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/). 

# SupportsBBox
<a name="SupportsBBox-function"></a>

SupportsBBox returns true if the input geometry supports encoding with a precomputed bounding box. For more information about support for bounding boxes, see [Bounding box](spatial-terminology.md#spatial-terminology-bounding-box).

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

```
SupportsBBox(geom)
```

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

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

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

`BOOLEAN`

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

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

The following SQL returns true because the input point geometry supports being encoded with a bounding box. 

```
SELECT SupportsBBox(AddBBox(ST_GeomFromText('POLYGON((0 0,1 0,0 1,0 0))')));
```

```
supportsbbox
--------------
t
```

The following SQL returns false because the input point geometry doesn't support being encoded with a bounding box. 

```
SELECT SupportsBBox(DropBBox(ST_GeomFromText('POLYGON((0 0,1 0,0 1,0 0))')));
```

```
supportsbbox
--------------
f
```