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with Your_table (COL1, COL2, COL3) as ( select 'A', 1, 'VAL1' from dual union all select 'A', 2, 'VAL2' from dual union all select 'A', 4, 'VAL3' from dual union all select 'B', 2, 'VAL4' from dual union all select 'B', 4, 'VAL5' from dual union all select 'B', 5, 'VAL6' from dual ) , rws_numbered (COL1, COL2, COL3, rn) as ( select COL1, COL2, COL3 , row_number()over(order by col1, col3) rn from Your_table ) , cte ( COL1, COL2, COL3, rn ) as ( select COL1, COL2, COL3, rn from rws_numbered where rn = 1 union all select t.COL1 , case when t.col1 = c.col1 then c.col2 + 1 else t.col2 end COL2 , t.COL3 , t.rn from rws_numbered t join cte c on c.rn + 1 = t.rn ) select COL1, COL2, case when exists (select null from Your_table t where t.COL1 = cte.COL1 and t.COL2 = cte.COL2) then COL3 else null end COL3 from cte order by 1, 2 ;
COL1
COL2
COL3
A
1
VAL1
A
2
VAL2
A
3
null
B
2
VAL4
B
3
null
B
4
VAL6