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Finding id of last child in table structure

I am not sure if its efficient but this is how I solve such "tree/hierarchy" problem. WITH RECURSIVE message_tree(message_id, message_ids, hierarchy_level) AS ( -- create a tree by using ...
Sahap Asci's user avatar
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12 votes

Is "ROW_NUMBER() OVER(ORDER BY xml.node)" well defined?

No, it's not documented and therefore not guaranteed. In practice, it probably is guaranteed as I described in a Stack Overflow answer (reproduced below) but that doesn't meet your stated desire for ...
Paul White's user avatar
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