- 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