1.表结构 idtypeproductCode 1铅笔0001 2铅笔0002 3铅笔0003 4钢笔0004 5钢笔0005 6钢笔0004 7圆珠笔0007 8圆珠笔0008 9圆珠笔0007 2.自定义函数fun 复制代码 代码如下: GO /****** Object: UserDefinedFunction [dbo].
1.表结构id type productCode1 铅笔 00012 铅笔 00023 铅笔 00034 钢笔 00045 钢笔 00056 钢笔 00047 圆珠笔 00078 圆珠笔 00089 圆珠笔 00072.自定义函数fun复制代码 代码如下:GO/****** Object: UserDefinedFunction [dbo].[fun] Script Date: 11/22/2011 16:09:45 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOCreate function [dbo].[fun](@type nvarchar(10))returns nvarchar(200)asbegin 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 @reend3.查询语句select type,dbo.fun(type) from (select distinct type from T) A结果:钢笔 0004,0005铅笔 0001,0002,0003圆珠笔 0007,0008
