The Ultimate Guide to High Availability with MariaDB

ST_BOUNDARY

You are viewing an old version of this article. View the current version here.
MariaDB starting with 10.1.2

The ST_BOUNDARY function was introduced in MariaDB 10.1.2

Syntax

ST_BOUNDARY(g)
BOUNDARY(g)

Description

Returns a geometry that is the closure of the combinatorial boundary of the geometry value g.

BOUNDARY() is a synonym.

Examples

SELECT ST_AsText(ST_Boundary(ST_GeomFromText('LINESTRING(3 3,0 0, -3 3)')));
+----------------------------------------------------------------------+
| ST_AsText(ST_Boundary(ST_GeomFromText('LINESTRING(3 3,0 0, -3 3)'))) |
+----------------------------------------------------------------------+
| MULTIPOINT(3 3,-3 3)                                                 |
+----------------------------------------------------------------------+

SELECT ST_AsText(ST_Boundary(ST_GeomFromText('POLYGON((3 3,0 0, -3 3, 3 3))')));
+--------------------------------------------------------------------------+
| ST_AsText(ST_Boundary(ST_GeomFromText('POLYGON((3 3,0 0, -3 3, 3 3))'))) |
+--------------------------------------------------------------------------+
| LINESTRING(3 3,0 0,-3 3,3 3)                                             |
+--------------------------------------------------------------------------+

Comments

Comments loading...
Content reproduced on this site is the property of its respective owners, and this content is not reviewed in advance by MariaDB. The views, information and opinions expressed by this content do not necessarily represent those of MariaDB or any other party.