**#查看event_scheduler 是否开启 on或者1表示开启**
Show VARIABLES like "event_scheduler";
**#开启定时器**
SET GLOBAL event_scheduler=1;
**#查看 我的定时任务**
select * from mysql.event;
**#删除某个定时任务**
drop EVENT event_order_goods_categories;
**#创建定时任务 每天执行一次 凌晨1点执行**
drop event if EXISTS event_order_goods_categories;
create event event_order_goods_categories on schedule
every 1 day starts '2015-12-04 01:00:00'
do call update_order_categories();#执行存储过程