| From: | "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com> |
|---|---|
| To: | Gene Vital <genevital(at)karibe(dot)com> |
| Cc: | <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: updating records |
| Date: | 2003-10-03 17:01:05 |
| Message-ID: | Pine.LNX.4.33.0310031058580.27472-100000@css120.ihs.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
On Fri, 3 Oct 2003, Gene Vital wrote:
> Hi all.
> I am using Visual FoxPro via ODBC to update records on a 7.3.4
> PostgreSql server and it appears that it always uses delete/insert
> instead of updating the current record. Can this be changed to update
> the existing record instead?
I'm not sure if you are saying that Foxpro is doing a delete / insert, or
that postgresql is doing one.
Every update in postgresql is, in fact, a delete / insert, with the delete
delayed until no more transactions are looking at that version of the row
and vacuum has been run.
So, if Visual Foxpro is in fact issuing a delete insert, it's likely no
great performance hit for postgresql, which would wind up doing the same
basic thing anyway.
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