From: | Andrew Perrin <aperrin(at)socrates(dot)berkeley(dot)edu> |
---|---|
To: | Steve Meynell <steve(at)candata(dot)com> |
Cc: | Postgresql Mailing List <pgsql-sql(at)postgresql(dot)org> |
Subject: | Re: Help retrieving lastest record |
Date: | 2001-02-16 20:47:13 |
Message-ID: | Pine.LNX.4.21.0102161547040.20198-100000@nujoma.perrins |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-sql |
How 'bout these:
fgdata=# select * from fruit order by dt desc limit 1;
number | fruit | dt
--------+---------+------------------------
20 | Oranges | 2000-06-07 00:00:00-05
(1 row)
fgdata=# select * from fruit where fruit='Apples' order by dt desc limit
1;
number | fruit | dt
--------+--------+------------------------
15 | Apples | 1999-07-20 00:00:00-05
(1 row)
Cheers,
Andy Perrin
----------------------------------------------------------------------
Andrew J Perrin - Ph.D. Candidate, UC Berkeley, Dept. of Sociology
Chapel Hill, North Carolina, USA - http://demog.berkeley.edu/~aperrin
aperrin(at)socrates(dot)berkeley(dot)edu - aperrin(at)igc(dot)apc(dot)org
On Thu, 15 Feb 2001, Steve Meynell wrote:
> Ok what I am trying to do is select out of the database the latest
> record meeting a certain criteria.
>
> Example:
>
> Number | Fruit | Date
> 15 Apples July 20, 1999
> 20 Oranges June 7, 2000
> 13 Pears Jan 31, 2000
> 17 Apples April 10, 1999
> Now what I need to do is select the oranges out because the date is the
> latest one, something like:
>
> select * from basket where max(date);
> This would yield me:
> 20 Oranges June 7, 2000
>
> I know this doesn't work but I need something like it.
> or something like
>
> select * from basket where max(date) and fruit='Apples';
> This would yield me:
> 15 Apples July 20, 1999
>
> Thank you in advance,
>
>
> --
> Steve Meynell
> Candata Systems
>
>
>
From | Date | Subject | |
---|---|---|---|
Next Message | Alex Pilosov | 2001-02-16 20:50:32 | Re: Help retrieving lastest record |
Previous Message | Roberto Mello | 2001-02-16 20:39:58 | Re: Help Retrieving Latest Record |