The answer is using Power Query with List.Dates or DAX with CALENDAR or CALENDARAUTO. Both methods are valid because they generate a continuous, single-column range of dates that can be marked as a date table, which is essential for time intelligence functions like TOTALYTD or SAMEPERIODLASTYEAR. On the Microsoft Power BI Data Analyst PL-300 exam, this topic tests your understanding of how to properly create a date table to satisfy the model’s star schema requirements, often appearing in scenario-based questions where you must choose between DAX and Power Query approaches. A common trap is forgetting that CALENDARAUTO scans all date columns in the model, so if your data spans unexpected years, it can produce an overly wide range, whereas List.Dates gives you explicit control in the M language. To remember the distinction: think of DAX as the “auto-pilot” for quick setup and Power Query as the “manual stick” for precise range control.
PL-300 Prepare the data Practice Question
This PL-300 practice question tests your understanding of prepare the data. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are valid ways to create a date table in Power BI?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Using DAX function CALENDAR or CALENDARAUTO.
Option D is correct because the DAX functions CALENDAR and CALENDARAUTO are specifically designed to generate a single-column table of dates, which can then be used as a date table. CALENDAR requires explicit start and end dates, while CALENDARAUTO automatically scans the model to determine the date range. Both are standard methods for creating a date table in Power BI.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Using the time intelligence functions like TOTALYTD.
Why it's wrong here
Functions use date tables, do not create them.
✗
Marking an existing table as a date table.
Why it's wrong here
Marks but does not create a date table.
✗
Enabling the auto date/time feature.
Why it's wrong here
Creates hidden date tables, not user-controllable.
✓
Using DAX function CALENDAR or CALENDARAUTO.
Why this is correct
Creates a date table with a range of dates.
Related concept
Read the scenario before looking for a memorised answer.
✓
Using Power Query with List.Dates.
Why this is correct
Generates a list of dates in Power Query.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse time intelligence functions (like TOTALYTD) with table creation functions, or they assume that marking a table as a date table or enabling auto date/time actually creates a new date table, when in fact those options only configure existing data.
Detailed technical explanation
How to think about this question
When using CALENDARAUTO, Power BI scans all date columns in the model to determine the minimum and maximum dates, then generates a contiguous range of dates. This function is useful for dynamic models where the date range may change as data is refreshed. In contrast, List.Dates in Power Query generates a list of dates based on a start value, count, and step, which can be converted into a table; this is often used when you need more control over the date generation process, such as creating fiscal calendars or custom date hierarchies.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Prepare the data — This question tests Prepare the data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Using DAX function CALENDAR or CALENDARAUTO. — Option D is correct because the DAX functions CALENDAR and CALENDARAUTO are specifically designed to generate a single-column table of dates, which can then be used as a date table. CALENDAR requires explicit start and end dates, while CALENDARAUTO automatically scans the model to determine the date range. Both are standard methods for creating a date table in Power BI.
What should I do if I get this PL-300 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. You need to create a date table in Power BI using DAX. Which function should you use to generate a continuous list of dates?
easy
A.CALCULATE.
✓ B.CALENDAR.
C.TODAY.
D.DATEVALUE.
Why B: The CALENDAR function in DAX generates a single-column table of dates that starts from a specified start date and ends at a specified end date, creating a continuous list of all dates in that range. This is the correct function to use when you need to create a date table for time intelligence calculations in Power BI.
Last reviewed: Jun 24, 2026
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This PL-300 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PL-300 exam.
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