MySQL定时任务event_MySQL

CREATE TABLE IF NOT EXISTS `log` (  `log_id` int(11) NOT NULL AUTO_INCREMENT COMMENT '记录id',  `user_id` int(11) DEFAULT NULL COMMENT '用户id',  `op` varchar(128) NOT NULL COMMENT '操作类型',  `model` varchar(32) DEFAULT NULL COMMENT '操作模块',  `activity_time` int(10) NOT NULL DEFAULT '0' COMMENT '操作时间',  `data` text COMMENT '数据',  PRIMARY KEY (`log_id`)) ENGINE=MyISAM  DEFAULT CHARSET=utf8 COMMENT='用户日志表' AUTO_INCREMENT=1 ;

CREATE EVENT `e_del_logs` ON SCHEDULE EVERY 1 DAY STARTS '2013-07-30 17:33:43' ON COMPLETION NOT PRESERVE ENABLE DO call p_del_logs(90);

p_del_logsDELIMITER $$---- 存储过程--CREATE PROCEDURE `p_del_logs`(IN `date_inter` int)BEGIN    delete from log where (to_days(now()) - to_days(FROM_UNIXTIME(activity_time)))>=date_inter;END$$DELIMITER ;

1)     SHOW VARIABLES LIKE 'event_scheduler';2)     SELECT @@event_scheduler;3)     SHOW PROCESSLIST;

1)     SET GLOBAL event_scheduler = 1;2)     SET @@global.event_scheduler = 1;3)     SET GLOBAL event_scheduler = ON;4)     SET @@global.event_scheduler = ON;

开启某事件：ALTER EVENT e_del_logs ON COMPLETION PRESERVE ENABLE;关闭某事件：ALTER EVENT e_del_logs ON COMPLETION PRESERVE DISABLE;