SELECT id, ort, fachwort, ( 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.23656629854716) * (sin(RADIANS(lat)) * sin(0.85239120256594) + cos(RADIANS(lat)) * cos(0.85239120256594)) - sin(RADIANS(lng)) * sin(0.23656629854716)))) AS entfernung FROM literatur WHERE 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.23656629854716) * (sin(RADIANS(lat)) * sin(0.85239120256594) + cos(RADIANS(lat)) * cos(0.85239120256594)) - sin(RADIANS(lng)) * sin(0.23656629854716))) <= 25 ORDER BY entfernung