Hi Paul,
> //(sea|river|lake)
Due to the (somewhat peculiar) semantics of XPath, this path is identical to...
/descendant-or-self::node()/
(child::sea | child::river | child::lake)
...and it creates a massive amount of intermediate results. You could
try to rewrite it to...
/descendant::sea | /descendant::river |
/descendant::lake
...or...
/descendant::*[local-name() = ('sea', 'river', 'lake')]
...and I will try to tweak our optimizer to automatically do this for
you in future (it already works for single steps).
Christian
