Documentation

contains() function

contains() tests if an array contains a specified value and returns true or false.

Function type signature
(set: [A], value: A) => bool where A: Nullable

For more information, see Function type signatures.

Parameters

value

(Required) Value to search for.

set

(Required) Array to search.

Examples

Filter on a set of specific fields

fields = ["f1", "f2"]

data
    |> filter(fn: (r) => contains(value: r._field, set: fields))

View example input and output


Was this page helpful?

Thank you for your feedback!


New in InfluxDB 3.6

Key enhancements in InfluxDB 3.6 and the InfluxDB 3 Explorer 1.4.

See the Blog Post

InfluxDB 3.6 is now available for both Core and Enterprise. This release introduces the 1.4 update to InfluxDB 3 Explorer, featuring the beta launch of Ask AI, along with new capabilities for simple startup and expanded functionality in the Processing Engine.

For more information, check out:

InfluxDB Docker latest tag changing to InfluxDB 3 Core

On February 3, 2026, the latest tag for InfluxDB Docker images will point to InfluxDB 3 Core. To avoid unexpected upgrades, use specific version tags in your Docker deployments.

If using Docker to install and run InfluxDB, the latest tag will point to InfluxDB 3 Core. To avoid unexpected upgrades, use specific version tags in your Docker deployments. For example, if using Docker to run InfluxDB v2, replace the latest version tag with a specific version tag in your Docker pull command–for example:

docker pull influxdb:2