elasticsearch/docs/reference/query-languages/esql/_snippets/functions/tau.md

TAU [esql-tau]

Syntax

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

Parameters

Description

Returns the ratio of a circle’s circumference to its radius.

Supported types

result
double

Example

ROW TAU()

TAU():double
6.283185307179586