Hi, In <CAEG8a3+-3fAmiwD5NmE7W4j5-=HLs2OEexQNW9-fB=j=mdx...@mail.gmail.com> "Re: Make COPY format extendable: Extract COPY TO format implementations" on Fri, 29 Nov 2024 10:15:04 +0800, Junwang Zhao <zhjw...@gmail.com> wrote:
> This thread and [1] thread are kind of interleaved, I chose this thread > to share the numbers because I think this feature should be committed > first and then adapt the *copy to json* as a contrib module. I agree with you. > Committers on this thread seem worried about the performance > drawback, so what I tried to do is that *if 2 is slightly worse than 1, > but better than 3*, then we can commit 2 first, but I did not get > the expected number. Could you break down which patch in the v13 patch set[1] affected? If we can find which change improves performance, we can use the approach in this patch set too. [1]: https://www.postgresql.org/message-id/CACJufxH8J0uD-inukxAmd3TVwt-b-y7d7hLGSBdEdLXFGJLyDA%40mail.gmail.com Thanks, -- kou
