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Understanding DAX Auto-Exist

Auto-exist is a technology built into DAX with the simple goal of avoiding useless calculations. In other words, it is an optimization technique used by the filtering mechanisms of DAX with the goal of reducing the effort of computing values.

For example, imagine that one builds a report that slices by continent and country. In a database one might have two continents and five countries:

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Tags: dax, tabular

 

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