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Re: Postgres_FDW doc doesn't specify TYPE support in Remote Execution Options

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On Tue, 2024-04-09 at 15:49 +0530, Rajan Pandey wrote:
> I was reading https://www.postgresql.org/docs/current/postgres-fdw.html#POSTGRES-FDW-OPTIONS-REMOTE-EXECUTION
> and found that it mentions that Immutable Functions and Operators can
> be pushed down using `extensions` option for foreign server.
> 
> But it does not mention about TYPE. In the shippable.c/lookup_shippable()
> function, I found that type is also pushed down.

The comment only says that data types may be shippable, but not that
they are actually shipped.  Can you think of a case where a data type
would be shipped to a foreign server?  I wrote a foreign data wrapper,
and I cannot think of such a case.

Perhaps the function comment should be adjusted by removing the parenthesis
or changing it to "(operator/function/...)".

> Does this require updating the docs? Can I raise a PR to do so? Thank you! :) 

You would send a patch against the "master" branch to the pgsql-docs list for that.

Yours,
Laurenz Albe






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