What is the purpose of the COALESCE function in Oracle SQL?
How do you use the COALESCE function to provide a default value in Oracle SQL?
Can you use the COALESCE function with more than two arguments in Oracle SQL?
How do you use the COALESCE function to handle NULL values in a query involving multiple columns in Oracle SQL?
How does the COALESCE function differ from the NVL function in Oracle SQL?
How do you use the COALESCE function with date values in Oracle SQL?
How do you use the COALESCE function in an ORDER BY clause in Oracle SQL?
How do you use the COALESCE function in a GROUP BY clause in Oracle SQL?
How do you use the COALESCE function in a JOIN condition in Oracle SQL?
Explain a scenario where you need to use the COALESCE function in a real-world application and how you would implement it in Oracle.