高手都来看下,这样的要求,SQL语句能实现吗?解决方案

create table test(单号 varchar(100),日期 varchar(100))insert into testselect'00001','2007/11/1' unionselect'00001','2007/11/2' union select'00001','2007/11/5' unionselect'00002','2007/11/2' union select'00002','2007/11/3'gocreate function getDates(@id varchar(100))returns varchar(1000)asbegin    declare @ret varchar(1000)    set @ret=''    select @[email protected]+日期+',' from test        where [email protected]    if(len(@ret)>1)        set @ret=left(@ret,len(@ret)-1)    return @retendgoselect 单号,dbo.getDates(单号) from testgroup by 单号drop table testdrop function dbo.getDates/*00001    2007/11/1,2007/11/2,2007/11/500002    2007/11/2,2007/11/3*/
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SQL code
原始数据如下: /*单号               日期 00001           2007/11/1 00001           2007/11/2 00001           2007/11/5 00002           2007/11/2 00002           2007/11/3 要得到如下结果: 单号               日期 00001           2007/11/1,2007/11/2,2007/11/5 00002           2007/11/2,2007/11/3*/create table tb(单号 varchar(8), 日期 varchar(20))insert tb select '00001', '2007/11/1' union all select '00001', '2007/11/2' union all select '00001', '2007/11/5' union all select '00002', '2007/11/2' union all select '00002', '2007/11/3'gocreate function fn_Test(@ID varchar(8))returns varchar(8000)asbegin    declare @result varchar(8000)    set @result=''    select @[email protected]+','+日期 from tb where [email protected]    return stuff(@result,1,1,'')endgoselect 单号,dbo.fn_Test(单号) from tb group by 单号drop function dbo.fn_Testdrop table tb/*单号       -------- ------------------------00001    2007/11/1,2007/11/2,2007/11/500002    2007/11/2,2007/11/3(2 row(s) affected)*/
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SQL code
create function dbo.Test(@billno varchar(10))returns varchar(100)ASBEGIN    declare @result varchar(100)    set @result=''    select @[email protected]+[日期]+',' from tableName    if @result<>'' set @result=left(@result,len(@result)-1)    return @resultEND--使用下面的查詢可獲得結果select [單號],dbo.Test([單號]) From TableName group by [單號]