Re: JOIN a table twice for different values in the same query - Mailing list pgsql-sql

From Colin Wetherbee
Subject Re: JOIN a table twice for different values in the same query
Date
Msg-id 47869C8C.4080109@denterprises.org
Whole thread Raw
In response to Re: JOIN a table twice for different values in the same query  ("Phillip Smith" <phillip.smith@weatherbeeta.com.au>)
Responses Re: JOIN a table twice for different values in the same query  (Colin Wetherbee <cww@denterprises.org>)
List pgsql-sql
Phillip Smith wrote:
> As a side note - all the IATA codes are unique for each airport -
> wouldn't it be better to use these as the Primary Key and Foreign
> Keys? Then you wouldn't have to even join the tables unless you
> wanted the port names (not just the code)

This is true, but FWIW, my application will mostly be joining for the 
name of the airport or the city, not the code.

I'll keep the idea of using the codes as keys in mind, though.  Thanks 
for pointing that out.

Colin



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