ST_BUFFER()

Overview

Returns a geometry representing the points that are at the specified distance from the specified geometry.

See also: Functions in 10.6 ES, in 10.5 ES, and in 10.4 ES

EXAMPLES

SELECT SUBSTRING(ST_AsWKT(ST_BUFFER(Point(5, 5), 1)), 1, 72) AS `Buffer substring`;

+--------------------------------------------------------------------------+
| Buffer substring                                                         |
+--------------------------------------------------------------------------+
| POLYGON((5 4,4.950932325672582 4.001204543794827,4.901982859670439 4.004 |
+--------------------------------------------------------------------------+

SET @point = ST_GeomFromText('POINT(1 1)');
SELECT ST_AsText(ST_Buffer(@point, 0));

+---------------------------------+
| ST_AsText(ST_Buffer(@point, 0)) |
+---------------------------------+
| POINT(1 1)                      |
+---------------------------------+

SET @point = ST_GeomFromText('POINT(1 1)');
SELECT ST_AsText(ST_Buffer(@point, -1));

+----------------------------------+
| ST_AsText(ST_Buffer(@point, -1)) |
+----------------------------------+
| GEOMETRYCOLLECTION EMPTY         |
+----------------------------------+

CHANGE HISTORY

Release Series

History

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

EXTERNAL REFERENCES