SELECT id, ort, fachwort, (
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.20230003673051) * (sin(RADIANS(lat)) *
sin(0.84025358951627) + cos(RADIANS(lat)) *
cos(0.84025358951627)) - sin(RADIANS(lng)) * sin(0.20230003673051)))) AS entfernung
FROM literatur WHERE
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.20230003673051) * (sin(RADIANS(lat)) *
sin(0.84025358951627) + cos(RADIANS(lat)) *
cos(0.84025358951627)) - sin(RADIANS(lng)) * sin(0.20230003673051))) <= 10
ORDER BY entfernung