相关疑难解决方法(0)

我构建一个函数,我正在尝试执行它...但是正在发生一些错误

CREATE FUNCTION dbo.Afisho_rankimin(@emri_rest int)
RETURNS int
AS
   BEGIN
       Declare @rankimi int
       Select @rankimi=dbo.RESTORANTET.Rankimi
       From RESTORANTET
       Where  dbo.RESTORANTET.ID_Rest=@emri_rest
       RETURN @rankimi
  END
  GO
    SELECT dbo.Afisho_rankimin(5)AS Rankimi
  GO

执行它时的错误是:

Msg 2714,Level 16,State 3,Procedure Afisho_rankimin,Line 11
数据库中已经有一个名为'Afisho_rankimin'的对象.

而且据说:

找不到列"dbo",或用户定义的函数,或聚合"dbo.Afisho_rankimin",或者名称含糊不清

我被迫在这个函数中放一个@noparameter varchar(1)= null？如何创建一个函数来返回没有参数的表!

ALTER FUNCTION [dbo].[DropDownIndividuals](@noparameter varchar(1)=null)
RETURNS
    @IndividualsList TABLE(
          Case_Number VARCHAR(11)
         ,LastName    VARCHAR(100)
         ,FirstName   VARCHAR(100)
         ,Midlename   VARCHAR(100)
         ,FullName    VARCHAR(100) 
        )
AS  
BEGIN
       INSERT INTO @IndividualsList
       SELECT DISTINCT
       cast(Case_Number as varchar(10))as Case_Number
      ,[Lastname]
      ,[Firstname]
      ,[Middlename]
      ,rtrim([Lastname]+ ' '+ [Firstname]) as FullName
      FROM [MHMODSSQL1P].[ODS].[dbo].[Contact]
      WHERE [LastName] is not null and [FirstName] is not null
      UNION ALL SELECT null,null,null,null,null
      ORDER BY [LastName]

      RETURN 

END;