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Returns the minimum geodesic distance between two geography objects in meters. Uses S2 geometry-to-geometry distance (S2ClosestEdgeQuery), which computes the true minimum distance between any two points on the geometries — not centroid-to-centroid. ST_Distance on a sphere: great-circle distance between two points

Signatures

Parameters

Geography
required
The first geography.
Geography
required
The second geography.

Return type

The minimum geodesic distance between A and B, in meters.

Example

The result is approximately 157 km, the great-circle distance between (0,0) and (1,1) on the WGS84 sphere.