DA0-002 Data Acquisition and Preparation Practice Question
A dataset contains sales transactions with columns 'order_date', 'amount', and 'region'. The analyst wants to calculate the total sales per region for orders placed in 2023, but only include regions where total sales exceed $10,000. Which SQL clause should be used to filter the aggregated results?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
HAVING
The HAVING clause filters groups after aggregation, whereas WHERE filters rows before grouping.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
HAVING
Why this is correct
HAVING filters aggregated results after GROUP BY.
- ✗
WHERE
Why it's wrong here
WHERE filters rows before aggregation, not after.
- ✗
GROUP BY
Why it's wrong here
GROUP BY defines the groups, but does not filter them.
- ✗
FILTER
Why it's wrong here
FILTER is used in some databases for aggregate functions, but not standard for post-aggregation filtering.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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