Re: difficult query

From: Jakub Ouhrabka <jouh8664(at)ss1000(dot)ms(dot)mff(dot)cuni(dot)cz>
To: Ian Barwick <barwick(at)gmx(dot)net>
Cc: <pgsql-sql(at)postgresql(dot)org>
Subject: Re: difficult query
Date: 2002-05-04 17:34:03
Message-ID: Pine.LNX.4.33.0205041921020.18453-100000@u-pl2
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> > Is it possible to do this in sql?
>
> Basically, no. (You might be able to do it with the help
> of a user-defined function though).
>
> Why do you want to do this?

I'm curious. I've been on a sql course long time ago where the tutor
mentioned similiar problem as something special for sql smarties... And
yesterday when I faced this problem (which can be solved perfectly with
the outer join) I wasn't able to remember the solution... If there is
any... Just out of curiosity...

thanks, kuba

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