1.先求完播次数 select tuvl.video_id, count(*) finish_cnt from tb_user_video_log tuvl, tb_video_info tvi where tuvl.video_id = tvi.video_id and year(start_time) = 2021 and timediff(end_time, start_time) >= tvi.duration group by tuvl.video_id 2.再求全部播放次数 select video_id, count(*) v...