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Docs: added version note for rename by regex transformation. (#29735)

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Marcus Andersson
2020-12-10 07:53:52 +01:00
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docs/sources/panels/transformations/types-options.md
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@@ -402,6 +402,8 @@ Conditions that are invalid or incompletely configured are ignored.
## Rename by regex
> **Note:** This transformation is only available in Grafana 7.4+.
Use this transformation to rename parts of the query results using a regular expression and replacement pattern.
You can specify a regular expression, which is only applied to matches, along with a replacement pattern that support back references. For example, let's imagine you're visualizing CPU usage per host and you want to remove the domain name. You could set the regex to `([^\.]+)\..+` and the replacement pattern to `$1`, `web-01.example.com` would become `web-01`.