2165. Soft delete: Exclude soft-deleted rows from all normal customer queries. — Node.js + Express + mysql2

DBMS Published 30 Sept 2026 Updated 30 Sept 2026 0 Views Verified

In a soft delete module, solve this as a production problem using Node.js + Express + mysql2: Exclude soft-deleted rows from all normal customer queries. Provide the SQL, explain the logic, show safe application integration, and mention failure/edge cases.

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Answer & Explanation

4 Answers

Verified Correct Answer

Option A

SELECT id,name,email FROM customers WHERE deleted_at IS NULL;

Additional Explanation

Centralize this predicate in ORM scopes/repositories to avoid accidental exposure.

Verified

Option B

SELECT * FROM table_name;

Additional Explanation

Incorrect: it does not satisfy the stated business rule and can return/change unintended data.

Verified

Option C

UPDATE table_name SET status='active';

Additional Explanation

Incorrect: it does not satisfy the stated business rule and can return/change unintended data.

Verified

Option D

DELETE FROM table_name;

Additional Explanation

Incorrect: it does not satisfy the stated business rule and can return/change unintended data.