Hola
Tengo dos tablas con geometría de lineas la tabla forestal_ln con sus
respectivos datos y la tabla mineral_ln con sus datos.
¿Como puedo obtener una tercer tabla con las líneas que se encuentran en la
tabla mineral_ln y no están en la tabla forestal_ln?
Abajo dejo los datos con los cuales estoy trabajando.
Saludos
CREATE TABLE forestal_ln(
id serial NOT NULL,
CONSTRAINT forestal_ln_pkey PRIMARY KEY(id)
);
SELECT AddGeometryColumn ( 'forestal_ln', 'geometria', 22185, 'LINESTRING', 2);
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500030
6500230,5500030 6500050)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500030
6500290,5500030 6500250)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500030
6500050,5500160 6500050)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500050,5500280 6500050)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500090,5500280 6500050)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500090,5500280 6500140)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500150,5500280 6500140)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500150,5500280 6500220)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500190
6500220,5500280 6500220)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500190
6500230,5500100 6500230)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500190
6500220,5500190 6500230)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500100
6500230,5500030 6500230)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500030
6500250,5500120 6500250)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500180
6500250,5500120 6500250)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500180
6500250,5500280 6500250)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500250,5500280 6500270)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500290,5500280 6500270)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500290,5500090 6500290)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500030
6500290,5500090 6500290)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500090
6500290,5500180 6500270)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500180
6500270,5500220 6500270)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500220
6500270,5500120 6500250)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500220
6500270,5500280 6500270)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500100
6500230,5500100 6500170)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500100
6500170,5500030 6500050)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500100
6500170,5500160 6500170)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500170,5500160 6500150)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500150,5500160 6500140)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500140,5500280 6500140)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500140,5500160 6500090)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500090,5500280 6500090)',22185));
INSERT INTO forestal_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500090,5500160 6500050)',22185));
CREATE TABLE mineral_ln(
id serial NOT NULL,
CONSTRAINT mineral_ln_pkey PRIMARY KEY(id)
);
SELECT AddGeometryColumn ( 'mineral_ln', 'geometria', 22185, 'LINESTRING', 2);
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500030
6500230,5500030 6500050)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500030
6500050,5500160 6500050)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500050,5500280 6500050)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500030
6500290,5500030 6500250)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500090,5500280 6500050)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500090,5500280 6500140)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500150,5500280 6500140)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500150,5500280 6500220)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500190
6500220,5500280 6500220)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500190
6500230,5500100 6500230)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500190
6500220,5500190 6500230)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500100
6500230,5500030 6500230)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500030
6500250,5500120 6500250)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500180
6500250,5500120 6500250)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500180
6500250,5500280 6500250)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500250,5500280 6500270)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500290,5500280 6500270)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500280
6500290,5500090 6500290)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500030
6500290,5500090 6500290)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500180
6500250,5500180 6500270)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500180
6500270,5500220 6500270)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500220
6500270,5500280 6500270)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500100
6500230,5500100 6500170)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500100
6500170,5500160 6500170)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500170,5500190 6500170)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500170,5500160 6500150)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500190
6500170,5500190 6500220)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500150,5500160 6500140)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500140,5500280 6500140)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500140,5500160 6500090)',22185));
INSERT INTO mineral_ln (geometria) VALUES(ST_GeomFromText('LINESTRING(5500160
6500090,5500160 6500050)',22185));
Utilizando esta sentencia obtengo los 28 registros que si están contenidos
SELECT mineral_ln.id FROM mineral_ln, forestal_ln WHERE
ST_Contains(mineral_ln.geometria, forestal_ln.geometria);
¿Qué tendría que modificar para obtener los tres registros (id: 20, 25, 27) que
no aparecen en esos 28 si coincidentes?
Saludso
