Question

我尝试在成功创建后更改存储过程。

DELIMITER $$
ALTER PROCEDURE `purchaseItem`(
      IN productID INT, 
      IN quantity INT,  
      IN memID INT,
      OUT stat INT)
BEGIN
            DECLARE qnty INT;
            DECLARE price decimal(10,2);
            DECLARE description VARCHAR(500);

            SET qnty = (SELECT p_Unit FROM product WHERE p_ID = productID);
            IF qnty >= quantity && qnty != 0 THEN
                SELECT p_Price INTO price FROM product WHERE p_ID = productID;
                                SELECT p_Desc INTO description FROM product WHERE p_ID = productID;
                INSERT INTO purchase VALUES 
                      (NULL, productID, quantity, price, description , memID, 0, NULL);
                UPDATE product 
                SET p_Unit = (qnty - quantity) 
                WHERE p_ID = productID;
                SET stat = 0;
            ELSE
                SET stat = 1;
            END IF;


    END$$

DELIMITER ;

但是，在尝试更改SP时出现以下错误。

#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 '( IN productID INT, IN quantity INT, IN memID INT, ' at line 1

有人可以指出我在哪里做错了。谢谢！

Answer 1

根据§13.1.4 "ALTER PROCEDURE Syntax" in the MySQL 5.6 Reference Manual

[...]您无法使用[ALTER PROCEDURE]语句更改存储过程的参数或正文;要进行此类更改，您必须使用DROP PROCEDURE和CREATE PROCEDURE删除并重新创建该过程。

Answer 2

由于您无法使用ALTER PROCEDURE更改过程主体，因此必须对其进行DROP并重新创建或使用一些GUI工具进行EDIT / UPDATE Mysql存储过程。

ex. alter procedure employeetest sql security invoker;

注意*您可以更改安全类型，如..INVOKER或DEFINER

GUI工具免费软件：TOAD for Mysql.

Mysql：更改时存储过程中出现＃1064错误

2 个答案: