Checking Available Room Using MySql [closed]

Answer 1

You can select your reserved rooms and invert:

SELECT * FROM tbRoom WHERE RoomID NOT IN (SELECT RoomID FROM tbReservationDetail WHERE ArrvialDate < yourDate AND DepartureDate > yourDate)

Answer 2

You can achieve your result using above 3 tables you specified. but only thing you have to change is that you have to use RoomID filed in tbReservation table also.

rbRoom -> store the distinct rooms
tbReservation -> when a room is reserved this table will hold the RoomID and Reservation ID tbReservationDetail ->stores the other details regarding arrivalDate,DepartureDate etc.

then follow the below query

   SELECT * FROM tbRoom WHERE RoomID NOT IN (SELECT RoomID FROM tbReservation     
   tr,tbReservationDetail td WHERE td.ArrvialDate < yourDate AND 
    td.DepartureDate > yourDate  and tr.RoomID=td.RoomID)