Re: Make COPY format extendable: Extract COPY TO format implementations

On Sun, Dec 10, 2023 at 5:44 AM Sutou Kouhei <kou(at)clear-code(dot)com> wrote:
>
> Hi,
>
> Thanks for reviewing our latest patch!
>
> In
> <TY3PR01MB9889C9234CD220A3A7075F0DF589A(at)TY3PR01MB9889(dot)jpnprd01(dot)prod(dot)outlook(dot)com>
> "RE: Make COPY format extendable: Extract COPY TO format implementations" on Sat, 9 Dec 2023 02:43:49 +0000,
> "Hayato Kuroda (Fujitsu)" <kuroda(dot)hayato(at)fujitsu(dot)com> wrote:
>
> > (I remember that this theme was talked at Japan PostgreSQL conference)
>
> Yes. I should have talked to you more at the conference...
> I will do it next time!
>
>
> Can we discuss how to proceed this improvement?
>
> There are 2 approaches for it:
>
> 1. Do the followings concurrently:
> a. Implementing small changes that got a consensus and
> merge them step-by-step
> (e.g. We got a consensus that we need to extract the
> current format related routines.)
> b. Discuss design

It's preferable to make patches small for easy review. We can merge
them anytime before commit if necessary.

I think we need to discuss overall design about callbacks and how
extensions define a custom copy handler etc. It may require some PoC
patches. Once we have a consensus on overall design we polish patches
including the documentation changes and regression tests.

Regards,

--
Masahiko Sawada
Amazon Web Services: https://aws.amazon.com