POSTGRESQL DATABASE INTERVIEW QUESTIONS

What are the "AND" and "OR" operators used for in PostgreSQL?

Can you explain the difference between "AND" and "OR" operators with an example?

How does the "AND" operator affect the result set of a query in PostgreSQL?

Describe a scenario where using "OR" might return unexpected results in PostgreSQL.

How can you combine "AND" and "OR" operators in a single PostgreSQL query?

Explain how PostgreSQL handles the precedence of "AND" and "OR" operators in a complex query.

How can improper use of "AND" and "OR" operators lead to performance issues in PostgreSQL?

What strategies can be used to optimize queries involving "AND" and "OR" operators in PostgreSQL?

Discuss how using "AND" and "OR" operators together with subqueries can affect query execution in PostgreSQL.

In a PostgreSQL certification exam, you are asked to explain the impact of the "AND" and "OR" operators on query results. How would you answer this?