Supporting Advanced Data Access Scenarios in Tabular 1400 Models

In the context of this blog article, advanced data access scenarios refers to situations where data access functions inside M expressions cannot easily be represented through data source definitions in Tabular metadata. These scenarios are predominantly encountered when copying and pasting complex M expressions from an Excel workbook or a Power BI Desktop file into a Tabular 1400 model, or when importing Power BI Desktop files into Azure Analysis Services. Often, these complex M expressions require manual tweaking for processing of the Tabular 1400 model to succeed.

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