CREATE EVENT e_test
ON SCHEDULE EVERY 1 DAY
STARTS CURRENT_TIMESTAMP + INTERVAL 5 DAY
ENDS CURRENT_TIMESTAMP + INTERVAL 1 MONTH
DO TRUNCATE TABLE test.aaa;
[ON COMPLETION [NOT] PRESERVE]可以设置这个事件是执行一次还是持久执行,默认为NOT PRESERVE。
8) 每天定时清空test表(只执行一次,任务完成后就终止该事件):
DELIMITER $$
CREATE EVENT e_test
ON SCHEDULE EVERY 1 DAY
ON COMPLETION NOT PRESERVE
DO TRUNCATE TABLE test.aaa;
END
$$
DELIMITER ;
9)每天的 10点执行一次update_test的存储过程
DELIMITER $$
CREATE EVENT event_update_test
ON SCHEDULE EVERY 1 DAY
STARTS '2015-07-31 10:00:00'
ON COMPLETION PRESERVE
ENABLE
DO
BEGIN
call update_test();
END
$$
DELIMITER ;
修改事件(ALTER EVENT)
ALTER EVENT event_name
[ON SCHEDULE schedule]
[RENAME TO new_event_name]
[ON COMPLETION [NOT] PRESERVE]
[COMMENT 'comment']
[ENABLE | DISABLE]
[DO sql_statement]
1) 临时关闭事件
ALTER EVENT e_test DISABLE;
2) 开启事件
ALTER EVENT e_test ENABLE;
3) 将每天清空test表改为5天清空一次:
ALTER EVENT e_test
ON SCHEDULE EVERY 5 DAY;
删除事件(DROP EVENT)
语法很简单,如下所示:
DROP EVENT [IF EXISTS] event_name
例如删除前面创建的e_test事件
DROP EVENT e_test;
当然前提是这个事件存在,否则会产生ERROR 1513 (HY000): Unknown event错误,因此最好加上IF EXISTS
DROP EVENT IF EXISTS e_test;