XML/XQuery/node

Query from root element

File: Data.xml
<?xml version="1.0"?>
<Books>
 <Book>A</Book>
 <Book>B</Book>
 <Book>C</Book>
</Books>
File: Query.xquery
doc("Data.xml")/Books/Book
Output:
<?xml version="1.0" encoding="UTF-8"?>
<Book>A</Book>
<Book>B</Book>
<Book>C</Book>

Select element by level

File: Data.xml
<?xml version="1.0"?>
<bib>
  <book year="1988">
    <title>title 1</title>
  </book>
  <book year="2004">
    <title>title 2</title>
  </book>
</bib>

File: Query.xquery
<myNewBib>{
doc("Data.xml")/bib/book
}</myNewBib>
Output:
<?xml version="1.0" encoding="UTF-8"?>
<myNewBib>
   <book year="1988">
        <title>title 1</title>
    </book>
   <book year="2004">
        <title>title 2</title>
    </book>
</myNewBib>

XQuery and element

File: Data.xml
<?xml version="1.0"?>
<Books>
 <Book>A</Book>
 <Book>B</Book>
 <Book>C</Book>
</Books>
File: Query.xquery
<Books>
{doc("Data.xml")/Books/Book}
</Books>
Output:
<?xml version="1.0" encoding="UTF-8"?>
<Books>
   <Book>A</Book>
   <Book>B</Book>
   <Book>C</Book>
</Books>