SELECT id, ort, fachwort, ( 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.20677403692582) * (sin(RADIANS(lat)) * sin(0.83616955404658) + cos(RADIANS(lat)) * cos(0.83616955404658)) - sin(RADIANS(lng)) * sin(0.20677403692582)))) AS entfernung FROM literatur WHERE 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.20677403692582) * (sin(RADIANS(lat)) * sin(0.83616955404658) + cos(RADIANS(lat)) * cos(0.83616955404658)) - sin(RADIANS(lng)) * sin(0.20677403692582))) <= 25 ORDER BY entfernung