Re: Ordering of records in group by not possible

From: Alban Hertroys <alban(at)magproductions(dot)nl>
To: Chris Kratz <chris(dot)kratz(at)vistashare(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Ordering of records in group by not possible
Date: 2006-04-26 14:30:53
Message-ID: 444F841D.2030500@magproductions.nl
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Chris Kratz wrote:
> Hello all,
>
> I wanted to verify what we are seeing.
>
> Select a, aggregate(b)
> from c
> group by a
> order by a,b

That's a rather odd query... Values in b aren't available to order by,
as they have been aggregated. There is no relation to the values in b
and the values in your result set.

You could order by "column 2" if you want to order on the results on
your aggregate:
Select a, aggregate(b)
from c
group by a
order by a,2

--
Alban Hertroys
alban(at)magproductions(dot)nl

magproductions b.v.

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