SELECT id, ort, fachwort, (
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.19299746148798) * (sin(RADIANS(lat)) *
sin(0.83421781510253) + cos(RADIANS(lat)) *
cos(0.83421781510253)) - sin(RADIANS(lng)) * sin(0.19299746148798)))) AS entfernung
FROM literatur WHERE
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.19299746148798) * (sin(RADIANS(lat)) *
sin(0.83421781510253) + cos(RADIANS(lat)) *
cos(0.83421781510253)) - sin(RADIANS(lng)) * sin(0.19299746148798))) <= 10
ORDER BY entfernung