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<h2>SQLite Release 3.5.4 On 2007-12-14</h2><p><ol class='lessindent'>
<li>Fix a critical bug in UPDATE or DELETE that occurs when an
OR REPLACE clause or a trigger causes rows in the same table to
be deleted as side effects. (See ticket #2832.) The most likely
result of this bug is a segmentation fault, though database
corruption is a possibility.</li>
<li>Bring the processing of ORDER BY into compliance with the
SQL standard for case where a result alias and a table column name
are in conflict. Correct behavior is to prefer the result alias.
Older versions of SQLite incorrectly picked the table column.
(See ticket #2822.)</li>
<li>The <a href="../lang_vacuum.html">VACUUM</a> command preserves
the setting of the
<a href="../pragma.html#pragma_legacy_file_format">legacy_file_format pragma</a>.
(Ticket #2804.)</li>
<li>Productize and officially support the group_concat() SQL function.</li>
<li>Better optimization of some IN operator expressions.</li>
<li>Add the ability to change the
<a href="../pragma.html#pragma_auto_vacuum">auto_vacuum</a> status of a
database by setting the auto_vaccum pragma and VACUUMing the database.</li>
<li>Prefix search in FTS3 is much more efficient.</li>
<li>Relax the SQL statement length restriction in the CLI so that
the ".dump" output of databases with very large BLOBs and strings can
be played back to recreate the database.</li>
<li>Other small bug fixes and optimizations.</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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