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 video_id ,ROUND(AVG(if(TIMESTAMPDIFF(SECOND,start_time,end_time)>=duration,1,0)),3) AS avg_comp_play_rate from tb_user_video_log JOIN tb_video_info USING(video_id) where year(start_time)=2021 group by video_id ORDER BY avg_comp_play_rate DESC
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