题解 | #各个视频的平均完播率#
各个视频的平均完播率
https://www.nowcoder.com/practice/96263162f69a48df9d84a93c71045753
select l.video_id, round(sum(case when end_time - start_time >= duration then 1 else 0 end )/count(l.video_id),3) as avg_comp_play_rate from tb_user_video_log as l left join tb_video_info as i on l.video_id=i.video_id where year(end_time)=2021 group by l.video_id order by avg_comp_play_rate desc
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