aggregate reverse

From: "Marcin Krawczyk" <jankes(dot)mk(at)gmail(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: aggregate reverse
Date: 2008-02-01 15:24:37
Message-ID: 95f6bf9b0802010724u5aa9b48x188af97410237d7@mail.gmail.com
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Hi all. I wolud like to know whether it is possible to reverse the behaviour
of an aggregate? Say I have a string '1,2,3,4'. Is there a way to split
those values to records?

Regards and thanks in advance.
mk

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