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The blank value in DAX is a special value requiring particular attention in comparisons. It is not like the special null value in SQL, and it could appear in any conversion from a table expression. This article explores in details… Read more
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This article provides the best practice to use ADDCOLUMNS and SUMMARIZE, two functions that can be used in any DAX expression, including measures. Read more
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This article describes how Power BI uses the Group By Columns attribute of a column and how you can leverage it in specific scenarios. Read more
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Learn how to use the new DAX window functions (INDEX, OFFSET, and WINDOW) to manipulate tables by sorting and partitioning data. Read more
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This article compares two common techniques to filter time periods in DAX: calculation groups and many-to-many relationships. Read more
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After the SQLBI+ launch in November 2022, we released the first update with additional content: two sessions about Time Intelligence and one whitepaper about the new DAX window functions. This is much more than the single Time Intelligence session we… Read more
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If you create server aliases for SQL Server connections, you should be aware of the changes introduced in SQL Server 2022. At SQLBI we use aliases to identify the server’s name in the connection of our sample files (Power BI… Read more
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This article describes different techniques to debug a DAX measure that returns an incorrect result, with and without external tools. Read more
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Here we are, at the end of another year, to see what happened in the DAX world. Read more
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There are cases where the dictionary size reported by VertiPaq Analyzer (used by DAX Studio, Bravo for Power BI, and Tabular Editor 3) does not correspond to the actual memory required by the dictionary. However, the number reported is technically… Read more