167 lines
		
	
	
		
			8.2 KiB
		
	
	
	
		
			HTML
		
	
	
	
	
	
			
		
		
	
	
			167 lines
		
	
	
		
			8.2 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 3.13.0 On 2016-05-18</title>
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<!-- path=../ -->
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</head>
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<body>
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<a href="../index.html">
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Small. Fast. Reliable.<br>Choose any three.
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<h2>SQLite Release 3.13.0 On 2016-05-18</h2><p><ol class='lessindent'>
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<li>Postpone I/O associated with TEMP files for as long as possible, with the hope
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    that the I/O can ultimately be avoided completely.
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<li>Merged the <a href="../sessionintro.html">session</a> extension into trunk.
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<li>Added the ".auth ON|OFF" command to the <a href="../cli.html">command-line shell</a>.
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<li>Added the "--indent" option to the ".schema" and ".fullschema" commands of
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    the <a href="../cli.html">command-line shell</a>, to turn on pretty-printing.
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<li>Added the ".eqp full" option to the <a href="../cli.html">command-line shell</a>, that does both <a href="../lang_explain.html">EXPLAIN</a>
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    and <a href="../eqp.html">EXPLAIN QUERY PLAN</a> on each statement that is evaluated.
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<li>Improved unicode filename handling in the <a href="../cli.html">command-line shell</a> on Windows.
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<li>Improved resistance against goofy query planner decisions caused by
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    incomplete or incorrect modifications to the <a href="../fileformat2.html#stat1tab">sqlite_stat1</a> 
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    table by the application.
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<li>Added the <a href="../c3ref/db_config.html">sqlite3_db_config</a>(db,<a href="../c3ref/c_dbconfig_defensive.html#sqlitedbconfigenableloadextension">SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION</a>) interface
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    which allows the <a href="../c3ref/load_extension.html">sqlite3_load_extension()</a> C-API to be enabled while keeping the
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    <a href="../lang_corefunc.html#load_extension">load_extension()</a> SQL function disabled for security.
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<li>Change the <a href="../tempfiles.html#tempdir">temporary directory search algorithm</a> on Unix to allow directories with
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    write and execute permission, but without read permission, to serve as temporary
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    directories.  Apply this same standard to the "." fallback directory.
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<p><b>Bug Fixes:</b>
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<li>Fix a problem with the multi-row one-pass DELETE optimization that was
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    causing it to compute incorrect answers with a self-referential subquery in
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    the WHERE clause.  Fix for ticket
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    <a href="https://www.sqlite.org/src/info/dc6ebeda9396087">dc6ebeda9396087</a>
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<li>Fix a possible segfault with DELETE when table is a <a href="../rowidtable.html">rowid table</a> with an 
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    <a href="../lang_createtable.html#rowid">INTEGER PRIMARY KEY</a> and the WHERE clause contains a OR and
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    the table has one or more indexes that are able to trigger the OR optimization,
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    but none of the indexes reference any table columns other than the INTEGER PRIMARY KEY.
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    Ticket <a href="https://www.sqlite.org/src/info/16c9801ceba49">16c9801ceba49</a>.
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<li>When checking for the WHERE-clause push-down optimization, verify that all terms
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    of the compound inner SELECT are non-aggregate, not just the last term. Fix for ticket
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    <a href="https://www.sqlite.org/src/info/f7f8c97e97597">f7f8c97e97597</a>.
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<li>Fix a locking race condition in Windows that can occur when two or more processes
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    attempt to recover the same <a href="../fileformat2.html#hotjrnl">hot journal</a> at the same time.
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<p><b>Hashes:</b>
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<li>SQLITE_SOURCE_ID: "2016-05-18 10:57:30 fc49f556e48970561d7ab6a2f24fdd7d9eb81ff2"
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<li>SHA1 for sqlite3.c: 9b9171b1e6ce7a980e6b714e9c0d9112657ad552
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<p><b>Bug fixes backported into patch release 3.12.2 (2016-04-18):</b></p>
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<li>Fix a backwards compatibility problem in version 3.12.0 and 3.12.1:
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    Columns declared as <tt>"INTEGER" PRIMARY KEY</tt> (with quotes around
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    the datatype keyword) were not being recognized as an
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    <a href="../lang_createtable.html#rowid">INTEGER PRIMARY KEY</a>, which resulted in an incompatible database file.
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    Ticket <a href="https://www.sqlite.org/src/info/7d7525cb01b68">7d7525cb01b68</a>
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<li>Fix a bug (present since <a href="../releaselog/3_9_0.html">version 3.9.0</a>) that can cause the <a href="../lang_delete.html">DELETE</a>
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    operation to miss rows if <a href="../pragma.html#pragma_reverse_unordered_selects">PRAGMA reverse_unordered_selects</a> is turned on.
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    Ticket <a href="https://www.sqlite.org/src/info/a306e56ff68b8fa5">a306e56ff68b8fa5</a>
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<li>Fix a bug in the code generator that can cause incorrect results if
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    two or more <a href="../vtab.html">virtual tables</a> are joined and the virtual table used in
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    outer loop of the join has an <a href="../lang_expr.html#in_op">IN operator</a> constraint.
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<li>Correctly interpret negative "PRAGMA cache_size" values when determining
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    the cache size used for sorting large amounts of data.
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<p><b>Bug fixes backported into patch release 3.12.1 (2016-04-08):</b></p>
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<li>Fix a boundary condition error introduced by version 3.12.0
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    that can result in a crash during heavy <a href="../lang_savepoint.html">SAVEPOINT</a> usage.
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    Ticket <a href="https://www.sqlite.org/src/info/7f7f8026eda38">7f7f8026eda38</a>.
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<li>Fix <a href="../lang_createview.html">views</a> so that they inherit column datatypes from the 
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    table that they are defined against, when possible.
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<li>Fix the query planner so that IS and IS NULL operators are able
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    to drive an index on a LEFT OUTER JOIN.
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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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