Nikolay Samokhvalov wrote:
> 2. what should I do with XPath function? There is strong analogy
> between its case and array's case in my mind... Should I leave NULLs,
> or empty arrays are better?
Empty array appears to be correct. The fact that arrays don't appear to
work as you might like is a different problem that should not affect
the specification of the XPath functionality.
--
Peter Eisentraut
http://developer.postgresql.org/~petere/