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After many years of helping several companies around the world creating small and large data models using SQL Server Analysis Services Tabular, I’ve seen a common performance issue that is underestimated at design time. The VertiPaq engine in SSAS Tabular… Read more
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The security model of SSAS prevents us to apply security limitations to calculated members. We can hide physical members but we have no means to hide calculated members to any role. By preventing access to the physical measures, the user… Read more
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The new video course to create enterprise-level solutions with Power BI and Analysis Services is available! Read more
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The summer is almost over and while we are working on new content (books and other), I already have the plans for this Autumn’s conferences. Microsoft Ignite 2016 – September 26-30, Atlanta, GA See what’s new in SQL Server Analysis… Read more
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Are you working with SSAS Tabular? Are you an experienced PowerPivot user? In both cases, you should be aware that there is only one skill that is important for PowerPivot and SSAS Tabular, and it is the DAX language. I… Read more
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I will be in London to teach the Advanced DAX Workshop on June 11-13, 2014 (if you are interested, there are still seats available). During my stay, I will also deliver an evening community session titles SSAS Tabular from the Trenches… Read more
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Having read this question on the mdsn blogs, I investigated on the KEEPFILTERS function and, after having learned it, it is now time to write about it. Moreover, before start to write about it, I need to thank the dev team… Read more
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Applying security roles to a Power BI model or to an SSAS Tabular database might impact query performance. This article describes existing issues and possible workarounds. This is an advanced article, a good knowledge of storage engine and formula engine… Read more
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This article describes a few query limits existing in DirectQuery for both Power BI and Analysis Services Tabular 2016, explaining when you can modify them. Read more
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This article describes how to implement non-visual-totals with security roles in Power BI and Analysis Services Tabular, which by default show only visual totals of measures in the model. Read more