| From: | Pandurangan R S <pandurangan(dot)r(dot)s(at)gmail(dot)com> |
|---|---|
| To: | Alex <alex(at)meerkatsoft(dot)com> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Delete Question |
| Date: | 2005-12-07 07:55:18 |
| Message-ID: | 5e744e3d0512062355w2f059624v33ef967b858527fe@mail.gmail.com |
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| Lists: | pgsql-general |
DELECT FROM table
WHERE (ProdID,ChangeDate) not in
(SELECT ProdID,MAX(ChangeDate) FROM table
GROUP BY ProdID)
I hope this works.
On 12/7/05, Alex <alex(at)meerkatsoft(dot)com> wrote:
> Hi,
>
> I have a table where I store changes made to an order. The looks like
> ProdID, ChangeDate, Change1, Change2, ... etc.
> Some ProdIDs have multiple records.
>
> Is there an easy way to delete all records of a ProdID except the most
> recent (ChangeDate is timestamp) one? Preferably in one SQL statement?
>
> Thanks for any advise
>
> Alex
>
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>
--
Regards
Pandu
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