"literal">numrange(1.1,2.2) -|- '{[2.2,3.3)}'::nummultirange</code>
        → <code class="returnvalue">t</code>
       </p></td></tr><tr><td class="func_table_entry"><p class="func_signature">
        <code class="type">anymultirange</code> <code class="literal">+</code> <code class="type">anymultirange</code>
        → <code class="returnvalue">anymultirange</code>
       </p>
       <p>
        Computes the union of the multiranges.  The multiranges need not overlap
        or be adjacent.
       </p