ST_Y — Returns the Y coordinate of a Point.
float ST_Y(
geometry a_point)
;
Return the Y coordinate of the point, or NULL if not available. Input must be a point.
To get the minimum and maximum Y value of geometry coordinates use the functions ST_YMin and ST_YMax. |
This method implements the OGC Simple Features Implementation Specification for SQL 1.1.
This method implements the SQL/MM specification. SQL-MM 3: 6.1.4
This function supports 3d and will not drop the z-index.
SELECT ST_Y(ST_GeomFromEWKT('POINT(1 2 3 4)')); st_y ------ 2 (1 row) SELECT ST_Y(ST_Centroid(ST_GeomFromEWKT('LINESTRING(1 2 3 4, 1 1 1 1)'))); st_y ------ 1.5 (1 row)
ST_Centroid, ST_GeomFromEWKT, ST_M, ST_X, ST_YMax, ST_YMin, ST_Z