SELECT id, ort, fachwort, (
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.17229122430817) * (sin(RADIANS(lat)) *
sin(0.8697642378462) + cos(RADIANS(lat)) *
cos(0.8697642378462)) - sin(RADIANS(lng)) * sin(0.17229122430817)))) AS entfernung
FROM literatur WHERE
6368 * SQRT(2*(1-cos(RADIANS(lng)) *
cos(0.17229122430817) * (sin(RADIANS(lat)) *
sin(0.8697642378462) + cos(RADIANS(lat)) *
cos(0.8697642378462)) - sin(RADIANS(lng)) * sin(0.17229122430817))) <= 10
ORDER BY entfernung