Question

我有以下代码让我头疼，我需要为数据库创建这个存储过程，但是，由于“AS”处的语法错误，我可以保存它或实现它。我需要知道我做错了什么？

Create PROCEDURE `insert_delete_update` (OUT
 id int,
 level varchar(225),
 action varchar(20)
 )

AS    
BEGIN

SET NOCOUNT ON;

IF @Action = 'Insert'
BEGIN
insert into levels (id, level) values(@id, @level)   
END

IF @Action = 'Select'
BEGIN
select * from levels
END 

IF @Action = 'Update'
BEGIN
UPDATE levels SET
            level =  @level
      WHERE id = @id
END

else IF @Action = 'Delete'
BEGIN
DELETE FROM levels WHERE id = @id
END
END

Answer 1

是的，所以我终于得到了答案。

以下是最终代码：

CREATE DEFINER=`root`@`localhost` PROCEDURE `insert_delete_update`()
BEGIN
Declare  id int;
Declare level varchar(225);
Declare action varchar(20);

Set @Action = 'Insert';
BEGIN
insert into levels (id, level) values(@id, @level);
END;

SET @Action = 'Select';
BEGIN
select * from levels
END ;

SET @Action = 'Update';
BEGIN
UPDATE levels SET
            level =  @level
      WHERE id = @id;
END;

SET @Action = 'Delete';
BEGIN
DELETE FROM levels WHERE id = @id;
END;
END;
END

感谢所有人的帮助！

Answer 2

我已经为您编写了存储过程。你可以使用它，我希望它能解决你的问题。我只是从工作台创建的。

DELIMITER $$
CREATE DEFINER=`root`@`localhost` PROCEDURE `insert_delete_update`(OUT
     id int,
     level varchar(225),
     action varchar(20))
BEGIN
        if @action = 'Insert' THEN
            insert into levels (id, level) values(@id, @level) ;   
        elseif @action = 'Select' THEN
            select * from levels ;
        elseif @action = 'Update' THEN
            UPDATE levels SET
                        level =  @level
                  WHERE id = @id;
        elseif @action = 'Delete' THEN
            DELETE FROM levels WHERE id = @id;
        end if;
    END$$
DELIMITER ;

存储过程，语法错误

2 个答案: