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Mysql takes the specified latitude and longitude to calculate the distance from the database.

Source: Internet
Author: User
Tags asin cos pow sin
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Formulas such as the following, unit meters: 1th Latitude: lng1 lat1 2nd latitude and Longitude: lng2 lat2round (6378.138*2*asin (Pow (sqrt (LAT1*PI ()/180-LAT2*PI (180)/2), 2 ) +cos (Lat1*pi ()/180) *cos (Lat2*pi ()/180) *pow (Sin ((Lng1*pi ()/180-lng2*pi ()/180)/2), 2))) *1000) For example: SELECT store_id, Lng,lat,round (6378.138*2*asin (SQRT (POW (22.299439*pi ()/180-lat*pi ()/180)/2), 2) +cos (22.299439*pi ()/180) *COS (Lat*pi ()/180) *pow (SIN ((114.173881*pi ()/180-lng*pi ()/180)/2), 2))) *1000) as Julifrom Store_info having juli > 500ORDER by Juli Desclimit 100


Mysql takes the specified latitude and longitude to calculate the distance from the database.

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