[Yandex Cloud documentation](../../index.md) > [Yandex DataLens](../index.md) > Calculated fields > Function reference > Mathematical functions > PI

# PI



#### Syntax {#syntax}


```
PI()
```

#### Description {#description}
Returns PI. The accuracy depends on the data source.

**Return type**: `Fractional number`

#### Example {#examples}

```
PI() = 3.14159
```


#### Data source support {#data-source-support}

`ClickHouse 21.8`, `Files`, `Google Sheets`, `Microsoft SQL Server 2017 (14.0)`, `MySQL 5.7`, `Oracle Database 12c (12.1)`, `PostgreSQL 9.3`, `Trino`, `Yandex Documents`, `YDB`.