173 lines
7.9 KiB
HTML
173 lines
7.9 KiB
HTML
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<title>SQLite Release 3.9.2 On 2015-11-02</title>
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<h2>SQLite Release 3.9.2 On 2015-11-02</h2><p><b>Changes in version 3.9.0 (2015-10-14):</b></p>
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<p><ol class='lessindent'>
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<p><b>Policy Changes:</b>
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<li value='1'>The <a href="../versionnumbers.html">version numbering conventions</a> for SQLite are revised to use the
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emerging standard of <a href="http://semver.org/">semantic versioning</a>.
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<p><b>New Features And Enhancements:</b>
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<li>Added <a href="../json1.html">the json1 extension</a> module in the source tree, and in the <a href="../amalgamation.html">amalgamation</a>.
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Enable support using the <a href="../compile.html#enable_json1">SQLITE_ENABLE_JSON1</a> compile-time option.
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<li>Added <a href="../fts5.html">Full Text Search version 5 (FTS5)</a> to the <a href="../amalgamation.html">amalgamation</a>, enabled
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using <a href="../compile.html#enable_fts5">SQLITE_ENABLE_FTS5</a>. FTS5 will be considered "experimental" (subject
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to incompatible changes) for at least one more release cycle.
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<li>The <a href="../lang_createview.html">CREATE VIEW</a> statement now accepts an optional list of
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column names following the view name.
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<li>Added support for <a href="../expridx.html">indexes on expressions</a>.
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<li>Added support for <a href="../vtab.html#tabfunc2">table-valued functions</a> in the FROM clause of a
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<a href="../lang_select.html">SELECT</a> statement.
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<li>Added support for <a href="../vtab.html#epovtab">eponymous virtual tables</a>.
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<li>A <a href="../lang_createview.html">VIEW</a> may now reference undefined tables and functions when
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initially created. Missing tables and functions are reported when
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the VIEW is used in a query.
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<li>Added the <a href="../c3ref/value_subtype.html">sqlite3_value_subtype()</a> and <a href="../c3ref/result_subtype.html">sqlite3_result_subtype()</a>
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interfaced (used by <a href="../json1.html">the json1 extension</a>).
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<li>The query planner is now able to use <a href="../partialindex.html">partial indexes</a> that contain
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AND-connected terms in the WHERE clause.
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<li>The sqlite3_analyzer.exe utility is updated to report the depth of
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each btree and to show the average fanout for indexes and
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WITHOUT ROWID tables.
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<li>Enhanced the <a href="../dbstat.html">dbstat virtual table</a> so that it can be used as a
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<a href="../vtab.html#tabfunc2">table-valued function</a> where the argument is the schema to be
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analyzed.
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<p><b>Other changes:</b>
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<li>The <a href="../c3ref/aggregate_count.html">sqlite3_memory_alarm()</a> interface, which has been deprecated and
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undocumented for 8 years, is changed into a no-op.
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<p><b>Important fixes:</b>
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<li>Fixed a critical bug in the
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<a href="https://www.sqlite.org/see/doc/trunk/www/readme.wiki">SQLite Encryption Extension</a> that
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could cause the database to become unreadable and unrecoverable if a <a href="../lang_vacuum.html">VACUUM</a> command
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changed the size of the encryption nonce.
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<li>Added a memory barrier in the implementation of
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<a href="../c3ref/initialize.html">sqlite3_initialize()</a> to help ensure that it is thread-safe.
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<li>Fix the <a href="../optoverview.html#or_opt">OR optimization</a> so that it always ignores subplans that
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do not use an index.
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<li>Do not apply the WHERE-clause pushdown optimization on terms that originate
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in the ON or USING clause of a LEFT JOIN. Fix for ticket
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<a href="https://www.sqlite.org/src/info/c2a19d81652f40568c">c2a19d81652f40568c</a>.
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</ol>
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<p><b>Additional changes in version 3.9.1 (2015-10-16):</b></p>
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<p><ol class='lessindent'>
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<li value='18'>Fix <a href="../json1.html">the json1 extension</a> so that it does <u>not</u> recognize ASCII form-feed as a
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whitespace character, in order to comply with RFC-7159. Fix for ticket
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<a href="https://www.sqlite.org/src/info/57eec374ae1d0a1d">57eec374ae1d0a1d</a>
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<li>Add a few #ifdef and build script changes to address compilation issues that
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appeared after the 3.9.0 release.
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</ol>
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<p><b>Additional changes in version 3.9.2:</b></p>
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<p><ol class='lessindent'>
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<li value='20'>Fix the schema parser so that it interprets certain
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(obscure and ill-formed)
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CREATE TABLE statements the same as legacy. Fix for ticket
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<a href="https://www.sqlite.org/src/info/ac661962a2aeab3c331">ac661962a2aeab3c331</a>
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<li>Fix a query planner problem that could result in an incorrect
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answer due to the use of <a href="../optoverview.html#autoindex">automatic indexing</a> in subqueries in
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the FROM clause of a correlated scalar subqueries. Fix for ticket
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<a href="https://www.sqlite.org/src/info/8a2adec1">8a2adec1</a>.
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<li>SQLITE_SOURCE_ID: "2015-11-02 18:31:45 bda77dda9697c463c3d0704014d51627fceee328"
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<li>SHA1 for sqlite3.c: 1c4013876f50bbaa3e6f0f98e0147c76287684c1
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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="http://www.sqlite.org/src/timeline">
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SQLite version control site</a>.</p>
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