select convert(varchar(10),dateadd(dd,number,convert(varchar(8),getdate(),120)+‘01‘),120) as dt from master..spt_values where type=‘P‘ and dateadd(dd,number,convert(varchar(8),getdate(),120)+‘01‘)<=dateadd(dd,-1,convert(varchar(8),dateadd(mm,1,getdate()),120)+‘01‘)
原文：http://www.cnblogs.com/shenyixin/p/5511084.html