SELECT id, ort, fachwort, ( 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.19428172013016) * (sin(RADIANS(lat)) * sin(0.83983520267864) + cos(RADIANS(lat)) * cos(0.83983520267864)) - sin(RADIANS(lng)) * sin(0.19428172013016)))) AS entfernung FROM literatur WHERE 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.19428172013016) * (sin(RADIANS(lat)) * sin(0.83983520267864) + cos(RADIANS(lat)) * cos(0.83983520267864)) - sin(RADIANS(lng)) * sin(0.19428172013016))) <= 25 ORDER BY entfernung