返回指定节点所定义的ID信息。语法Integer ST_NodeID(SFMesh sfmeshObject, integer nodeIndex);参数参数名称描述sfmeshObjectSFMesh对象。nodeIndex节点编号,从0开始。描述返回指定节点所定义的ID信息。示例SELECT ST_NodeID(ST_SetNodeID(the_mesh, 0, 100), 0) FROM t_table; ------------------- 100