="titlepage"><div><div><h3 class="title">F.38.5. Remote Query Optimization <a href="#POSTGRES-FDW-REMOTE-QUERY-OPTIMIZATION" class="id_link">#</a></h3></div></div></div><p>
   <code class="filename">postgres_fdw</code> attempts to optimize remote queries to reduce
   the amount of data transferred from foreign servers.  This is done by
   sending query <code class="literal">WHERE</code> clauses to the remote server for
   execution, and by not retrieving table columns that are not needed for
   the current