Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026. We will start enforcing it in phases. For more information on the details of Python end of life and migration options, see the [ blog post ](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/) that was published on June 30, 2025. 

# ST\_Contains
<a name="ST_Contains-function"></a>

ST\_Contains returns true if the 2D projection of the first input geometry contains the 2D projection of the second input geometry. Geometry `A` contains geometry `B` if every point in `B` is a point in `A`, and their interiors have nonempty intersection. 

ST\_Contains(`A`, `B`) is equivalent to ST\_Within(`B`, `A`). 

## Syntax
<a name="ST_Contains-function-syntax"></a>

```
ST_Contains(geom1, geom2)
```

## Arguments
<a name="ST_Contains-function-arguments"></a>

 *geom1*   
A value of data type `GEOMETRY` or an expression that evaluates to a `GEOMETRY` type. 

 *geom2*   
A value of data type `GEOMETRY` or an expression that evaluates to a `GEOMETRY` type. This value is compared with *geom1* to determine if it is contained within *geom1*. 

## Return type
<a name="ST_Contains-function-return"></a>

`BOOLEAN`

If *geom1* or *geom2* is null, then null is returned. 

If *geom1* and *geom2* don't have the same value for the spatial reference system identifier (SRID), then an error is returned. 

If *geom1* or *geom2* is a geometry collection, then an error is returned. 

## Examples
<a name="ST_Contains-function-examples"></a>

The following SQL checks if the first polygon contains the second polygon. 

```
SELECT ST_Contains(ST_GeomFromText('POLYGON((0 2,1 1,0 -1,0 2))'), ST_GeomFromText('POLYGON((-1 3,2 1,0 -3,-1 3))'));
```

```
st_contains
-----------
 false
```