ST_NUMINTERIORRINGS()

Overview

Returns an integer containing the number of interior rings in the Polygon value.

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

EXAMPLES

SET @polygon ='Polygon((0 0,0 5,5 5,5 0,0 0),(2 2,2 5,5 5,5 2,2 2))';
SELECT ST_NumInteriorRings(ST_GeomFromText(@polygon));

+------------------------------------------------+
| ST_NumInteriorRings(ST_GeomFromText(@polygon)) |
+------------------------------------------------+
|                                              1 |
+------------------------------------------------+

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