Question

我有一个带有列的简单表 - id，name和salary。

我希望使用存储过程获取id的名称，工资和年薪。

我想过创建一个这样的简单存储过程：

CREATE PROCEDURE spGetDetails
    @id int,
    @annualSal int out
AS
BEGIN
    SELECT 
        name, salary, 
        @annualSal = (salary * 12) 
    FROM 
        tblPrac 
    WHERE 
        id = @id
END

但是我收到了一个错误：

为变量赋值的SELECT语句不能与数据检索操作结合使用

如果已经问过这个qs，请给我链接，我会删除这个qs。我搜索了但我想我错过了关键词。感谢

Answer 1

您不需要OUTPUT参数。您可以像这样查询 -

CREATE PROCEDURE spGetDetails
    @id int
    AS
    BEGIN
    SET NOCOUNT ON
    SELECT Name, Salary, (Salary*12) AS AnnualSalary FROM tblPrac WHERE id = @id
    END

Answer 2

你有混合的东西，所以你需要在两种可能性之间进行选择

CREATE PROCEDURE spGetDetails
  @id int,
  @name varchar(100) out,
  @salary decimal(16,2) out,
  @annualSal decimal(16,2) out
AS
BEGIN
   set nocount on

   SELECT  @name = name, 
           @salary = salary, 
           @annualSal = (salary * 12) 
   FROM    tblPrac 
   WHERE   id = @id
END

或者

CREATE PROCEDURE spGetDetails
  @id int
AS
BEGIN
   set nocount on

   SELECT  name, 
           salary, 
           (salary * 12) as anualSal
   FROM    tblPrac 
   WHERE   id = @id
END

Answer 3

您需要存储数据并分离操作（正如错误消息所解释的那样）：

CREATE PROCEDURE spGetDetails
(
    @id int,
    @annualSal int out
)
AS
BEGIN;

    SET NOCOUNT ON;

    DECLARE @DataSource TABLE
    (
        [name] VARCHAR(12)
       ,[salary] DECIMAL(9,2)
    );

    INSERT INTO @DataSource ([name], [salary])
    SELECT  name, salary
    FROM tblPrac 
    WHERE id = @id;

    SELECT [name]
          ,[salary]
    FROM @DataSource;

    SELECT @annualSal = 12 * [salary]
    FROM @DataSource;

    SET NOCOUNT OFF;

    RETURN;
END;

如何在SQL Server中将输出参数与其他列名一起使用

3 个答案: