MySQL Reference Manual :: C.1 Changements de la version 5.0.0 (Développement)

C.1. Changements de la version 5.0.0 (Développement)

The following changelog shows what has already been done in the 5.0 tree:

Basic support for stored procedures (SQL:2003 style). See Chapitre 20, Procédures stockées et fonctions.
Added SELECT INTO list_of_vars, which can be of mixed, that is, global and local type. See Section 20.1.6.3, « Syntaxe de SELECT ... INTO ».
Removed the update log. It is fully replaced by the binary log. If the MySQL server is started with --log-update, it will be translated to --log-bin (or ignored if the server is explicitly started with --log-bin), and a warning message will be written to the error log. Setting SQL_LOG_UPDATE will silently set SQL_LOG_BIN instead (or do nothing if the server is explicitly started with --log-bin).
User variable names are now case insensitive: if you do SET @a=10; then SELECT @A; will now return 10. Case sensitivity of a variable's value depends on the collation of the value.

For a full list of changes, please refer to the changelog sections for each individual 5.0.x release.