oracle：
where a.gmt_modified >= to_date('2017-03-04','yyyy-MM-dd') and a.gmt_modified < to_date('2017-03-5','yyyy-MM-dd')
MySQL：
A.MODIFY_TIME >= DATE_FORMAT('2017-03-31','%Y-%m-%d') AND A.MODIFY_TIME < DATE_FORMAT('2017-04-01','%Y-%m-%d')
WHERE DATE_FORMAT(modify_time, '%Y-%m-%d') = DATE_FORMAT(
DATE_SUB(NOW(), INTERVAL 2 DAY),
'%Y-%m-%d'
)