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31 lines
1.1 KiB
Markdown
31 lines
1.1 KiB
Markdown
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title = "Add a query"
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weight = 30
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aliases = ["/docs/sources/panels/query-a-data-source/add-a-query/"]
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# Add a query
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A query returns data that Grafana visualizes in dashboards. When you create a panel, Grafana automatically selects the default data source.
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## Before you begin
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- [Add a data source](../../../datasources/add-a-data-source).
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- Ensure that you know the query language of the data source.
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- [Add a panel]({{< relref "../working-with-panels/add-panel.md" >}}).
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**To add a query**:
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1. Edit the panel to which you are adding a query.
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1. Click the **Query** tab.
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1. Click the **Data source** drop-down menu and select a data source.
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1. Click **Query options** to configure the maximum number of data points returned by the query and how frequently you want the query to request data from the data source.
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For more information about query options, refer to [Reference: Query options]({{< relref "../reference-query-options.md" >}}).
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1. Write the query.
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1. Click **Apply**.
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The system queries the data source and presents the data in the visualization.
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