How to find the occurance

Question

Hi
I have a table with 2 columns
id value
1 50
2 30
2 75
3 40
3 15
There is two values for id number 2 and 30 is the least value , so the first occurance will come as
id value occurance
1 50 1
2 30 1
2 75 2
3 40 2
3 15 1
Can any one help me
Thanks
Sandeep

Answer 1

hi,
do you mean this.
  1  with t as(
  2  select 1 id , 50 value from dual union all
  3  select 2, 30 from dual union all
  4  select 2, 75 from dual union all
  5  select 3, 40 from dual union all
  6  select 3, 15 from dual )
  7  select id,value, row_number() over(partition by id order by id, value)new_id
  8* from t
SQL> /
        ID      VALUE     NEW_ID
         1         50          1
         2         30          1
         2         75          2
         3         15          1
         3         40          2