Load distinct rows with sequence

Question

Hi All
I have requirement at my client where we need to load distinct rows from the source TABLEA into TABLEB and add sequence in target TABLEB.
As we know in Oracle we cant use sequence with distinct keyword, one of the solution is to use the sequence in target so ODI will capture
distinct rows from source and use the sequence only in target table but if the source and target are on same schema then ODI doesn't create
C$ table but it load data directly into target table and we get the error of invalid use of sequence.It wors fine if source and target table on different
schema. I like to know if there is any way force ODI to create C$ table with distinct rows and load the sequence in target table only even source and
target are on same schema. Otherwise I have create two interface to capture the distinct rows firct and then update the same table with sequence
in second step. I really wanna avoid creating 2 interface for this simple job.Let me know if you have better solution.
Thanks
Kashif

Answer 1

user634784 wrote:
But is there any way to get the same outcome without using the subquery.In reality... No.
You can hide the fact that you have to generate a row_number for the records by using a view... ;)
SQL> ed
Wrote file afiedt.buf
  1  create table t as select 1 as Empid, to_date('01-jan-2008','DD-MON-YYYY') as startdate, null as enddate, 'O1' as organisation from dual union all
  2                    select 2, to_date('2-jan-2008','DD-MON-YYYY'), to_date('31-jul-08','DD-MON-YYYY'), 'O1' from dual union all
  3                    select 3, to_date('2-jan-2008','DD-MON-YYYY'), to_date('31-jul-08','DD-MON-YYYY'), 'O1' from dual union all
  4                    select 4, to_date('5-jan-2008','DD-MON-YYYY'), to_date('31-jul-08','DD-MON-YYYY'), 'O2' from dual union all
  5                    select 5, to_date('2-jan-2008','DD-MON-YYYY'), to_date('31-jul-08','DD-MON-YYYY'), 'O2' from dual union all
  6                    select 6, to_date('2-jan-2008','DD-MON-YYYY'), to_date('31-jul-08','DD-MON-YYYY'), 'O2' from dual union all
  7                    select 7, to_date('2-jan-2008','DD-MON-YYYY'), to_date('31-jul-08','DD-MON-YYYY'), 'O3' from dual union all
  8*                   select 8, to_date('2-jan-2008','DD-MON-YYYY'), to_date('31-jul-08','DD-MON-YYYY'), 'O3' from dual
  9  /
Table created.
SQL> ed
Wrote file afiedt.buf
  1  create view vw_x as
  2* select empid, startdate, enddate, organisation, row_number() over (partition by organisation order by empid) rn from t
SQL> /
View created.
SQL> select * from vw_x where rn = 1;
     EMPID STARTDATE ENDDATE   OR         RN
         1 01-JAN-08           O1          1
         4 05-JAN-08 31-JUL-08 O2          1
         7 02-JAN-08 31-JUL-08 O3          1
SQL>