XSLT, 2nd Edition

Grouping Is Much, Much Easier

Grouping in XSLT 2.0 is orders of magnitude easier than it was in XSLT 1.0. The <xsl:for-each-group> element can make your code as much as 80% smaller, depending on the complexity of your XSLT 1.0 stylesheets. If your existing stylesheets do grouping, the new grouping support in XSLT 2.0 can make them much more elegant. See the section [2.0] New Grouping Syntax in XSLT 2.0” in Chapter 7 for all the details.