   <p>
        <code class="literal">range_merge('{[1,2), [3,4)}'::int4multirange)</code>
        → <code class="returnvalue">[1,4)</code>
       </p></td></tr><tr><td class="func_table_entry"><p class="func_signature">
        <a id="id-1.5.8.26.11.2.2.9.1.1.1" class="indexterm"></a>
        <code class="function">multirange</code> ( <code class="type">anyrange</code> )
        → <code class="returnvalue">anymultirange</code>
       </p>
       <p>
        Returns a multirange containing just the given