On Tue, May 14, 2013 at 9:48 AM, kristian kvilekval <k...@cs.ucsb.edu> wrote: > > I was really hoping to see be able to store several ten's of millions XML > documents in postgres, but I would also like to use Xquery to retrieve > results. Back in 2010 there was some mailing list discussion about using > integrating the xquery processor of zorba into postgres. I was trying to > gauge the interest level and if anybody had attempted it. As you say, JSON > has stolen all the thunder, and in fact the Zorba people have worked on > JSONiq (an xquery processor for JSON data structures), but our project uses > XML. We like the flexibility you get with Xquery and I am looking around > for some solutions.
Advise refining your requirements so that you can search your xml with xpath and then do transformations in sql -- this is more powerful than it looks on the surface. If you must use xquery, the shortest path to get there is possibly through a backend pl (say perl or python) so that you can tap into fancy xml support there. If not xpath, then xslt -- xquey is just a mess IMNSHO and should be avoided, especially for new programming efforts. JSON is superior in just about every way -- less verbose, more regular syntax, faster parsing. JSON is also very tightly integrated to postgres (especially with coming 9.3) so that serialization to/from database data is automagical and essentially eliminates the need for the querying/construction steps that make dealing with xml such a bear (especially when serializing from database). So much so that if I was tasked with complex xml transformations in the database I'd maybe consider converting them to json, doing the transformation, then back to xml again. merlin -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
