SELECT id, ort, fachwort, (
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.18454889853773) * (sin(RADIANS(lat)) *
sin(0.84840620920256) + cos(RADIANS(lat)) *
cos(0.84840620920256)) - sin(RADIANS(lng)) * sin(0.18454889853773)))) AS entfernung
FROM literatur WHERE
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.18454889853773) * (sin(RADIANS(lat)) *
sin(0.84840620920256) + cos(RADIANS(lat)) *
cos(0.84840620920256)) - sin(RADIANS(lng)) * sin(0.18454889853773))) <= 10
ORDER BY entfernung