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 uv.video_id, round(sum(case when timestampdiff(second,start_time,end_time)>=duration then 1 else 0 end )/count(start_time),3) avg_comp_play_rate from tb_user_video_log uv left join tb_video_info vi on uv.video_id = vi.video_id where year(start_time) = 2021 group by uv.video_id order by avg_comp_play_rate desc
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