Which SQL clause is used to filter individual rows before grouping takes place?
Options
- A. HAVING
- B. WHERE
- C. ORDER BY
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
B. WHERE
Detailed Explanation
- WHERE: Filters individual rows before GROUP BY is applied.
- HAVING: Filters groups after grouping.
- Example: SELECT department_id, COUNT(*) FROM employees WHERE salary > 20000 GROUP BY department_id;