ORACLE DATABASE INTERVIEW QUESTIONS

What does the IS NULL operator do in SQL?

How do you use the IS NULL operator to filter rows in Oracle?

How do you use the IS NOT NULL operator in Oracle?

How does Oracle treat NULL values in comparison operations?

How do you use the NVL function to handle NULL values in Oracle?

Can you use the IS NULL operator with multiple columns in a single query? Provide an example.

How do you use the COALESCE function to handle multiple NULL values in Oracle?

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

How do you handle NULL values when sorting data using the ORDER BY clause in Oracle?

Explain a scenario where you need to check for NULL values and how you would implement it in Oracle.