문제
정답
SELECT name
FROM SalesPerson
WHERE sales_id NOT IN (
SELECT sales_id FROM Orders
WHERE com_id IN
(SELECT com_id from Company WHERE name = 'RED')
)
SELECT name
FROM SalesPerson
WHERE sales_id NOT IN (
SELECT sales_id FROM Orders
WHERE com_id IN
(SELECT com_id from Company WHERE name = 'RED')
)