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 b.video_id, FORMAT(sum(case when timestampdiff(second,start_time,end_time) >=duration then 1 else 0 end)/count(*),3) as avg_comp_play_rate FROM tb_video_info a join tb_user_video_log b ON a.video_id=b.video_id WHERE year(start_time)='2021' GROUP BY b.video_id ORDER BY avg_comp_play_rate desc
