XQuery Sorting Expressions

Expression:

Example(s):

Sorting Expressions

1. <root>

   {

     LET $a := document("xqt")//tutorial/title

     RETURN $a SORTBY (title)

   }

   </root>

This xquery first assigns the variable $a all the available titles, returns them, and sorts them in by title, in ascending order, which is the default.

The output generated cannot be verified using MS XQuery Demo, because the SORTBY clause is still not supported; you can check that by running the xquery: the output is the following text:

'SORTBY' is not implemented.

It runs however when you delete the bolded phrase "SORTBY (title)", and its output is shown here:

<?xml version="1.0"?>

<root>

  <title>Introduction to XQuery</title>

  <title>XQuery's Syntax</title>

  <title>XQuery: Advanced Tricks</title>

</root>