需要Mysql存储函数帮助吗

我刚刚开始学习mysql中的存储函数。有人能告诉我下面有什么问题吗

Phpmyadmin说您的SQL语法有错误；检查与您的MySQL服务器版本相对应的手册，了解使用near'返回名称的正确语法； 在第19行结束//

DELIMITER //
DROP FUNCTION IF EXISTS getName //
CREATE FUNCTION getName(type CHAR(10), id int) RETURNS CHAR(50) DETERMINISTIC
BEGIN
    DECLARE NAME CHAR(50);
    CASE type
        WHEN 'offer' THEN 

        SELECT Type_Name INTO NAME FROM otypes WHERE Type_Id = id;          

        WHEN 'service' THEN 

        SELECT ServiceType_Name INTO NAME FROM stypes WHERE ServiceType_Id = id;    

        WHEN 'store' THEN 

        SELECT Store_Name INTO NAME FROM stores WHERE Store_Id = id;    

    END CASE

    return NAME;
END //

---

在

结束格后加分号

：

DELIMITER //
DROP FUNCTION IF EXISTS getName //
CREATE FUNCTION getName(type CHAR(10), id int) RETURNS CHAR(50) DETERMINISTIC
BEGIN
    DECLARE NAME CHAR(50);
    CASE type
        WHEN 'offer' THEN 

        SELECT Type_Name INTO NAME FROM otypes WHERE Type_Id = id;          

        WHEN 'service' THEN 

        SELECT ServiceType_Name INTO NAME FROM stypes WHERE ServiceType_Id = id;    

        WHEN 'store' THEN 

        SELECT Store_Name INTO NAME FROM stores WHERE Store_Id = id;    

    END CASE;
--          ^

    return NAME;
END //

---

在

结束格后加分号

：

DELIMITER //
DROP FUNCTION IF EXISTS getName //
CREATE FUNCTION getName(type CHAR(10), id int) RETURNS CHAR(50) DETERMINISTIC
BEGIN
    DECLARE NAME CHAR(50);
    CASE type
        WHEN 'offer' THEN 

        SELECT Type_Name INTO NAME FROM otypes WHERE Type_Id = id;          

        WHEN 'service' THEN 

        SELECT ServiceType_Name INTO NAME FROM stypes WHERE ServiceType_Id = id;    

        WHEN 'store' THEN 

        SELECT Store_Name INTO NAME FROM stores WHERE Store_Id = id;    

    END CASE;
--          ^

    return NAME;
END //

---

您缺少一个

END CASE

return NAME;

应该是

END CASE;

return NAME;

您缺少一个

END CASE

return NAME;

应该是

END CASE;

return NAME;