XSLT Muenchian grouping create key inside group
问题 My goal is to group the nodes first by <RowBreak> , then in each <RowBreak> group, I want to group by <ColumnBreak> . Here is my XML. <?xml version="1.0" encoding="utf-8" ?> <Tree> <Item> <Label>Item 1</Label> </Item> <Item> <Label>Item 2</Label> </Item> <ColumnBreak /> <Item> <Label>Item 3</Label> </Item> <Item> <Label>Item 4</Label> </Item> <Item> <Label>Item 5</Label> </Item> <RowBreak /> <Item> <Label>Item 6</Label> </Item> <Item> <Label>Item 7</Label> </Item> <ColumnBreak /> <Item>