title: 2 problems in Xquery with similar XML files and XMLNS
body: <p>I'ld enquire multiple xml with Basex (file1.xml, file2.xml,....) downloaded from  <a href="https://www.rna.gov.it/RegistroNazionaleTrasparenza/faces/pages/OpenDataAiuti.jspx" rel="nofollow noreferrer">https://www.rna.gov.it/RegistroNazionaleTrasparenza/faces/pages/OpenDataAiuti.jspx</a>
  but I'm not able to write the query on single file because it starts with</p>
  <pre><code>&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;
  &lt;LISTA_AIUTI xmlns=&quot;http://www.rna.it/RNA_aiuto/schema&quot;&gt;
      &lt;AIUTO&gt;
          &lt;CAR&gt;884&lt;/CAR&gt;
  </code></pre>
  <p>Merging is harder form me!I'm a newsbie but I want to learn Xquery!!
  If I cancel the xmlns row it works
  If I upload files in Mysql DB I can but it's not fast solution
  How can I do?</p>