Re: Problem with sparql MINUS

[Rob Vesse]

The two ?child variables occur in different scopes. Therefore your MINUS is 
subtracting all resources that have any value for dcterms:subject which is 
almost certainly not your intent

Movingthe earlier pattern that selects specific ?child values of interest 
inside of the minus likely gives you the results you were after because that 
puts the two variables in the same scope

Rob

On 10/01/2017 10:32, "Mikael Pesonen" <mikael.peso...@lingsoft.fi> wrote:

    
    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: mikael.peso...@lingsoft.fi
    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