ST_GeometryType - Amazon Redshift
SyntaxArgumentsReturn typeExamples
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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