Re: count(*), construct, how many reifications

[Benson Margulies]

Here's a working query with SELECT

SELECT  ?s ?p ?o (count(*) AS ?relCount)
WHERE {
 GRAPH x-arq:UnionGraph {
  ?s rex:text "Taliban" .
  ?r rdf:subject ?s .
  ?r rdf:object ?o .
  ?r rdf:predicate ?p .
  FILTER ( ?p IN (
<http://www.basistech.com/ontologies/2010/12/rules#acquired>,
<http://www.basistech.com/ontologies/2010/12/rules#acquired>,
<http://www.basistech.com/ontologies/2010/12/rules#costOfObject>,
<http://www.basistech.com/ontologies/2010/12/rules#nameChangeTo>,
<http://www.basistech.com/ontologies/2010/12/rules#locatedAt>,
<http://www.basistech.com/ontologies/2010/12/rules#phoneNumber>,
<http://www.basistech.com/ontologies/2010/12/rules#releasedProduct>,
<http://www.basistech.com/ontologies/2010/12/rules#supplierOf>,
<http://www.basistech.com/ontologies/2010/12/rules#subsidiaryOf>
) )
 }
}
GROUP BY ?s ?p ?o


How does all this work with CONSTRUCT? Can I do something like

CONSTRUCT { ?s ?p ?o .
                       ?s me:count (COUNT(*) as ?c) .
}