ST_XMax returns the maximum first coordinate of an input geometry.
Syntax
ST_XMax(geom)
Arguments
- geom
-
A value of data type
GEOMETRYor an expression that evaluates to aGEOMETRYtype.
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
