3447. Audit: Find changes made outside business hours. — Performance

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In a audit module, solve this as a production problem using Performance: Find changes made outside business hours. Provide the SQL, explain the logic, show safe application integration, and mention failure/edge cases.
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Questions & Answers

Answer & Explanation

4 Answers
Verified

Option A

UPDATE table_name SET status='active';
Additional Explanation
Incorrect: it does not satisfy the stated business rule and can return/change unintended data.
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Editorial Answer 1
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Option B

SELECT * FROM table_name;
Additional Explanation
Incorrect: it does not satisfy the stated business rule and can return/change unintended data.
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Editorial Answer 2
Verified

Option C

DELETE FROM table_name;
Additional Explanation
Incorrect: it does not satisfy the stated business rule and can return/change unintended data.
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Editorial Answer 3
Verified Correct Answer

Option D

SELECT * FROM audit_logs WHERE HOUR(created_at)<9 OR HOUR(created_at)>=18;
Additional Explanation
Define business hours and timezone explicitly for production reporting.
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Editorial Answer 4