Shigeru Hanada <> writes:
> How about removing postgresql_fdw_validator from backend binary, and
> changing dblink to use contrib/postgresql_fdw's validator?  It breaks
> some backward compatibility and requires contrib/postgresql_fdw to be
> installed before using contrib/dblink with foreign servers, but ISTM
> that it doesn't become so serious.

I don't think that creating such a dependency is acceptable.
Even if we didn't mind the dependency, you said yourself that
contrib/postgresql_fdw's validator will accept stuff that's not
appropriate for dblink.

If we don't think postgresql_fdw_validator belongs in core after all,
we should just move it to dblink.

                        regards, tom lane

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