SELECT
	 test2861_person.oid,
	 test2861_person.name,
	 test2861_person.creator,
	 test2861_naturalperson.oid,
	 test2861_naturalperson.socialsecuritynumber,
	 test2861_legalperson.oid,
	 test2861_legalperson.federaltaxnumber 
FROM 
	test2861_person LEFT JOIN test2861_naturalperson ON test2861_person.oid=test2861_naturalperson.oid LEFT JOIN test2861_legalperson ON test2861_person.oid=test2861_legalperson.oid
WHERE test2861_person.oid=?