PostGIS
Description
Returns a box3d representing the 3D extent of the geometry.
Enhanced: 2.0.0 support for Polyhedral surfaces, Triangles and TIN was introduced.
This method supports Circular Strings and Curves
This function supports Polyhedral surfaces.
This function supports Triangles and Triangulated Irregular Network Surfaces (TIN).
This function supports 3d and will not drop the z-index.