diff --git a/docs/sources/panels/expressions.md b/docs/sources/panels/expressions.md index 8b1c6a48e3d..d39eb6e2742 100644 --- a/docs/sources/panels/expressions.md +++ b/docs/sources/panels/expressions.md @@ -11,9 +11,9 @@ Server-side expressions allow you to manipulate data returned from queries with ## Using expressions -The primary use case for expressions is for the upcoming next version of Grafana alerting. Like alerting, processing is done server-side, so expressions can operate without a browser session. However, expressions can be used with backend data sources and visualization as well. +Expressions are primarily used by the new [Grafana 8 alerts]({{< relref "../alerting/unified-alerting/" >}}). The processing is done server-side, so expressions can operate without a browser session. However, expressions can also be used with backend data sources and visualization. -> **Note:** Expressions do not work with current Grafana alerting. +> **Note:** Expressions do not work with legacy dashboard alerts. > **Note:** Expressions do not work with dashboard variables. @@ -32,7 +32,7 @@ To reference the output of an individual expression or a data source query in an Expressions work with two types of data. - A collection of time series. -- A collection of numbers, where each collection could be a single series or single number. +- A collection of numbers, where each item in the collection is a single number. Each collection is returned from a single data source query or expression and represented by the RefID. Each collection is a set, where each item in the set is uniquely identified by it dimensions which are stored as [labels]({{< relref "../basics/timeseries-dimensions.md#labels" >}}) or key-value pairs.