2176. Data migration: Copy only completed orders from the current table to an archive table for a date range. — Node.js + Express + mysql2

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

In a data migration module, solve this as a production problem using Node.js + Express + mysql2: Copy only completed orders from the current table to an archive table for a date range. Provide the SQL, explain the logic, show safe application integration, and mention failure/edge cases.

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Answer & Explanation

4 Answers

Verified

Option A

DELETE FROM table_name;

Additional Explanation

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

Verified Correct Answer

Option B

INSERT INTO order_archive (id,customer_id,order_date,total_amount,status) SELECT id,customer_id,order_date,total_amount,status FROM orders WHERE status='completed' AND order_date>=:from_date AND order_date<:to_date;

Additional Explanation

Use a half-open date range so timestamp values are handled correctly.

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

SELECT * FROM table_name;

Additional Explanation

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