From: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
---|---|
To: | Bruno Wolff III <bruno(at)wolff(dot)to>, Ben-Nes Yonatan <da(at)canaan(dot)co(dot)il>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Martijn van Oosterhout <kleptog(at)svana(dot)org>, pgsql-general(at)postgresql(dot)org |
Subject: | Re: Planner create a slow plan without an available index |
Date: | 2005-08-31 04:04:02 |
Message-ID: | 20050831040402.GC30877@surnet.cl |
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Lists: | pgsql-general |
On Tue, Aug 30, 2005 at 10:39:57PM -0500, Bruno Wolff III wrote:
> On Wed, Aug 31, 2005 at 01:27:30 +0200,
> Ben-Nes Yonatan <da(at)canaan(dot)co(dot)il> wrote:
> >
> > Now again im probably just paranoid but when I'm starting a transaction
> > and in it im making more then 4 billions diffrent queries
> > (select,insert,update,truncate...) and then im closing it, its counted
> > as only one transaction right? (should I duck to avoid the manual? ;))
>
> I believe there is a limit on the number of queries in a transaction of
> 2 or 4 billion (though this may be just in functions).
>
> Ignoring subtransactions, all these queries count as just one transaction.
> I am not sure how subtransactions are counted.
If the subtransaction writes at least a tuple, it counts as another
transaction. Else it doesn't count.
--
Alvaro Herrera <alvherre[]alvh.no-ip.org> Architect, www.EnterpriseDB.com
"I'm always right, but sometimes I'm more right than other times."
(Linus Torvalds)
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