Returns the 3D minimum bounding box (MBB) that encloses a 3D ST_Geometry.
Returns an MBB value.
All 3D ST_Geometry types.
MBB can return a two-dimensional MBB, if appropriate. Such an MBB has z coordinates that are all zero.
If the 3D input geometry is empty, all of the coordinates of the resulting MBB will be zero.