1451. Bulk status update — E-commerce — implementation variant 1

DBMS Published 30 Sept 2026 Updated 01 Oct 2026 1 Views Verified

In a E-commerce application, implement this production problem: Close all expired tasks before a supplied date. The API/service receives user input and must return or modify data safely. Give the SQL solution, explain why it works, and show how the same operation is called from the selected stack.

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Answer & Explanation

4 Answers

Verified

Option A

DELETE FROM the_table;

Additional Explanation

Incorrect: it does not implement the stated business rule and may modify/fetch the wrong rows.

Verified Correct Answer

Option B

UPDATE tasks SET status='expired' WHERE status='pending' AND deadline < :cutoff_date;

Additional Explanation

Use a narrow status/date predicate and inspect the affected count before committing.

Verified

Option C

SELECT * FROM the_table;

Additional Explanation

Incorrect: it does not implement the stated business rule and may modify/fetch the wrong rows.

Verified

Option D

UPDATE the_table SET status='active';

Additional Explanation

Incorrect: it does not implement the stated business rule and may modify/fetch the wrong rows.