On 2017/08/19 2:12, Robert Haas wrote:
On Thu, Aug 17, 2017 at 4:27 AM, Etsuro Fujita
<fujita.ets...@lab.ntt.co.jp> wrote:
I think that would be much more efficient than INSERTing tuples into the
remote server one by one.  What do you think about that?

I agree, but I wonder if we ought to make it work first using the
existing APIs and then add these new APIs as an optimization.

I'm not sure that's a good idea because that once we support INSERT tuple-routing for foreign partitions, we would have a workaround: INSERT INTO partitioned_table SELECT * from data_table where data_table is a foreign table defined for an input file using file_fdw.

postgres_fdw isn't the only FDW in the world, and it's better if
getting a working implementation doesn't require too many interfaces.

Agreed. My vote would be to leave the COPY part as-is until we have these new APIs.

Best regards,
Etsuro Fujita

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