MySQL 触发器

MySQL 触发器

DROP  TRIGGER  IF  EXISTS `nw_sn_info_update`;
DELIMITER ;;
CREATE  TRIGGER `nw_sn_info_update` AFTER  UPDATE  ON `nw_sn_info`  FOR EACH ROW  begin
replace  into nw_sn_info_trigger  set auto_id =new.auto_id;
end
;;
DELIMITER ;

DROP  TRIGGER  IF  EXISTS `nw_sn_info_delete`;
DELIMITER ;;
CREATE  TRIGGER `nw_sn_info_delete` BEFORE  DELETE  ON `nw_sn_info`  FOR EACH ROW  begin
delete  FROM nw_sn_info_trigger  where auto_id =old.auto_id;
end
;
DELIMITER ;


DROP  TRIGGER  IF  EXISTS `nw_sn_status_update`;
DELIMITER ;;
CREATE  TRIGGER `nw_sn_status_update` AFTER  UPDATE  ON `nw_sn_status`  FOR EACH ROW  begin
replace  into nw_sn_status_trigger  set product_sn =new.product_sn;
end
;;
DELIMITER ;


DROP  TRIGGER  IF  EXISTS `nw_sn_status_delete`;
DELIMITER ;;
CREATE  TRIGGER `nw_sn_status_delete` BEFORE  DELETE  ON `nw_sn_status`  FOR EACH ROW  begin
delete  FROM nw_sn_status_trigger  where product_sn =old.product_sn;
end
;;
DELIMITER ;