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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...
View ArticleOptimizing High Cardinality Columns in VertiPaq
VertiPaq is the internal column-based database engine used by PowerPivot and BISM Tabular models. High cardinality columns might be the more expensive parts of a table. If you cannot remove a high...
View ArticleMemory Settings in Tabular Instances of Analysis Services
Memory settings in Analysis Services might be an important tuning of a correct setup, both for production and developer machines. Analysis Services 2012 can be installed in different ways and the new...
View ArticleIncremental Processing in Tabular Using Process Add
In Analysis Services 2012 you can process a table in a Tabular model by several ways: you can process the whole table, you can split the table in several partitions and process a single partition, you...
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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...
View ArticleOrder 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...
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Optimize Many-to-Many Calculation in DAX with SUMMARIZE and Cross Table...
PowerPivot and Analysis Services 2012 Tabular do not support many-to-many (M2M) relationship directly in the data model. However, you can obtain the desired result from a many-to-many relationship by...
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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 do the...
View ArticleParallelize ProcessAdd with AMO
In this article we see a function to enable parallelism in commands sent to Analysis Services by using the AMO library even when you need to use the change the QueryBinding. This function is useful...
View ArticleRules for DAX Code Formatting
With the modern editors that have automatic code formatting features, each one has its own code formatting style. Usually there are a few “common rules” for code formatting depending on the language,...
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Natural Hierarchies in Power Pivot and Tabular
Creating a hierarchy in a Power Pivot or Tabular data model is very easy, but you might experience performance issues if the hierarchy is not “natural”. This article explains how to create hierarchies...
View ArticleLast Process Date in SSAS Tabular
How do you get the last process date for an SSAS Tabular Database? This article shows the techniques you can use and explains how to interpret the information available. Last Process Date in a...
View ArticleFILTER vs CALCULATETABLE: optimization using cardinality estimation
A common best practice is to use CALCULATETABLE instead of FILTER for performance reason. This article explore the reasons of that and explain when FILTER might be better than CALCULATETABLE. Please...
View ArticleCheck Empty Table Condition with DAX
In DAX there are different ways to test whether a table is empty. This test can be used in complex DAX expressions and this short article briefly discuss what are the suggested approaches from a...
View ArticleUsing Tabular Models in a Large-scale Commercial Solution
Analysis Services Tabular can be used in large-scale solutions and SQLBI already helped several companies in the challenging effort of defining a reliable and scalable architecture, designing the right...
View ArticleSSAS Tabular as Analytical Engine
This article describes pros and cons of using SQL Server Analysis Services Tabular as the analytical engine in a service or application, based on the experience of companies who have adopted it. Many...
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AutoExist and Normalization
The autoexist feature used by MDX queries sent to an Analysis Services or Power Pivot data models can have different behaviors depending on the normalization level. This article describes these...
View ArticleTools for DAX and Tabular Developers
This page contains descriptions and links to necessary tools and resources for DAX and Tabular developers. DAX Studio http://daxstudio.codeplex.com/ DAX Studio is a free tool for running DAX queries...
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Frictionless Renaming in Tabular Models with Analysis Services
The names used for table, columns, and measures in DAX cannot be renamed without breaking existing DAX formulas. This article describes how to leverage translations to decouple user interface from...
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Heap Memory Settings for Analysis Services Tabular 2012 / 2014
The default memory settings for Analysis Services Tabular might be less than optimal. This article describes why this might happen, and guides you choosing the right configuration. A Tabular model in...
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