On 10 Sep 2014, at 11:59, Wolfgang Laun wolfgang.laun@xxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> "Sorting" is just one particular case of "changing the structure".
>

Yes, but it's not true that all structural changes are non-streamable. For
example, order-preserving grouping and flattening operations, and many
aggregation operations, are streamable.

I simply chose sorting as a concrete example of something that was
self-evidently non-streamable. Of course it was only an example.

Michael Kay
Saxonica