elasticsearch/docs/reference/query-languages/esql/_snippets/functions/st_x.md

ST_X [esql-st_x]

Syntax

:::{image} ../../../../../images/st_x.svg :alt: Embedded :class: text-center :::

Parameters

point : Expression of type geo_point or cartesian_point. If null, the function returns null.

Description

Extracts the x coordinate from the supplied point. If the points is of type geo_point this is equivalent to extracting the longitude value.

Supported types

point	result
cartesian_point	double
geo_point	double

Example

ROW point = TO_GEOPOINT("POINT(42.97109629958868 14.7552534006536)")
| EVAL x =  ST_X(point), y = ST_Y(point)

point:geo_point	x:double	y:double
POINT(42.97109629958868 14.7552534006536)	42.97109629958868	14.7552534006536