SELECT *,SQRT(POWER($latitude - latitude, 2) + POWER($longitude - longitude, 2)) AS d FROM table WHERE (latitude BETWEEN $min_latitude AND $max_latitude) AND (longitude BETWEEN $min_longitude AND $max_longitude) AND d < $i ORDER BY d ASC LIMIT 10;
SELECT *,SQRT(POWER(39.791056 - latitude, 2) + POWER(116.505985 - longitude, 2)) AS d FROM rv_franchiser_info WHERE (latitude BETWEEN 38 AND 40) AND (longitude BETWEEN 115 AND 117) AND d < 1 ORDER BY d ASC LIMIT 10;
SELECT *,SQRT(POWER(39.791056 - latitude, 2) + POWER(116.505985 - longitude, 2)) AS d FROM rv_franchiser_info WHERE (latitude BETWEEN 30 AND 40) AND (longitude BETWEEN 110 AND 120) AND d < 100 ORDER BY d ASC LIMIT 10;
SELECT *, ( 6371 * acos( cos(radians(32)) * cos( radians( latitude ) ) * cos(radians( longitude ) - radians(121)) + sin( radians(32) ) * sin( radians( latitude ) ) ) ) AS distance FROM rv_franchiser_info HAVING distance < 100 ORDER BY distance LIMIT 0 , 20;
SELECT *, ( 6371 * acos( cos(radians({$latitude})) * cos( radians( latitude ) ) * cos(radians( longitude ) - radians({$longitude})) + sin( radians({$latitude}) ) * sin( radians( latitude ) ) ) ) AS distance FROM rv_franchiser_info ORDER BY distance LIMIT 0 , 20;