End of Product Lifecycle. Active development and support for MySQL Database Server versions 3.23, 4.0, and 4.1 has ended. For details, see http://www.mysql.com/about/legal/lifecycle/#calendar. Please consider upgrading to a recent version. Further updates to the content of this manual will be minimal. All formats of this manual will continue to be available until 31 Dec 2010.
To start mysqld as
root, you must now use the
Added interface to Berkeley DB. (This is not yet functional; play with it at your own risk!)
Replication between master and slaves.
Fixed bug that other threads could steal a lock when a thread had a lock on a table and did a
FLUSH TABLES command.
slow_launch_time variable and the
Slow_launch_threads status variable to mysqld. These can be examined with mysqladmin variables and mysqladmin extended-status.
The default type of
IF() now depends on the second and third arguments and not only on the second argument.
Fixed case when myisamchk could go into a loop when trying to repair a crashed table.
Do not write
INSERT DELAYED to update log if
sql_log_update = 0.
Fixed problem with
Added possible character sets and time zone to
SHOW VARIABLES output.
Fixed bug in locking code that could result in locking problems with concurrent inserts under high load.
Fixed a problem with
DELETE of many rows on a table with compressed keys where MySQL scanned the index to find the rows.
Fixed problem with
CHECK TABLE on table with deleted keyblocks.
Fixed a bug in reconnect (at the client side) where it didn't free memory properly in some contexts.
Fixed problems in update log when using
LAST_INSERT_ID() to update a table with an
Fixed bug when using
LOAD DATA INFILE on a table with
MyISAM to be faster when inserting keys in sorted order.
EXPLAIN SELECT ... now also prints out whether MySQL needs to create a temporary table or use file sorting when resolving the
Added optimization to skip
ORDER BY parts where the part is a constant expression in the
WHERE part. Indexes can now be used even if the
ORDER BY doesn't match the index exactly, as long as all the unused index parts and all the extra
ORDER BY columns are constants in the
WHERE clause. See Section 7.4.3, “How MySQL Uses Indexes”.
DELETE on a whole unique key in the
WHERE part are now faster than before.
RAID_CHUNKSIZE to be in 1024-byte increments.
Fixed core dump in