Count nodes : count « XQuery « XML

1. XML
2. XQuery
3. count

Count nodes

File: Data.xml

<?xml version="1.0"?>
<Books>
 <Book>book 1</Book>
 <Book>book 2</Book>
 <Book>book 3</Book>
</Books>



File: Query.xquery

<library count="{count(doc("Data.xml")/Books/Book)}">{
  for $b in doc("Data.xml")/Books/Book
    return <book>{$b/text()}</book>
 }</library>


Output:

<?xml version="1.0" encoding="UTF-8"?>
<library count="3">
   <book>book 1</book>
   <book>book 2</book>
   <book>book 3</book>
</library>

 

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