- From: Kendall Clark <kendall@monkeyfist.com>
- Date: Wed, 7 Jun 2006 12:00:34 -0400
- To: Martin Soto <soto@informatik.uni-kl.de>
- Cc: public-rdf-dawg-comments@w3.org
On May 23, 2006, at 5:36 AM, Martin Soto wrote: > > Hello everyone! > > Trying to understand the latest draft SPARQL specification, I arrived > at the following query, which, as far as I can see, expresses a > paradox: > > PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> > PREFIX foaf: <http://xmlns.com/foaf/0.1/> > > SELECT DISTINCT ?p ?n ?h > WHERE { ?p rdf:type foaf:Person . > OPTIONAL {?p foaf:name ?n . > FILTER ( !bound(?h) ) } > OPTIONAL {?p foaf:homepage ?h . > FILTER ( !bound(?n) ) } > } Martin, Thanks for your comments. The DAWG is thinking about them and will get back to you with a response in due course. Cheers, Kendall Clark
Received on Wednesday, 7 June 2006 16:01:04 UTC