SELECT c.user_id, c.room_id, g.room_type, c.days FROM (SELECT user_id, room_id, datediff(checkout_time,checkin_time) AS days FROM checkin_tb where datediff(checkout_time,checkin_time) >1 ) c JOIN (SELECT room_id, room_type FROM guestroom_tb ) g ON c.room_id = g.room_id order by days, room_id, use...