Memory 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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Import Data from Tabular Model in Excel Using a DAX Query
When you use Excel to connect to a Tabular database in Analysis Services, you get a PivotTable as a result. In this article, you learn how to import data in a table writing a DAX query than runs on...
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Week-Based Time Intelligence in DAX
The DAX language provides several Time Intelligence functions that simplify writing calculations such as year-to-date (YTD), year-over-year (YOY) and so on. However, if you have special calendar...
View ArticleChecklist for Memory Optimizations in PowerPivot and Tabular Models
This article contains a short checklist of what you have to do in order to optimize the memory used by a data model in PowerPivot or in Analysis Services Tabular, including links to tools and resources...
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Grouping Transactions by Age of Customers in DAX
Grouping transactions by customers’ age requires a computation made row by row at transaction level. DAX offers an elegant solution using calculated columns, which is described in this article. This...
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Organizing Measures and Attributes in Folders with Tabular
When you create a Tabular model in Microsoft SQL Server Analysis Services (SSAS), you have to define all of the measures that the user will be able to use. All the measures defined in the measure grid...
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Inventory in Power Pivot and DAX: Snapshot vs. Dynamic Calculation
You can implement the calculation of stock inventory over time in several ways in DAX. The xVelocity technology in Power Pivot and Analysis Services Tabular is so fast that you might considerboth...
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Yearly Customer Historical Sales in DAX
With DAX you can calculate the sales of the first, second and third year of a new customer without any ETL. In this article you see how to implement this calculation with good performance. Consider the...
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Handling Wrong or Missing Dates in Tabular
In the traditional star schema design of a Data Mart, you replace a missing, unknown or wrong date in the fact table with a dummy value in the Date dimension table. In Tabular, handling a Date table...
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USERELATIONSHIP in Calculated Columns
In a Power Pivot or Tabular model that has inactive relationships, you can use the USERELATIONSHIP function to apply an inactive relationship to a particular DAX expression. Its usage is simple in a...
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Semi-Additive Measures in DAX
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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Understanding Circular Dependencies in Tabular and PowerPivot
When you design a data model for Tabular you should pay attention to a though topic, which is that of circular dependencies in formulas. It is very important to learn how to handle circular...
View ArticleExecute DAX queries through OLE DB and ADOMD.NET
If you want to execute a DAX query from your code to a Tabular model, you might think that an OLE DB connection should be the right way to get your data. It works, but if you your code is written in...
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