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
a.video_id,
ROUND(
AVG(
IF(
TIMESTAMPDIFF(SECOND, a.start_time, a.end_time) >= b.duration,
1,
0
)
),
3
) AS avg_comp_play_rate
FROM
tb_user_video_log a
JOIN tb_video_info b ON a.video_id = b.video_id
WHERE
YEAR(a.start_time) = 2021
GROUP BY
a.video_id
ORDER BY
avg_comp_play_rate DESC;
