Question

我正在尝试在由其他两个值组成的存储过程中设置一个值。假设我们有这张桌子

CREATE TABLE [dbo].[Consecutives]
(
        [Consecutives_ID] [INT] IDENTITY(1,1) NOT NULL,
        [Name] [VARCHAR](100) NULL,
        [Value] [INT] NOT NULL,
        [Prefix] [VARCHAR] NOT NULL,
        CONSTRAINT PK_Consecutives PRIMARY KEY (Consecutives_ID)
);

并通过一个存储过程试图创建一个由 prefix + value

组成的值

INSERT INTO [dbo].[Consecutives] ([Name], [Value], [Prefix]) 
VALUES (Users, 50, "USR-")

预期结果将用作另一张表的ID，理论上我们期望的是“ USR-50 ”

在创建的存储过程中，我无法将VARCHAR与INT联接在一起，但是无法将它们串联起来。

这是我的存储过程代码：

CREATE PROCEDURE InsertUser
    (@Name VARCHAR(100),
     @LogIn VARCHAR(100),
     @Pass VARCHAR(100))
AS
    DECLARE @ID VARCHAR(100)

    SET @ID = @ID + (SELECT [dbo].[Consecutives]([Prefix])
                     FROM [dbo].[Consecutives]
                     WHERE Name = 'Usuarios')
                     +
                     (SELECT [dbo].[Consecutives]([value])
                      FROM [dbo].[Consecutives]
                      WHERE Name = 'Usuarios')

    INSERT INTO [dbo].[Users] ([User_ID], [LogIn], [Pass])
    VALUES (@ID, @LogIn, @Pass)

Answer 1

我认为该过程中存在很多错误，请检查以下语法：

CREATE PROCEDURE InsertUser
(
    @Name varchar(100),
    @LogIn varchar(100),
    @Pass varchar(100)
)
AS

DECLARE @ID varchar(100)

SELECT @ID = CAST([Prefix] AS VARCHAR(50)) + 
             CAST([value]  AS VARCHAR(50))
FROM [dbo].[Consecutives]
WHERE Name = @Name)

INSERT INTO [dbo].[Users] ([User_ID], [LogIn], [Pass])
VALUES (@ID,@LogIn,@Pass)

在存储过程中转换值

1 个答案: