sql server多行資料拼接

1.表結構

id	type	productCode
1	鉛筆	0001
2	鉛筆	0002
3	鉛筆	0003
4	鋼筆	0004
5	鋼筆	0005
6	鋼筆	0004
7	圓珠筆	0007
8	圓珠筆	0008
9	圓珠筆	0007

2.自訂函數fun

GO
/****** Object:  UserDefinedFunction [dbo].[fun]    Script Date: 11/22/2011 16:09:45 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
Create function [dbo].[fun](@type nvarchar(10))
returns nvarchar(200)
as
begin
    declare @re nvarchar(200)
    declare @code nvarchar(200)
    set @re=''
    set @code=''
    select @re=@re+productCode+',' from T where type=@type group by productCode

    select @re=left(@re, len(@re)-1)
    return @re
end

3.查詢語句

select type,dbo.fun(type) from (select distinct type from T) A

結果:

鋼筆   0004,0005
鉛筆   0001,0002,0003
圓珠筆   0007,0008