sum Function
Returns the sum of all nodes in the node-set. Each node is first converted to a number value before summing.
number sum(node-set)
Example
This example demonstrates the XPath expression sum(//a)
. It returns 6, which is the sum of the numbers in <a>
elements.
XML File (as.xml)
<?xml version='1.0'?> <?xml-stylesheet type="text/xsl" href="sum.xsl"?> <root> <a>1</a> <a>3</a> <a>2</a> </root>
XSLT File (sum.xsl)
<?xml version='1.0'?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:template match="/"> <xsl:value-of select='sum(//a)'/> </xsl:template> </xsl:stylesheet>
Formatted Output
6
Processor Output
<?xml version="1.0" encoding="UTF-16"?>6
See Also
Data Types in Schemas | XDR Schema Data Types Reference | XML Data Types Reference