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<title>SQLite Release 3.7.3 On 2010-10-08</title>
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<h2>SQLite Release 3.7.3 On 2010-10-08</h2><p><ol class='lessindent'>
<li> Added the <a href="../c3ref/create_function.html">sqlite3_create_function_v2()</a> interface that includes a
destructor callback.
<li> Added support for <a href="../rtree.html#customquery">custom r-tree queries</a> using application-supplied
callback routines to define the boundary of the query region.
<li> The default page cache strives more diligently to avoid using memory
beyond what is allocated to it by <a href="../c3ref/c_config_covering_index_scan.html#sqliteconfigpagecache">SQLITE_CONFIG_PAGECACHE</a>. Or if
using page cache is allocating from the heap, it strives to avoid
going over the <a href="../c3ref/hard_heap_limit64.html">sqlite3_soft_heap_limit64()</a>, even if
<a href="../compile.html#enable_memory_management">SQLITE_ENABLE_MEMORY_MANAGEMENT</a> is not set.
<li> Added the <a href="../c3ref/hard_heap_limit64.html">sqlite3_soft_heap_limit64()</a> interface as a replacement for
<a href="../c3ref/soft_heap_limit.html">sqlite3_soft_heap_limit()</a>.
<li> The <a href="../lang_analyze.html">ANALYZE</a> command now gathers statistics on tables even if they
have no indices.
<li> Tweaks to the query planner to help it do a better job of finding the
most efficient query plan for each query.
<li> Enhanced the internal text-to-numeric conversion routines so that they
work with UTF8 or UTF16, thereby avoiding some UTF16-to-UTF8 text
conversions.
<li> Fix a problem that was causing excess memory usage with large <a href="../wal.html">WAL</a>
transactions in win32 systems.
<li> The interface between the VDBE and B-Tree layer is enhanced such that
the VDBE provides hints to the B-Tree layer letting the B-Tree layer
know when it is safe to use hashing instead of B-Trees for transient
tables.
<li> Miscellaneous documentation enhancements.
</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="http://www.sqlite.org/src/timeline">
SQLite version control site</a>.</p>
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