ST_Within

定義

ST_Within は、最初の ST_Geometry オブジェクトが 2 番目のオブジェクトの中に完全に入っている場合は 1（Oracle および SQLite）または t（PostgreSQL）、それ以外の場合は 0（Oracle および SQLite）または f（PostgreSQL）を返します。

構文

Oracle および PostgreSQL

sde.st_within (geometry1 sde.st_geometry, geometry2 sde.st_geometry)

SQLite

st_within (geometry1 geometryblob, geometry2 geometryblob)

戻り値のタイプ

Boolean

例

以下の例では、zones と squares という 2 つのテーブルが作成されます。SELECT ステートメントにより、交差しているが、1 つの区画内に完全には含まれないすべての四角形が検索されます。

Oracle

CREATE TABLE squares (
 id integer,
 shape sde.st_geometry);
CREATE TABLE zones (
 id integer,
 shape sde.st_geometry);
INSERT INTO squares (id, shape) VALUES (
 1,
 sde.st_polygon ('polygon ((0 0, 0 10, 10 10, 10 0, 0 0))', 4326)
);
INSERT INTO squares (id, shape) VALUES (
 2,
 sde.st_polygon ('polygon ((20 0, 20 10, 30 10, 30 0, 20 0))', 4326)
);
INSERT INTO squares (id, shape) VALUES (
 3,
 sde.st_polygon ('polygon ((40 0, 40 10, 50 10, 50 0, 40 0))', 4326)
);
INSERT INTO zones (id, shape) VALUES (
 1,
 sde.st_polygon ('polygon ((-1 -1, -1 11, 11 11, 11 -1, -1 -1))', 4326)
);
INSERT INTO zones (id, shape) VALUES (
 2,
 sde.st_polygon ('polygon ((19 -1, 19 11, 29 9, 31 -1, 19 -1))', 4326)
);
INSERT INTO zones (id, shape) VALUES (
 3,
 sde.st_polygon ('polygon ((39 -1, 39 11, 51 11, 51 -1, 39 -1))', 4326)
);

SELECT s.id sq_id
 FROM SQUARES s, ZONES z
 WHERE sde.st_intersects (s.shape, z.shape) = 1 
 AND sde.st_within (s.shape, z.shape) = 0;
SQ_ID
2

PostgreSQL

CREATE TABLE squares (
 id integer,
 shape sde.st_geometry);
CREATE TABLE zones (
 id integer,
 shape sde.st_geometry);
INSERT INTO squares (id, shape) VALUES (
 1,
 sde.st_polygon ('polygon ((0 0, 0 10, 10 10, 10 0, 0 0))', 4326)
);
INSERT INTO squares (id, shape) VALUES (
 2,
 sde.st_polygon ('polygon ((20 0, 20 10, 30 10, 30 0, 20 0))', 4326)
);
INSERT INTO squares (id, shape) VALUES (
 3,
 sde.st_polygon ('polygon ((40 0, 40 10, 50 10, 50 0, 40 0))', 4326)
);
INSERT INTO zones (id, shape) VALUES (
 1,
 sde.st_polygon ('polygon ((-1 -1, -1 11, 11 11, 11 -1, -1 -1))', 4326)
);
INSERT INTO zones (id, shape) VALUES (
 2,
 sde.st_polygon ('polygon ((19 -1, 19 11, 29 9, 31 -1, 19 -1))', 4326)
);
INSERT INTO zones (id, shape) VALUES (
 3,
 sde.st_polygon ('polygon ((39 -1, 39 11, 51 11, 51 -1, 39 -1))', 4326)
);

SELECT s.id
 AS sq_id
 FROM squares s, zones z
 WHERE st_intersects (s.shape, z.shape) = 't' 
 AND st_within (s.shape, z.shape) = 'f';
sq_id
2

SQLite

CREATE TABLE squares (
 id integer
);
SELECT AddGeometryColumn(
 NULL,
 'squares',
 'shape',
 4326,
 'polygon',
 'xy',
 'null'
);
CREATE TABLE zones (
 id integer
);
SELECT AddGeometryColumn(
 NULL,
 'zones',
 'shape',
 4326,
 'polygon',
 'xy',
 'null'
);
INSERT INTO squares (id, shape) VALUES (
 1,
 st_polygon ('polygon ((0 0, 0 10, 10 10, 10 0, 0 0))', 4326)
);
INSERT INTO squares (id, shape) VALUES (
 2,
 st_polygon ('polygon ((20 0, 20 10, 30 10, 30 0, 20 0))', 4326)
);
INSERT INTO squares (id, shape) VALUES (
 3,
 st_polygon ('polygon ((40 0, 40 10, 50 10, 50 0, 40 0))', 4326)
);
INSERT INTO zones (id, shape) VALUES (
 1,
 st_polygon ('polygon ((-1 -1, -1 11, 11 11, 11 -1, -1 -1))', 4326)
);
INSERT INTO zones (id, shape) VALUES (
 2,
 st_polygon ('polygon ((19 -1, 19 11, 29 9, 31 -1, 19 -1))', 4326)
);
INSERT INTO zones (id, shape) VALUES (
 3,
 st_polygon ('polygon ((39 -1, 39 11, 51 11, 51 -1, 39 -1))', 4326)
);

SELECT s.id
 AS "sq_id"
 FROM squares s, zones1 z
 WHERE st_intersects (s.shape, z.shape) = 1 
 AND st_within (s.shape, z.shape) = 0;
sq_id
2