I'm also experiencing issues and finding 502 Bad Gateway errors. However, they aren't related to regular expressions. These issues also appear in other cases, even with the simplest queries.
https://davidabian.com/downloads/wikidata/502-error-sparql.png El 25/09/16 a las 12:32, Ed Summers escribió: > I've been experimenting a bit with queries that contain regular expressions > and have noticed that they seem to be triggering 502 Bad Gateway errors. Or > perhaps it's just a coincidence and there were other things going on around > 10AM GMT? > > Here's an example query where I'm looking for cities that start with "Silver": > > --- > > PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> > PREFIX wd: <http://www.wikidata.org/entity/> > PREFIX wdt: <http://www.wikidata.org/prop/direct/> > > SELECT ?s ?label > WHERE { > ?s wdt:P31 wd:Q515 . > ?s rdfs:label ?label > FILTER(regex(?label, "^Silver")) > } > LIMIT 15 > > --- > > Am I doing something wrong in the query? Occasionally it seems to work, but > most of the time it waits for a while and then I get the 502 error. Any > guidance you may have would be appreciated. > > //Ed -- David Abián - davidabian.com Junta Directiva Wikimedia España Vega Sicilia, 2 47008 - Valladolid https://wikimedia.es Wikimedia España es una asociación sin ánimo de lucro española con CIF G-10413698 inscrita en el Registro Nacional de Asociaciones, Grupo 1, Sección 1, Núm. Nacional 597390. «Imagina un mundo en el que cada persona tenga acceso libre a todo el conocimiento». _______________________________________________ Wikidata mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata
