记一下样子。
明白它的应用场景。
SELECT account_id, product_cd, cust_id, avail_balance FROM account WHERE open_emp_id <> (SELECT e.emp_id FROM employee AS e INNER JOIN branch AS b ON e.assigned_branch_id = b.brach_id WHERE e.title = 'Head Teller' AND b.city = 'Woburn');
SELECT branch_id, name, city FROM branch WHERE name IN('Headquarters', 'Quincy Branch'); SELECT branch_id, name, city FROM branch WHERE name IN('Headquarters', 'Quincy Branch');