Postgresql 两个Geometry的关系判断

原创
2020/02/11 18:38
阅读数 1.2K

参考文章:postgresql 空间函数集合

关系判断SQL

这里用两个完全一样的Geometry做测试。

/**1.获取两个几何对象间的距离 ST_Distance(geometry, geometry)**/
SELECT  ST_Distance(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**2.如果两个几何对象间距离在给定值范围内,则返回TRUE ST_DWithin(geometry, geometry, float)**/
SELECT  ST_DWithin(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'),10);
/**3.判断两个几何对象是否相等(比如LINESTRING(0 0, 2 2)和LINESTRING(0 0, 1 1, 2 2)是相同的几何对象)ST_Equals(geometry, geometry)**/
SELECT  ST_Equals(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**4.判断两个几何对象是否分离 ST_Disjoint(geometry, geometry)   **/
SELECT  ST_Disjoint(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**5.判断两个几何对象是否相交 ST_Intersects(geometry, geometry)**/
SELECT  ST_Intersects(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**6.判断两个几何对象的边缘是否接触 ST_Touches(geometry, geometry)**/
SELECT  ST_Touches(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**7.判断两个几何对象是否互相穿过 ST_Crosses(geometry, geometry)**/
SELECT  ST_Crosses(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**8.判断A是否被B包含 ST_Within(geometry A, geometry B)**/
SELECT  ST_Within(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**9.判断两个几何对象是否是重叠 ST_Overlaps(geometry, geometry)**/
SELECT  ST_Overlaps(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**10.判断A是否包含B ST_Contains(geometry A, geometry B)**/
SELECT  ST_Contains(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**11.判断A是否覆盖 B ST_Covers(geometry A, geometry B)**/
SELECT  ST_Covers(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**12.判断A是否被B所覆盖 ST_CoveredBy(geometry A, geometry B)**/
SELECT  ST_CoveredBy(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));
/**13.通过DE-9IM 矩阵判断两个几何对象的关系是否成立 ST_Relate(geometry, geometry, intersectionPatternMatrix)**/
SELECT  ST_Relate(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'),'FF*FF****');
/**14.获得两个几何对象的关系(DE-9IM矩阵) ST_Relate(geometry, geometry)**/
SELECT  ST_Relate(ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'), ST_GeomFromText('Polygon((117.357442 30.231278,119.235188 30.231278,119.235188 32.614617,117.357442 32.614617,117.357442 30.231278))'));

查询结果展示

1-10:

11-14

参考文章

ST_Relate(geometry,geometry, intersection_pattern_matrix )

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