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