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Amazon Redshift will no longer support the creation of new Python UDFs starting November 1, 2025. If you would like to use Python UDFs, create the UDFs prior to that date. Existing Python UDFs will continue to function as normal. For more information, see the blog post .

ST_IsEmpty

ST_IsEmpty returns true if the input geometry is empty. A geometry is not empty if it contains at least one nonempty point.

ST_IsEmpty returns true if the input geometry has at least one nonempty point.

Syntax

ST_IsEmpty(geom)

Arguments

Return type

BOOLEAN

If geom is null, then null is returned.

Examples

The following SQL checks if the specified polygon is empty.

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

st_isempty
-----------
 false