参考：
http://www.cnblogs.com/repository/archive/2011/01/18/1938418.html
select convert(varchar(10),c.[STARTSPECDAY],120),
(select [LeaveName]+‘ ‘
from
(
select convert(varchar(10),a.[STARTSPECDAY],120) STARTSPECDAY,a.[LeaveName]
from [test].[dbo].[View_GetSPDay] as a
) as b
where convert(varchar(10),c.[STARTSPECDAY],120)=convert(varchar(10),b.[STARTSPECDAY],120) for xml path(‘‘)
) as course_name
from [test].[dbo].[View_GetSPDay] as c
group by convert(varchar(10),c.[STARTSPECDAY],120)