Name
ST_MakeSolid — 将几何图形投射到实体中。不执行任何检查。要获取有效实体，输入几何图形必须是闭合多面体曲面或闭合三角网。
Synopsis
geometry ST_MakeSolid(geometry geom1);
描述
可用性：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).