Assume that you use SQL Server 2017 Analysis Service (SSAS 2017). TREATAS function Data Analysis Expressions (DAX) query does not work when the columns it uses are not processed. This improvement adds a new feature IsAvailableInMDX that can disable processing for specific columns to make sure that TREATAS function DAX query work in such columns.
Note The performance will be lowered a bit when you run the query with this feature.
This improvement is included in the following cumulative update for SQL Server:
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