Re: poc - possibility to write window function in PL languages

Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> st 20. 1. 2021 v 21:07 odesílatel Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> napsal:
>> Uh, what? I don't understand what this "partition context" is.

> It was my name for an access to window partition local memory -
> WinGetPartitionLocalMemory

Ah.

> We need some interface for this cache

I'm not convinced we need to expose that, or that it'd be very
satisfactory to plpgsql users if we did. The fact that it's fixed-size
and initializes to zeroes are both things that are okay for C programmers
but might be awkward to deal with in plpgsql code. At the very least it
would greatly constrain what data types you could usefully store.

So I'd be inclined to leave that out, at least for the first version.

regards, tom lane