zamestnanec a osoba ze stejne zeme

SELECT DISTINCT os.uID ,os.jmeno ,os.zeme ,po.zeme FROM osoba os
INNER JOIN objednavka obj ON obj.uID = os.uID
INNER JOIN zamestnanec z ON z.zaID = obj.zaID
INNER JOIN pobocka po ON  po.pID = z.pID
WHERE
po.zeme = os.zeme