MySQL regularly deletes expired data.

Mysql

First step ： Detect whether the event trigger is turned on .

Input show variables like '%event_scheduler%';

If it is OFF, You need to enter the code to open

Turn on event_scheduler sql Instructions ：
SET GLOBAL event_scheduler = ON;
SET @@global.event_scheduler = ON;
SET GLOBAL event_scheduler = 1;
SET @@global.event_scheduler = 1;

After the open , You can edit the event .

 

everyday In the morning am Delete regularly surface test   in 15 Days ago .
CREATE EVENT myevent
ON SCHEDULE EVERY 1 DAY STARTS '2009-03-25 02:00:00'
DO
delete from test where create_time <date_sub(curdate(),interval 15 day);

OK 了 .