ST_MaxM

Definition

ST_MaxM takes a geometry as an input parameter and returns its maximum m-coordinate.

Syntax

sde.st_maxm (g1 sde.st_geometry)

Return type

Number

If no m values are present, NULL is returned.

Example

Oracle

CREATE TABLE maxm_test (id integer, geometry sde.st_geometry);

INSERT INTO MAXM_TEST VALUES (
1901,
sde.st_polygon ('polygon zm((110 120 20 3, 110 140 22 3, 120 130 26 4, 110 120 20 3))', 0)
);

INSERT INTO MAXM_TEST VALUES (
1902,
sde.st_polygon ('polygon zm((0 0 40 7, 0 4 35 9, 5 4 32 12, 5 0 31 5, 0 0 40 7))', 0)
);

SELECT id, sde.st_maxm (geometry) Max_M
FROM MAXM_TEST;

        ID             MAX_M

      1901                 4
      1902                12

PostgreSQL

CREATE TABLE maxm_test (id integer, geometry sde.st_geometry);

INSERT INTO maxm_test VALUES (
1901,
sde.st_polygon ('polygon zm((110 120 20 3, 110 140 22 3, 120 130 26 4, 110 120 20 3))', 0)
);

INSERT INTO maxm_test VALUES (
1902,
sde.st_polygon ('polygon zm((0 0 40 7, 0 4 35 9, 5 4 32 12, 5 0 31 5, 0 0 40 7))', 0)
);

SELECT id, sde.st_maxm (geometry) 
AS Max_M
FROM maxm_test;

        id             max_m

      1901                 4
      1902                12