SELECT id, ort, fachwort, (
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.1916212047956) * (sin(RADIANS(lat)) *
sin(0.84400339974358) + cos(RADIANS(lat)) *
cos(0.84400339974358)) - sin(RADIANS(lng)) * sin(0.1916212047956)))) AS entfernung
FROM literatur WHERE
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.1916212047956) * (sin(RADIANS(lat)) *
sin(0.84400339974358) + cos(RADIANS(lat)) *
cos(0.84400339974358)) - sin(RADIANS(lng)) * sin(0.1916212047956))) <= 10
ORDER BY entfernung