Postgresql两个Geometry的关系判断

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 )