|I'm being asked to create a couple of SQL statements to retrieve information about a Luxury Hotel Database.
List all the rooms in each hotel that have never been reserved in order by hotel number.
I have the SQL statement retrieved the rooms what have been reserved but my problem is retrieving those that have not been reserved.
SELECT RoomNo FROM RESERVATION WHERE RoomNo ORDER BY HotelNo
List the guests by name and the number of times each has reserved a room at one of our hotels. Arrange the list in order from most-frequent to least-frequent guest.
Here are the tables we are working on.
HOTEL (HotelNo, HotelName, City)
ROOM_TYPE (RoomType, Descr, RoomRate)
ROOM (HotelNo, RoomNo, RoomType, PhoneExt)
FK1: Foreign key HotelNo references HOTEL
FK2: Foreign key RoomType references ROOM_TYPE
GUEST (GuestNo, FirstName, LastName, Address, City, State, ZipCode)
GUEST_PHONE (PhoneNumber, GuestNo, PhoneType)
FK: Foreign key GuestNo references GUEST
RESERVATION (ResNum, HotelNo, RoomNo, GuestNo, ArrivalDate, DepartureDate, NumPersons)
FK1: Foreign Key (HotelNo, RoomNo) references ROOM
FK2: Foreign Key GuestNo references GUEST