175 lines
8.0 KiB
HTML
175 lines
8.0 KiB
HTML
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<title>SQLite Release 3.7.16.1 On 2013-03-29</title>
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<h2>SQLite Release 3.7.16.1 On 2013-03-29</h2><p><ol class='lessindent'>
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<li>Added the <a href="../pragma.html#pragma_foreign_key_check">PRAGMA foreign_key_check</a> command.
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<li>Added new extended error codes for all SQLITE_CONSTRAINT errors
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<li>Added the SQLITE_READONLY_ROLLBACK extended error code for when a database
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cannot be opened because it needs rollback recovery but is read-only.
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<li>Added SQL functions <a href="../lang_corefunc.html#unicode">unicode(A)</a> and <a href="../lang_corefunc.html#char">char(X1,...,XN)</a>.
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<li>Performance improvements for <a href="../pragma.html#pragma_incremental_vacuum">PRAGMA incremental_vacuum</a>, especially in
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cases where the number of free pages is greater than what will fit on a
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single trunk page of the freelist.
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<li>Improved optimization of queries containing aggregate min() or max().
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<li>Enhance virtual tables so that they can potentially use an index when
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the WHERE clause contains the IN operator.
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<li>Allow indices to be used for sorting even if prior terms of the index
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are constrained by IN operators in the WHERE clause.
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<li>Enhance the <a href="../pragma.html#pragma_table_info">PRAGMA table_info</a> command so that the "pk" column is an
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increasing integer to show the order of columns in the primary key.
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<li>Enhance the query optimizer to exploit transitive join constraints.
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<li>Performance improvements in the query optimizer.
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<li>Allow the error message from <a href="../pragma.html#pragma_integrity_check">PRAGMA integrity_check</a> to be longer than
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20000 bytes.
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<li>Improved name resolution for deeply nested queries.
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<li>Added the test_regexp.c module as a demonstration of how to implement
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the REGEXP operator.
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<li>Improved error messages in the <a href="../rtree.html">RTREE</a> extension.
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<li>Enhance the <a href="../cli.html">command-line shell</a> so that a non-zero argument to the
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".exit" command causes the shell to exit immediately without cleanly
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shutting down the database connection.
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<li>Improved error messages for invalid boolean arguments to dot-commands
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in the <a href="../cli.html">command-line shell</a>.
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<li>Improved error messages for "foreign key mismatch" showing the names of
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the two tables involved.
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<li>Remove all uses of umask() in the unix VFS.
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<li>Added the <a href="../pragma.html#pragma_vdbe_addoptrace">PRAGMA vdbe_addoptrace</a> and <a href="../pragma.html#pragma_vdbe_debug">PRAGMA vdbe_debug</a> commands.
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<li>Change to use strncmp() or the equivalent instead of memcmp() when
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comparing non-zero-terminated strings.
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<li>Update cygwin interfaces to omit deprecated API calls.
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<li>Enhance the <a href="../spellfix1.html">spellfix1</a> extension so that the edit distance cost table can
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be changed at runtime by inserting a string like 'edit_cost_table=TABLE'
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into the "command" field.
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<li>Bug fix: repair a long-standing problem that could cause incorrect query
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results in a 3-way or larger join that compared INTEGER fields against TEXT
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fields in two or more places.
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Ticket <a href="http://www.sqlite.org/src/info/fc7bd6358f">fc7bd6358f</a>
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<li>Bug fix: Issue an error message if the 16-bit reference counter on a
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view overflows due to an overly complex query.
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<li>Bug fix: Avoid leaking memory on LIMIT and OFFSET clauses in deeply
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nested UNION ALL queries.
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<li>Bug fix: Make sure the schema is up-to-date prior to running pragmas
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table_info, index_list, index_info, and foreign_key_list.
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</ol></p><p><ol class='lessindent'>
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<li>Fix for a bug in the ORDER BY optimizer that was introduced in
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<a href="../releaselog/3_7_15.html">version 3.7.15</a> which would sometimes optimize out the sorting step
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when in fact the sort was required.
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Ticket <a href="http://www.sqlite.org/src/info/a179fe7465">a179fe7465</a>
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<li>Fix a long-standing bug in the <a href="../lang_expr.html#castexpr">CAST expression</a> that would recognize UTF16
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characters as digits even if their most-significant-byte was not zero.
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Ticket <a href="http://www.sqlite.org/src/info/689137afb6da41">689137afb6da41</a>.
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<li>Fix a bug in the NEAR operator of <a href="../fts3.html">FTS3</a> when applied to subfields.
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Ticket <a href="http://www.sqlite.org/src/info/38b1ae018f">38b1ae018f</a>.
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<li>Fix a long-standing bug in the storage engine that would (very rarely)
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cause a spurious report of an SQLITE_CORRUPT error but which was otherwise
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harmless.
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Ticket <a href="http://www.sqlite.org/src/info/6bfb98dfc0c">6bfb98dfc0c</a>.
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<li>The SQLITE_OMIT_MERGE_SORT option has been removed. The merge sorter is
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now a required component of SQLite.
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<li>Fixed lots of spelling errors in the source-code comments
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<li>SQLITE_SOURCE_ID:
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"2013-03-29 13:44:34 527231bc67285f01fb18d4451b28f61da3c4e39d"
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<li>SHA1 for sqlite3.c: 7a91ceceac9bcf47ceb8219126276e5518f7ff5a
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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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