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\$1GeometryType
<a name="ST_GeometryType-function"></a>

ST\$1GeometryType returns the subtype of an input geometry as a string. 

For 3DM, 3DZ, and 4D geometry inputs, ST\$1GeometryType returns the same result as for 2D geometry inputs.

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

```
ST_GeometryType(geom)
```

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

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

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

`VARCHAR` representing the subtype of *geom*. 

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

The values returned are as follows.


| Returned string value | Geometry subtype | 
| --- | --- | 
| `ST_Point` | Returned if *geom* is a `POINT` subtype  | 
| `ST_LineString` | Returned if *geom* is a `LINESTRING` subtype  | 
| `ST_Polygon` | Returned if *geom* is a `POLYGON` subtype  | 
| `ST_MultiPoint` | Returned if *geom* is a `MULTIPOINT` subtype  | 
| `ST_MultiLineString` | Returned if *geom* is a `MULTILINESTRING` subtype  | 
| `ST_MultiPolygon` | Returned if *geom* is a `MULTIPOLYGON` subtype  | 
| `ST_GeometryCollection` | Returned if *geom* is a `GEOMETRYCOLLECTION` subtype  | 

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

The following SQL returns the subtype of the input linestring geometry. 

```
SELECT ST_GeometryType(ST_GeomFromText('LINESTRING(77.29 29.07,77.42 29.26,77.27 29.31,77.29 29.07)'));
```

```
st_geometrytype
-------------
 ST_LineString
```