I am looking at a practice test that doesn't have explanations about the correct answers. The question I'm confused about basically asks why the following SQL statement can never work:

SELECT oi.order_id, product_jd, order_date
FROM order_items oi JOIN orders o
USING(order_id);

The answer it gave was: "The statement would not execute because the column part of the USING clause cannot have a qualifier in the SELECT list"

Can someone elaborate on this? I am pretty stumped.