SELECT id, ort, fachwort, (
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.19148569568715) * (sin(RADIANS(lat)) *
sin(0.85575668429129) + cos(RADIANS(lat)) *
cos(0.85575668429129)) - sin(RADIANS(lng)) * sin(0.19148569568715)))) AS entfernung
FROM literatur WHERE
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.19148569568715) * (sin(RADIANS(lat)) *
sin(0.85575668429129) + cos(RADIANS(lat)) *
cos(0.85575668429129)) - sin(RADIANS(lng)) * sin(0.19148569568715))) <= 10
ORDER BY entfernung