Har*_*Joy 75
可能与:
SELECT count(*) FROM `table` 
where 
    created_at>='2011-03-17 06:42:10' and created_at<='2011-03-17 07:42:50';
或使用between:
SELECT count(*) FROM `table` 
where 
    created_at between '2011-03-17 06:42:10' and '2011-03-17 07:42:50';
您可以根据需要更改日期时间.可以使用curdate()或now()获得所需的日期.
select * from yourtable where created < now() and created > '2011-04-25 04:00:00'
select * from yourtable 
   where created < now() 
     and created > concat(curdate(),' 4:30:00 AM')