From: Tomasz Myrta <jasiek@klaster.net>
To: A.M. <agentm@cmu.edu>
To: pgsql-sql@postgresql.org
Subject: Re: order by date desc but NULLs last
Date: Mon, 10 Feb 2003 07:12:11 +0800
Message-ID: <20030210071211.M27958@klaster.net> (raw)
In-Reply-To: <F427C52A-3C7D-11D7-A094-0030657192DA@cmu.edu>
References: <F427C52A-3C7D-11D7-A094-0030657192DA@cmu.edu>
> I have a simple query that sorts by descending date but the NULL
> dates show up first. Is there a way I can sort so they come last
> without sorting ascending?
>
> SELECT submittime,score,gradedtime FROM student_gradedmaterial WHERE
> gradedmaterialid=3 and studentid=102 order by gradedtime desc;
>
> submittime | score | gradedtime
> ---------------------+-------+----------------------------
> 2003-01-30 22:56:38 | |
> 2003-01-31 03:42:29 | 99 | 2003-02-06 14:21:43.043587
>
> but what I want is all the graded items first in gradedtime desc and
> NULL afterwards. I do need to keep the NULL score rows. (So I get
> the latest submitted grade for the assignment but also any ungraded
> submission information.)
>
> Thanks for any advice.
> ><><><><><><><><><
> AgentM
> agentm@cmu.edu
order by gradetime is null asc, gradetime desc;
Regards,
Tomasz Myrta
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-sql@postgresql.org
Cc: jasiek@klaster.net, agentm@cmu.edu
Subject: Re: order by date desc but NULLs last
In-Reply-To: <20030210071211.M27958@klaster.net>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox