选择语句作为存储过程

Question

我有这个查询,我想用作存储过程:

  SELECT ISNULL(P.firstname, s.firstname) AS Expr1,ISNULL(P.lastname,
  s.lastname) AS Expr2 FROM comment AS C LEFT OUTER JOIN professor AS P ON P.ID =   

  C.PID LEFT OUTER JOIN student AS s ON s.ID = C.SID

  WHERE (C.VID = @VID)

它应该返回Expr1和Expr2的值

我试图宣布输入和输出,但没有运气

请帮忙

编辑:

  CREATE PROCEDURE [dbo].[GetDepartmentName]
  @ID int,
  @fName varchar(50) OUTPUT
   @lName varchar(50) OUTPUT
  AS


SELECT @fName=COALESCE(p.firstname, s.firstname)   @lName=COALESCE(p.lastname,     

   s.lastname)as 
  FROM comment c
  LEFT JOIN Professor p
    ON c.pid = p.id
  LEFT JOIN Student s
    ON c.sid = s.id
 WHERE c.vid = @ID

Answer 1

ALTER PROCEDURE [dbo].[GetDepartmentName]
  @ID    INT,
  @fName varchar(50) OUTPUT, -- added missing comma here
  @lName varchar(50) OUTPUT
AS
BEGIN
  SET NOCOUNT ON;

  SELECT  
    @fName = COALESCE(p.firstname, s.firstname), -- added missing comma here
    @lName = COALESCE(p.lastname,  s.lastname)   -- removed strange "as" here 
  FROM dbo.comment AS c
  LEFT OUTER JOIN dbo.Professor AS p
    ON c.pid = p.id
  LEFT OUTER JOIN dbo.Student AS s
    ON c.sid = s.id
  WHERE c.vid = @ID;
END
GO