Select your cookie preferences

We use essential cookies and similar tools that are necessary to provide our site and services. We use performance cookies to collect anonymous statistics, so we can understand how customers use our site and make improvements. Essential cookies cannot be deactivated, but you can choose “Customize” or “Decline” to decline performance cookies.

If you agree, AWS and approved third parties will also use cookies to provide useful site features, remember your preferences, and display relevant content, including relevant advertising. To accept or decline all non-essential cookies, choose “Accept” or “Decline.” To make more detailed choices, choose “Customize.”

ST_NumGeometries - Amazon Redshift

ST_NumGeometries

ST_NumGeometries returns the number of geometries in an input geometry.

Syntax

ST_NumGeometries(geom)

Arguments

geom

A value of data type GEOMETRY or an expression that evaluates to a GEOMETRY type.

Return type

INTEGER representing the number of geometries in geom.

If geom is null, then null is returned.

If geom is a single empty geometry, then 0 is returned.

If geom is a single nonempty geometry, then 1 is returned.

If geom is a GEOMETRYCOLLECTION or a MULTI subtype, then the number of geometries is returned.

Examples

The following SQL returns the number of geometries in the input multilinestring.

SELECT ST_NumGeometries(ST_GeomFromText('MULTILINESTRING((0 0,1 0,0 5),(3 4,13 26))'));
st_numgeometries ------------- 2
PrivacySite termsCookie preferences
© 2025, Amazon Web Services, Inc. or its affiliates. All rights reserved.