="literal">application_name</code> - this may appear in
       <span class="emphasis"><em>either or both</em></span> a connection and
       <a class="xref" href="postgres-fdw.html#GUC-PGFDW-APPLICATION-NAME">postgres_fdw.application_name</a>.
       If both are present, <code class="varname">postgres_fdw.application_name</code>
       overrides the connection setting.
       Unlike <span class="application">libpq</span>,
       <code class="filename">postgres_fdw</code> allows
       <code class="varname">