Documentation

Variables

A variable represents a storage location for a single value. Variables are immutable. Once a variable is given a value, it holds that value for the remainder of its lifetime.

Any Flux type can be assigned to a variable. Use the assignment operator (=) to assign a value to a variable identifier.

var1 = "string value"
var2 = 1234
var3 = {firstname: "John", lastname: "Doe"}

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New in InfluxDB 3.7

Key enhancements in InfluxDB 3.7 and the InfluxDB 3 Explorer 1.5.

See the Blog Post

InfluxDB 3.7 is now available for both Core and Enterprise, landing alongside version 1.5 of the InfluxDB 3 Explorer UI. This release focuses on giving developers faster visibility into what their system is doing with one-click monitoring, a streamlined installation pathway, and broader updates that simplify day-to-day operations.

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