SQL 查询给出下面提到的错误

Question

我有一个 sql 查询

CREATE DEFINER=`root`@`localhost` TRIGGER `trigger_vacation_mode` AFTER UPDATE ON `oc_ms_seller`
FOR EACH ROW
BEGIN
 if NEW.vacation_mode <> OLD.vacation_mode THEN

    UPDATE `oc_product` AS p
    SET p.date_modified = NOW()
    WHERE p.product_id IN (SELECT DISTINCT product_id FROM `oc_ms_seller` AS ms join
    `oc_ms_product` AS mp ON ms.seller_id = mp.seller_id)

 END IF;
END;

执行时出现此错误

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'END IF
END' at line 11

Answer 1

在内部查询 UPDATE... 的末尾添加一个 ;。

您需要在 IF 语句中终止内部查询。

CREATE DEFINER=`root`@`localhost` TRIGGER `trigger_vacation_mode` AFTER UPDATE ON `oc_ms_seller`
FOR EACH ROW
    BEGIN
        if NEW.vacation_mode <> OLD.vacation_mode THEN

            UPDATE `oc_product` AS p
            SET p.date_modified = NOW()
            WHERE p.product_id IN (SELECT DISTINCT product_id FROM `oc_ms_seller` AS ms join
                `oc_ms_product` AS mp ON ms.seller_id = mp.seller_id);
        END IF;
    END;

Answer 2

您需要覆盖默认分隔符 (;)

DELIMITER //

CREATE DEFINER=`root`@`localhost` TRIGGER `trigger_vacation_mode` AFTER UPDATE ON `oc_ms_seller`
FOR EACH ROW
BEGIN
 if NEW.vacation_mode <> OLD.vacation_mode THEN

    UPDATE `oc_product` AS p
    SET p.date_modified = NOW()
    WHERE p.product_id IN (SELECT DISTINCT product_id FROM `oc_ms_seller` AS ms join
    `oc_ms_product` AS mp ON ms.seller_id = mp.seller_id);

 END IF;
END//

DELIMITER ;

DELIMITER 语句将分号 (;) 的标准分隔符更改为另一个（此处为 //）。

SQL 查询给出下面提到的错误

SQL query giving error mentioned below

mysql

sql

syntax-error