On 27/04/12 16:16, DAVID PATTERSON wrote:
If I make an error in building a set of data in a ttl file and have
:xa:Something ;
…
Where “Something” is not defined elsewhere in the data, is there an easy
way to find it?
I guess I could get a list of all resources and see if they were only
subclasses of rdf:Resource and use that to make the decision, but is
there an easier way?
Thanks.
Dave Patterson
Maybe:
SELECT *
{
?x a ?something
FILTER NOT EXISTS { ?something ?p ?o }
}
would return ?x where somehtign is not used as a subject.
Andy
