Am Mittwoch, 4. April 2007 14:42 schrieb Nikolay Samokhvalov:
> Maybe it's worth to start keeping additional information in xml datum (i.e.
> bit IS_DOCUMENT and, what is more important for xpath() function, a bit
> indicating that XML value has only one root and can be considered as a tree
> => there is no need to wrap with <x> .. </x>). But this change requires
> additional time to design xml datum structure and to rework the code
> (macros, I/O functions...).
To determine if an XML datum is a document, call xml_is_document(). The
implementation of that function is probably not the best possible one, but
what the xpath() code does it totally wrong nevertheless.
--
Peter Eisentraut
http://developer.postgresql.org/~petere/
