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\$1GeomFromText
<a name="ST_GeomFromText-function"></a>

ST\$1GeomFromText constructs a geometry object from a well-known text (WKT) representation of an input geometry. 

ST\$1GeomFromText accepts 3DZ, 3DM, and 4D where the geometry type is prefixed with Z, M, or ZM, respectively.

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

```
ST_GeomFromText(wkt_string)
```

```
ST_GeomFromText(wkt_string, srid)
```

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

 *wkt\$1string*   
A value of data type `VARCHAR` that is a WKT representation of a geometry.  
You can use the WKT keyword `EMPTY` to designate an empty point, a multipoint with an empty point, or a geometry collection with an empty point. The following example creates a multipoint with one empty and one nonempty point.   

```
ST_GeomFromEWKT('MULTIPOINT(1 0,EMPTY)');
```

 *srid*   
A value of data type `INTEGER` that is a spatial reference identifier (SRID). If an SRID value is provided, the returned geometry has this SRID value. Otherwise, the SRID value of the returned geometry is set to zero (0).

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

`GEOMETRY`

If *wkt\$1string* or *srid* is null, then null is returned. 

If *srid* is negative, then null is returned. 

If *wkt\$1string* is not valid, then an error is returned. 

If *srid* is not valid, then an error is returned. 

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

The following SQL constructs a geometry object from the WKT representation and SRID value. 

```
SELECT ST_GeomFromText('POLYGON((0 0,0 1,1 1,1 0,0 0))',4326);
```

```
st_geomfromtext
--------------------------------
0103000020E61000000100000005000000000000000000000000000000000000000000000000000000000000000000F03F000000000000F03F000000000000F03F000000000000F03F000000000000000000000000000000000000000000000000
```