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 ;