keke abe <keke@mac.com> writes:
> After receiving the 'H' (COPY_OUT) message from the backend,
> how should I tell if the incoming data is in binary format or
> not?
You don't; you just have to know whether you asked for binary or text
copy. At the moment binary copy to/from the frontend is disabled
anyway: /* * This restriction is unfortunate, but necessary until the frontend * COPY protocol is redesigned to
bebinary-safe... */ if (pipe && binary) elog(ERROR, "COPY BINARY is not supported to stdout or from
stdin");
There's a TODO list item to invent a less brain-dead format for binary
COPY data. (The binary cursor representation is not too bad, maybe just
use that.)
In the meantime I suggest forget about COPY BINARY and use DECLARE
BINARY CURSOR instead.
regards, tom lane