ST_NUMGEOMETRIES()

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The parent of this page is: Functions

Topics on this page:

Overview
EXAMPLES
CHANGE HISTORY
EXTERNAL REFERENCES

Overview

Returns the number of geometries in the GeometryCollection.

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

EXAMPLES

SET @gc = 'GeometryCollection(Point(1 0),Point(0 1),Point(1 1))';
SELECT ST_NumGeometries(ST_GeomFromText(@gc));

+----------------------------------------+
| ST_NumGeometries(ST_GeomFromText(@gc)) |
+----------------------------------------+
|                                      3 |
+----------------------------------------+

SET @gc = CONCAT('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_NumGeometries(ST_GeomFromText(@gc));

+----------------------------------------+
| ST_NumGeometries(ST_GeomFromText(@gc)) |
+----------------------------------------+
|                                      3 |
+----------------------------------------+

CHANGE HISTORY

Release Series	History
10.6 Enterprise	Present starting in MariaDB Enterprise Server 10.6.4-1.
10.6 Community	Present starting in MariaDB Community Server 10.6.0.
10.5 Enterprise	Present starting in MariaDB Enterprise Server 10.5.3-1.
10.5 Community	Present starting in MariaDB Community Server 10.5.0.
10.4 Enterprise	Present starting in MariaDB Enterprise Server 10.4.6-1.
10.4 Community	Present starting in MariaDB Community Server 10.4.0.
10.3 Enterprise	Present starting in MariaDB Enterprise Server 10.3.16-1.
10.3 Community	Present starting in MariaDB Community Server 10.3.0.
10.2 Enterprise	Present starting in MariaDB Enterprise Server 10.2.25-1.
10.2 Community	Present starting in MariaDB Community Server 10.2.0.

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

Additional information on this topic may be found in the MariaDB Public Knowledge Base.