Only one change detection measure is allowed per model. Then, back on the page refresh section, you see the information of which measure is being used for change detection and the defined interval for your reference. Once you click apply, a new measure with the change detection icon appears in your field list. That's the interval on how often Power BI will calculate the measure and poll changes. Once you have a measure selected, you must define how often Power BI will Check for changes. For example, you can use count distinct to count customer IDs and only refresh when a new customer is added to the list. When creating a new measure, you can Choose a calculation for the measure between count, count distinct, minimum, maximum, and sum. When selecting an existing measure, you just have to select the desired measure from the fields list or drag and drop it into the Choose existing measure section. Once the window is open, you are presented with the Measure type option where you can select an existing measure or create a new one. Finally, you can right-click or select the dropdown arrow next to any value in the Values well, and select Change detection from the menu. Then click on the Change detection icon on the Page refresh section. You can also access the change detection window from the Modeling tab in the ribbon. When selecting Change detection as your refresh type, you are presented with a link to Add change detection. The actual rate of refresh (usually longer than your selected interval).The minimum interval allowed by your admin (only when logged into your Power BI account).If the feature is enabled by your admin (only when logged into your Power BI account).When clicking on show details, Power BI will provide further information on: If you are the administrator and need to make changes to the refresh interval, visit Configure workloads in a Premium capacity. (The minimum refresh interval is one second.) Your report will begin refreshing at the interval you set. When selecting Auto page refresh as the refresh type, you must provide the desired refresh interval. The inputs needed and information provided will depend on the refresh type selected. To enable automatic page refresh, the toggle needs to be on the "On" position. The Page refresh card will only be available if you are connected to a DirectQuery source. Inputs and information (depending on refresh type).In the Visualizations pane, select the Formatting button (a paint roller) and find the Page refresh section near the bottom of the pane. To use automatic page refresh in Power BI Desktop, select the report page for which you want to enable automatic page refresh. This restriction applies to both automatic page refresh types. Authoring reports with automatic page refresh in Power BI DesktopĪutomatic page refresh is available for DirectQuery sources and some LiveConnect scenarios, so it will only be available when you are connected to a supported data source. LiveConnect sources such as Analysis Services and Power BI datasets are not supported. When publishing to the service, this refresh type is only supported in workspaces that are part of a Premium capacity. Besides defining the measure, you must also select how frequently Power BI Desktop will check for changes. Specifically, this measure polls for changes to your DirectQuery source. This refresh type allows you to refresh visuals on a page based on detecting changes in the data rather than a specific refresh interval. When that specific interval is reached, all visuals in that page send an update query to the data source and update accordingly. This refresh type allows you to update all visuals in a report page based on a constant interval such as one second or five minutes. ![]() When using automatic page refresh, there are two refresh types available: fixed interval and change detection. Furthermore, Automatic Page Refresh supports Proxy Models as well. If you're monitoring signals like social media sentiment, you want to know about sudden changes as soon as they happen.Īutomatic page refresh in Power BI enables your active report page to query for new data, at a predefined cadence, for DirectQuery sources. For example, in the manufacturing industry, you need to know when a machine is malfunctioning or is close to malfunctioning. ![]() When you monitor critical events, you want data to be refreshed as soon as the source data is updated.
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