访问函数
- GeometryType
- ST_Boundary
- ST_CoordDim
- ST_Dimension
- ST_EndPoint
- ST_Envelope
- ST_BoundingDiagonal
- ST_ExteriorRing
- ST_GeometryN
- ST_GeometryType
- ST_InteriorRingN
- ST_IsPolygonCCW
- ST_IsPolygonCW
- ST_IsClosed
- ST_IsCollection
- ST_IsEmpty
- ST_IsRing
- ST_IsSimple
- ST_IsValid
- ST_IsValidReason
- ST_IsValidDetail
- ST_M
- ST_NDims
- ST_NPoints
- ST_NRings
- ST_NumGeometries
- ST_NumInteriorRings
- ST_NumInteriorRing
- ST_NumPatches
- ST_NumPoints
- ST_PatchN
- ST_PointN
- ST_Points
- ST_SRID
- ST_StartPoint
- ST_Summary
- ST_X
- ST_XMax
- ST_XMin
- ST_Y
- ST_YMax
- ST_YMin
- ST_Z
- ST_ZMax
- ST_Zmflag
- ST_ZMin