Hi, In <cacjufxfbffgaxw1litneqapcuvp1s7gl1ghi--kbsqsjwh7...@mail.gmail.com> "Re: Make COPY format extendable: Extract COPY TO format implementations" on Wed, 13 Mar 2024 16:00:46 +0800, jian he <jian.universal...@gmail.com> wrote:
>> More use cases will help us which callbacks are needed. We >> will be able to collect more use cases by providing basic >> callbacks. > Let's say the customized format is "csv1", but it is just analogous to > the csv format. > people should be able to create an extension, with serval C functions, > then they can do `copy (select 1 ) to stdout (format 'csv1');` > but the output will be exact same as `copy (select 1 ) to stdout > (format 'csv');` Thanks for sharing one use case but I think that we need real-world use cases to consider our APIs. For example, JSON support that is currently discussing in another thread is a real-world use case. My Apache Arrow support is also another real-world use case. Thanks, -- kou
