On Monday 08 August 2005 08:02 pm, Tom Lane wrote:
> Adrian Klaver <aklaver@xxxxxxxxxxx> writes:
> > I recently migrated a database from Postgres 7.4.1 to Postgres 8.03. The
> > only problem I have run into is that a plpythonu function that returns
> > void will not run under 8.03. The error message states that a plpython
> > function cannot return void. I got around it by having it return text and
> > not actually returning anything. I have searched for an explanation and
> > can't seem to locate one.
>
> The explanation is doubtless here:
>
> 2004-09-19 19:38 tgl
>
> * src/pl/plpython/plpython.c: Add defenses against plpython
> functions being declared to take or return pseudotypes. Not sure
> why I neglected to add these checks at the same time I added them
> to the other PLs, but it seems I did.
>
> It's certainly possible to weaken this test to allow "void" again,
> but shouldn't there be corresponding changes elsewhere to ensure that
> the behavior is actually sensible?
>
> regards, tom lane
Thanks for the explanation. One of these days I will remember that the source
is my friend.
--
Adrian Klaver
aklaver@xxxxxxxxxxx
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
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