MySQL数据库有没有触发器??

Feature  MySQL version
------------------------------------
Subqueries         4.1
Foreign keys       5.1 (3.23 with InnoDB)
Views              5.1
Stored procedures  5.0
Triggers           5.1
Unions             4.0
Full outer join    5.1
Constraints        5.1
Cursors            5.0
R-trees            4.1 (for MyISAM tables)
Inherited tables   Not planned
Extensible type system  Not planned