mysql触发器使用实例

DELIMITER $$



USE `db`$$



DROP TRIGGER `member_walletinit_trigger`$$



CREATE TRIGGER `member_walletinit_trigger` AFTER INSERT ON `member` 

    FOR EACH ROW BEGIN

        SET @count = (SELECT COUNT(mem_no) FROM `wallet` WHERE mem_no = NEW.reg_no);  

    IF @count = 0 THEN  

      INSERT INTO wallet (mem_no)VALUE(NEW.reg_no);

    END IF;

    END;

$$



DELIMITER ;