Re: pl/pgsql problem with search_path

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Gaetano Mendola <mendola(at)bigfoot(dot)com>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: pl/pgsql problem with search_path
Date: 2003-09-07 21:59:36
Message-ID: 200309072159.h87LxaQ21779@candle.pha.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-bugs

Gaetano Mendola wrote:
> "Bruce Momjian" <pgman(at)candle(dot)pha(dot)pa(dot)us> wrote:
> > Tom Lane wrote:
> > > Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > > > This highlights another problem with our plpgsql function caching.
> > >
> > > It's a little disturbing to think that any change in SEARCH_PATH might
> > > force us to discard all cached plans. That could be expensive; and
> > > consider a function that deliberately sets SEARCH_PATH to ensure that
> > > it gets the tables it wants. You wouldn't want such a function to be
> > > unable to cache any plans across calls (not to mention blowing away
> > > every other function's plans, too).
> > >
> > > We'd probably better record with each plan the SEARCH_PATH it was
> > > generated with. Then, as long as that matches the current setting,
> > > we can re-use the plan.
> > >
> > > Of course, none of this is going to happen until someone gets around to
> > > creating infrastructure for flushing cached plans at need. Right at the
> > > moment the answer is going to have to be "don't do that".
> >
> > Yep. I was just surprised it highlighted another failure of cached
> > plans.
>
> There is already a TODO for it ?

Yep:

o Fix problems with complex temporary table creation/destruction
without using PL/PgSQL EXECUTE, needs cache prevention/invalidation

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073

In response to

Browse pgsql-bugs by date

  From Date Subject
Next Message Theodore Petrosky 2003-09-08 03:11:36 help with mac osx 10.2.6
Previous Message Gaetano Mendola 2003-09-07 17:19:08 Re: pl/pgsql problem with search_path