Dear all, we talked a while ago about a possible integration between Zorba (http://www.zorba-xquery.com/html/index), the Apache open source XML (XQuery) and JSON query (jsoniq.org) processor into Postgress.
I think this would add a lot of functionality to Postgres, and the Zorba query processor is now in a stable and complete state. If you are interested please contact us at zorba-users at googlegroups dot com. Looking forward to a good collaboration ! Best regards Dana