How to do 'SUM' in XML?

[praise1234]

Hey there,
I am very new to XML. I have four fields in the database tables which needs to add up to have a total field by using XML language. I wasn't sure how to do it at all.
Please advice.

Thanks,-G

 

[simonchristieis]

the xml language you will be looking for is called xpath, the example uses xpath with xsl, sommat like :

<xsl:value-of select="sum(//myroot/myelements/@addthisup)"

hth

simon