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 ;