Re: showing multiple reference details from single query

From: Michael Fuhr <mike(at)fuhr(dot)org>
To: Ferindo Middleton Jr <fmiddleton(at)verizon(dot)net>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: showing multiple reference details from single query
Date: 2005-09-11 23:33:37
Message-ID: 20050911233337.GA54749@winnie.fuhr.org
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On Sun, Sep 11, 2005 at 06:37:52PM -0400, Ferindo Middleton Jr wrote:
> table_one has the following columns:
> id (SERIAL), column_one (INTEGER REFERENCES table_two(id)), column_two
> (INTEGER REFERENCES table_two(id))
>
> table_two has the following columns:
> id (SERIAL), more_detailed_info (TEXT)
>
> How can I write a single query which will can uniquely identify in the
> result the separated values of the more_detailed_info field of
> table_two?

I think you're looking for something like this:

SELECT t1.id,
t1.column_one, t2a.more_detailed_info,
t1.column_two, t2b.more_detailed_info
FROM table_one AS t1
JOIN table_two AS t2a ON t2a.id = t1.column_one
JOIN table_two AS t2b ON t2b.id = t1.column_two;

--
Michael Fuhr

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