CREATE TABLE directors
	(`company_name` varchar(100), `director_name` varchar(100), `title` varchar(5), `age` int, `salary` int, `no_of_board` int, `company_hq_city` varchar(50), `company_hq_state` varchar(2), `data_yr` int)
;

SELECT A.company_name AS TiedTo, B.company_name AS TiedFrom 
FROM directors A INNER JOIN directors B ON A.director_name=B.director_name
WHERE A.company_name <> B.company_name