SELECT id, ort, fachwort, ( 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.21931873004941) * (sin(RADIANS(lat)) * sin(0.83413756660886) + cos(RADIANS(lat)) * cos(0.83413756660886)) - sin(RADIANS(lng)) * sin(0.21931873004941)))) AS entfernung FROM literatur WHERE 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.21931873004941) * (sin(RADIANS(lat)) * sin(0.83413756660886) + cos(RADIANS(lat)) * cos(0.83413756660886)) - sin(RADIANS(lng)) * sin(0.21931873004941))) <= 25 ORDER BY entfernung