jena-arq/testing/ARQ/OptFilterEquality/filter-equality-10.rq - jena - Git at Google

 PREFIX : <http://example.org/>

 SELECT *
 {
    ?x :qq ?v
    OPTIONAL { ?x :p ?o2
        OPTIONAL { ?x :qq ?o1 }
    }
    FILTER(?x = :x)
 }
	PREFIX : <http://example.org/>

	SELECT *
	{
	?x :qq ?v
	OPTIONAL { ?x :p ?o2
	OPTIONAL { ?x :qq ?o1 }
	}
	FILTER(?x = :x)
	}