I'm creating a database which is a booking system for a guitar shop that offers lessons. I have a query which looks up lessons booked, but i need one that looks up ones that are not booked or "available". I've gone about it this way : Created a table with all time slots for the day, then created a query which looks up appointments that are not in the query of the booked appointments, so this means they are free. This is that query.
SELECT tblAvailableLessons.[Time of lesson]
FROM tblAvailableLessons, qryAppointmentsBooked
WHERE (((tblAvailableLessons.[Time of lesson])<>qryAppointmentsBooked.[Time of lesson]))
It works fine on the form which looks up the query, but say if i was to change the instructor, the query returns no data. It appears as though if an appointment has not previously been booked for that day or that instructor, no values are returned. I'm now stuck as to where to go, so if you could give me a point in the right direction it would be much apprieciated.
SELECT tblAvailableLessons.[Time of lesson]
FROM tblAvailableLessons, qryAppointmentsBooked
WHERE (((tblAvailableLessons.[Time of lesson])<>qryAppointmentsBooked.[Time of lesson]))
It works fine on the form which looks up the query, but say if i was to change the instructor, the query returns no data. It appears as though if an appointment has not previously been booked for that day or that instructor, no values are returned. I'm now stuck as to where to go, so if you could give me a point in the right direction it would be much apprieciated.
