# `ST_Contains`

## Syntax

`BOOL ST_Contains(GEOMETRY shape1, GEOMETRY shape2)`

## Description

判断几何图形shape1是否完全能够包含几何图形shape2

## Examples

```
mysql> SELECT ST_Contains(ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"), ST_Point(5, 5));
+----------------------------------------------------------------------------------------+
| st_contains(st_polygon('POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))'), st_point(5.0, 5.0)) |
+----------------------------------------------------------------------------------------+
|                                                                                      1 |
+----------------------------------------------------------------------------------------+

mysql> SELECT ST_Contains(ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"), ST_Point(50, 50));
+------------------------------------------------------------------------------------------+
| st_contains(st_polygon('POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))'), st_point(50.0, 50.0)) |
+------------------------------------------------------------------------------------------+
|                                                                                        0 |
+------------------------------------------------------------------------------------------+
```