MYSQL DATABASE INTERVIEW QUESTIONS

What do the AND and OR operators do in a MySQL query?

Provide an example of using the AND operator in a WHERE clause.

Provide an example of using the OR operator in a WHERE clause.

How can you combine AND and OR operators in a single query? Provide an example.

What is the order of precedence for AND and OR operators in MySQL? How can you override it?

Explain how you can use the AND and OR operators in a JOIN operation. Provide an example.

Discuss the performance implications of using multiple AND and OR conditions in a query.

How can you optimize queries with multiple AND and OR conditions?

Provide an example of a complex query using AND and OR operators with subqueries. Explain the logic behind it.

In a MySQL certification exam, you might encounter a question like: "Write a query to find all customers who have either placed an order in the last year or have a balance greater than 5000, and explain why using AND and OR operators correctly is important in this scenario."