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_X

ST_X returns the first coordinate of an input point.

Syntax

ST_X(point)

Arguments

Return type

DOUBLE PRECISION value of the first coordinate.

If point is null, then null is returned.

If point is the empty point, then null is returned.

If point is not a POINT, then an error is returned.

Examples

The following SQL returns the first coordinate of a point.

SELECT ST_X(ST_Point(1,2));

st_x
-----------
 1.0