ST_BUFFER()
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The parent of this page is: Functions for MariaDB Enterprise Server
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Overview
Returns a geometry representing the points that are at the specified distance from the specified geometry.
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
EXTERNAL REFERENCES
Additional information on this topic may be found in the MariaDB Public Knowledge Base.