如何获得小于500的距离？

SELECT mm.mem_id, mm.profilenam, mm.photo_thumb, mm.city, mm.zip, mm.country, mm.state, ( 3956 *2 * ASIN( SQRT( POWER( SIN( ( 34.1012181 - ABS( latitude ) ) * PI( ) /180 /2 ) , 2 ) + COS( 34.1012181 * PI( ) /180 ) * COS( ABS( latitude ) * PI( ) /180 ) * POWER( SIN( (
ABS( - 118.325739 ) - ABS( longitude ) ) * PI( ) /180 /2 ) , 2 ) ) )
) AS distance
FROM members AS mm
WHERE mm.profile_type =  \'C\'
HAVING distance<500

SELECT mm.mem_id, mm.profilenam, mm.photo_thumb, mm.city, mm.zip, mm.country, mm.state, ( 3956 *2 * ASIN( SQRT( POWER( SIN( (        34.1012181 - ABS( latitude ) ) * PI( ) /180 /2 ) , 2 ) + COS( 34.1012181 * PI( ) /180 ) * COS( ABS( latitude ) * PI( ) /180 ) *   POWER( SIN( (
ABS( - 118.325739 ) - ABS( longitude ) ) * PI( ) /180 /2 ) , 2 ) ) )
) AS distance
FROM members AS mm
WHERE mm.profile_type =  \'C\'

HAVING distance < 500

ORDER BY distance
LIMIT 0 , 10