SQLite Release 3.5.4 On 2007-12-14 (3.5.4)

• 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.
• 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.)
• The VACUUM command preserves the setting of the legacy_file_format pragma. (Ticket #2804.)
• Productize and officially support the group_concat() SQL function.
• Better optimization of some IN operator expressions.
• Add the ability to change the auto_vacuum status of a database by setting the auto_vaccum pragma and VACUUMing the database.
• Prefix search in FTS3 is much more efficient.
• 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.
• Other small bug fixes and optimizations.

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