On Sun, 2009-03-01 at 18:22 -0500, Andrew Dunstan wrote: > I think the XML type needs to conform to the SQL/XML spec. However, we > are trying to apply XPath, which has a different data model, to that > type - hence the impedance mismatch. > > I think that the best we can do (for 8.4, having fixed 8.3 as best we > can without adversely changing behaviour) is to throw the > responsibility > for ensuring that the XML passed to the function is an XML document > back on the programmer. Anything else, especially any mangling of the > XPath > expression, presents a very real danger of breaking on correct input.
Can we provide a single function to bridge the gap between fragment and document? It will be clearer to do this than to see various forms of appending/munging, even if that function is a simple wrapper around an append. -- Simon Riggs www.2ndQuadrant.com PostgreSQL Training, Services and Support -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
