Exists is a conditional operator that checks the existence of rows in a subquery. It returns true if the subquery returns at least one row and false if it returns no rows.
Exists is often used in conjunction with other conditional operators such as WHERE, HAVING, and SELECT.
In this article, we will explore the basics of SQL Exists and show you how to use it in your queries. We will also use some examples and best practices for working with SQL Exists.