No, it does not supported. There is two ways to ordering results, when path may be used as criteria:
Order by property with value type NAME or PATH (jcr supports it).
Order by jcr:path - sort by exact path of node (jcr do not supports it).
Order by jcr:path
If no order specification is supplied in the query statement, implementations may support document order on the result nodes (see 6.6.4.2 Document Order). And it is sorted by order number.
By default, (if query do not contains any ordering statements) result nodes is sorted by document order.
SELECT * FROM nt:unstructured WHERE jcr:path LIKE 'testRoot/%'
For specified jcr:path ordering there is different proceeding in XPath and SQL:
SQL no matter ascending or descending - query returns result nodes in random order: {code}SELECT * FROM nt:unstructured WHERE jcr:path LIKE 'testRoot/%' ORDER BY jcr:path{code}
XPath - jcr:path order construction is ignored (so result is not sorted according path); {code}/testRoot/* @jcr:primaryType='nt:unstructured' order by jcr:path{code}