High cardinality ssas tabular

high cardinality ssas tabular

The basic idea is to avoid having high cardinality columns in an SSAS tabular model database. The reasons are. 1. It takes a long time to.
SQL Server Analysis Services (SSAS) Tabular is a popular choice as it can be much more or less depending on the cardinality of your data).
The slow MDX happens when there is a high cardinality column in the rows and selection is done on joined tables. DAX performs well; MDX  SSAS Tabular Model - DB compression is not optimized. - MSDN.

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Without going into more detail on why datasets are not an adequate replacement for models, the simple fact is that datasets do not optimize the MDX at run-time. I am trying to involve someone more familiar with this topic for a further look at this issue. Contact us for a consultation. Sample workbook with Power Query: gundemonline.org. As you can see you can still mimic most kind of aggregation even if the [Value]-column is split up. How this impacts performance when bringing these together at runtime using the DATEADD function is a matter for you to test!. high cardinality ssas tabular

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I suggest you can use the trace profiler to capture the performance log when the MDX query is running. My hunch is that the performance impact is caused by the high degree cardinality of the concatenated HistoryDateAcctID and PreviousHistoryDateAcctID columns that I created so that I could dynamically get the previous month's status for each account. Analysis Services , Microsoft BI. TranAmountFraction: The Fraction part of TranAmount. I raised it during the TAP..
How to install SQL Server 2012 on Windows Server 2008 R2 Splitting Data — the practice. Getting Started with Data and Analytics in the Cloud. Year-over-year comparison using the same number of days in dax. It will be not quick, but I will try. For example, in SQL Server you might have a EventLog DATETIME column extracted in this way:. Ensure a Successful Data Lake Implementation through Organization.