t-sql不显示列中的任何内容

Question

以下函数不会在colums中返回任何内容，即使进入调试模式它也会像值一样接... 有人可以帮帮我吗？

显然，表[NewBiz.Labirinto] .dbo.ElencoTipiEsercizio上的select查询工作并返回colums 2 colums： id | DVR 1 | 1,2,3,4 2 | 1,3 4 | 1,2,4,5,6

USE [NuLab]
GO
/****** Object:  UserDefinedFunction [dbo].[fun_CSVToTable]    Script Date: 29/01/2015 17:17:12 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER Function [dbo].[fun_CSVToTable] 
(
    @Delimeter varchar(10)
)
RETURNS @RET1 TABLE (id integer, dvr VARCHAR(50))
AS
BEGIN

    DECLARE @RET TABLE(id integer, dvr VARCHAR(50))
    DECLARE @RET2 TABLE(id integer, dvr VARCHAR(50))
    DECLARE @ID integer 
    DECLARE @LIST varchar(50)

    DECLARE @START BIGINT
    DECLARE @LASTSTART BIGINT
    DECLARE @VAR integer 

    set @ID = 0
    set @VAR = 1


    WHILE(@VAR IS NOT NULL)
    BEGIN
        IF (@ID > (select MAX(id) from [NewBiz.Labirinto].dbo.ElencoTipiEsercizio)) BREAK
        set @LIST=(select dvr from [NewBiz.Labirinto].dbo.ElencoTipiEsercizio where [NewBiz.Labirinto].dbo.ElencoTipiEsercizio.id = @ID)
        SET @LASTSTART=0
        IF LTRIM(RTRIM(@LIST))='' RETURN

        SET @START=CHARINDEX(@Delimeter,@LIST,0)

        IF @START=0
        INSERT INTO @RET(id, dvr) VALUES(@ID, SUBSTRING(@LIST,0,LEN(@LIST)+1))

        WHILE(@START >0)
        BEGIN
            INSERT INTO @RET(id, dvr) VALUES(@ID, SUBSTRING(@LIST,@LASTSTART,@START-@LASTSTART))
            SET @LASTSTART=@START+1
            SET @START=CHARINDEX(@Delimeter,@LIST,@START+1)

            IF(@START=0)
            INSERT INTO @RET(id, dvr) VALUES(@ID, SUBSTRING(@LIST,@LASTSTART,LEN(@LIST)+1))
        END

        INSERT INTO @RET2 SELECT * FROM @RET


        SET @ID = (select min(id) from [NewBiz.Labirinto].dbo.ElencoTipiEsercizio where id > @ID)

    END
    INSERT INTO @RET1 SELECT * FROM @RET2

    RETURN 
END