FETCH_COUNT does not work with combined queries, and probably has never
worked since 2006.
For the record, this bug has already been reported & discussed by Daniel
Vérité a few months back, see:
https://www.postgresql.org/message-id/flat/a0a854b6-563c-4a11-bf1c-d6c6f924004d%40manitou-mail.org
Given the points of view expressed on this thread, especially Tom's view
against improving the lexer used by psql to known where query ends, it
looks that my documentation patch is the way to go in the short term, and
that if the "always show query results" patch is committed, it might
simplify a bit solving this issue as the PQexec call is turned into
PQsendQuery.
--
Fabien.
