From 23fe8fcf5ac7082433b8c5ca1f2f4cddd6e727b6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Piotr=20Jamr=C3=B3z?= Date: Fri, 13 Oct 2023 15:32:38 +0200 Subject: [PATCH] Correlations: Add documentation around variable exceptions (#71511) (#76510) --- .../correlations/correlation-configuration/index.md | 2 ++ 1 file changed, 2 insertions(+) diff --git a/docs/sources/administration/correlations/correlation-configuration/index.md b/docs/sources/administration/correlations/correlation-configuration/index.md index 34298a847ef..4c63080b65e 100644 --- a/docs/sources/administration/correlations/correlation-configuration/index.md +++ b/docs/sources/administration/correlations/correlation-configuration/index.md @@ -55,6 +55,8 @@ In addition to mapping field values to shorter variable names, more correlation For more details, please see the example in [Use variables and transformations in a correlation]({{< relref "./use-variables-and-transformations" >}}). +Correlation creates a data link only if all variables have values in the selected data row. [Global variables]({{< relref "/docs/grafana/latest/dashboards/variables/add-template-variables#global-variables" >}}) are exception to this rule and are not required to be filled in from the returned data. These variables are interpolated automatically by data sources. + ### Correlation Transformations Correlations provide a way to extract more variables out of field values. The output of transformations is a set of new variables that can be accessed as any other variable.