좀 무식한 감이 있습니다만, 아래처럼 처리해봤습니다.
SELECT v
,DECODE(INSTR(v ,'1'),0,0,1) w1
,DECODE(INSTR(v ,'2'),0,0,1) w2
,DECODE(INSTR(v ,'3'),0,0,1) w3
,DECODE(INSTR(v ,'4'),0,0,1) w4
,DECODE(INSTR(v ,'5'),0,0,1) w5
,DECODE(INSTR(v ,'6'),0,0,1) w6
,DECODE(INSTR(v ,'7'),0,0,1) w7
FROM (
SELECT '123567' v FROM dual UNION ALL
SELECT '67' v FROM dual)