Quick Answer
The answer is the WHERE clause, which is the correct SQL clause for filtering records in data extraction. In SQL, the WHERE clause applies a condition directly to rows in a table before any grouping or ordering occurs, so writing WHERE amount > 100 will retrieve only those sales records where the amount exceeds 100. On the CompTIA Data+ DA0-001 exam, this concept tests your understanding of fundamental data filtering, often appearing in scenario-based questions where you must choose between WHERE, HAVING, or ON clauses. A common trap is confusing WHERE with HAVING: remember that WHERE filters individual rows before aggregation, while HAVING filters groups after aggregation. For a quick memory tip, think “WHERE works on raw rows, HAVING works on grouped rows.”
This DA0-001 practice question tests your understanding of mining and acquiring 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.
A data analyst is using SQL to extract data. The analyst wants to retrieve all records from a table named 'sales' where the 'amount' column is greater than 100. Which SQL clause should be used?
WHERE
WHERE clause filters rows based on a condition.
ORDER BY
Why wrong: ORDER BY is for sorting, not filtering.
GROUP BY
Why wrong: GROUP BY is for grouping rows.
HAVING
Why wrong: HAVING filters groups, not individual rows.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
WHERE
The WHERE clause in SQL is used to filter records based on a specified condition, such as 'amount > 100'. It is applied directly to the rows in the 'sales' table before any grouping or ordering, making it the correct choice for retrieving only records where the amount exceeds 100.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
WHERE
Why this is correct
WHERE clause filters rows based on a condition.
Related concept
Read the scenario before looking for a memorised answer.
ORDER BY
Why it's wrong here
ORDER BY is for sorting, not filtering.
GROUP BY
Why it's wrong here
GROUP BY is for grouping rows.
HAVING
Why it's wrong here
HAVING filters groups, not individual rows.
Common exam traps
The trap here is that candidates often confuse HAVING with WHERE, thinking both can filter rows, but HAVING is only valid after GROUP BY and for aggregate conditions, while WHERE filters individual rows before any grouping.
Detailed technical explanation
The WHERE clause operates at the row level, evaluating the condition for each row in the table before any aggregation or sorting occurs. In SQL execution order, WHERE is processed after FROM and JOIN but before GROUP BY, HAVING, and ORDER BY, which is why it cannot reference aggregate functions. A real-world scenario is filtering sales transactions for a specific threshold, where using HAVING instead of WHERE would require a GROUP BY and could cause performance issues or incorrect results.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the DA0-001 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Mining and Acquiring Data — This question tests Mining and Acquiring Data — Read the scenario before looking for a memorised answer..
The correct answer is: WHERE — The WHERE clause in SQL is used to filter records based on a specified condition, such as 'amount > 100'. It is applied directly to the rows in the 'sales' table before any grouping or ordering, making it the correct choice for retrieving only records where the amount exceeds 100.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This DA0-001 practice question is part of Courseiva's free CompTIA 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 DA0-001 exam.
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