Hello, I am doing the SQL course, and I am in the Inner Joins session, I have been working very well with all the examples, but something is happening, that I do not know how to correct it, every time I want to execute this query:
SELECT *
FROM orders
JOIN customers
ON orders.customer_id = customers.customer_id
or
SELECT order_id, o.customer_id, first_name, last_name
FROM orders o
JOIN customers c
ON o.customer_id = c.customer_id
it shows me that there is an error.
Could anyone help me, Thanks