MySQL創建事件

DELIMITER //
CREATE EVENT fill_NUll_in_evalmanager 
ON SCHEDULE EVERY 1 DAY STARTS '2019-12-18 05:58:00' 
ON COMPLETION  PRESERVE
DO 
BEGIN
UPDATE eval_fundmanager SET ManagerName= '0' WHERE UpdateTime > DATE_SUB(NOW(), INTERVAL 18 HOUR) AND ManagerName IS NULL;

END; 
//
DELIMITER ;