What do you mean by failing? At first sight, there should be a common variable between the first request and the second one to make a joint.
Le 06/12/2017 à 19:31, Kingsley Idehen a écrit : > Hi Everyone, > > Does anyone know why the SPARQL-FED query at: > http://tinyurl.com/ycc2tkp3, is failing? > > Query Text: > > PREFIX wd: <http://www.wikidata.org/entity/> > PREFIX wdt: <http://www.wikidata.org/prop/direct/> > PREFIX wikibase: <http://wikiba.se/ontology#> > PREFIX schema: <http://schema.org/> > PREFIX bd: <http://www.bigdata.com/rdf#> > PREFIX psn: <http://www.wikidata.org/prop/statement/value-normalized/> > PREFIX pq: <http://www.wikidata.org/prop/qualifier/> > PREFIX dbo: <http://dbpedia.org/ontology/> > PREFIX dct: <http://purl.org/dc/terms/> > > > SELECT ?item ?dbpediaID ?label ?subjectName ?prominence ?image > WHERE > { > { > SELECT ?item ?itemLabel ?coord ?prominence ?layer ?image > WHERE { > ?item wdt:P31 wd:Q8502. # a mountain > ?item wdt:P625 ?coord. > ?item wdt:P17 wd:Q39. # in Switzerland > ?item wdt:P2660 ?prominence . > BIND( > IF(?prominence < 1000, "<1000 metres", > IF(?prominence < 2000, "1000 - 2000 metres", > IF(?prominence < 3000, "2000 - 3000 metres", > IF(?prominence < 4000, "3000 - 4000 metres", > "> 4000 metres")))) > AS ?layer). > OPTIONAL {?item wdt:P18 ?image.} > SERVICE wikibase:label { bd:serviceParam > wikibase:language "[AUTO_LANGUAGE],en". } > } > > LIMIT 200 } > > > SERVICE <http://dbpedia.org/sparql> > { > SELECT DISTINCT ?dbpediaID ?name ?label ?subjectName > WHERE { > ?dbpediaID owl:sameAs ?item ; > rdfs:label ?label ; > dct:subject ?subject. > FILTER (LANG(?label) = "en") > > ?subject rdfs:label ?subjectName . > > } > > } > > } > > > > > _______________________________________________ > Wikidata mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata
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