如何在phpmyadmin中创建MySQL触发器 [英] How to create a MySQL trigger in phpmyadmin

问题描述

我想在MySQL中创建一个触发器.我运行以下命令:

I want to create a trigger in MySQL. I run following commands:

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中运行以上SQL时，出现此错误:

But when I run above SQL in phpmyadmin I get this error:

#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 

这是怎么了?如何创建触发器?

what's wrong here? How do I create a trigger?

推荐答案

这是由于未像通过CLI那样临时更改定界符引起的.尝试之一:

This is caused by not changing the delimiters temporarily as you did via CLI. Try either:

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 ;

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