MYSQL DATABASE INTERVIEW QUESTIONS

What is a LEFT JOIN in MySQL?

When would you use a LEFT JOIN instead of an INNER JOIN?

Can you explain the difference between a LEFT JOIN and a RIGHT JOIN?

How does a LEFT JOIN handle rows with no match in the right table?

What are some common use cases for a LEFT JOIN?

Can you describe a scenario where using a LEFT JOIN might be necessary to avoid losing data?

How can you use a LEFT JOIN to find unmatched records in the right table?

How would you optimize a query that involves a LEFT JOIN?

Can you explain the impact of using multiple LEFT JOINs in a query?

During a database certification exam, you are asked to explain a situation where a LEFT JOIN is crucial for data integrity in reporting. What would your response be?