【引用】MySQL定时任务

定时任务
查看event是否开启: show variables like '%sche%';
将事件计划开启: set global event_scheduler=1;
关闭事件任务: alter event e_test ON COMPLETION PRESERVE DISABLE;
开户事件任务: alter event e_test ON COMPLETION PRESERVE ENABLE;

简单实例.
创建表 CREATE TABLE test(endtime DATETIME);

创建存储过程test
     CREATE PROCEDURE test ()
     BEGIN
          update examinfo SET endtime = now() WHERE id = 14;
     END;

     创建event e_test
     CREATE EVENT if not exists e_test
          on schedule every 30 second
          on completion preserve
     do call test();

     每隔30秒将执行存储过程test,将当前时间更新到examinfo表中id=14的记录的endtime字段中去.