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
自用
select tag, concat(round(avg(if(timestampdiff(second, start_time, end_time)>duration,1, timestampdiff(second, start_time, end_time)/duration)*100), 2), '%')
as avg_play_progress
from tb_user_video_log join tb_video_info using(video_id)
group by tag
having substring_index(avg_play_progress, '%', 1) > 60
order by avg_play_progress desc