题解 | #平均播放进度大于60%的视频类别#
平均播放进度大于60%的视频类别
http://www.nowcoder.com/practice/c60242566ad94bc29959de0cdc6d95ef
select tag,concat(round(avg(case when TIMESTAMPDIFF(second, start_time, end_time)<=duration
then TIMESTAMPDIFF(second, start_time, end_time)/duration
else 1 end)*100,2),'%') as AVG_play_progress
from tb_user_video_log vid
join tb_video_info info
on vid.video_id=info.video_id
group by tag
having SUBSTRING_INDEX(AVG_play_progress,"%",1)>60
order by AVG_play_progress desc
