- From: Steve Harris <S.W.Harris@ecs.soton.ac.uk>
- Date: Wed, 6 Apr 2005 17:13:14 +0100
- To: RDF Data Access Working Group <public-rdf-dawg@w3.org>
On Tue, Apr 05, 2005 at 11:00:53 -0500, Dan Connolly wrote:
> 4 difference
> Return the labels of all topics that are not titles of publications.
>
> I can imagine some contortion using bound() and OPTIONAL,
> but I can't figure it out, and I wouldn't expect the average
> user to be able to.
I think it depends if the average user is familar with SQL.
SELECT ?label
WHERE { ?topic rdfs:label ?label
?topic rdf:type foo:topic }
OPTIONAL { ?pub dc:title ?label
?pub rdf:type foo:publication }
FILTER !bound(?pub)
- Steve
Received on Wednesday, 6 April 2005 16:13:17 UTC