On 7/2/20 2:41 AM, Sanaba, Bilva wrote:
Hi hackers,
Currently, the COPY TO api does not support callback functions, while
the COPY FROM api does. The COPY TO code does, however, include
placeholders for supporting callbacks in the future.
Rounding out the support of callback functions to both could be very
beneficial for extension development. In particular, supporting
callbacks for COPY TO will allow developers to utilize the preexisting
command in order to create tools that give users more support for moving
data for storage, backup, analytics, etc.
We are aiming to get the support in core PostgreSQL and add COPY TO
callback support in the next commitfest.The attached patch contains a
change to COPY TO api to support callbacks.
Your code almost exactly the same as proposed in [1] as part of 'Fast
COPY FROM' command. But it seems there are differences.
[1]
https://www.postgresql.org/message-id/flat/3d0909dc-3691-a576-208a-90986e55489f%40postgrespro.ru
--
regards,
Andrey Lepikhov
Postgres Professional
