Re: any way for ORDER BY x to imply NULLS FIRST in 8.3?

From: "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com>
To: rihad <rihad(at)mail(dot)ru>
Cc: pgsql-general(at)postgresql(dot)org, jgodoy(at)gmail(dot)com
Subject: Re: any way for ORDER BY x to imply NULLS FIRST in 8.3?
Date: 2007-11-11 05:34:45
Message-ID: dcc563d10711102134j4e3d042cp5e8647e4c8c37f01@mail.gmail.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general

On Nov 9, 2007 5:17 AM, rihad <rihad(at)mail(dot)ru> wrote:
> > Em Wednesday 07 November 2007 13:54:32 rihad escreveu:
> >>
> >> May I, as an outsider, comment? :) I really think of ASC NULLS FIRST
> >> (and DESC NULLS LAST) as the way to go. Imagine a last_login column that
> >> sorts users that have not logged in as the most recently logged in,
> >> which is not very intuitive. I vote for sort_nulls_first defaulting to
> >> false in order not to break bc.
> >
> > But then, when ordering by login date, you should use COALESCE and infinity
> > for them
> > (http://www.postgresql.org/docs/8.2/interactive/datatype-datetime.html)
>
> It's not an easy thing to do with for example Propel 1.2 ORM (written in
> PHP):
>
> $criteria->addDescendingOrderByColumn(myPeer::LAST_LOGIN); // no place
> to shove database-specific attributes in.

Why not create an updatable view that orders the way you want it to?

In response to

Responses

Browse pgsql-general by date

  From Date Subject
Next Message rihad 2007-11-11 06:51:20 Re: any way for ORDER BY x to imply NULLS FIRST in 8.3?
Previous Message rihad 2007-11-11 03:52:48 Re: strange infinite loop in plpgsql