> to set the PTR parameter. + </ol> +<li> Added the <a href="../stmt.html">SQLITE_STMT virtual table</a> extension. +<li> Added the <a href="../completion.html">COMPLETION extension</a> - designed to suggest + tab-completions for interactive user interfaces. This is a work in progress. + Expect further enhancements in future releases. +<li> Added the <a href="../unionvtab.html">UNION virtual table</a> extension. +<li> The built-in <a href="../lang_datefunc.html">date and time functions</a> have been enhanced so that they can be + used in <a href="../lang_createtable.html#ckconst">CHECK constraints</a>, in <a href="../expridx.html">indexes on expressions</a>, and in the WHERE clauses + of <a href="../partialindex.html">partial indexes</a>, provided that they do not use the 'now', 'localtime', or + 'utc' keywords. <a href="../deterministic.html#dtexception">More information</a>. +<li> Added the <a href="../c3ref/prepare.html">sqlite3_prepare_v3()</a> and <a href="../c3ref/prepare.html">sqlite3_prepare16_v3()</a> interfaces + with the extra "prepFlags" parameters. +<li> Provide the <a href="../c3ref/c_prepare_normalize.html#sqlitepreparepersistent">SQLITE_PREPARE_PERSISTENT</a> flag for <a href="../c3ref/prepare.html">sqlite3_prepare_v3()</a> and + use it to limit <a href="../malloc.html#lookaside">lookaside memory</a> misuse by <a href="../fts3.html">FTS3</a>, <a href="../fts5.html">FTS5</a>, and the + <a href="../rtree.html">R-Tree extension</a>. +<li> Added the <a href="../pragma.html#pragma_secure_delete">PRAGMA secure_delete=FAST</a> command. When secure_delete is + set to FAST, old content is overwritten with zeros as long as that does + not increase the amount of I/O. Deleted content might still persist on + the <a href="../fileformat2.html#freelist">free-page list</a> but will be purged from all b-tree pages. +<li> Enhancements to the <a href="../cli.html">command-line shell</a>: +<ol type='a'> + <li> Add support for tab-completion using the <a href="../completion.html">COMPLETION extension</a>, for + both readline and linenoise. + <li> Add the ".cd" command. + <li> Enhance the "<a href="../cli.html#dschema">.schema</a>" command to show the schema of all attached + databases. + <li> Enhance "<a href="../cli.html#dtables">.tables</a>" so that it shows the schema names for all attached + if the name is anything other than "main". + <li> The "<a href="../cli.html#csv">.import</a>" command ignores an initial UTF-8 BOM. + <li> Added the "--newlines" option to the "<a href="../cli.html#dump">.dump</a>" command to cause U+000a and + U+000d characters to be output literally rather than escaped using the + <a href="../lang_corefunc.html#replace">replace()</a> function. +</ol> +<li> Query planner enhancements: +<ol type='a'> + <li> When generating individual loops for each ORed term of an OR scan, + move any constant WHERE expressions outside of the loop, as is + done for top-level loops. + <li> The query planner examines the values of bound parameters to help + determine if a partial index is usable. + <li> When deciding between two plans with the same estimated cost, bias + the selection toward the one that does not use the sorter. + <li> Evaluate WHERE clause constraints involving correlated subqueries + last, in the hope that they never have be evaluated at all. + <li> Do not use the <a href="../optoverview.html#flattening">flattening optimization</a> for a sub-query on the RHS + of a LEFT JOIN if that subquery reads data from a <a href="../vtab.html">virtual table</a> as + doing so prevents the query planner from creating <a href="../optoverview.html#autoindex">automatic indexes</a> + on the results of the sub-query, which can slow down the query. +</ol> +<li> Add <a href="../c3ref/c_stmtstatus_counter.html#sqlitestmtstatusreprepare">SQLITE_STMTSTATUS_REPREPARE</a>, <a href="../c3ref/c_stmtstatus_counter.html#sqlitestmtstatusrun">SQLITE_STMTSTATUS_RUN</a>, + and <a href="../c3ref/c_stmtstatus_counter.html#sqlitestmtstatusmemused">SQLITE_STMTSTATUS_MEMUSED</a> options for the + <a href="../c3ref/stmt_status.html">sqlite3_stmt_status()</a> interface. +<li> Provide <a href="../pragma.html#pragfunc">PRAGMA functions</a> for + <a href="../pragma.html#pragma_integrity_check">PRAGMA integrity_check</a>, <a href="../pragma.html#pragma_quick_check">PRAGMA quick_check</a>, and + <a href="../pragma.html#pragma_foreign_key_check">PRAGMA foreign_key_check</a>. +<li> Add the -withoutnulls option to the <a href="../tclsqlite.html#eval">TCL interface eval method</a>. +<li> Enhance the <a href="../sqlanalyze.html">sqlite3_analyzer.exe</a> utility program so that it shows + the number of bytes of metadata on btree pages. +<li> The <a href="../c3ref/c_dbconfig_defensive.html#sqlitedbconfigenableqpsg">SQLITE_DBCONFIG_ENABLE_QPSG</a> run-time option and the + <a href="../compile.html#enable_qpsg">SQLITE_ENABLE_QPSG</a> compile-time option enable the + <a href="../queryplanner-ng.html#qpstab">query planner stability guarantee</a>. See also ticket + <a href="https://www.sqlite.org/src/info/892fc34f173e99d8">892fc34f173e99d8</a> +<li> Miscellaneous optimizations result in a 2% reduction in <a href="../cpu.html">CPU cycles used</a>. +<p><b>Bug Fixes:</b> +<li> Fix the behavior of <a href="../c3ref/column_name.html">sqlite3_column_name()</a> for queries that use the + <a href="../optoverview.html#flattening">flattening optimization</a> so that the result is consistent with other + queries that do not use that optimization, and with PostgreSQL, MySQL, + and SQLServer. Ticket <a href="https://sqlite.org/src/info/de3403bf5ae">de3403bf5ae</a>. +<li> Fix the query planner so that it knows not to use <a href="../optoverview.html#autoindex">automatic indexes</a> + on the right table of LEFT JOIN if the WHERE clause uses the <a href="../lang_expr.html#isisnot">IS operator</a>. + Fix for <a href="https://sqlite.org/src/info/ce68383bf6aba">ce68383bf6aba</a>. +<li> Ensure that the query planner knows that any column of a + <a href="../optoverview.html#flattening">flattened</a> LEFT JOIN can be NULL even + if that column is labeled with "NOT NULL". Fix for ticket + <a href="https://sqlite.org/src/info/892fc34f173e99d8">892fc34f173e99d8</a>. +<li> Fix rare false-positives in <a href="../pragma.html#pragma_integrity_check">PRAGMA integrity_check</a> when run on a database connection + with <a href="../lang_attach.html">attached databases</a>. Ticket + <a href="https://sqlite.org/src/info/a4e06e75a9ab61a12">a4e06e75a9ab61a12</a> +<li> Fix a bug (discovered by OSSFuzz) that causes an assertion fault if certain + dodgy CREATE TABLE declarations are used. Ticket + <a href="https://sqlite.org/src/info/bc115541132dad136">bc115541132dad136</a> +<p><b>Hashes:</b> +<li>SQLITE_SOURCE_ID: "2017-08-01 13:24:15 9501e22dfeebdcefa783575e47c60b514d7c2e0cad73b2a496c0bc4b680900a8" +<li>SHA3-256 for sqlite3.c: 79b7f3b977360456350219cba0ba0e5eb55910565eab68ea83edda2f968ebe95 + +</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> + + |