Query with Booleans

• XQuery booleans include:

  • and

  • or

  • not()

• List books published by Addison-Wesley after 1993:

  <bib>
   {
     for $b in document("bib.xml")/bib/book
     where $b/publisher = "Addison-Wesley" and $b/@year > 1993
     return
        $b/title 
   }
  </bib>
  

Adapted from XML Query Use Cases