Could you tell about cases of using JOIN in your SQL queries on previous projects?

JOIN in SQL is used to combine data from two or more tables based on a related column. In my projects, I often used different types of JOIN:

• INNER JOIN — to get only the records that match in both tables. For example, to get a list of orders with customer information, where the order and customer are linked by customer_id.

SELECT orders.id, customers.name
FROM orders
INNER JOIN customers ON orders.customer_id = customers.id;

• LEFT JOIN — when you need to get all records from the left table and the matching ones from the right, even if there is no match. For example, to display all customers and their orders, including customers without orders.

• RIGHT JOIN and FULL JOIN are used less frequently, but they help to get all records from one or both tables with matches.

JOIN helps to efficiently combine data for analytics, reports, and business logic.