Working with relational databases often requires breaking down complex problems into manageable parts. Two powerful tools that help achieve this in SQL are subqueries and Common Table Expressions (CTEs). While they may seem similar at first, they serve different purposes and are best used in different scenarios. This article explores what subqueries and CTEs are, their types, use cases, and how they compare in terms of performance and readability. What is a Subquery? A subquery is a q...