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/). 

# PI function
<a name="r_PI"></a>

The PI function returns the value of pi to 14 decimal places. 

## Syntax
<a name="r_PI-synopsis"></a>

```
PI()
```

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

`DOUBLE PRECISION`

## Examples
<a name="r_PI-examples"></a>

To return the value of pi, use the following example.

```
SELECT PI();

+-------------------+
|        pi         |
+-------------------+
| 3.141592653589793 |
+-------------------+
```