Re: Query Problem
От | Richard Huxton |
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Тема | Re: Query Problem |
Дата | |
Msg-id | 4254F351.2020707@archonet.com обсуждение исходный текст |
Ответ на | Query Problem (Abdul Wahab Dahalan <wahab@mimos.my>) |
Список | pgsql-sql |
Abdul Wahab Dahalan wrote: > If I've 2 tables like this: > > Country table : with 2 fields (country and id) > > Country id > England E > France F > Japan J > > FlightTo table : with 2 fields(Flight ID and Destination) > > FlightID Destination > B1 E,J > B2 E,F > B3 J,F Simplest solution is to correct this table - "Destination" should be two fields (e.g. dest_from,dest_to). Then you could do something like: SELECT flight_id, c1.country as from_country, c2.country as to_country FROM flight_to, country c1, country c2 WHERE dest_from = c1.id AND dest_to = c2.id ; -- Richard Huxton Archonet Ltd
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