<?xml version="1.0" encoding="iso-8859-1"?> <?xml-stylesheet href="../make-menu.xsl" type="text/xsl"?><html> <head> <this-is section="expressions" page="for" subpage=""/> <!-- Generated at 2011-12-09T20:47:22.916Z--><title>Saxonica: XSLT and XQuery Processing: For Expressions</title> <meta name="coverage" content="Worldwide"/> <meta name="copyright" content="Copyright Saxonica Ltd"/> <meta name="title" content="Saxonica: XSLT and XQuery Processing: For Expressions"/> <meta name="robots" content="noindex,nofollow"/> <link rel="stylesheet" href="../saxondocs.css" type="text/css"/> </head> <body class="main"> <h1>For Expressions</h1> <p>The expression <code>for $x in E1 return E2</code> returns the sequence that results from evaluating <code>E2</code> once for every item in the sequence <code>E1</code>. Note that <code>E2</code> must use the range variable <code>$x</code> to refer to the item being tested; it does not become the context item. For example, <code>sum(for $v in order-item return $v/price * $v/quantity)</code> returns the total value of (price times quantity) for all the selected <code>order-item</code> elements.</p> <table width="100%"> <tr> <td> <p align="right"><a class="nav" href="boolean.xml">Next</a></p> </td> </tr> </table> </body> </html>