From: Aaron Bono <aaron.bono@aranya.com>
To: Yasir Malik <ymalik@cs.stevens.edu>
Cc: PostgreSQL <pgsql-sql@postgresql.org>
Subject: Re: Am I crazy or is this SQL not possible
Date: Thu, 1 Jun 2006 13:39:48 -0500
Message-ID: <bf05e51c0606011139y26ae506cr8f40fbf12b399c3f@mail.gmail.com> (raw)
In-Reply-To: <Pine.NEB.4.64.0606011409360.758@pink-elephant.cs.stevens-tech.edu>
References: <df01c91b0606011043g61328d6habaee8fa037a5ccf@mail.gmail.com>
<Pine.NEB.4.64.0606011409360.758@pink-elephant.cs.stevens-tech.edu>
I think this approach will only work if each broadcast_id has the same
maximum date_sent value. You really need to do the group by in a
sub-query to bring the broadcast_id together with the max date_sent.
On 6/1/06, Yasir Malik <ymalik@cs.stevens.edu> wrote:
> > What I would like to do is simply get the last date_sent and it's
> > status for every broadcast. I can't do a GROUP BY because I can't put
> > an aggregate on the status column.
> >
> > SELECT MAX(date_sent), status
> > FROM broadcast_history
> > GROUP BY broadcast_id
> >
> You could try the following:
> select status
> from broadcast_history bh
> where bh.date_sent =
> (select max(bh2.date_sent)
> from broadcast_history bh2);
>
==================================================================
Aaron Bono
President Aranya Software Technologies, Inc.
http://www.aranya.com We take care of your technology needs.
Phone: (816) 695-6071
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To: pgsql-sql@postgresql.org
Cc: aaron.bono@aranya.com, ymalik@cs.stevens.edu
Subject: Re: Am I crazy or is this SQL not possible
In-Reply-To: <bf05e51c0606011139y26ae506cr8f40fbf12b399c3f@mail.gmail.com>
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