Am 14.12.2018 um 15:11 schrieb Justin Pryzby:
> I doubt it's easily possible, but what would it take to receive data
> in binary format ?
Yes, it's not so easy: "Values passed in binary format require knowledge
of the internal representation expected by the backend. For example,
integers must be passed in network byte order. Passing numeric values
requires knowledge of the server storage format, as implemented in
src/backend/utils/adt/numeric.c::numeric_send() and
src/backend/utils/adt/numeric.c::numeric_recv()." I fear the internal
representation might also change between Postgres versions.
> Note that libpq doesn't allow the possibility to handling binary only
> for "easy" columns types like ints, it's all or nothing.
Right. But note that this is only true for the result format, not for
the parameter formats - they can be different (specify in paramFormats).
-- Christoph
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