Re: [PATCH 4/4] Add tests to dblink covering use of COPY TO FUNCTION

Jeff Davis <pgsql@j-davis.com> writes:
> Don't you still need the functions to accept an argument of type
> internal? Otherwise, we lose the ability to copy a buffer to the dblink
> connection, which was the original motivation.

If you do that, then there is no possibility of ever using this feature
except with C-coded functions, which seems to me to remove most of
whatever use-case there was.
        regards, tom lane