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• #### Wiki Page: PowerPivot Measures

This article shows you how to create a measure based on data in the Data Analysis Expressions (DAX) sample workbook. The workbook includes bike-related data from the AdventureWorks database. For information about where to get the sample workbook, see Get Sample Data for PowerPivot in the TechNet Library...
• #### Wiki Page: DAX Resource Center

Table of Contents You can contribute! Introduction to DAX Microsoft DAX Documentation Most Valuable Resources Samples DAX formulas in measures DAX functions Credits Welcome to the DAX Resource Center Wiki - your one stop shop for all things DAX This Wiki includes articles, whitepapers, videos...
• #### Wiki Page: PowerPivot: Data Analysis Expressions (DAX) Language

Table of Contents Types of DAX Functions Overview of DAX Where to Use Formulas Creating Formulas by Using the Formula Bar Tips for Using AutoComplete Basic DAX Syntax Using Multiple Functions in a Formula DAX Data Types Formulas and the Relational Model Introduction to Context Updating the Results of...
• #### Wiki Page: PowerPivot: DAX: Text Functions

Data Analysis Expressions (DAX) includes a set of text functions that is based on the library of string functions in Excel, but it has been modified to work with tables and columns. Read more about the following text functions: BLANK CONCATENATE EXACT FIND FIXED FORMAT LEFT...
• #### Wiki Page: PowerPivot: DAX: Operator Reference

The Data Analysis Expressions (DAX) language uses operators to create expressions that compare values, perform arithmetic calculations, or work with strings. Original article (before wiki edits) was written by Jeannine Takaki , Microsoft SQL Server Analysis Services Technical Writer. ...
• #### Wiki Page: PowerPivot: DAX: Filter Functions

The filter and value functions in Data Analysis Expressions (DAX) are some of the most complex and powerful, and differ greatly from Excel functions. The lookup functions work by using tables and relationships, like a database. The filtering functions let you manipulate data context to create dynamic...
• #### Wiki Page: PowerPivot: DAX: Logical Functions

Logical Data Analysis Expressions (DAX) functions act upon an expression to return information about the values or sets in the expression. For example, you can use the IF function to check the result of an expression and create conditional results. Read more about the following logical functions...
• #### Wiki Page: PowerPivot: DAX: Statistical Functions

Data Analysis Expressions (DAX) provides many functions for creating aggregations such as sums, counts, and averages. These functions are very similar to aggregation functions used by Microsoft Excel. Read more about the following statistical functions: AVERAGE AVERAGEA AVERAGEX COUNT...
• #### Wiki Page: PowerPivot: DAX: Date and Time Functions

The Date and Time Functions in Data Analysis Expressions (DAX) are similar to date and time functions in Microsoft Excel. However, DAX functions are based on the datetime data types used by Microsoft SQL Server. DAX also includes a set of time intelligence functions that enable you to manipulate data...
• #### Wiki Page: PowerPivot: DAX: Time Intelligence Functions

Data Analysis Expressions (DAX) includes time intelligence functions to support the needs of Business Intelligence analysis by enabling you to manipulate data using time periods, including days, months, quarters, and years, and then build and compare calculations over those periods. (For community resources...
• #### Wiki Page: PowerPivot: DAX: Math and Trigonometric Functions

The mathematical functions in Data Analysis Expressions (DAX) are very similar to the Excel mathematical and trigonometric functions. Read about the following math and trigonometric functions: ABS CEILING EXP FACT FLOOR INT ISO.CEILING LN LOG LOG10 MROUND PI...
• #### Wiki Page: PowerPivot: DAX: Key Concepts

Basic DAX Syntax A DAX formula is comprised of an equal sign followed by a function or expression. Functions perform operations such as concatenating or adding values, calculating sums or averages, or performing logical tests. Functions usually take some kind of argument , which might be a reference...
• #### Wiki Page: PowerPivot: DAX: Information Functions

A Data Analysis Expressions (DAX) information function looks at the cell or row that is provided as an argument and tells you whether the value matches the expected type. For example, the ISERROR function returns TRUE if the value that you reference contains an error. Read more about the following...
• #### Wiki Page: Context in DAX

Context in DAX formulas enables you to perform dynamic analysis, in which the results of a formula can change to reflect the current row or cell selection and also any related data. Understanding context and using context effectively are critical for building high-performing, dynamic analyses, and for...
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