ATE SCHEMA</code>, as well as more subcommand
   types than are presently accepted by
   <span class="productname">PostgreSQL</span>.
  </p><p>
   The SQL standard specifies that the subcommands in <code class="command">CREATE
   SCHEMA</code> can appear in any order.  The present
   <span class="productname">PostgreSQL</span> implementation does not
   handle all cases of forward references in subcommands; it might
   sometimes be necessary to reorder the subcommands in order to avoid
   forward references