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MyISAM
involving REPLACE ... SELECT ...
which could
give a corrupted table.
myisamchk
where it incorrectly reset the
AUTO_INCREMENT
value.
DISTINCT
on HEAP
temporary tables to use hashed
keys to quickly find duplicated rows. This mostly concerns queries of
type SELECT DISTINCT ... GROUP BY ...
. This fixes a problem where
not all duplicates were removed in queries of the above type. In
addition, the new code is MUCH faster.
IF NOT EXISTS
clause to CREATE DATABASE
.
--all-databases
and --databases
options to mysqldump
to allow dumping of many databases at the same time.
DECIMAL()
index in MyISAM
tables.
mysqladmin shutdown
on a local connection, mysqladmin
now waits until the PID file is gone before terminating.
COUNT(DISTINCT ...)
queries.
myisamchk
works properly with RAID tables.
LEFT JOIN
and key_field IS NULL
.
net_clear()
which could give the error Aborted
connection
in the MySQL clients.
USE INDEX (key_list)
and IGNORE INDEX (key_list)
as
parameters in SELECT
.
DELETE
and RENAME
should now work on RAID
tables.