ST_INTERSECTS

描述

判断两个几何图形是否相交，即存在至少一个公共点（包括边界接触或内部重叠）

备注

从 Apache Doris 3.0.6 开始支持该函数

语法

ST_INTERSECTS( <shape1>, <shape2>)

参数

参数	说明
`<shape1>`	用于判断是否相交的第一个几何图形，支持 Point、Line、Polygon、Circle 等类型。
`<shape2>`	用于判断是否相交的第二个几何图形，支持 Point、Line、Polygon、Circle 等类型。

返回值

返回 1: shape1 图形与图形 shape2 相交

返回 0: shape1 图形与图形 shape2 不相交

ST_INTERSECTS 存在以下边缘情况：

若任一输入参数为 NULL，返回 NULL。
若输入的几何图形无效，返回 NULL。
若输入为空几何图形，返回 NULL。
若两个图形仅边界相切（存在唯一公共点），返回 1（边界接触视为相交）。

举例

点在多边形内部（相交，返回 1）

SELECT ST_Intersects(ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"), ST_Point(5, 5));

+--------------------------------------------------------------------------------------+
| ST_Intersects(ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"), ST_Point(5, 5)) |
+--------------------------------------------------------------------------------------+
|                                                                                    1 |
+--------------------------------------------------------------------------------------+

点在多边形边界上（相交，返回 1）

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Point(0, 5));
+-----------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Point(0, 5)) |
+-----------------------------------------------------------------------------------------+
|                                                                                       1 |
+-----------------------------------------------------------------------------------------+

点在多边形外部（不相交，返回 0）

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Point(50, 50));
+-------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Point(50, 50)) |
+-------------------------------------------------------------------------------------------+
|                                                                                         0 |
+-------------------------------------------------------------------------------------------+

线与线交叉（相交，返回 1）

mysql> SELECT ST_INTERSECTS(  ST_Linefromtext("LINESTRING (0 0, 10 10)"),  ST_Linefromtext("LINESTRING (0 10, 10 0)"));
+----------------------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Linefromtext("LINESTRING (0 0, 10 10)"),  ST_Linefromtext("LINESTRING (0 10, 10 0)")) |
+----------------------------------------------------------------------------------------------------------+
|                                                                                                        1 |
+----------------------------------------------------------------------------------------------------------+

线与线有一个公共点

mysql> SELECT ST_INTERSECTS(  ST_Linefromtext("LINESTRING (0 0, 2 2)"),  ST_Linefromtext("LINESTRING (2 2, 4 0)"));
+------------------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Linefromtext("LINESTRING (0 0, 2 2)"),  ST_Linefromtext("LINESTRING (2 2, 4 0)")) |
+------------------------------------------------------------------------------------------------------+
|                                                                                                    1 |
+------------------------------------------------------------------------------------------------------+

线与线平行且分离（不相交，返回 0）

mysql> SELECT ST_INTERSECTS(  ST_Linefromtext("LINESTRING (0 0, 10 0)"),  ST_Linefromtext("LINESTRING (0 1, 10 1)"));
+--------------------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Linefromtext("LINESTRING (0 0, 10 0)"),  ST_Linefromtext("LINESTRING (0 1, 10 1)")) |
+--------------------------------------------------------------------------------------------------------+
|                                                                                                      0 |
+--------------------------------------------------------------------------------------------------------+

线穿过多边形内部（相交，返回 1）

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Linefromtext("LINESTRING (2 2, 8 8)"));
+-------------------------------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Linefromtext("LINESTRING (2 2, 8 8)")) |
+-------------------------------------------------------------------------------------------------------------------+
|                                                                                                                 1 |
+-------------------------------------------------------------------------------------------------------------------+

线与多边形边界相切（相交，返回 1）

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Linefromtext("LINESTRING (0 5, 5 5)"));
+-------------------------------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Linefromtext("LINESTRING (0 5, 5 5)")) |
+-------------------------------------------------------------------------------------------------------------------+
|                                                                                                                 1 |
+-------------------------------------------------------------------------------------------------------------------+

线完全在多边形外部（不相交，返回 0）

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Linefromtext("LINESTRING (11 1, 11 9)"));
+---------------------------------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Linefromtext("LINESTRING (11 1, 11 9)")) |
+---------------------------------------------------------------------------------------------------------------------+
|                                                                                                                   0 |
+---------------------------------------------------------------------------------------------------------------------+

