mysql - 如何使用触发器mysql更新表

Question

我有两个表，t1 和 t2。 我正在尝试创建一个触发器，以便当 t1 获得更新时，我检查更新的内容是否为 t1.nStatus。

如果 t1.nStatus = 2，我需要为所有等于 t1.nId 的 t2.customer_Id 设置 t2.bEnabled = 1

CREATE OR REPLACE TRIGGER change AFTER UPDATE ON t1
    FOR EACH ROW
BEGIN
    IF NEW.nStatus = 2 THEN
        UPDATE t2 SET bEnabled = 1 WHERE t2.immobile_id = NEW.nId;
    END IF;
END;

我得到的错误:

1 queries executed, 0 success, 1 errors, 0 warnings

Query: CREATE OR REPLACE trigger changeStatusImmobile after UPDATE on immobile for each row begin IF NEW.nStatus = 2 then UPDATE select...

Error Code: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 5

Execution Time : 0 sec Transfer Time : 0 sec Total Time : 0.146 sec

你有什么想法吗？

Answer 1

尝试设置分隔符

DELIMITER $$

CREATE OR REPLACE TRIGGER change AFTER UPDATE ON t1
    FOR EACH ROW
BEGIN
    IF NEW.nStatus = 2 THEN
        UPDATE t2 SET bEnabled = 1 WHERE t2.immobile_id = NEW.nId;
    END IF;
END$$

DELIMITER ;