Name
ST_IsSolid — Test if the geometry is a solid. No validity check is performed.
Synopsis
booleanST_IsSolid(geometry geom1);
Description
Availability: 2.2.0
 This method needs SFCGAL backend.
 This function supports 3d and will not drop the z-index.
 This function supports Polyhedral surfaces.
 This function supports Triangles and Triangulated Irregular Network Surfaces (TIN).