多边形与多边形重叠（相交，返回 1）

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Polygon("POLYGON ((5 5, 15 5, 15 15, 5 15, 5 5))"));
+--------------------------------------------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Polygon("POLYGON ((5 5, 15 5, 15 15, 5 15, 5 5))")) |
+--------------------------------------------------------------------------------------------------------------------------------+
|                                                                                                                              1 |
+--------------------------------------------------------------------------------------------------------------------------------+

多边形与多边形完全分离（不相交，返回 0）

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Polygon("POLYGON ((20 20, 30 20, 30 30, 20 30, 20 20))"));
+--------------------------------------------------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Polygon("POLYGON ((20 20, 30 20, 30 30, 20 30, 20 20))")) |
+--------------------------------------------------------------------------------------------------------------------------------------+
|                                                                                                                                    0 |
+--------------------------------------------------------------------------------------------------------------------------------------+

多边形与多边形边界接触（相交，返回 1）

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 5 0, 5 5, 0 5, 0 0))"),  ST_Polygon("POLYGON ((5 0, 10 0, 10 5, 5 5, 5 0))"));
+--------------------------------------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 5 0, 5 5, 0 5, 0 0))"),  ST_Polygon("POLYGON ((5 0, 10 0, 10 5, 5 5, 5 0))")) |
+--------------------------------------------------------------------------------------------------------------------------+
|                                                                                                                        1 |
+--------------------------------------------------------------------------------------------------------------------------+

圆与点在内部（相交，返回 1）

mysql> SELECT ST_INTERSECTS(  ST_Circle(0, 0, 1000),  ST_Point(0.005, 0));
+-------------------------------------------------------------+
| ST_INTERSECTS(  ST_Circle(0, 0, 1000),  ST_Point(0.005, 0)) |
+-------------------------------------------------------------+
|                                                           1 |
+-------------------------------------------------------------+

圆与线相切（相交，返回 1）

mysql> SELECT ST_INTERSECTS(  ST_Circle(0, 0, 1000),  ST_Linefromtext("LINESTRING (0.01 0.01, 0.02 0.02)"));
+-----------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Circle(0, 0, 1000),  ST_Linefromtext("LINESTRING (0.01 0.01, 0.02 0.02)")) |
+-----------------------------------------------------------------------------------------------+
|                                                                                             1 |
+-----------------------------------------------------------------------------------------------+

圆与多边形完全分离（不相交，返回 0）

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Circle(20, 5, 5));
+----------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_Circle(20, 5, 5)) |
+----------------------------------------------------------------------------------------------+
|                                                                                            0 |
+----------------------------------------------------------------------------------------------+

圆与多边形相交

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 5 0, 5 5, 0 5, 0 0))"),  ST_Circle(5, 2.5, 2000));
+----------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 5 0, 5 5, 0 5, 0 0))"),  ST_Circle(5, 2.5, 2000)) |
+----------------------------------------------------------------------------------------------+
|                                                                                            1 |
+----------------------------------------------------------------------------------------------+

空几何图形

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_GeometryFromText("POINT EMPTY"));
+-------------------------------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"),  ST_GeometryFromText("POINT EMPTY")) |
+-------------------------------------------------------------------------------------------------------------+
|                                                                                                        NULL |
+-------------------------------------------------------------------------------------------------------------+

无效多边形（返回 NULL）

mysql> SELECT ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 1 1, 0 1, 1 0, 0 0))"),  ST_Point(0.5, 0.5));
+-----------------------------------------------------------------------------------------+
| ST_INTERSECTS(  ST_Polygon("POLYGON ((0 0, 1 1, 0 1, 1 0, 0 0))"),  ST_Point(0.5, 0.5)) |
+-----------------------------------------------------------------------------------------+
|                                                                                    NULL |
+-----------------------------------------------------------------------------------------+

参数为 NULL（返回 NULL）

mysql> SELECT ST_INTERSECTS(NULL, ST_Point(5, 5));
+-------------------------------------+
| ST_INTERSECTS(NULL, ST_Point(5, 5)) |
+-------------------------------------+
|                                NULL |
+-------------------------------------+

描述​

语法​

参数​

返回值​

举例​

描述

语法

参数

返回值

举例