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/). 

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

DropBBox returns a copy of the input geometry that doesn't support 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="DropBBox-function-syntax"></a>

```
DropBBox(geom)
```

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

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

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

`GEOMETRY`

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

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

The following SQL returns a copy of an input polygon geometry that doesn't support being encoded with a bounding box. 

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

```
 st_astext
----------
 POLYGON((0 0,1 0,0 1,0 0))
```