カテゴリ：: 地理空間関数

ST_CONTAINS¶

Returns TRUE if a GEOGRAPHY or GEOMETRY object is completely inside another object of the same type.

より厳密には、g2のポイントがg1の外部になく、Bの内部の少なくとも1つのポイントがAの内部にある場合にのみ、オブジェクトg1にはオブジェクトg2が含まれます。この定義には、すぐに明確ではない微妙な点があります。「含む」の意味の詳細については、次元拡張9交差点モデル（DE-9IM）をご参照ください。

Although ST_COVERS and ST_CONTAINS might seem similar, the two functions have subtle differences. For details on the differences between "covers" and "contains", see the Dimensionally Extended 9-Intersection Model (DE-9IM).

注釈

この関数は、入力値として GeometryCollection または FeatureCollection を使用することをサポートしていません。

こちらもご参照ください。: ST_WITHIN 、 ST_COVERS 、 ST_COVEREDBY

構文¶

ST_CONTAINS( <geography_expression_1> , <geography_expression_2> )

ST_CONTAINS( <geometry_expression_1> , <geometry_expression_2> )

引数¶

geography_expression_1: GeometryCollection または FeatureCollection ではない GEOGRAPHY オブジェクト。
geography_expression_2: GeometryCollection または FeatureCollection ではない GEOGRAPHY オブジェクト。
geometry_expression_1: A GEOMETRY object that is not a GeometryCollection or FeatureCollection.
geometry_expression_2: A GEOMETRY object that is not a GeometryCollection or FeatureCollection.

戻り値¶

BOOLEAN

Usage Notes¶

For GEOMETRY objects, the function reports an error if the two input GEOMETRY objects have different SRIDs.

例¶

GEOGRAPHY Examples¶

これは、 ST_CONTAINS 関数の簡単な使用法を示しています。

create table geospatial_table_01 (g1 GEOGRAPHY, g2 GEOGRAPHY);
insert into geospatial_table_01 (g1, g2) values 
    ('POLYGON((0 0, 3 0, 3 3, 0 3, 0 0))', 'POLYGON((1 1, 2 1, 2 2, 1 2, 1 1))');

SELECT ST_CONTAINS(g1, g2) 
    FROM geospatial_table_01;
+---------------------+
| ST_CONTAINS(G1, G2) |
|---------------------|
| True                |
+---------------------+

GEOMETRY Examples¶

The query below shows several examples of using ST_CONTAINS. Note how ST_CONTAINS determines that:

The Polygon contains itself.

The Polygon does not contain the LineString that is on its border.

SELECT ST_CONTAINS(poly, poly_inside),
      ST_CONTAINS(poly, poly),
      ST_CONTAINS(poly, line_on_boundary),
      ST_CONTAINS(poly, line_inside)
  FROM (SELECT
    TO_GEOMETRY('POLYGON((-2 0, 0 2, 2 0, -2 0))') AS poly,
    TO_GEOMETRY('POLYGON((-1 0, 0 1, 1 0, -1 0))') AS poly_inside,
    TO_GEOMETRY('LINESTRING(-1 1, 0 2, 1 1)') AS line_on_boundary,
    TO_GEOMETRY('LINESTRING(-2 0, 0 0, 0 1)') AS line_inside);

+--------------------------------+------------------------+------------------------------------+-------------------------------+
| ST_CONTAINS(POLY, POLY_INSIDE) | ST_CONTAINS(POLY,POLY) | ST_CONTAINS(POLY,LINE_ON_BOUNDARY) | ST_CONTAINS(POLY,LINE_INSIDE) |
|--------------------------------+------------------------+------------------------------------+-------------------------------|
| True                           | True                   | False                              | True                          |
+--------------------------------+------------------------+------------------------------------+-------------------------------+