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

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