题解 | 短视频直播间晚上11-12点之间各直播间的在线人数
短视频直播间晚上11-12点之间各直播间的在线人数
https://www.nowcoder.com/practice/38f5febc9dac4e9e84ed5891a3e4ca05
select room_id, room_name, count(distinct user_id) as user_count from user_view_tb join room_info_tb using(room_id) where in_time <= '24:00:00' and out_time > '23:00:00' group by 1, 2
看到很多人把整点的判断给忽略掉了
