From: Kevin Jenkins <gameprogrammer@rakkar.org>
To: pgsql-sql@postgresql.org
Subject: SQL question: Highest column value of unique column pairs
Date: Fri, 11 Jan 2008 16:10:19 -0800
Message-ID: <4788056B.2020809@rakkar.org> (raw)
Hi,
I have the following table which holds the result of 1 on 1 matches:
FName1, LName1, Score1, FName2, LName2, Score2, Date
John, Doe, 85 Bill, Gates, 20 Jan 1.
John, Archer, 90 John, Doe, 120 Jan 5
Bob, Barker, 70 Calvin, Klien 8 Jan 8
John, Doe, 60 Bill, Gates, 25 Jan 3.
So columns 1 and 2 hold the first person. Column 3 holds his score.
Columns 4 and 5 hold the second person. Column 6 holds his score.
I want to return the most recent score for each person (be they an
opponent or myself). And the resultant table shouldn't care if they
are person 1 or 2.
So the end result would be
FName, LName, Score, Date
John, Doe, 120 Jan 5.
John, Archer 90 Jan 5.
Bob, Barker 70 Jan 8
Bill, Gates 25 Jan 3
Calvin Klien 8 Jan 8
Thanks for any help!
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To: pgsql-sql@postgresql.org
Cc: gameprogrammer@rakkar.org
Subject: Re: SQL question: Highest column value of unique column pairs
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