Re: pl/pgsql problem with search_path

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

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