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Caution

Grafana Alloy is the new name for our distribution of the OTel collector. Grafana Agent has been deprecated and is in Long-Term Support (LTS) through October 31, 2025. Grafana Agent will reach an End-of-Life (EOL) on November 1, 2025. Read more about why we recommend migrating to Grafana Alloy.

Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.

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Open source

join

join all items in an array into a string, using a character as separator.

river 
join(list, separator)

Examples

river 
> join(["foo", "bar", "baz"], "-")
"foo-bar-baz"
> join(["foo", "bar", "baz"], ", ")
"foo, bar, baz"
> join(["foo"], ", ")
"foo"