From: Andreas <maps.on@gmx.net>
To: pgsql-sql@postgresql.org
Subject: need magic to shuffle some numbers
Date: Tue, 23 Aug 2011 21:49:08 +0200
Message-ID: <4E540434.2000603@gmx.net> (raw)
Hi,
there is a table that has among others a integer primary key "id" and
another integer column "prio" as well as an integer "group_id".
I'd like to invert the values of the prio-column for one of the groups.
The prio numbers start with 3 and there are 1159 different prios in this
group.
At least every value appeares only once. :)
Is there an elegant way to switch the prio values around so that every
record with the first prio gehts the last and vice versa?
Then the records with the second smallest prio get the second-to-last
biggest value and v.v.
...
regards
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Subject: Re: need magic to shuffle some numbers
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