ST_BOUNDARY
You are viewing an old version of this article. View
the current version here.
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
No comments
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.
