DOUBLE ST_Angle_Sphere(DOUBLE x_lng, DOUBLE x_lat, DOUBLE y_lng, DOUBLE y_lat)
Calculates the central angle between two points on the Earth's surface. The incoming parameters are the longitude of point X, the latitude of point X, the longitude of point Y and the latitude of point Y.
x_lng and y_lng are Longitude values, must be in the range [-180, 180]. x_lat and y_lat are Latitude values, must be in the range [-90, 90].
mysql> select ST_Angle_Sphere(116.35620117, 39.939093, 116.4274406433, 39.9020987219); +---------------------------------------------------------------------------+ | st_angle_sphere(116.35620117, 39.939093, 116.4274406433, 39.9020987219) | +---------------------------------------------------------------------------+ | 0.0659823452409903 | +---------------------------------------------------------------------------+ 1 row in set (0.06 sec) mysql> select ST_Angle_Sphere(0, 0, 45, 0); +----------------------------------------+ | st_angle_sphere(0.0, 0.0, 45.0, 0.0) | +----------------------------------------+ | 45 | +----------------------------------------+ 1 row in set (0.06 sec)
ST_ANGLE_SPHERE,ST,ANGLE,SPHERE