Full Outer Join 으로..

---쿼리시작---

with table_A (ID,이름) As
(
     Select 'A1','홍길동' Union All
     Select 'B1','박지성' Union All
     Select 'C1','김연아'
)
,table_B (ID,SEQ,학력) As
(
     Select 'A1',1,'박사' Union All
     Select 'A1',2,'석사' Union All
     Select 'A1',3,'학사' Union All
     Select 'B1',1,'석사' Union All
     Select 'B1',2,'학사' Union All
     Select 'C1',1,'학사'
)
,table_C (ID,SEQ,경력) As
(
     Select 'A1',1,'삼성생명' Union All
     Select 'A1',2,'LG전자  ' Union All
     Select 'B1',1,'농심    ' Union All
     Select 'B1',2,'오뚜기  ' Union All
     Select 'B1',3,'해태    ' Union All
     Select 'C1',1,'도시공사' Union All
     Select 'C1',2,'농촌공사'
)    
     Select IsNull(a.ID,b.ID)
           ,IsNull(a.SEQ,b.SEQ)
           ,a.학력
           ,b.경력
       From table_B a
                      Full Outer Join table_C b
                                                On a.ID = b.ID
                                               And a.SEQ = b.SEQ
   Order By IsNull(a.ID,b.ID) Asc
           ,IsNull(a.SEQ,b.SEQ) Asc

---쿼리끝---

감사합니다.

많은 도움 되었습니다~