607. Sales Person
```\nSELECT name FROM salesperson\nWHERE sales_id NOT IN \n    (SELECT sales_id FROM orders WHERE com_id IN \n\t(SELECT com_id FROM company WHERE name=\'RED\'))
```\nSELECT name FROM salesperson\nWHERE sales_id NOT IN \n    (SELECT sales_id FROM orders WHERE com_id IN \n\t(SELECT com_id FROM company WHERE name=\'RED\'))
['MySQL']