How do you handle duplicate records in a database?



How do you handle duplicate records in a database?..

Answer / hr@tgksolutions.com

• Use DISTINCT in queries to filter duplicates.
• Use ROW_NUMBER() to identify duplicates:
DELETE FROM Employees
WHERE id NOT IN (
SELECT MIN(id)
FROM Employees
GROUP BY name, email
);
• Implement unique constraints on key fields.

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