SQL 查询时间段内的时间

declare @dt1 as datetime
declare @dt2 as datetime
set @dt1 = \'2008-01-01\'
set @dt2 = \'2009-01-01\'
 
;with t
as
(select @dt1 as y
 union all
 select dateadd(m,1,y) from t where y <@dt2)
select * from t