select max(lastupdate),prodid
from tablename
group by prodid
-----Original Message-----
From: Thomas Kellerer <spam_eater@xxxxxxx>
Subj: Re: SQL Question
Date: Fri Apr 15, 2005 7:24 am
Size: 621 bytes
To: pgsql-general@xxxxxxxxxxxxxx
On 15.04.2005 13:58 Alex wrote:
> Hi,
>
> i have a table
>
> ProdId | LastUpdate
> -------+------------
> 100 | 2005-04-01
> 100 | 2005-03-01
> 100 | 2005-02-01
> 200 | 2005-04-01
> 200 | 2005-03-01
> 200 | 2005-02-01
>
> - How can i select only the newest record for each ProdId ?
>
> 100 | 2005-04-01
> 200 | 2005-04-01
>
SELECT prodid,
lastupdate
FROM produpdate p1
WHERE lastupdate = (SELECT MAX (lastupdate) FROM produpdate p2 WHERE p2.prodid =
p1.prodid)
Thomas
---------------------------(end of broadcast)---------------------------
TIP 8: explain analyze is your friend
Joseph M Day
Global Innovative Solutions
651 W Washington Blvd
Chicago, IL 60661
D: (312) 371-3054
F: (312) 421-8557
---------------------------(end of broadcast)---------------------------
TIP 6: Have you searched our list archives?
http://archives.postgresql.org
