From: | Laurent Duperval <laurent(dot)duperval(at)masq(dot)ca> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: How should I do this? |
Date: | 2002-06-28 12:22:07 |
Message-ID: | afhkda$1sjg$1@news.hub.org |
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Lists: | pgsql-general |
In <20020628121755(dot)A15733(at)svana(dot)org>, Martijn van Oosterhout wrote:
> Ah right. The problem is that DISTINCT ON requires that the fields be
> distincted on be the same and the first few fields being sorted by. In the
> hypothetical case you could do:
>
> select distinct on (col2) select * from a order by col1;
>
> But that isn't allowed. Maybe you will be a stored procedure or something.
I ended up doing this on the client side because there isn't a way for the
DB to know what I'm trying to do. I also wrote the cleanup stuff on the
client side and everything is working up to specs.
Thanks!
L
--
Laurent Duperval <mailto:laurent(dot)duperval(at)masq(dot)ca>
Why are there flotation devices under plane seats instead of parachutes?
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