• Chapter 1: Getting Started with Stylus Studio
• Chapter 2: Editing and Querying XML
• Chapter 3: Converting Non-XML Files to XML
• Chapter 4: Working with XSLT
• Chapter 5: Creating XSLT Using the XSLT Mapper
• Chapter 6: Debugging Stylesheets
• Chapter 7: Defining XML Schemas
• Chapter 8: Defining Document Type Definitions
• Chapter 9: Writing XPath Expressions
  • About the XPath Processor
  • Sample Data for Examples and Testing
  • Getting Started with Queries
  • Specifying the Nodes to Evaluate
  • Handling Strings and Text
  • Specifying Boolean Expressions and Functions
  • Specifying Number Operations and Functions
  • Comparing Values
  • Finding a Particular Node
  • Obtaining a Union
  • Obtaining Information About a Node or a Node Set
  • Using XPath Expressions in Stylesheets
  • Accessing Other Documents During Query Execution
  • XPath Quick Reference
• Chapter 10: Working with XQuery in Stylus Studio
• Chapter 11: Composing Web Service Calls
• Chapter 12: Accessing Relational Data as XML
• Chapter 13: Extending Stylus Studio
• Chapter 14: Stylus Studio Reference

Home > Online Product Documentation > Table of Contents > Examples of Specifying Positions

Examples of Specifying Positions

The following query finds the first and fourth author elements:

author [(position() = 4) or (position() = 1)]
               

            

The next query finds the first, the third through the fifth, and the last author elements:

author [(position() = 1) or 
               

              

                
(position() >= 3 and position() <= 5) or 
                   
(position() = last())]
                   

                
              

            

The XPath processor removes duplicate values. For the previous query, if there are only five elements in the collection, the query returns only one copy of the fifth element.

The next example finds all author elements in which the first degree is a Ph.D.:

author[degree[1] = "Ph.D."]