ST_IsCollection - Amazon Redshift
SyntaxArgumentsReturn typeExamples
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

ST_IsCollection

ST_IsCollection returns true if the input geometry is one of the following subtypes: GEOMETRYCOLLECTION, MULTIPOINT, MULTILINESTRING, or MULTIPOLYGON.

Syntax

ST_IsCollection(geom)

Arguments

geom

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

Return type

BOOLEAN

If geom is null, then null is returned.

Examples

The following SQL checks if the polygon is a collection. 

SELECT ST_IsCollection(ST_GeomFromText('POLYGON((0 2,1 1,0 -1,0 2))'));

st_iscollection
-----------
 false