Re: DEALLOCATE ALL - Mailing list pgsql-patches

From Alvaro Herrera
Subject Re: DEALLOCATE ALL
Date
Msg-id 20070327173200.GB3966@alvh.no-ip.org
Whole thread Raw
In response to DEALLOCATE ALL  ("Marko Kreen" <markokr@gmail.com>)
Responses Re: DEALLOCATE ALL  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-patches
Marko Kreen wrote:
> When pooling connections where prepared statements are in use,
> it is hard to give new client totally clean connection as
> there may be allocated statements that give errors when
> new client starts preparing statements again.

Huh, didn't we have a RESET SESSION command to do just that?  What about
cursors, for example?

> I did it slightly hacky way - if DeallocateStmt->name is
> NULL is signifies DEALLOCATE ALL command.  All the code
> that looks into DeallocateStmt seems to survive the situation
> so it should be problem.  If still a new node is needed
> or additional field in the node I can rework the patch.

Wouldn't it be easier to just add a bool to DeallocateStmt?

--
Alvaro Herrera                                http://www.PlanetPostgreSQL.org
"Si un desconocido se acerca y te regala un CD de Ubuntu ...
                                     Eso es ...  Eau de Tux"

pgsql-patches by date:

Previous
From: Bruce Momjian
Date:
Subject: Re: [pgsql-patches] pg_get_domaindef
Next
From: Bruce Momjian
Date:
Subject: Re: Recalculating OldestXmin in a long-running vacuum