I have developed a query which adds accumulated costs for each client in my DB, I am having trouble adding the VAT tax which is 17.5% to the query though, I seem to get a lesser total once tax is added which can't be correct.
Here is my query:
Here is my query:
Code:
SELECT DISTINCT Holiday_Bookings.ClientID, Holiday_Bookings.Booking_Cost, Room_Facilities.FacilityCost, Rooms.[CostPerNight], Rooms![CostPerNight]*Nights_Stayed+Holiday_Bookings!Booking_Cost+Room_Facilities!FacilityCost AS TotalCost
FROM Room_Facilities INNER JOIN (Hotels INNER JOIN (Holiday_Bookings RIGHT JOIN Rooms ON Holiday_Bookings.ClientID=Rooms.ClientID) ON Hotels.HotelID=Rooms.HotelID) ON Room_Facilities.FacilityID=Rooms.FacilityID;