SELECT id, ort, fachwort, ( 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.20199313978017) * (sin(RADIANS(lat)) * sin(0.8274764808667) + cos(RADIANS(lat)) * cos(0.8274764808667)) - sin(RADIANS(lng)) * sin(0.20199313978017)))) AS entfernung FROM literatur WHERE 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.20199313978017) * (sin(RADIANS(lat)) * sin(0.8274764808667) + cos(RADIANS(lat)) * cos(0.8274764808667)) - sin(RADIANS(lng)) * sin(0.20199313978017))) <= 25 ORDER BY entfernung