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articleFrom SQL to DAX: Projection
This article describes projection functions and techniques in DAX, showing the differences between SELECTCOLUMNS, ADDCOLUMNS, and SUMMARIZE. Read more
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I just installed a brand new server (well, a virtual machine) with SharePoint 2010 SP1 and SQL Server 2012 RC0, including PowerPivot and Reporting Services / Power View. The server is joined to the domain I use in our development… Read more
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Both GROUPBY and SUMMARIZE are useful functions to group by columns. However, they differ in both performance and functionalities. Knowing the details lets developers choose the right function for their specific scenario. Read more
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articleFrom SQL to DAX: Filtering Data
The WHERE condition of an SQL statement has two counterparts in DAX: FILTER and CALCULATETABLE. In this article we explore the differences between them, providing a few best practices in their use. Read more
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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 learn more about… Read more
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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 can merge partitions and… Read more
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With the release of Microsoft SQL Server 2016, there are several options to use Analysis Services Tabular. SQL Server Standard: it includes Analysis Services Tabular, and it is available in two licensing models: Server + Client Access License (CAL) and… Read more
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Analysis Services answers to query in MDX, in DAX (by now just for Tabular models) and has a limited capability to answer SQL queries. It is not useful for any development or client tool, but I wanted to write a… Read more
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This article describes how DAX Studio can analyze the SQL queries sent to a relational database by Power BI or Analysis Services Tabular in DirectQuery mode. Read more
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This article describes the reasons why an Excel pivot table may be slow when using the Analyze in Excel feature of Power BI. Read more