Topic: Power Pivot

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blog post –

Why data modeling is important in #powerbi

I have a long experience in working on reporting systems based on semantic models. Now we call them “self-service BI”, but the principles are the same we had in DSS (decision support system), OLAP (on-line analytical processing), and many other…  Read more

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Using KEEPFILTERS in DAX

This article explains how to use KEEPFILTERS to intersect instead of overriding an existing filter context in DAX, simplifying the code and improving performance.  Read more

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Start learning DAX for free

SQLBI offers a new introductory DAX video course called Introducing DAX. This article describes which users will benefit more from this learning experience, and how to enroll in the course.  Read more

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Duplicated names in DAX

This article describes how DAX resolves column and measure names in DAX, providing best practices to avoid conflicting names.  Read more

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Lookup multiple values in DAX

This article describes different techniques to retrieve multiple values from a lookup table in DAX, improving code readability and performance.  Read more

blog post –

Unexpected side effects of table filters in #dax

One of the side effects that you might not expect from a table filter in a CALCULATE statement is the removal of an existing filter. In reality, this is a condition that happens when you write an explicit CALCULATE in a row context, because the table  Read more

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Context Transition and Expanded Tables

This article describes how table expansion and filter context propagation are important DAX concepts to understand and fix small glitches in DAX expressions.  Read more