144 lines
5.3 KiB
HTML
144 lines
5.3 KiB
HTML
<!DOCTYPE html>
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<title>SQLite Release 3.3.14 On 2007-04-02</title>
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<h2>SQLite Release 3.3.14 On 2007-04-02</h2><p><ol class='lessindent'>
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<li>Fix a bug (ticket #2273)
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that could cause a segfault when the IN operator
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is used one one term of a two-column index and the right-hand side of
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the IN operator contains a NULL.</li>
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<li>Added a new OS interface method for determining the sector size
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of underlying media: sqlite3OsSectorSize().</li>
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<li>A new algorithm for statements of the form
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INSERT INTO <i>table1</i> SELECT * FROM <i>table2</i>
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is faster and reduces fragmentation. VACUUM uses statements of
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this form and thus runs faster and defragments better.</li>
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<li>Performance enhancements through reductions in disk I/O:
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<ol type='a'>
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<li>Do not read the last page of an overflow chain when
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deleting the row - just add that page to the freelist.</li>
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<li>Do not store pages being deleted in the
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rollback journal.</li>
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<li>Do not read in the (meaningless) content of
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pages extracted from the freelist.</li>
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<li>Do not flush the page cache (and thus avoiding
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a cache refill) unless another process changes the underlying
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database file.</li>
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<li>Truncate rather than delete the rollback journal when committing
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a transaction in exclusive access mode, or when committing the TEMP
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database.</li>
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</ol></li>
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<li>Added support for exclusive access mode using
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<a href="../pragma.html#pragma_locking_mode">
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"PRAGMA locking_mode=EXCLUSIVE"</a></li>
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<li>Use heap space instead of stack space for large buffers in the
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pager - useful on embedded platforms with stack-space
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limitations.</li>
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<li>Add a makefile target "sqlite3.c" that builds an amalgamation containing
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the core SQLite library C code in a single file.</li>
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<li>Get the library working correctly when compiled
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with GCC option "-fstrict-aliasing".</li>
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<li>Removed the vestigal SQLITE_PROTOCOL error.</li>
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<li>Improvements to test coverage, other minor bugs fixed,
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memory leaks plugged,
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code refactored and/or recommended in places for easier reading.</li>
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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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