Am Mittwoch, 4. April 2007 14:42 schrieb Nikolay Samokhvalov: > > Why is the function not strict? > > Because in case of 3rd argument (NS mappings) being NULL, we shouldn't > return NULL immediately:
If the namespace mapping is NULL then it is unknown, and therefore the result of the XPath expression cannot be evaluated with certainty. If no namespace mapping is to be passed, then you should pass a list(/array/...) of length zero. -- Peter Eisentraut http://developer.postgresql.org/~petere/ ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
