将传入存储过程中的字符串截取调用

/****** Object:  UserDefinedFunction [dbo].[f_split]    Script Date: 04/16/2015 14:35:29 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO


create   function   [dbo].[f_split](@c   varchar(max),@split   varchar(2))  
returns   @t   table(col   varchar(200))  
as  
    begin  
   
      while(charindex(@split,@c)<>0)  
        begin  
          insert   @t(col)   values   (substring(@c,1,charindex(@split,@c)-1))  
          set   @c   =   stuff(@c,1,charindex(@split,@c),'')  
        end  
      insert   @t(col)   values   (@c)  
      return  
    end  
GO

--调用--select @Sum=SUM(xxxx) from XXX  where ID in (select * from f_split(@ID,','))