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com.bigdata.rdf.sparql.ast.eval.hash-join-2.rq Maven / Gradle / Ivy

PREFIX rdf:  
PREFIX rdfs: 
PREFIX foaf: 

SELECT ?x ?o
WHERE {

  # Turn off the query optimizer for this query so we can control the order
  # in which the BGPs will be evaluated.
  
  hint:Query hint:optimizer "None" .

  # Force the use of the JVM hash joins.
  hint:Query hint:nativeHashJoins "false" .

  ?x rdf:type foaf:Person .

  ?x rdfs:label ?o .

  # Request a hash join for the rdfs:label BGP.  
  hint:Prior hint:hashJoin "true" .
  hint:Prior hint:com.bigdata.bop.IPredicate.keyOrder "PCSO" . # default is POCS
}