From: denis@coralindia.com
To: ogjunk-pgjedan@yahoo.com
To: pgsql-sql@postgresql.org
Subject: Re: Order by YYYY MM DD in reverse chrono order trouble
Date: Wed, 21 Apr 2004 17:06:42 +0530
Message-ID: <006501c42794$eb96fb00$3332a8c0@DENIS> (raw)
References: <20040421103003.79774.qmail@web12703.mail.yahoo.com>
Hi,
If you want to SORT descending considering multiple column, you need to
spefify DESC after each column.
Default is ASC.
So, your present sorting is ASC, ASC and DESC
You can specify
1 DESC, 2 DESC, 3 DESC
HTH
Denis
----- Original Message -----
From: <ogjunk-pgjedan@yahoo.com>
To: <pgsql-sql@postgresql.org>
Sent: Wednesday, April 21, 2004 4:00 PM
Subject: [SQL] Order by YYYY MM DD in reverse chrono order trouble
> Hello,
>
> I am trying to select distinct dates and order them in the reverse
> chronological order. Although the column type is TIMESTAMP, in this
> case I want only YYYY, MM, and DD back.
>
> I am using the following query, but it's not returning dates back in
> the reverse chronological order:
>
> SELECT DISTINCT
> date_part('year', uu.add_date), date_part('month', uu.add_date),
> date_part('day', uu.add_date)
>
> FROM uus INNER JOIN ui ON uus.user_id=ui.id INNER JOIN uu ON
> ui.id=uu.user_id
> WHERE uus.x_id=1
>
> ORDER BY
> date_part('year', uu.add_date), date_part('month', uu.add_date),
> date_part('day', uu.add_date) DESC;
>
>
> This is what the above query returns:
>
> date_part | date_part | date_part
> -----------+-----------+-----------
> 2004 | 2 | 6
> 2004 | 4 | 20
> (2 rows)
>
>
> I am trying to get back something like this:
> 2004 4 20
> 2004 4 19
> 2004 2 6
> ...
>
> My query is obviously wrong, but I can't see the mistake. I was
> wondering if anyone else can see it. Just changing DESC to ASC, did
> not work.
>
> Thank you!
> Otis
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 2: you can get off all lists at once with the unregister command
> (send "unregister YourEmailAddressHere" to majordomo@postgresql.org)
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: denis@coralindia.com, ogjunk-pgjedan@yahoo.com
Subject: Re: Order by YYYY MM DD in reverse chrono order trouble
In-Reply-To: <006501c42794$eb96fb00$3332a8c0@DENIS>
* 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