1:
create event myDelete
on schedule every 1 minute starts timestamp '2011-7-5 10:36:00'
do update ju_award set authen=0 where starttime < now()
创建定时任务myDelete,每隔一分钟执行一次,开始于'2011-7-5 10:36:00', 对表ju_award的每一条记录,如果
满足starttime < now(),就做修改:authen=0
2:
select * from ju_award where (select timediff(endtime, starttime) from ju_award )<'00:30:00'
从表ju_award中选中满足此条件的记录:endtime-starttime的值小于'00:30:00'
3:
select * from ju_award where (select timediff(now(), endtime) from ju_award) > '00:00:00' and flag = 0
从表ju_award中选中满足此条件的记录:now()-endtime>'00:00:00' 并且flag=0
4:
create event myDelete
on schedule every 10 minute starts timestamp '2011-7-5 10:36:00'
do update ju_award set authen=0 where (select timediff(now(), endtime) from ju_award) > '00:00:00' and flag = 0
创建定时任务myDelete,每隔十分钟执行一次,开始于'2011-7-5 10:36:00', 对表ju_award的每一条记录,如果
满足now-endtime>'00:00:00' 并且flag=0,就做修改:authen=0
5:
create event myDelete
on schedule every 1 hour starts timestamp '2011-7-5 10:36:00'
do update ju_award set authen=0 where now()>endtime and flag = 0
创建定时任务myDelete,每隔一小时执行一次,开始于'2011-7-5 10:36:00', 对表ju_award的每一条记录,如果
满足now>endtime(即endtime过期) 并且flag=0,就做修改:authen=0