ST_XMax - Amazon Redshift
SyntaxArgumentsReturn typeExamples
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ST_XMax

ST_XMax returns the maximum first coordinate of an input geometry.

Syntax

ST_XMax(geom)

Arguments

geom

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

Return type

DOUBLE PRECISION value of the maximum first coordinate.

If geom is empty, then null is returned.

If geom is null, then null is returned.

Examples

The following SQL returns the largest first coordinate of a linestring. 

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

st_xmax
-----------
 77.42