On 9/26/13 5:32 AM, Vianney le Clément wrote:
Hello,When trying to run the following query on the dbpedia dataset, Virtuoso 06.01.3127 returns the error Virtuoso 22003 Error SR087: Non numeric argument(s) to arithmetic operation. -- PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX dbpont: <http://dbpedia.org/ontology/> PREFIX dbpprop: <http://dbpedia.org/property/> SELECT * WHERE { ?place1 rdf:type dbpont:Place ; dbpprop:augHighC ?temp1 . ?place2 rdf:type dbpont:Place ; dbpprop:augHighC ?temp2 . FILTER ( ?temp1 - ?temp2 > 5 ) } ORDER BY ?temp1 ?temp2 LIMIT 1 -- The error also happens on the public dbpedia sparql endpoint at http://dbpedia.org/sparql with Virtuoso 07.00.3203. Removing the ORDER BY claus or the FILTER makes Virtuoso happy. However, the full query is perfectly valid in SPARQL and should yield a result. What's going on? Thanks, Vianney
Yep! This is a bug. Proof:1. http://lod.openlinksw.com/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=PREFIX+rdf%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0D%0APREFIX+dbpont%3A+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2F%3E%0D%0APREFIX+dbpprop%3A+%3Chttp%3A%2F%2Fdbpedia.org%2Fproperty%2F%3E%0D%0A%0D%0ASELECT+*%0D%0AWHERE+%7B%0D%0A++++%3Fplace1+rdf%3Atype+dbpont%3APlace+%3B%0D%0A++++++++++++dbpprop%3AaugHighC+%3Ftemp1+.%0D%0A++++%3Fplace2+rdf%3Atype+dbpont%3APlace+%3B%0D%0A++++++++++++dbpprop%3AaugHighC+%3Ftemp2+.%0D%0A++++FILTER+%28+%3Ftemp1+-+%3Ftemp2+%3E+5+%29%0D%0A%7D+ORDER+BY+%3Ftemp1+%3Ftemp2+LIMIT+1&format=text%2Fhtml&timeout=30000&debug=on -- lod.openlinksw.com in the host-cname (authority) part of URI
2. http://dbpedia.org/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=PREFIX+rdf%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0D%0APREFIX+dbpont%3A+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2F%3E%0D%0APREFIX+dbpprop%3A+%3Chttp%3A%2F%2Fdbpedia.org%2Fproperty%2F%3E%0D%0A%0D%0ASELECT+*%0D%0AWHERE+%7B%0D%0A++++%3Fplace1+rdf%3Atype+dbpont%3APlace+%3B%0D%0A++++++++++++dbpprop%3AaugHighC+%3Ftemp1+.%0D%0A++++%3Fplace2+rdf%3Atype+dbpont%3APlace+%3B%0D%0A++++++++++++dbpprop%3AaugHighC+%3Ftemp2+.%0D%0A++++FILTER+%28+%3Ftemp1+-+%3Ftemp2+%3E+5+%29%0D%0A%7D+ORDER+BY+%3Ftemp1+%3Ftemp2+LIMIT+1&format=text%2Fhtml&timeout=30000&debug=on -- dbpedia.org in the host-cname (authority) part of URI .
It will be resolved quickly. Kingsley
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