Geo.PostGIS.st_distance_sphere
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st_distance_sphere
, go back to Geo.PostGIS module for more information.
Please note that ST_Distance_Sphere has been deprecated as of Postgis 2.2. Postgis 2.1 is no longer supported on PostgreSQL >= 9.5. This macro is still in place to support users of PostgreSQL <= 9.4.x.