Topic: DAX

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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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Clever Hierarchy Handling in DAX

Hierarchy handling in DAX is not very easy, due to the fact that hierarchies, unlike it was in MDX, are not first-class citizens in the DAX world. While hierarchies can be easily defined in the data model, there are no…  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

From SQL to DAX –

From SQL to DAX: String Comparison

In DAX string comparison requires you more attention than in SQL, for several reasons: DAX doesn’t offer the same set of features you have in SQL, a few text comparison functions in DAX are only case-sensitive and others only case-insensitive,…  Read more

From SQL to DAX –

From SQL to DAX: Projection

Using DAX as a query language you will lack a fundamental feature like projection. In fact, DAX allows you add columns to an existing table, but you cannot simply remove some column from a table. In order to do that,…  Read more