Question

我想在MySQL中创建一个触发器。我运行以下命令：

mysql> delimiter //
mysql> CREATE TRIGGER before_insert_money BEFORE INSERT ON money
    -> FOR EACH ROW
    -> BEGIN
    -> UPDATE accounts SET balance=10.0;
    -> END;
    -> //
Query OK, 0 rows affected (0.19 sec)

但是当我在phpmyadmin中运行SQL时，我收到此错误：

#1064 - 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 '' at line 4

这里有什么问题？如何创建触发器？

Answer 1

这是因为您没有像通过CLI那样暂时更改分隔符。尝试：

CREATE TRIGGER before_insert_money BEFORE INSERT ON money
FOR EACH ROW UPDATE accounts SET balance=10.0;

或

delimiter //
CREATE TRIGGER before_insert_money BEFORE INSERT ON money
FOR EACH
ROW
BEGIN
    UPDATE accounts SET balance=10.0;
END;
//
delimiter ;

请参阅：This question和this question。

如何在phpmyadmin中创建MySQL触发器

1 个答案: