asp.net,  c# 时间区间查询，2个时间段查询， sql语句  用于SQLServer（mssql）

方法1

select * from [article]
where [add_time] between '2017-04-01 00:00:00' and '2017-04-20 00:00:00'

方法2

select * from [article]
where [add_time] >= '2017-04-10 00:00:00' and [add_time] <= '2017-04-20 00:00:00'