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How to Make DAX Distinct Counts 100x Faster with Exact Match Aggs

My wife says that if I wait long enough, some of my clothing will come back into fashion. In the data analytics world, apparently we have waited long enough because an old Analysis Services Multidimensional concept called aggregations has come back into fashion. You may have seen announcements that Power BI supports its own flavor of aggregations now. This blog post is not about Power BI aggs. However, I’ll explain why we didn’t use them and then I’ll describe the approach we did take.



Tags: performance, aggregation, dax, tabular


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