tests/core/subqueries/subqueries-union-3.rq


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SELECT ?s COALESCE(?a, '') COALESCE(?b, '') WHERE {
	{
		SELECT ?s "message" AS ?a
		WHERE { ?s a example:Message }
	} UNION {
		SELECT ?s "group" AS ?b
		WHERE { ?s a example:Group }
	}
} ORDER BY ?s ?a ?b