ORACLE DATABASE INTERVIEW QUESTIONS

What is the purpose of the LEFT JOIN clause in SQL?

How do you perform a LEFT JOIN in Oracle?

Can you use LEFT JOIN to find rows in the left table that do not have a match in the right table? Provide an example.

How do you combine the LEFT JOIN clause with other conditions using WHERE in Oracle?

How do you use LEFT JOIN with aggregate functions in Oracle?

How do you handle NULL values in the right table when using LEFT JOIN in Oracle?

How do you perform a LEFT JOIN with multiple tables in Oracle?

How do you use LEFT JOIN with complex conditions involving multiple columns?

How do you optimize queries that use LEFT JOIN in Oracle?

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