How to use group by in xsl

I got one xml like this:
---------------------------------------------------------------------------------
<example>
<row>
<name>Peter</name>
<coursename>France</coursename>
<tuition>100</tuition>
<age>41</age>
</row>
<row>
<name>Mark</name>
<coursename>English</coursename>
<tuition>200</tuition>
<age>33</age>
</row>
<row>
<name>Peter</name>
<coursename>Spanish</coursename>
<tuition>300</tuition>
<age>41</age>
</row>
<row>
<name>Peter</name>
<coursename>English</coursename>
<tuition>200</tuition>
<age>41</age>
</row>
<row>
<name>Mark</name>
<coursename>France</coursename>
<tuition>100</tuition>
<age>33</age>
</row>
<row>
<name>John</name>
<coursename>France</coursename>
<age>53</age>
</row>
</example>
-----------------------------------------------------------------------
I would like to get the output could be group by name and the age should be older than 40.

just like this

Peter
English
France
Spanish
John
France

I tyied <xsl:for-each-group> and can't get it work. Any ideaqs.

Thanks

The tag is <xsl:for-each>, with select being the attribute corresponding to the elements which will be read, in your case, your for-each tag will probably look like this:



Hope that helps!

Happy coding!

Thanks for the quick reply. But I need to goup the name for output

Try this:

<xsl:for-each select="example/row[age > '40']/name">
<xsl:sort select="." />
<xsl:value-of select="." />
</xsl:for-each>