Re: [jena-dev] Building RDF Schema information from TDB Dataset [ ARQ, TDB ]

[Paolo Castagna]

Dave Reynolds wrote:

If you just want to list the properties and classes that are used then
you can do things like:

  SELECT DISTINCT ?p WHERE {?s ?p ?o.}

  SELECT DISTINCT ?cls WEHRE {?i a ?cls.}

Any idea to speed up these two queries (for large TDB datasets) is welcome! :-)

Paolo