ST_NUMINTERIORRINGS()
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The parent of this page is: Functions for MariaDB Enterprise Server
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Overview
Returns an integer containing the number of interior rings in the Polygon value.
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
EXTERNAL REFERENCES
Additional information on this topic may be found in the MariaDB Public Knowledge Base.