172 lines
7.3 KiB
HTML
172 lines
7.3 KiB
HTML
<!DOCTYPE html>
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<html><head>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<link href="../sqlite.css" rel="stylesheet">
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<title>SQLite Release 3.39.1 On 2022-07-13</title>
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<!-- path=../ -->
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</head>
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<body>
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<div class=nosearch>
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<a href="../index.html">
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<img class="logo" src="../images/sqlite370_banner.gif" alt="SQLite" border="0">
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</a>
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<div><!-- IE hack to prevent disappearing logo --></div>
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<div class="tagline desktoponly">
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Small. Fast. Reliable.<br>Choose any three.
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</div>
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<div class="menu mainmenu">
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<ul>
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<li><a href="../index.html">Home</a>
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<ul>
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<li><a href='../about.html'>About</a>
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<li><a href='../docs.html'>Documentation</a>
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<li><a href='../download.html'>Download</a>
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<li><a href='../support.html'>Support</a>
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<option value="d">Search Documentation</option>
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<option value="c">Search Changelog</option>
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<h2>SQLite Release 3.39.1 On 2022-07-13</h2><p><b>Prior changes from version 3.39.0 (2022-06-25):</b></p>
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<p><ol class='lessindent'>
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<li value='1'> Add (long overdue) support for <a href="../lang_select.html#rjoin">RIGHT and FULL OUTER JOIN</a>.
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<li> Add new binary comparison operators <a href="../lang_expr.html#isdf">IS NOT DISTINCT FROM</a> and <a href="../lang_expr.html#isdf">IS DISTINCT FROM</a>
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that are equivalent to IS and IS NOT, respective, for compatibility with
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PostgreSQL and SQL standards.
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<li> Add a new return code (value "3") from the <a href="../c3ref/vtab_distinct.html">sqlite3_vtab_distinct()</a>
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interface that indicates a query that has both DISTINCT and ORDER BY
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clauses.
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<li> Added the <a href="../c3ref/db_name.html">sqlite3_db_name()</a> interface.
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<li> The unix os interface resolves all symbolic links in database
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filenames to create a canonical name for the database before the
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file is opened.
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If the <a href="../c3ref/c_open_autoproxy.html">SQLITE_OPEN_NOFOLLOW</a> flag is used with <a href="../c3ref/open.html">sqlite3_open_v2()</a>
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or similar, the open will fail if any element of the path is a
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symbolic link.
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<li> Defer materializing views until the materialization
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is actually needed, thus avoiding unnecessary work if the materialization turns
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out to never be used.
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<li> The <a href="../lang_select.html#resultset">HAVING clause</a> of a <a href="../lang_select.html">SELECT statement</a> is now allowed on any aggregate query,
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even queries that do not have a <a href="../lang_select.html#resultset">GROUP BY clause</a>.
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<li> Many <a href="../cpu.html#microopt">microoptimizations</a> collectively reduce CPU cycles by about 2.3%.
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</ol>
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<p><b>Changes in this specific patch release, version 3.39.1 (2022-07-13):</b></p>
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<p><ol class='lessindent'>
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<li value='9'> Fix an incorrect result from a query that uses a view that contains a compound
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SELECT in which only one arm contains a RIGHT JOIN and where the view is not
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the first FROM clause term of the query that contains the view.
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<a href="https://sqlite.org/forum/forumpost/174afeae5734d42d">forum post 174afeae5734d42d</a>.
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<li> Fix some harmless compiler warnings.
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<li> Fix a long-standing problem with <a href="../lang_altertable.html#altertabrename">ALTER TABLE RENAME</a> that can only arise
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if the <a href="../c3ref/limit.html">sqlite3_limit</a>(<a href="../c3ref/c_limit_attached.html#sqlitelimitsqllength">SQLITE_LIMIT_SQL_LENGTH</a>) is set to a very small value.
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<li> Fix a long-standing problem in <a href="../fts3.html">FTS3</a> that can only arise when compiled with
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the <a href="../compile.html#enable_fts3_parenthesis">SQLITE_ENABLE_FTS3_PARENTHESIS</a> compile-time option.
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<li> Fix the build so that is works when the <a href="../compile.html#debug">SQLITE_DEBUG</a> and
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<a href="../compile.html#omit_windowfunc">SQLITE_OMIT_WINDOWFUNC</a> compile-time options are both provided at the
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same time.
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<li> Fix the initial-prefix optimization for the <a href="../lang_expr.html#regexp">REGEXP</a> extension so that it works
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correctly even if the prefix contains characters that require a 3-byte UTF8
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encoding.
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<li> Enhance the <a href="../stmt.html">sqlite_stmt</a> virtual table so that it buffers all of its output.
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<p><b>Hashes:</b>
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<li>SQLITE_SOURCE_ID: 2022-07-13 19:41:41 7c16541a0efb3985578181171c9f2bb3fdc4bad6a2ec85c6e31ab96f3eff201f
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<li>SHA3-256 for sqlite3.c: 6d13fcf1c31133da541d1eb8a83552d746f39b81a0657bd4077fed0221749511
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</ol></p>
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<p>A <a href="../changes.html">complete list of SQLite releases</a>
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in a single page and a <a href="../chronology.html">chronology</a> are both also available.
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A detailed history of every
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check-in is available at
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<a href="https://www.sqlite.org/src/timeline">
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SQLite version control site</a>.</p>
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