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--select f.flight_id, f.aircraft_code, s.seat_no from flights f --left join seats s on f.aircraft_code = s.aircraft_code --select b.ticket_no, b.flight_id, from boarding_passes b --left join flights f on b.flight_id = f.flight_id --where b.flight_id = 30625 select aircraft_code, seat_no, count(*) kol from seats group by aircraft_code, seat_no

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