MYSQL DATABASE INTERVIEW QUESTIONS

What does the NOT IN operator do in a MySQL query?

Can the NOT IN operator be used with numeric values? Provide an example.

How does the NOT IN operator handle NULL values in the list?

Explain how the NOT IN operator can be used with a subquery. Provide an example.

What is the difference between NOT IN and NOT EXISTS? When would you use one over the other?

How can the NOT IN operator be used to improve query readability compared to multiple AND conditions? Provide an example.

Discuss the performance implications of using the NOT IN operator with a large list of values.

How does MySQL optimize queries using the NOT IN operator?

Can the NOT IN operator be used with multiple columns? If so, provide an example and explain the syntax.

A certification exam might ask: "Given a table with columns order_id, product_id, and quantity, write a query using the NOT IN operator to find all orders that do not contain any products from a specified list of product IDs (e.g., 101, 102, 103). Explain the importance of handling NULL values in this scenario."