You must close and reopen the trace file to see new events. Each visual requires at least one query to the underlying data source. Double-check that the top query is selected. Depending on the cardinality of the column involved, it can lead to performance issues (or query failures due to the 1 million-row limit). Only the following two DirectQuery-enabled sources are available directly in the Power BI service: Even for these two sources, it's still best to start DirectQuery use within Power BI Desktop. It generally improves query performance, though it does depend on the specifics of the relational database source. Applying filters early generally makes those intermediate queries less costly. Do not select any gateway options for your Power BI datasets. For more information about using large models in Power BI, see large datasets in Power BI Premium. If row-level security is defined, these caches aren't shared across users. When hidden, it is not available in the Fields pane and so cannot be used to configure a visual. Bear in mind that the whitepaper describes using DirectQuery in SQL Server Analysis Services. Launch PBD and navigate to File -> Options and Settings -> Preview features. The following data sources send queries to the log: You can read the trace files by using the SQL Server Profiler, part of the free download SQL Server Management Studio. These options apply when you interact with your report in Power BI Desktop, and also apply when users consume the report in the Power BI service. When reviewing the data model for Tailwind Traders, you see that the query connected Power BI Desktop to the source data using DirectQuery. The ability to add custom columns in a direct query depends on the ability for the query to fold. For more information, see DirectQuery and SAP HANA. For relational sources, you can still select a set of tables that define a query that logically returns a set of data. There is no gateway error for DirectQuery to Power BI dataset To solve this error, go to the setting of the dataset. The query results in the following table: action count opened 189096 closed 174914 reopened 2080 As we can see, only a few pull requests have been reopened. Applying the same filter to a table twice, through one of more tables outside of the DirectQuery source, is not supported. In many cases, getting the values for such totals requires sending separate queries to the underlying source. The relational database source can be optimized in several ways, as described in the following bulleted list. These transformations are more limited in DirectQuery. Then, if the measures are sufficiently responsive, you can experiment with more complex measures, but paying attention to the performance for each. The article also describes how to get detailed information to help you optimize reports. However, using DirectQuery is generally only feasible when the underlying data source can provide interactive queries (less than 5 seconds) for the typical aggregate query, and is able to handle the query load that will be generated. Reporting on longer texts results in an error. DirectQuery: Tables are not cached in this instance, and any queries submitted to a Power BI dataset will use the query language for that particular data source to send data from the DirectQuery tables. TopN filters: You can define advanced filters to filter on only the top or bottom N values ranked by some measure.
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