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ST_GeometryType - Amazon Redshift
SyntaxArgumentsReturn typeExamples

Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026. We will start enforcing it in phases. For more information on the details of Python end of life and migration options, see the blog post that was published on June 30, 2025.

ST_GeometryType

ST_GeometryType returns the subtype of an input geometry as a string.

For 3DM, 3DZ, and 4D geometry inputs, ST_GeometryType returns the same result as for 2D geometry inputs.

Syntax

ST_GeometryType(geom)

Arguments

geom

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

Return type

VARCHAR representing the subtype of geom.

If geom is null, then null is returned.

The values returned are as follows.

Returned string value Geometry subtype

ST_Point

Returned if geom is a POINT subtype

ST_LineString

Returned if geom is a LINESTRING subtype

ST_Polygon

Returned if geom is a POLYGON subtype

ST_MultiPoint

Returned if geom is a MULTIPOINT subtype

ST_MultiLineString

Returned if geom is a MULTILINESTRING subtype

ST_MultiPolygon

Returned if geom is a MULTIPOLYGON subtype

ST_GeometryCollection

Returned if geom is a GEOMETRYCOLLECTION subtype

Examples

The following SQL returns the subtype of the input linestring geometry. 

SELECT ST_GeometryType(ST_GeomFromText('LINESTRING(77.29 29.07,77.42 29.26,77.27 29.31,77.29 29.07)'));

st_geometrytype
-------------
 ST_LineString