August 2019
Intermediate to advanced
768 pages
26h
English
book
Definitive Guide to DAX, The: Business intelligence for Microsoft Power BI, SQL Server Analysis Services, and Excel, 2nd Edition
by Alberto Ferrari, Marco Russo
Content preview from Definitive Guide to DAX, The: Business intelligence for Microsoft Power BI, SQL Server Analysis Services, and Excel, 2nd Edition
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Chapter 3Using basic table functions
In this chapter, you learn the basic table functions available in DAX. Table functions are regular DAX functions that—instead of returning a single value—return a table. Table functions are useful when writing both DAX queries and many advanced calculations that require iterating over tables. The chapter includes several examples of such calculations.
The goal of this chapter is to introduce the notion of table functions, but not to provide a detailed explanation of all the table functions in DAX. A larger number of table functions is included in Chapter 12, “Working with tables,” and in Chapter 13, “Authoring queries.” Here, we explain the role of most common and important table functions in DAX, and how ...
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