Problem with sparql MINUS

Tue, 10 Jan 2017 02:33:05 -0800 


Hi,

Could anyone help, whats the issue with my query using MINUS?


First, this returns all ~700 resources :

SELECT DISTINCT ?resource
WHERE {
  GRAPH <http://www.lingsoft.fi/ontologies/574ef1a40236a/>
  {
<http://www.lingsoft.fi/ontologies/574ef1a40236a/9db41bbf2114c46e> skos:narrower* ?child 
  }
  GRAPH <http://www.lingsoft.fi/resource-meta/> {
?resource dcterms:isPartOf <http://www.lingsoft.fi/rdf/uid/574ef1a40236a> . 
  }
}

And adding one condition (dcterms:subject) returns correctly ~300 resources

SELECT DISTINCT ?resource
WHERE {
  GRAPH <http://www.lingsoft.fi/ontologies/574ef1a40236a/>
  {
<http://www.lingsoft.fi/ontologies/574ef1a40236a/9db41bbf2114c46e> skos:narrower* ?child 
  }
  GRAPH <http://www.lingsoft.fi/resource-meta/> {
?resource dcterms:isPartOf <http://www.lingsoft.fi/rdf/uid/574ef1a40236a> . 
    ?resource dcterms:subject ?child
  }
}
But I would like to get the rest of docs, about ~400, that above is not returning 

SELECT DISTINCT ?resource
WHERE {
  GRAPH <http://www.lingsoft.fi/ontologies/574ef1a40236a/>
  {
<http://www.lingsoft.fi/ontologies/574ef1a40236a/9db41bbf2114c46e> skos:narrower* ?child 
  }
  GRAPH <http://www.lingsoft.fi/resource-meta/> {
?resource dcterms:isPartOf <http://www.lingsoft.fi/rdf/uid/574ef1a40236a> . 
    MINUS {
    ?resource dcterms:subject ?child
  }
  }
}
This query returns 0 results. I don't get what's wrong here. I'm using Jena Fuseki 2.3.1. 

Thanks,
Mikael

--
Lingsoft - 30 years of Leading Language Management

www.lingsoft.fi

Speech Applications - Language Management - Translation - Reader's and Writer's 
Tools - Text Tools - E-books and M-books

Mikael Pesonen
System Engineer

e-mail: [email protected]
Tel. +358 2 279 3300

Time zone: GMT+2

Helsinki Office
Eteläranta 10
FI-00130 Helsinki
FINLAND

Turku Office
Linnankatu 10 A
FI-20100 Turku
FINLAND

Reply via email to