Hi,

While processing a XML-file with xquery I need to find the nearest ancestor that has a child-element with a certain ID-value( $refID).

I found this solution [1] but I was wondering if also a solution is possible that makes use of the ancestor being a reverse-axis[ 2].

That way I could replace the [ last()]-predicate with a [1]-predicate, which I find more transparant. Also my gut-feeling tells me that would be a more efficient solution then the current one.

[ 1] ( $element/ancestor::*/child::*[ @ID = $refID] ) [ last()]

[ 2] https://www.w3.org/TR/xquery-30/#id-predicate

TIA for your replies,

Take care,

Rob Stapper