MySQL CREATE FUNCTION 语法
我正在尝试在 MySQL 中创建一个函数:
I am trying to create a function in MySQL:
这里是SQL代码:
CREATE FUNCTION F_Dist3D (x1 decimal, y1 decimal)
RETURNS decimal
DETERMINISTIC
BEGIN
DECLARE dist decimal;
SET dist = SQRT(x1 - y1);
RETURN dist;
END;
我收到以下错误:
#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 10
我在 phpMyAdmin 中运行这个 create 语句.这个功能有什么问题?
I am running this create statement in phpMyAdmin. What is wrong with this function?
推荐答案
你必须用 $$
之类的东西覆盖你的 ;
分隔符,以避免这种错误.
You have to override your ;
delimiter with something like $$
to avoid this kind of error.
在函数定义之后,您可以将分隔符重新设置为 ;
.
After your function definition, you can set the delimiter back to ;
.
这应该有效:
DELIMITER $$
CREATE FUNCTION F_Dist3D (x1 decimal, y1 decimal)
RETURNS decimal
DETERMINISTIC
BEGIN
DECLARE dist decimal;
SET dist = SQRT(x1 - y1);
RETURN dist;
END$$
DELIMITER ;
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