MYSQL DATABASE INTERVIEW QUESTIONS

What is the CASE statement in SQL and why is it used?

Can you explain the basic syntax of the CASE statement in MySQL?

How would you use a CASE statement to categorize employees based on their salary into 'High', 'Medium', and 'Low'?

How can you use the CASE statement in conjunction with the ORDER BY clause?

How would you handle NULL values in a column using the CASE statement?

Can you use the CASE statement to create a new column based on multiple conditions in an existing column?

Describe a scenario where a CASE statement might be necessary in a complex SQL query.

How can nested CASE statements be utilized in a query?

Explain the potential performance implications of using the CASE statement in large datasets.

During a database certification exam, you are asked to explain how the CASE statement can be used to handle NULL values in a dataset. What would be your response?