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 v.video_id, ROUND(AVG(CASE WHEN TIMESTAMPDIFF(SECOND,u.start_time,u.end_time)>=v.duration THEN 1 ELSE 0 end),3) as avg_comp_play_rate FROM tb_user_video_log u LEFT JOIN tb_video_info v ON u.video_id=v.video_id WHERE YEAR(u.start_time)=2021 GROUP BY v.video_id ORDER BY avg_comp_play_rate DESC;
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