FROM_DAYS(0) now returns "0000-00-00".
DATE_FORMAT(), PM and AM were swapped
for hours 00 and 12.
Extended the default maximum key size to 256.
Fixed bug when using
GROUP BY with many tables.
ENUM field that is not declared
NOT NULL has
the default value. (Previously, the default value was the
first enumeration value.)
Fixed bug in the join optimizer code when using many part
keys on the same key:
Added some tests to the table order optimizer to get some
SELECT ... FROM many_tables
Added a retry loop around
possibly fix some problems on some Linux machines.
This is a translation of the MySQL Reference Manual that can be found at dev.mysql.com. The original Reference Manual is in English, and this translation is not necessarily as up to date as the English version.