sql server多行資料拼接的執行個體方法

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 複製代碼 代碼如下: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