-- Database schema
| airlines : uid [ INT ] primary_key , Airline [ TEXT ] , Abbreviation [ TEXT ] , Country [ TEXT ] | airports : City [ TEXT ] , AirportCode [ TEXT ] primary_key , AirportName [ TEXT ] , Country [ TEXT ] , CountryAbbrev [ TEXT ] | flights : Airline [ INT ] primary_key , FlightNo [ INT ] , SourceAirport [ TEXT ] flights.SourceAirport = airports.AirportCode , DestAirport [ TEXT ] flights.DestAirport = airports.AirportCode |
-- -- Give the flight numbers of flights landing at APG.

SELECT FlightNo FROM FLIGHTS WHERE DestAirport  =  "APG";