sql stuff拼接字符串的用法

要把图2显示成图1的方法：要用到stuff函数，并且图1显示的时间有所截断。

图2sql，只是很普通的sql

select * from Access_Statistics where SFZH='' and CONVERT(varchar(), SKSJ, )='' order by SKSJ

图1sql，用了stuff拼接

select dz.XM as 姓名,dz.JSZH as 卡号,[刷卡时间]=stuff((select ','+substring(CONVERT(varchar(), SKSJ, ),,)
 from Access_Statistics  where SFZH=mj.SFZH and
 CONVERT(varchar(),SKSJ, )='' and SFZH='' order by SKSJ for xml path('') ), , , '')
 from Access_Statistics mj
inner join Readers dz on dz.SFZH = mj.SFZH
inner join XX04 bj on dz.BJBH=bj.BJBH
where CONVERT(varchar(), mj.SKSJ, )='' and mj.SFZH=''
group by mj.SFZH,dz.XM,dz.JSZH