libpq, PQdescribePrepared -> PQftype, PQfmod, no PQnullable

My understanding is that libpq does not allow one to find if a result
set column is nullable.

Is this right?

(I know how to get a table column nullability information from
pg_attribute.attnotnull, but when coding around the libpq API:
 * Is, OMG, ugly.
 * Doesn't cover the arbitrary SELECT statements.
)

Thanks,

-- Alex -- alex-goncharov@comcast.net --