Stored Procedure throwing errors on Column Name - mysql

Question

delimiter $$
drop procedure if exists getEmptySeats $$
create procedure getEmptySeats(flight_number char(5),flight_date date)
begin
select seatingID as Seats, concat(Seats.rowNumber, Seats.seatNumber) as Seat
from Seating
where
aircraftID = aircraft_id and
seatID not in
( Select seatID from Seating
inner join Seats on Seating.seatID = Seats.seatID
inner join Booking on Seating.bookingNumber = Booking.bookingNumber
inner join Flights on Booking.flightCode = Flights.flightCode
inner join FlightSchedule on Flights.flightNumber = FlightSchedule.flightNumber
where flightNumber = flight_number and flightDate = flight_date)
order by seatingID;
end $$
ORDER BY RAND()
LIMIT 1
delimiter ;
The procedure is suppose to give a random seat in a specific airplane.
I have no idea what is wrong and I have searched the internet for so long and haven't found any thing that helped.
When I call the procedure it gives this:
Error Code: 1054. Unknown column 'Seats.rowNumber' in 'field list'
Here is the Seats table:
seatID INT(11)
rowNumber TINYINT(4)
seatNumber CHAR(1)
seatPlacement VARCHAR(15)
plainID CHAR(6)

Answer 1

You need to join it with Seats table. The one used as a subquery can not be accessed directly

Answer 2

As #Madhivanan mentioned, you need to join it with the Seats table.
There were also a few ambiguous columns which needed fixing (prefixing with the table name usually is the easiest answer unless you give the table an alias)
delimiter $$
drop procedure if exists getEmptySeats $$
create procedure getEmptySeats(flight_number char(5),flight_date date)
begin
select seatingID as Seats, concat(Seats.rowNumber, Seats.seatNumber) as Seat
from Seating
inner join Seats on Seating.seatID = Seats.seatID
where
aircraftID = aircraft_id and
seating.seatID not in
( Select seating.seatID from Seating
inner join Seats on Seating.seatID = Seats.seatID
inner join Booking on Seating.bookingNumber = Booking.bookingNumber
inner join Flights on Booking.flightCode = Flights.flightCode
inner join FlightSchedule on Flights.flightNumber = FlightSchedule.flightNumber
where Flights.flightNumber = flight_number and flightDate = flight_date)
order by seatingID;
end $$
ORDER BY RAND()
LIMIT 1
delimiter ;