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摘要： 24小时内记录（即24*60*6086400秒）$sql="SELECT video_id,count(id)as n FROM `rec_down` WHERE UNIX_TIMESTAMP(NOW())-UNIX_TIMESTAMP(add_time)<=86400 group by video_id order by n desc "; $sql="select a.id,a.title,b.n from video_info a,(".$sql.")b where a.id=b.video_id order by n desc l 阅读全文