ST_MinZ

Definición

ST_MinZ toma una geometría como un parámetro de entrada y devuelve la coordenada z mínima.

Sintaxis

sde.st_minz (g1 sde.st_geometry)

Tipo de devolución

Número

Ejemplo

Oracle

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 

PostgreSQL

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