## `PI` [esql-pi]

**Syntax**

:::{image} ../../../../../images/pi.svg
:alt: Embedded
:class: text-center
:::

**Parameters**

**Description**

Returns [Pi](https://en.wikipedia.org/wiki/Pi), the ratio of a circle’s circumference to its diameter.

**Supported types**

| result |
| --- |
| double |

**Example**

```esql
ROW PI()
```

| PI():double |
| --- |
| 3.141592653589793 |