st 7. 8. 2019 v 17:39 odesílatel Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> napsal:
> Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> > I should to use a cache accessed via fn_extra. There will be stored data
> > about function parameters (types). If I understand correctly, these data
> > should be stable in query, and then recheck is not necessary. Is it true?
>
> I wouldn't trust that. You don't really know what the lifespan of
> a fn_extra cache is.
>
fn_extra cache cannot be longer than query. And if I understand well, then
is not possible to change parameter types inside query?
Pavel
> regards, tom lane
>