Re: [Virtuoso-users] SPARQL Conformance

Thomas, Yes, this is an intentional parser error. To make the FILTER condition meaningful, it should reside outside OPTIONAL, like this: PREFIX rdf: PREFIX foaf: PREFIX dc: PREFIX dcterm

[Virtuoso-users] SPARQL Conformance

Hi, I have seen in a recent post a question regarding the SPARQL conformance of Virtuoso. There you said, that "Virtuoso SPARQL does not match W3C recommendation 100%". Right now I get a parser error message for a query, which is answered by other SPARQL engines correctly. Is the parser er