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 t1.video_id video_id, round(avg(case when timestampdiff(second, t1.start_time, t1.end_time) >= t2.duration then 1 else 0 end), 3) avg_comp_play_rate from tb_user_video_log t1 inner join tb_video_info t2 on t1.video_id = t2.video_id where YEAR(t1.start_time) = 2021 and YEAR(t1.end_time) = 2021 group by t1.video_id order by avg_comp_play_rate desc
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