Creating custom columns in Power BI allows users to generate new fields using formulas, transformations, or conditional logic without altering the original data source. This feature, available in Power Query Editor, is essential for adding calculated values, categorizing data, or combining multiple fields into a single column for better insights.
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Which tab in Power Query Editor contains the “Custom Column” option?
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Question 3 of 15
3. Question
What language is used for writing formulas in Power Query custom columns?
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Question 4 of 15
4. Question
What happens if there is a syntax error in your custom column formula?
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Question 5 of 15
5. Question
Which of the following is NOT a valid use of a custom column?
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Question 6 of 15
6. Question
If you need to create a column that depends on other table relationships, should you use a custom column in Power Query or a calculated column in DAX?
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Question 7 of 15
7. Question
Which function would you use to merge two text columns into one in a custom column?
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Question 8 of 15
8. Question
What should you do if your custom column formula needs to handle null values?
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Question 9 of 15
9. Question
Which is an advantage of creating custom columns in Power Query instead of DAX?
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Question 10 of 15
10. Question
Which is an example of a numeric calculation in a custom column?
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Question 11 of 15
11. Question
What happens if you create a custom column with the same name as an existing column?
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Question 12 of 15
12. Question
Can you reference another custom column while creating a new one?
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Question 13 of 15
13. Question
Which transformation step is automatically added when you create a custom column?
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Question 14 of 15
14. Question
What’s the best approach if your custom column logic is complex and repetitive?
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Question 15 of 15
15. Question
Which of the following can you NOT directly do in a Power Query custom column?
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Summary
These Creating Custom Columns in Power BI MCQs cover how to use Power Query Editor and M language to build new calculated fields for data transformation. Understanding custom columns enables better data modeling, reduces report complexity, and prepares datasets for advanced analytics.
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