The answer is to first create a date table and then use SUMMARIZECOLUMNS to group by month and count rows. This is correct because SUMMARIZECOLUMNS performs a group-by aggregation over the specified columns—here, 'Date'[Month]—and the COUNTROWS function tallies the number of shipped orders per month, while a dedicated date table ensures proper time intelligence and avoids gaps in the calendar. On the PL-300 exam, this tests your ability to build calculated tables for time-based aggregations, a common task in Power BI data modeling; a frequent trap is choosing GROUPBY, which lacks the implicit auto-exist behavior of SUMMARIZECOLUMNS and can produce incorrect row counts. Remember the memory tip: “Summarize with columns, group by month, count the rows—no gaps, no errors.”
PL-300 Model the data Practice Question
This PL-300 practice question tests your understanding of model 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.
You are creating a Power BI report that uses a table named Orders with columns: OrderID, OrderDate, ShipDate, and Status. You need to create a calculated table that contains one row per month with the total number of orders shipped in that month. Which TWO steps should you take?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a date table using CALENDAR or CALENDARAUTO
The correct answers are A and D. First, create a date table (A) for time intelligence, then use SUMMARIZECOLUMNS (D) to group by month and count orders. Option B (CALENDARAUTO) is a function to create a date table, but the step is incomplete. Option C (VALUES) returns distinct values, not aggregated. Option E (GROUPBY) is similar but less common.
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.
✗
Use CALENDARAUTO in a measure
Why it's wrong here
CALENDARAUTO is for creating a date table, not for a calculated table directly.
✗
Use the GROUPBY function
Why it's wrong here
GROUPBY is an older function; SUMMARIZECOLUMNS is preferred.
✓
Create a date table using CALENDAR or CALENDARAUTO
Why this is correct
A date table is required for time intelligence functions.
Related concept
Read the scenario before looking for a memorised answer.
✓
Use SUMMARIZECOLUMNS with 'Date'[Month] and COUNTROWS of Orders
Why this is correct
SUMMARIZECOLUMNS can group by month and count rows in Orders.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use the VALUES function to get unique months
Why it's wrong here
VALUES returns unique values but does not aggregate counts.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 PL-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Model the data — This question tests Model the data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a date table using CALENDAR or CALENDARAUTO — The correct answers are A and D. First, create a date table (A) for time intelligence, then use SUMMARIZECOLUMNS (D) to group by month and count orders. Option B (CALENDARAUTO) is a function to create a date table, but the step is incomplete. Option C (VALUES) returns distinct values, not aggregated. Option E (GROUPBY) is similar but less common.
What should I do if I get this PL-300 question wrong?
Identify which PL-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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 →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.