题解 | #平均播放进度大于60%的视频类别#

select tag,
concat(round(sum(if(timestampdiff(second,start_time,end_time)>=duration,duration,timestampdiff(second,start_time,end_time)))/sum(duration)*100,2),'%') avg_play_progress
from tb_user_video_log a join tb_video_info b on a.video_id=b.video_id
group by tag
having 
sum(if(timestampdiff(second,start_time,end_time)>=duration,duration,timestampdiff(second,start_time,end_time)))/sum(duration)*100 > 60
order by 2 desc