ST_NUMGEOMETRIES()
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The parent of this page is: Functions for MariaDB Enterprise Server
Topics on this page:
Overview
Returns the number of geometries in the GeometryCollection.
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
EXTERNAL REFERENCES
Additional information on this topic may be found in the MariaDB Public Knowledge Base.