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• join-combo-1.rq

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com.bigdata.rdf.sparql.ast.eval.join-combo-1.rq Maven / Gradle / Ivy

PREFIX :    

SELECT ?a ?y ?d ?z
{
    ?a :p ?c OPTIONAL { ?a :r ?d }.  
    ?a ?p 1 { ?p a ?y } UNION { ?a ?z ?p } 
}