mysql 定时器，定时删除几天后的数据

300秒执行一次，删除字段为time的超过3天的记录。

// An highlighted block
use xxx;
DELIMITER $$
DROP EVENT IF EXISTS deleteLog;
CREATE EVENT  deleteLog
ON SCHEDULE EVERY 300 SECOND
ON COMPLETION PRESERVE
DO BEGIN
  delete from hfc2.om_log where TO_DAYS(now())-TO_DAYS(time)>3;
END$$
DELIMITER ;

借鉴了CSDN里面的某位，链接丢失。