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Power Pivot

ARTICLE

Many-to-many relationships in Power BI and Excel 2016

The new DAX available in Excel 2016 and the data model in Power BI and Analysis Services 2016 offer tools to manage many-to-many relationships in a more efficient way than previous version, as described in this article.

ARTICLE

Choosing Numeric Data Types in DAX

A data model for DAX has three numeric data types: integer, floating point, and fixed decimal number. This article describes them and explains why the fixed decimal number should be used instead of the floating point in most scenarios.

ARTICLE

Data Import Best Practices in Power BI

When you create a data model in Power BI, you should consider how to properly use naming convention and what columns to include, in order to improve usability and performance. This article provides a quick list of best practices valid for both Power BI and Power Pivot.

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Nested grouping using GROUPBY vs SUMMARIZE

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DAX introduced a GROUPBY function that should replace SUMMARIZE in some scenarios. This article describes how to use GROUPBY in nested grouping scenarios and other improvements.

ARTICLE

Create Static Tables in DAX Using the DATATABLE Function

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You can create static tables in DAX using the DATATABLE function. This article describes the syntax of this new feature and shows when and how to use it.

TOOL

Power Pivot Utilities

Power Pivot Utilities in an Excel add-in (based on a collection of VBA macros) that helps documenting PowerPivot models and facilitates the creation of pivot tables connected to the data model.

ARTICLE

Apply AND Logic to Multiple Selection in DAX Slicer

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When you apply a multiple selection to a slicer or to a filter, you obtain a logical OR condition between selected items. This article shows how to implement a logical AND condition in a measure instead of the standard OR one.

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Calculated Columns and Measures in DAX

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One of the first concepts to learn in DAX is the difference between calculated columns and measures. This article shortly recap the differences and describes when to use each one.

ARTICLE

Costs of Relationships in DAX

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The relationships in a data model queried by DAX are a fundamental part of the engine and simplify the query itself. This article examines the cost of relationships in a data model, providing hints to optimize them.

ARTICLE

Data Model Size with VertiPaq Analyzer

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Analyzing table and column size is an important step in optimizing a data model for Power Pivot, Power BI, or Analysis Services Tabular. This article describes VertiPaq Analyzer, an Excel workbook to analyze detailed information extracted from Dynamic Management Views.