如何从sql数据库中使用纬度和经度查找最近的位置？

Question

I want to find a nearest location from following database table

Address                            Latitude                longitude 

Kathmandu 44600, Nepal              27.7                   85.33333330000005
Los, Antoniterstraße                37.09024               -95.71289100000001
Sydney NSW, Australia               49.7480755             8.111794700000019
goa india                           15.2993265             74.12399600000003

I have fetched this all data from google maps. Here i have to find nearest location from a place. Suppose i am at place Surkhet its latitude is 28.6 and longitude is 81.6, how can i find nearest place from the place Surkhet.

Answer 1

SELECT id, ( 3959 * acos( cos( radians(37) ) * cos( radians( lat ) ) * cos( radians( lng ) - radians(-122) ) + sin( radians(37) ) * sin( radians( lat ) ) ) ) AS distance FROM markers HAVING distance < 25 ORDER BY distance LIMIT 0 , 20;

This is the Best Query