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Returns number of points in a LineString
If any other geometry is provided as an argument, an IllegalArgumentException is thrown.Example: SELECT ST_NumPoints(ST_GeomFromWKT('MULTIPOINT ((0 0), (1 1), (0 1), (2 2))'))Output: IllegalArgumentException: Unsupported geometry type: MultiPoint, only LineString geometry is supported.
ST_NumPoints

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Signatures

ST_NumPoints(geom: Geometry)

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Parameters

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geom
Geometry
required
The input geometry.

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Return type

An integer value.

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Example

SELECT ST_NumPoints(ST_GeomFromText('LINESTRING(0 1, 1 0, 2 0)'))

3