Amazon Redshift will no longer support the creation of new Python UDFs starting Patch 198. Existing Python UDFs will continue to function until June 30, 2026. For more information, 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/). 

# ST\$1IsEmpty
<a name="ST_IsEmpty-function"></a>

ST\$1IsEmpty returns true if the input geometry is empty. A geometry is not empty if it contains at least one nonempty point. 

ST\$1IsEmpty returns true if the input geometry has at least one nonempty point. 

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

```
ST_IsEmpty(geom)
```

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

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

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

`BOOLEAN`

If *geom* is null, then null is returned. 

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

The following SQL checks if the specified polygon is empty. 

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

```
st_isempty
-----------
 false
```