DAX (Data Analysis Expressions) is a formula expression language and can be used in different BI and visualization tools. DAX is also known as function language, where the complete code is kept inside a function. DAX programming formula contains two data types: Numeric and Other. Numeric includes – integers, currency and decimals, while Other includes: string and binary object.
Subsequent is an example of DAX formula, which uses a function to calculate a column in a table.

DAX function can also include other functions, conditional statements, and value references.

DAX Functions

In Power BI, you’ll use different function types to analyze data, and create new columns and measures. It includes functions from different categories such as −
• Aggregate
• Text
• Date
• Logical
• Counting
• Information
Power BI provides an simple way to see the list of all functions. When you start typing your function with within the formula bar, you’ll see the list of all functions starting with that alphabet.

Aggregate Functions

DAX features a number of aggregate functions.
• MIN
• MAX
• Average
• SUM
• SUMX

Counting Functions

Other counting functions in DAX include −
• DISTINCTCOUNT
• COUNT
• COUNTA
• COUNTROWS
• COUNTBLANK

Logical Functions

Subsequent are the collection of Logical functions −
• AND
• OR
• NOT
• IF
• IFERROR

TEXT Functions

• REPLACE
• SEARCH
• UPPER
• FIXED
• CONCATENATE

DATE Functions

• DATE
• HOUR
• WEEKDAY
• NOW
• EOMONTH

INFORMATION Functions

• ISBLANK
• ISNUMBER
• ISTEXT
• ISNONTEXT
• ISERROR

DAX Calculation Types

In Power BI, you’ll create two primary calculations using DAX −
• Calculated columns
• Calculated measures
When you navigate to the Modeling tab, you’ll see a New Column option at the top of the screen. This also opens the formula bar where you’ll enter DAX formula to perform the calculation. DAX – Data Analysis Expression is a powerful language used in Excel to perform calculations. You’ll also rename the column by changing the Column text withwithin the formula bar.

Withwithin the subsequent example, we have made a new column: Product Code (Product_C), which is derived from the last 3 characters of Prod_Id column. Subsequent is the formula −

Product_C = RIGHT( Sheet1[Prod_Id],3)

To create a calculated measure, navigate to New Measure tab under Modeling. This will add a new object under the Fields tab with the name Measure.

You’ll write DAX formula to calculate the worth of the new measure, as we did for the new calculated column.
So, this brings us to the end of blog. This Tecklearn ‘How to use various DAX functions in Power BI ’ blog helps you with commonly asked questions if you are looking out for a job in Power BI. If you wish to learn Power BI and build a career in Business Intelligence domain, then check out our interactive, Microsoft Power BI Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

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