On 10/11/16 4:37 PM, Safran, Tracy (NIH/NCI) [C] wrote: > > I am having problems doing some slightly advanced queries against > http. A simple query works but other queries don’t. Is there a > deeper issue with permissions or indexes that I need to look into? > > > > Example: This works. > > > > /SELECT * / > > / FROM <http://NCIT_NG1> where { ?s ?p ?o } LIMIT 50/ > > > > But this does not (note: prefix left out for brevity) > > /SELECT ?subject ?role ?object/ > > / WHERE {/ > > / ?subject rdfs:subClassOf ?an ./ > > / ?an owl:onProperty ?role ./ > > / ?an owl:someValuesFrom ?object ./ > > / ?subject rdfs:subClassOf* ncit:Gene/ > > / }/ > > / ORDER BY _asc_(?subject)/ > > > > Tracy M. Safran > > Programmer Analyst - EVS support > > Frederick National Laboratory for Cancer Research > > Leidos Biomedical Research, Inc. > > Ph: 240-276-5172 > > tracy.saf...@fnlcr.nih.gov <mailto:tracy.saf...@fnlcr.nih.gov> >
I assume you are getting: Virtuoso 37000 Error TR...: transitive start not given ? You need to add some qualification to the query to optimize for unknowns such as db size and available memory. Examples: 1. http://dbpedia.org/sparql?default-graph-uri=&query=SELECT+distinct+%3Fsubject+%3Fobject%0D%0A%0D%0A++++WHERE+%7B%0D%0A%0D%0A%0D%0A++++++++%3Fsubject+a+owl%3AClass+.%0D%0A++++++++%3Fobject+a+owl%3AClass+.%0D%0A++++++++%3Fsubject+rdfs%3AsubClassOf*+%3Fobject+.+%0D%0A%0D%0A++++++++filter+%28contains%28xsd%3Astring%28%3Fsubject%29%2C%27dbpedia.org%27%29%29%0D%0A++++++++%7D%0D%0A%0D%0A++++ORDER+BY+asc%281%29%0D%0A%0D%0ALIMIT+100&format=text%2Fx-html%2Btr&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000&debug=on -- DBpedia Static 2. http://dbpedia-live.openlinksw.com/sparql?default-graph-uri=&query=SELECT+distinct+%3Fsubject+%3Fobject%0D%0A%0D%0A++++WHERE+%7B%0D%0A%0D%0A%0D%0A++++++++%3Fsubject+a+owl%3AClass+.%0D%0A++++++++%3Fobject+a+owl%3AClass+.%0D%0A++++++++%3Fsubject+rdfs%3AsubClassOf*+%3Fobject+.+%0D%0A%0D%0A++++++++filter+%28contains%28xsd%3Astring%28%3Fsubject%29%2C%27dbpedia.org%27%29%29%0D%0A++++++++%7D%0D%0A%0D%0A++++ORDER+BY+asc%281%29%0D%0A%0D%0ALIMIT+100&format=text%2Fx-html%2Btr&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000&debug=on -- DBpedia Live 3. http://lod.openlinksw.com/sparql?default-graph-uri=&query=SELECT+distinct+%3Fsubject+%3Fobject%0D%0A%0D%0A++++WHERE+%7B%0D%0A%0D%0A%0D%0A++++++++%3Fsubject+a+owl%3AClass+.%0D%0A++++++++%3Fobject+a+owl%3AClass+.%0D%0A++++++++%3Fsubject+rdfs%3AsubClassOf*+%3Fobject+.+%0D%0A%0D%0A++++++++filter+%28contains%28xsd%3Astring%28%3Fsubject%29%2C%27umbel%27%29%29%0D%0A++++++++%7D%0D%0A%0D%0A++++ORDER+BY+asc%281%29%0D%0A%0D%0ALIMIT+100&format=text%2Fx-html%2Btr&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000&debug=on -- massive 30 Billion+ LOD Cloud Cache -- Regards, Kingsley Idehen Founder & CEO OpenLink Software (Home Page: http://www.openlinksw.com) Weblogs (Blogs): Legacy Blog: http://www.openlinksw.com/blog/~kidehen/ Blogspot Blog: http://kidehen.blogspot.com Medium Blog: https://medium.com/@kidehen Profile Pages: Pinterest: https://www.pinterest.com/kidehen/ Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen Twitter: https://twitter.com/kidehen Google+: https://plus.google.com/+KingsleyIdehen/about LinkedIn: http://www.linkedin.com/in/kidehen Web Identities (WebID): Personal: http://kingsley.idehen.net/dataspace/person/kidehen#this : http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
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