sde.st_minz (g1 sde.st_geometry)

st_minz (g1 st_geometry)

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

INSERT INTO minz_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 minz_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_minz (geometry) MinZ
FROM minz_test;

        ID       MINZ

      1901         20
      1902         31

CREATE TABLE minz_test (id integer, geometry st_geometry);

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

INSERT INTO minz_test VALUES (
1902,
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, st_minz (geometry) AS MinZ
FROM minz_test;

        id       minz

      1901         20
      1902         31