 any), or a sort ordering that
     might be useful for merge joining (see below).
    </p><p>
     If the query requires joining two or more relations,
     plans for joining relations are considered
     after all feasible plans have been found for scanning single relations.
     The three available join strategies are:

     </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
        <em class="firstterm">nested loop join</em>: The right relatio