Menu
Grafana Cloud
coalesce
coalesce
takes any number of arguments and returns the first one that isn’t null, an empty string, empty list, or an empty object.
It’s useful for obtaining a default value, such as if an environment variable isn’t defined.
If no argument is non-empty or non-zero, the last argument is returned.
Examples
> coalesce("a", "b")
a
> coalesce("", "b")
b
> coalesce(env("DOES_NOT_EXIST"), "c")
c
Was this page helpful?
Related documentation
Related resources from Grafana Labs
Additional helpful documentation, links, and articles:
Video
Getting started with the Grafana LGTM Stack
In this webinar, we’ll demo how to get started using the LGTM Stack: Loki for logs, Grafana for visualization, Tempo for traces, and Mimir for metrics.
Video
Intro to Kubernetes monitoring in Grafana Cloud
In this webinar you’ll learn how Grafana offers developers and SREs a simple and quick-to-value solution for monitoring their Kubernetes infrastructure.
Video
Building advanced Grafana dashboards
In this webinar, we’ll demo how to build and format Grafana dashboards.