Amazon Redshift will no longer support the creation of new Python UDFs starting November 1, 2025.
If you would like to use Python UDFs, create the UDFs prior to that date.
Existing Python UDFs will continue to function as normal. For more information, see the
blog post
ST_YMax
ST_YMax returns the maximum second coordinate of an input geometry.
Syntax
ST_YMax(geom)
Arguments
- geom
-
A value of data type
GEOMETRYor an expression that evaluates to aGEOMETRYtype.
Return type
DOUBLE PRECISION value of the maximum second coordinate.
If geom is empty, then null is returned.
If geom is null, then null is returned.
Examples
The following SQL returns the largest second coordinate of a linestring.
SELECT ST_YMax(ST_GeomFromText('LINESTRING(77.29 29.07,77.42 29.26,77.27 29.31,77.29 29.07)'));
st_ymax ----------- 29.31
