MySQL - Find points within radius from database

Question

I have a table which has a POINT column containing the latitude and longitude of various locations.

I then also have a users location from geo-location

Answer 1

May be this help for you, https://ru.scribd.com/presentation/2569355/Geo-Distance-Search-with-MySQL

For Django I use this

    dist = 20 #дистанция 20 км
    mylon = 51.5289156201 # долгота центра
    mylat = 46.0209384922 # широта 
    lon1 = mylon-dist/abs(math.cos(math.radians(mylat))*111.0) # 1 градус широты = 111 км
    lon2 = mylon+dist/abs(math.cos(math.radians(mylat))*111.0)
    lat1 = mylat-(dist/111.0)
    lat2 = mylat+(dist/111.0)
    profiles = UserProfile.objects.filter(lat__range=(lat1, lat2)).filter(lon__range=(lon1, lon2))

It search all users in squar 20km.