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@ -28,7 +28,7 @@ _Ad hoc filters_ allow you to add key/value filters that are automatically added
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## Enter Options
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1. In the **Data source** list, select the target data source. For more information about data sources, refer to [Add a data source]({{< relref "../../features/datasources/add-a-data-source.md" >}}).
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1. In the **Data source** list, select the target data source. For more information about data sources, refer to [Add a data source]({{< relref "../../datasources/add-a-data-source.md" >}}).
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1. Click **Add** to add the variable to the dashboard.
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## Create ad hoc filters
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@ -26,7 +26,7 @@ _Data source_ variables allow you to quickly change the data source for an entir
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## Enter Data source options
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1. In the **Type** list, select the target data source for the variable. For more information about data sources, refer to [Add a data source]({{< relref "../../features/datasources/add-a-data-source.md" >}}).
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1. In the **Type** list, select the target data source for the variable. For more information about data sources, refer to [Add a data source]({{< relref "../../datasources/add-a-data-source.md" >}}).
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1. (optional) In **Instance name filter**, enter a regex filter for which data source instances to choose from in the variable value drop-down list. Leave this field empty to display all instances.
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1. (optional) Enter [Selection Options]({{< relref "../variable-selection-options.md" >}}).
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1. In **Preview of values**, Grafana displays a list of the current variable values. Review them to ensure they match what you expect.
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@ -16,7 +16,7 @@ Query expressions can contain references to other variables and in effect create
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## Query expressions
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Query expressions are different for each data source. For more information, refer to the documentation for your [data source]({{< relref "../../features/datasources/_index.md" >}}).
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Query expressions are different for each data source. For more information, refer to the documentation for your [data source]({{< relref "../../datasources/_index.md" >}}).
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## Enter General options
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@ -32,7 +32,7 @@ Query expressions are different for each data source. For more information, refe
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## Enter Query Options
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1. In the **Data source** list, select the target data source for the query. For more information about data sources, refer to [Add a data source]({{< relref "../../features/datasources/add-a-data-source.md" >}}).
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1. In the **Data source** list, select the target data source for the query. For more information about data sources, refer to [Add a data source]({{< relref "../../datasources/add-a-data-source.md" >}}).
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1. In the **Refresh** list, select when the variable should update options.
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- **Never -** Variables queries are cached and values are not updated. This is fine if the values never change, but problematic if they are dynamic and change a lot.
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- **On Dashboard Load -** Queries the data source every time the dashboard loads. This slows down dashboard loading, because the variable query needs to be completed before dashboard can be initialized.
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