Topic: Power Pivot

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Week-Based Time Intelligence in DAX

The DAX language provides several Time Intelligence functions that simplify writing calculations such as year-to-date (YTD), year-over-year (YOY) and so on. However, if you have a special calendar structure such as a 4-4-5 weeks’ calendar, you need to write your…  Read more

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Usage of dates argument in a row context

Several Time Intelligence functions in DAX use a <dates> argument, which has a special behavior because it can be expressed by using both a column reference syntax, a table expression or a Boolean expression.  Read more

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Best Practices Using SUMMARIZE and ADDCOLUMNS

Everyone using DAX is probably used to SQL query language. Because of the similarities between the Tabular data modeling and the relational data modeling, there is the expectation that you can perform the same operations as those allowed in SQL.…  Read more

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Order of Evaluation in CALCULATE Parameters

DAX is the new language used by PowerPivot and Analysis Services in Tabular mode and it resembles the syntax of Excel formula and it can be considered a functional language. You do not have iterative statements, but you can run…  Read more

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Optimizing High Cardinality Columns in VertiPaq

VertiPaq is the internal column-based database engine used by PowerPivot and BISM Tabular models. High cardinality columns might be the more expensive parts of a table. If you cannot remove a high cardinality column from a table, by using the…  Read more

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Budget and Other Data at Different Granularities in PowerPivot

PowerPivot and BISM Tabular handle relationships between tables by using a single column that requires to be a unique column in the lookup table. In this article you will see how to handle relationships between tables that have different granularities,…  Read more