- From: Jonathan Robie <jonathan.robie@datadirect-technologies.com>
- Date: Fri, 07 Mar 2003 05:14:47 -0500
- To: Nitin Mangtani <nitinm@bea.com>, Jim Melton <jim.melton@acm.org>, Michael Burbidge <mburbidg@adobe.com>
- Cc: www-ql@w3.org
At 09:03 PM 3/6/2003 -0800, Nitin Mangtani wrote: >Jim, > > Sorry for jumping on this tread late, why "Group By" did not make into > XQuery spec. I understand one can use combination of distinct and > aggregate function to simulate a Group By. But having a direct Group By > makes life much easier for everyone (Customers, Vendors, you? and me;) ). One simple answer is that Group By is complex, the relational Group By does not map cleanly into XQuery so we would need to come up with a different Group By, we have not had consensus for any of the Group By proposals that have been put forward, and we do not yet have a good set of use cases that we agree on. I think this is something we should study in XQuery 2.0, but I do think we can have a very useful XML query language without it, and adding features at the same time we are trying to finalize the standard is a recipe for disaster. We should not try to squeeze in anything new unless it is absolutely crucial. My opinion only, not that of the Working Group. Jonathan
Received on Friday, 7 March 2003 05:14:59 UTC