The Ultimate Guide to High Availability with MariaDB

NUMGEOMETRIES

Sintassi

NumGeometries(gc)

Spiegazione

Restituisce il numero di geometrie nella GeometryCollection gc.

Esempio

SET @gc = 'GeometryCollection(Point(1 1),LineString(2 2, 3 3))';

SELECT NUMGEOMETRIES(GeomFromText(@gc));
+----------------------------------+
| NUMGEOMETRIES(GeomFromText(@gc)) |
+----------------------------------+
|                                2 |
+----------------------------------+

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