# MI_NumPoints

## Description

Returns the number of points (vertices) in a geometry.

## Syntax

MI_NumPoints ( geometry )

## Argument

`geometry` is an expression that returns a geometry.

## Example

Returns the number of points in the USA.

`select MI_NumPoints([Geometry_Column]) as MI_NumPoints from "/countries" where country in ('USA')`

## Remarks

The value returned is an integer and represents the number of points in a geometry. For polygons, both the starting and ending vertices are counted, even though they occupy the same location. If the input is not a valid geometry, then error is returned.