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Add docs about global variables in query template variables

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Tobias Skarhed
2018-07-23 15:25:59 +02:00
parent 0fa98a812b
commit 816ee82d26
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docs/sources/features/datasources/prometheus.md
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@@ -75,6 +75,9 @@ Name | Description
For details of *metric names*, *label names* and *label values* are please refer to the [Prometheus documentation](http://prometheus.io/docs/concepts/data_model/#metric-names-and-labels).
It is possible to use some global template variables in Prometheus query template variables; `$__interval`, `$__interval_ms`, `$__range` and `$__range_ms`, where `$__range` is the dashboard's current time range and `$__range_ms` is the current range in milliseconds.
### Using variables in queries
There are two syntaxes: