ST_GeomFromEWKT-ApsaraDB RDS(RDS)-阿里云帮助中心

Constructs a geometry object from an Extended Well-Known Text (EWKT) string.

Syntax

geometry ST_GeomFromEWKT(text eWKT);

Parameters

Parameter	Description
eWKT	The EWKT string.

Description

This function supports circular strings, curves, polyhedral surfaces, triangles, triangulated irregular network (TIN) surfaces, and 3D objects.

Examples

Construct a CircularString object.

SELECT ST_GeomFromEWKT('CIRCULARSTRING(200000 150000 0,21000 160000 0,220000 170000 1)');
                        st_geomfromewkt
---------------------------------------------------------------
 01080000800300000000000000006A084100000000804F024100000000000.
.00000000000000082D4400000000000880341000000000000000000000000.
.00DB0A410000000080C00441000000000000F03F
(1 row)