s an advantage: because constraints can be defined
    even on declaratively-partitioned tables, in addition to their internal
    partition bounds, constraint exclusion may be able
    to elide additional partitions from the query plan.
   </p><p>
    The default (and recommended) setting of
    <a class="xref" href="runtime-config-query.html#GUC-CONSTRAINT-EXCLUSION">constraint_exclusion</a> is neither
    <code class="literal">on</code> nor <code class="literal">off</code>, but an intermediate setting
  