ST_UNION
You are viewing an old version of this article. View
the current version here.
Syntax
ST_UNION(g1,g2)
Description
Returns a geometry that is the union of the geometry g1
and geometry g2
.
Examples
SET @g1 = GEOMFROMTEXT('POINT (0 2)'); SET @g2 = GEOMFROMTEXT('POINT (2 0)'); SELECT ASTEXT(ST_UNION(@g1,@g2)); +---------------------------+ | ASTEXT(ST_UNION(@g1,@g2)) | +---------------------------+ | MULTIPOINT(2 0,0 2) | +---------------------------+
SET @g1 = GEOMFROMTEXT('POLYGON((0 0,0 3,3 3,3 0,0 0))'); SET @g2 = GEOMFROMTEXT('POLYGON((2 2,4 2,4 4,2 4,2 2))'); SELECT ASTEXT(ST_UNION(@g1,@g2)); +------------------------------------------------+ | ASTEXT(ST_UNION(@g1,@g2)) | +------------------------------------------------+ | POLYGON((0 0,0 3,2 3,2 4,4 4,4 2,3 2,3 0,0 0)) | +------------------------------------------------+
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.