Power BI Masterclass - Learning DAX - Table Functions

This video tutorial covers the use of DAX functions in Power BI, focusing on the cross join and add columns functions. It explains how to create calculated tables and demonstrates the practical application of these functions. The tutorial also addresses common data issues and provides solutions for handling them effectively.

What are the two main DAX functions introduced in this video?

• Cross join and add columns

• Join and merge

• Sum and average

• Filter and sort

What does the cross join function create in Power BI?

• A union of two tables

• A Cartesian product

• A filtered table

• A sorted list

In the context of cross join, what is a Cartesian product?

• A combination of all rows from two tables

• A filtered subset of a table

• A merged table with common columns

• A sorted list of unique values

How can you filter out incorrect data entries in Power BI?

• By using the sort function

• By merging tables

• By using the average function

• By applying a filter in the filters pane

What is the purpose of the add columns function?

• To add new columns to a table

• To remove columns from a table

• To merge two tables

• To sort columns in a table

Which function is used to create a unique list of values in a column?

• Values

• Average

• Sum

• Filter

What is a virtual table in the context of DAX expressions?

• A table stored in a database

• A temporary table created within a DAX expression

• A table that is always visible in the report

• A table that cannot be modified

How can you create a new table using DAX expressions in Power BI?

• By using the sort function

• By using the merge function

• By using the add columns function

• By using the new table option under the modeling tab

What is the benefit of using measures instead of default aggregation columns?

• Measures are faster to compute

• Measures provide more flexibility and control

• Measures are easier to understand

• Measures are automatically created

What does the add columns function allow you to do with a table?

• Sort columns alphabetically

• Add new columns with specified expressions

• Merge with another table

• Remove columns