| From: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Zhihong Yu <zyu(at)yugabyte(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: poc - possibility to write window function in PL languages |
| Date: | 2021-01-20 20:14:27 |
| Message-ID: | CAFj8pRBB_kO=XKcOO0uXuaLQ1VgFxCzatsvX4VoD5efHd83ExQ@mail.gmail.com |
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st 20. 1. 2021 v 21:07 odesílatel Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> napsal:
> Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> > The second question is work with partition context value. This should be
> > only one value, and of only one but of any type per function. In this
> case
> > we cannot use GET statements. I had an idea of enhancing declaration.
> Some
> > like
>
> > DECLARE
> > pcx PARTITION CONTEXT (int); -- read partition context
> > BEGIN
> > pcx := 10; -- set partition context
>
> > What do you think about it?
>
> Uh, what? I don't understand what this "partition context" is.
>
It was my name for an access to window partition local memory -
WinGetPartitionLocalMemory
We need some interface for this cache
Regards
Pavel
>
> regards, tom lane
>
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