列出选定月份的时间序列

declare @ksrq datetime
set @ksrq='2018-12-1'

select dateadd(d,a.number,@ksrq) as 日期 
from master..spt_values a where type = 'P' 
and dateadd(d,a.number,@ksrq) >= convert(varchar(7),@ksrq,120)+'-01'
and dateadd(d,a.number,@ksrq) < convert(varchar(7),dateadd(mm,1,@ksrq),120)+'-01'

修改@ksrq的值就可以