Understanding the direction of a relationship DAX for Excel users Cells versus tables Excel and DAX: Two functional languages Iterators in DAX DAX requires theory DAX for SQL developers Relationship handling DAX is a functional language DAX as a programming and querying language Subqueries and condition...
most new DAX developers find context transition hard to understand, and they consider it to be the major reason behind incorrect results. There are two reasons for developers to feel this way:
performance in aggregations · Optimize data models to achieve better compression · Measure...DAX query performance with DAX Studio and learn how to optimize your DAX 完整目录以下凭记忆大致标记了第二版新增的内容。...DAX DAX requires theory DAX for SQL developers Relationship handling DAX is a fu...
While Excel is a powerful tool for data analysis, the built-in functions can feel limiting at times. When you work with complex calculations orlarge datasets, or perhaps want to create more insightful reports, explore the world of Data Analysis Expressions (DAX) to get the job done in no t...
Developers have the option of creating their filter context too, by leveraging CALCULATE. For example, to compute the value of Sales Amount for only the customers living in Europe, you can use the following expression: Measure in Sales table 1 2 3 4 5 Europe Sales := CALCULATE ( [Sales ...
at SQLBI we are not wizards. We have been practicing for years. We wanted to understand. We are not alone at all. A whole generation of great DAX developers is rising. We can see this in the increasing quality of blog posts of authors and developers who write elegant and efficient DAX...
Recently I delivered a session at local conference organized by Microsoft Croatia –WinDays¹º. The title of the presentation was: “DAX vs MDX vs T-SQL”. As its name suggests, the presentation is oriented towards SQL and BI developers (for change) instead of Excel power-users and com...
DAX Studio is the premier tool for working with DAX queries against Microsoft Tabular models. The project was started in 2012 and has been constantly developed ever since. It allows users to connect to models running locally in Power Pivot, Power BI Desktop and SQL Server Developer Tools (SSDT...
The reason is not that the language or the tools have changed so drastically. The reason is that over these last few years we – as authors and teachers – have evolved a lot, hopefully for the better. We have taught DAX to thousands of users and developers all around the world, we ha...
The PARTITIONBY function is a way to divide the table into parts. When the MATCHBY function is used in a Window function, the DAX Engine verifies at runtime that the specified MATCHBY columns can serve as unique identifiers for each row in every partition. ...