题解 | #平均播放进度大于60%的视频类别#

SELECT
    tag,
    CONCAT(ROUND(AVG(IF(
    TIME_TO_SEC(end_time)-TIME_TO_SEC(start_time)>=info.duration,
    100,
    (TIME_TO_SEC(end_time)-TIME_TO_SEC(start_time))/duration*100
    )),2),'%') AS avg_play_progress
FROM tb_video_info info
JOIN tb_user_video_log log USING(video_id)
GROUP BY tag
HAVING SUBSTR(avg_play_progress,1,5)>60.00
ORDER BY avg_play_progress DESC