 It can be specified for a
       foreign table or a foreign server. The option specified on a table
       overrides an option specified for the server.
       The default is <code class="literal">1</code>.
      </p><p>
       Note the actual number of rows <code class="filename">postgres_fdw</code> inserts at
       once depends on the number of columns and the provided
       <code class="literal">batch_size</code> value. The batch is executed as a single
       query, and the libpq protocol (which <cod