- From: Patrick van Kleef <pkleef@openlinksw.com>
- Date: Mon, 27 Sep 2010 11:59:02 +0200
- To: Christophe Guéret <cgueret@few.vu.nl>
- Cc: Linked Data community <public-lod@w3.org>
Hi Christophe, > There seems to be an issue with the SPARQL end point of DBPedia, http://dbpedia.org/sparql > . > > When I run this first query: > SELECT ?result WHERE {<http://dbpedia.org/resource/WVNS-DT2> <http://dbpedia.org/ontology/formationDate > > ?result. } > I get the following result telling me that ?result is a date: > <sparql xmlns="http://www.w3.org/2005/sparql-results#" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance > " xsi:schemaLocation="http://www.w3.org/2001/sw/DataAccess/rf1/result2.xsd > "> > <head> > <variable name="result"/> > </head> > <results distinct="false" ordered="true"> > <result> > <binding name="result"><literal datatype="http://www.w3.org/2001/XMLSchema#date > ">2006-09-13</literal></binding> > </result> > </results> > </sparql> > > But when I want to find a resource which matches that specific date, > no result are returned: > SELECT ?result WHERE { ?result <http://dbpedia.org/ontology/formationDate > > "2006-09-13"^^<http://www.w3.org/2001/XMLSchema#date>. } > gives > <sparql xmlns="http://www.w3.org/2005/sparql-results#" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance > " xsi:schemaLocation="http://www.w3.org/2001/sw/DataAccess/rf1/result2.xsd > "> > <head> > <variable name="result"/> > </head> > <results distinct="false" ordered="true"> > </results> > </sparql> > > Could this be a bug of some sort? I also tried to run the same > couple of queries on http://lod.openlinksw.com/sparql and everything > works fine there. We will investigate this and report back to the list. Patrick
Received on Monday, 27 September 2010 10:00:20 UTC