CREATE EVENT if not exists e_test on schedule every 30 second on completion preserve do call test();
6、查看event是否開啟: show variables like '%sche%'; 將事件計劃開啟: set global event_scheduler=1; 關閉事件任務: alter event e_test ON COMPLETION PRESERVE DISABLE; 開戶事件任務: alter event e_test ON COMPLETION PRESERVE ENABLE;