gistfile1.xq

import module namespace guestbook = "http://www.28msec.com/templates/guestbook/guestbook";
import module namespace xqddf = "http://www.zorba-xquery.com/modules/xqddf";

if (fn:exists(xqddf:collection(xs:QName("guestbook:entries"))))
then
  ()
else 
  let $entries := fn:doc("xml_files/old_entries.xml")//entry
  return
    xqddf:insert-nodes(xs:QName("guestbook:entries"), $entries)