Il 11/03/2010 13:39, "Manuel Schölling" ha scritto:
> But that's ok. All I want is that the results "-79" and -79 are merged by the
> UNION statement and this is accomplished using FILTER.
>
Actually FILTER does not merge results, but it drops out results that do
no respect the filtering. For example, if your query is:
SELECT ?meltingPoint
WHERE {
?s rdfs:label "Nikotin"@de .
{ ?s<http://dbpedia.org/property/meltingPoint> ?meltingPoint }
UNION
{ ?s<http://dbpedia.org/ontology/meltingPoint> ?meltingPoint } .
FILTER( xsd:string($meltingPoint))
}
You will not have any results.
cheers,
roberto
--
Roberto Mirizzi
Ph.D student at Politecnici di Bari (ITALY)
http://sisinflab.poliba.it/mirizzi
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