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CREATE TABLE Invoice ([ID] int, [SPENT] int, [ROLEID] int) ; INSERT INTO Invoice ([ID], [SPENT], [ROLEID]) VALUES (1, 500, 1), (2, 400, 2) ; CREATE TABLE ROLES ([ROLE_ID] int, [DEPARTMENT_ID] int, [ROLE_NAME] varchar(10)) ; INSERT INTO ROLES ([ROLE_ID], [DEPARTMENT_ID], [ROLE_NAME]) VALUES (1, 1, 'AGENT'), (2, 2, 'SUPERVISOR') ; CREATE TABLE DEPARTMENT ([DEP_ID] int, [DEP_NAME] varchar(16)) ; INSERT INTO DEPARTMENT ([DEP_ID], [DEP_NAME]) VALUES (1, 'ACCOUNTING'), (2, 'CUSTOMER_SERVICE'), (3, 'HRA') ; select D.DEP_NAME, I.SPENT from DEPARTMENT D left join ROLES R on D.DEP_ID = R.DEPARTMENT_ID left join Invoice I on R.ROLE_ID = I.ROLEID
DEP_NAME
SPENT
ACCOUNTING
500
CUSTOMER_SERVICE
400
HRA
null