- 카테고리:
ST_COVEREDBY¶
This returns TRUE if no point in one geospatial object is outside another geospatial object. In other words:
GEOGRAPHY object
g1
is outside GEOGRAPHY objectg2
.GEOMETRY object
g1
is outside GEOMETRY objectg2
.
This is equivalent to ST_COVERS(g2, g1)
.
Although ST_COVEREDBY and ST_WITHIN might seem similar, the two functions have subtle differences. For details on the differences between 《covered by》 and 《within》, see the Dimensionally Extended 9-Intersection Model (DE-9IM).
참고
이 함수는 GeometryCollection 또는 FeatureCollection을 입력 값으로 사용하는 것을 지원하지 않습니다.
구문¶
ST_COVEREDBY( <geography_expression_1> , <geography_expression_2> )
ST_COVEREDBY( <geometry_expression_1> , <geometry_expression_2> )
인자¶
geography_expression_1
GeometryCollection 또는 FeatureCollection이 아닌 GEOGRAPHY 오브젝트입니다.
geography_expression_2
GeometryCollection 또는 FeatureCollection이 아닌 GEOGRAPHY 오브젝트입니다.
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.
반환¶
BOOLEAN.
Usage Notes¶
For GEOMETRY objects, the function reports an error if the two input GEOMETRY objects have different SRIDs.
예¶
GEOGRAPHY Examples¶
이는 ST_COVEREDBY 함수의 간단한 사용법을 보여줍니다.
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_COVEREDBY(g1, g2) FROM geospatial_table_01; +----------------------+ | ST_COVEREDBY(G1, G2) | |----------------------| | False | +----------------------+