MYSQL DATABASE INTERVIEW QUESTIONS

What does the IS NULL operator do in a MySQL query?

Provide an example of using IS NULL to filter records in a table.

What is the difference between IS NULL and = when comparing values in MySQL?

How can you use IS NULL in combination with other conditions in a WHERE clause? Provide an example.

Explain how IS NULL can be used in a JOIN operation to find records without matching entries in another table.

What are the potential pitfalls of using IS NULL with indexed columns?

How can IS NULL be used in a CASE statement to handle NULL values? Provide an example.

Discuss the implications of using IS NULL in subqueries.

How can IS NULL be used in a view to handle NULL values differently? Provide an example.

In a MySQL certification exam, you might encounter a question like: "Write a query to find all orders with either NULL delivery dates or NULL shipping addresses, and explain the importance of handling NULL values correctly."