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Creating Calculation Groups in Power BI Desktop
Something really big is happening! The July 2020 version of Power BI Desktop allows creating calculation groups in Power BI Desktop, thanks to the new “external tools” feature that enables the...
View ArticleCreating calculation groups in Power BI Desktop using Tabular Editor
Learn how to create your first calculation group in Power BI Desktop using Tabular Editor in this step-by-step video.
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Mark as Date table
Tabular models (including Power BI) require marking the Date table as a date table to get appropriate results with time intelligence calculations. This article explains why this setting is required. We...
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Announcing DAX Patterns second edition
Great news! Just one year after releasing the second edition of The Definitive Guide to DAX, we just published a new website, a new book, and a new collection of videos: the second edition of DAX...
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Default calculation item in calculation groups
Power BI offers several options to create filters and slicers in a report. However, it is not possible to define a default filter at the model level so that every new report on a dataset automatically...
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Set functions in DAX: UNION, INTERSECT, and EXCEPT
This article describes the behavior of the DAX functions that manipulate sets; they are useful to create queries and sometimes also to author measures. In this article we refer to “set functions” as...
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KPIs in Tabular models for Power BI and Excel
A Tabular model can define a measure as a Key Performance Indicator (KPI), thus providing a visual indicator for status and trend. This article describes in detail the KPI settings needed to get the...
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Formula engine and storage engine in DAX
This article explains the roles of the formula engine and of the storage engine used to execute DAX queries. A large amount of Power BI users use DAX to write measures and calculated columns. However,...
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Optimizing memory settings in Analysis Services
This article describes the memory configuration in SQL Server Analysis Services and Azure Analysis Services. Modifying these settings may impact performance and memory errors. When you manage instances...
View ArticleImport vs. DirectQuery in Power BI
Should you use Import or DirectQuery data connectivity mode for your Power BI models? Let’s make the right choice by comparing the performance and scalability of the two options!
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New composite models in Power BI: A milestone in Business Intelligence
Power BI sets a new milestone in Business Intelligence: Marco describes the importance of new composite models in an article, and Alberto shows them in action in a video. Microsoft released a new...
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Understanding Circular Dependencies in DAX
This article explains how to avoid circular dependency errors that can occur in DAX when two or more entities (calculated columns or calculated tables) reference one another in such a way that the...
View ArticleA new SQL, a new Analysis Services, a new Workshop! #ssas #sql2012
One week ago Microsoft SQL Server 2012 finally debuted with a virtual launch event and you can find many intro sessions there (20 minutes each). There is a lot of new content available if you want to...
View ArticleUpcoming conference speeches and workshops #ssas #tabular #dax #powerpivot
Between May and July I and Alberto will be speaker at several conferences, and I think it could be useful to write a single blog post with a recap: PASS Business Analytics Conference 2014 – May 7-9,...
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Managing “all” functions in DAX: ALL, ALLSELECTED, ALLNOBLANKROW, ALLEXCEPT
This article provides a complete explanation of the behavior of the ALLxxx functions in DAX. When used as filters in CALCULATE, ALLxxx functions might display unexpected behaviors. Because the topic of...
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Using GENERATE and ROW instead of ADDCOLUMNS in DAX
This article explains how to improve DAX queries using GENERATE and ROW instead of ADDCOLUMNS when you create table expressions. A very popular DAX function to manipulate columns in a table expression...
View ArticleSanta Claus brings presents to #dax, #powerbi, and #ssas #tabular users
If you think that the end of the year would have been a quiet time because the Power BI team will skip their monthly release (but are we sure?), you might be reassured (or disappointed depending on...
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Computing same product sales in DAX
This article shows a technique in DAX to compute the sales volume of products that were available right from the beginning of a selected time period, ignoring products introduced afterwards. UPDATE...
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Semi-Additive Measures in DAX (for Power Pivot)
Values such as inventory and balance account, usually calculated from a snapshot table, require the use of semi-additive measures. In Multidimensional you have specific aggregation types, like...
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Analyzing events with a duration in DAX
This article analyzes how to efficiently work with events that lasts over time, such as the duration of an order considering the distance between order date and ship date. UPDATE 2020-11-10: You can...
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