nt of a
     particular datum.  The second form assigns values to particular
     datums, identified by number.
    </p></div><div class="refsect1" id="id-1.7.5.20.16.4"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt id="ECPG-SQL-SET-DESCRIPTOR-DESCRIPTOR-NAME"><span class="term"><em class="replaceable"><code>descriptor_name</code></em></span> <a href="#ECPG-SQL-SET-DESCRIPTOR-DESCRIPTOR-NAME" class="id_link">#</a></dt><dd><p>
        A descriptor name.
       </p></dd><dt id="ECP