ORACLE DATABASE INTERVIEW QUESTIONS

What is the purpose of the CASE statement in SQL?

How do you write a simple CASE statement in Oracle?

What is the difference between a simple CASE statement and a searched CASE statement in Oracle?

How can you use the CASE statement in an ORDER BY clause in Oracle?

How do you use the CASE statement to handle NULL values in Oracle?

Can you use aggregate functions within a CASE statement in Oracle? Provide an example?

How do you use nested CASE statements in Oracle?

How do you use the CASE statement in an UPDATE statement in Oracle?

How can you use the CASE statement with joins in Oracle?

Explain a scenario where you need to use a complex CASE statement in a real-world application and how you would implement it in Oracle?