On 02/28/2011 10:30 AM, Tom Lane wrote:
The single most pressing problem we've got with XML right now
is the poor state of the XPath extensions in contrib/xml2.  If we don't
see a meaningful step forward in that area, a new implementation of the
xml datatype isn't likely to win acceptance.


xpath_table is severely broken by design IMNSHO. We need a new design, but I'm reluctant to work on that until someone does LATERAL, because a replacement would be much nicer to design with it than without it.

But I don't believe replacing the underlying XML/XPath implementation would help us fix it at all.



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