In the realm of databases, understanding the distinction between primary keys and foreign keys is crucial for establishing meaningful relationships between tables. A primary key, singularly identifies each record in a table, ensuring that no two records have the same identifier. Conversely, a foreign key acts as a bridge between tables, referencing

GROUP BY is a powerful SQL clause used to aggregate data based on common values. It allows you to explore your dataset by grouping rows with matching characteristics together. This technique is indispensable for uncovering valuable insights from your database. Let's explore some SQL examples to illustrate how GROUP BY can be used to execute data a