Re: temporary tables, plpgsql and yes i bet this has been asked

Bruce Momjian wrote:
> Murray Prior Hobbs wrote:
> >
> > in a plpgsql function
> >
> > create temporary table X
> >
> > ....
> >
> >
> > drop table X
> >
> >
> > then in another function
> >
> > loop
> >
> > call the other function
> >
> > end loop
> >
> >
> > i get the problem that the second time the table is created (ie in the
> > second call) it is not visible
> >
> > now yes i could declare the table in the calling funtion but then the
> > original function is less useful to me
>
> Interesting. Can you recreate the problem in psql without the functions
> and show an example? I am confused how this could be failing.

I bet he's using the temp table without EXECUTE. That
would've failed even without the other "calling" function
around it, as soon as he uses it more than once per session.

SPI still needs to learn how to determine if a query uses
temp tables somewhere in order to silently re-prepare queries
when required. And I am absolutely sure this is not an issue
we should address in PL/pgSQL. It has to be solved on the SPI
level.

Jan

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