  called <code class="literal">partition</code>, which causes the technique to be
    applied only to queries that are likely to be working on inheritance partitioned
    tables.  The <code class="literal">on</code> setting causes the planner to examine
    <code class="literal">CHECK</code> constraints in all queries, even simple ones that
    are unlikely to benefit.
   </p><p>
    The following caveats apply to constraint exclusion:

   </p><div class="itemizedlist"><ul class="itemizedlist" style="list-s