Fixed core dump with empty BLOB/TEXT column argument to REVERSE().
Extended /*! */ with version numbers.
Changed SUBSTRING(text FROM pos) to conform to SQL-99. (Before this construct returned the rightmost 'pos' characters.)
Fixed problem with LOCK TABLES combined with DELETE FROM table
Fixed problem that INSERT ... SELECT didn't use BIG_TABLES.
SET SQL_LOW_PRIORITY_UPDATES=# didn't work.
Password wasn't updated correctly if privileges didn't change on: GRANT ... IDENTIFIED BY
Fixed range optimizer bug in SELECT * FROM table_name WHERE key_part1 >= const AND (key_part2 = const OR key_part2 = const).
Fixed bug in compression key handling in ISAM.