ORACLE DATABASE INTERVIEW QUESTIONS

What is the purpose of the HAVING clause in SQL?

How do you use the HAVING clause in a query with the GROUP BY clause in Oracle?

Can you use the HAVING clause without the GROUP BY clause? Provide an example?

How do you combine the HAVING clause with other conditions using AND and OR?

How does the HAVING clause differ from the WHERE clause in Oracle?

Can you use column aliases in the HAVING clause? Provide an example.

How do you use the HAVING clause with multiple aggregate functions in Oracle?

How do you optimize queries that use the HAVING clause in Oracle?

How do you handle NULL values in the HAVING clause in Oracle?

Explain a scenario where you need to use the HAVING clause in a complex query and how you would implement it in Oracle.