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\$1GeogFromText
<a name="ST_GeogFromText-function"></a>

ST\$1GeogFromText constructs a geography object from a well-known text (WKT) or extended well-known text (EWKT) representation of an input geography. 

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

```
ST_GeogFromText(wkt_string)
```

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

 *wkt\$1string*   
A value of data type `VARCHAR` that is a WKT or EWKT representation of a geography.

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

`GEOGRAPHY`

If the SRID value is set to the provided value in the input. If SRID is not provided, it is set to `4326`. 

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

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

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

The following SQL constructs a polygon from a geography object with an SRID value. 

```
SELECT ST_AsEWKT(ST_GeogFromText('SRID=4324;POLYGON((0 0,0 1,1 1,10 10,1 0,0 0))'));
```

```
  st_asewkt
------------------------------------------------
 SRID=4324;POLYGON((0 0,0 1,1 1,10 10,1 0,0 0))
```

The following SQL constructs a polygon from a geography object. The SRID value is set to `4326`.

```
SELECT ST_AsEWKT(ST_GeogFromText('POLYGON((0 0,0 1,1 1,10 10,1 0,0 0))'));
```

```
 st_asewkt
------------------------------------------------
 SRID=4326;POLYGON((0 0,0 1,1 1,10 10,1 0,0 0))
```