Have you ever had to write SQL queries? Did you use SELECT, JOIN?

Yes, I have had to write SQL queries, including SELECT and JOIN.

SELECT is used to retrieve data from one or more tables. JOIN allows combining data from related tables based on a specific condition.

Example of a query with JOIN:

SELECT users.id, users.name, orders.id AS order_id, orders.amount
FROM users
JOIN orders ON users.id = orders.user_id
WHERE users.active = 1;

This query selects active users and their orders, joining the users and orders tables on the user_id field.