ST_YMin

ST_YMin returns the minimum second coordinate of an input geometry.

Syntax

ST_YMin(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 minimum second coordinate.

If geom is empty, then null is returned.

If geom is null, then null is returned.

Examples

The following SQL returns the smallest second coordinate of a linestring.

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

st_ymin
-----------
 29.07