按年/月/日查询数据

今天：
Select * From log Where to_days(cdate) = to_days(now());

昨天：
Select * From log Where to_days( NOW( ) ) - to_days(cdate) <= 1

近7天：
Select * From log Where date_sub(CURDATE(), Interval 7 DAY) <= date(cdate)

近30天：
Select * From log Where date_sub(CURDATE(), Interval 30 DAY) <= date(cdate)

本月：
Select * From log Where date_format(cdate, ‘%Y%m‘ ) = date_format( CURDATE( ) , ‘%Y%m‘ )

本周：
Select * From log Where month(cdate) = month(curdate()) and week(cdate) = week(curdate())

上月：
Select * From log Where period_diff( date_format( now( ),‘%Y%m‘ ) , date_format(cdate,‘%Y%m‘ ) ) =1

今年：
Select * From log Where year( from_unixtime( cdate ) ) = year( curdate() )

本季度：
Select * From log Where quarter( from_unixtime( cdate ) ) = quarter( curdate( ))