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1.5.60. How Do I use CONSTRUCT with objects which are value of aggregate function?

The following section demonstrates usage example of CONSTRUCT Query with object which is a value of the aggregate function COUNT:

  1. Assume following SPARQL SELECT Query: 

    SELECT DISTINCT ?category COUNT(?category) AS ?count
WHERE
  {
    ?s<http://purl.org/dc/terms/subject> ?category
    FILTER(?s =<http://dbpedia.org/resource/Higgs_boson> || ?s =<http://dbpedia.org/resource/Gluon>)
  }

  2. To present it as CONSTRUCT Query, one should put "SELECT DISTINCT" into the CONSTRUCT's WHERE clause as a subquery. So for example it could be: 

    
CONSTRUCT
  {
    ?category a<http://www.w3.org/2004/02/skos/core#Concept> .
    ?category<http://www.turnguard.com/virtuoso/aggregates#count>  ?count
  }
WHERE
  {
    {
      SELECT DISTINCT ?category COUNT(?category) AS ?count
      WHERE
        {
          ?s <http://purl.org/dc/terms/subject> ?category
          FILTER(?s =<http://dbpedia.org/resource/Higgs_boson> || ?s =<http://dbpedia.org/resource/Gluon>)
        }
    }
  }
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