GEOMETRYCOLLECTION()

Overview

Constructs a WKB GeometryCollection. If any argument is not a well-formed WKB representation of a geometry, the return value is NULL.

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

EXAMPLES

CREATE TABLE geomcoll (c1 GEOMETRYCOLLECTION);
INSERT INTO geomcoll VALUES
  (GeometryCollection(Point(1,0),
     LineString(Point(1,2), Point(2,3)),
     MultiLineString(
       LineString(Point(1,1), Point(2,2), Point(3,3)),
       LineString(Point(4,4), Point(5,5)),
       LineString(Point(1,1), Point(2,2), Point(3,3)))));
SELECT ST_AsText(c1) FROM geomcoll;
+-----------------------------------------------------------------------------------------------------------+
| ST_AsText(c1)                                                                                             |
+-----------------------------------------------------------------------------------------------------------+
| GEOMETRYCOLLECTION(POINT(1 0),LINESTRING(1 2,2 3),MULTILINESTRING((1 1,2 2,3 3),(4 4,5 5),(1 1,2 2,3 3))) |
+-----------------------------------------------------------------------------------------------------------+
SELECT ST_IsEmpty(GeometryCollection(Point(1,1),
    LineString(Point(2,2), Point(3,3)))) AS result;
+--------+
| result |
+--------+
|      0 |
+--------+

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