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  • The ALLSELECTED function under the cover #dax #tabular #powerpivot #powerbi

    I and Alberto Ferrari recently completed the writing of The Definitive Guide to DAX, and we spent months to correctly describe the internals of evaluation context in this language. There are many details that make data model working with both DAX and MDX, and sometime there are behaviors that are not intuitive to understand. A function that seems ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on August 5, 2015
  • DIVIDE vs division operator in #dax

    Alberto Ferrari wrote an interesting article about DIVIDE performance in DAX. This new function has been introduced in SQL Server Analysis Services 2012 SP1, so it is available also in Excel 2013 (which still doesn’t have other features/fixes introduced by following Cumulative Updates…). The idea that instead of writing: IF ( Sales[Quantity] ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on July 24, 2014
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