Aggregate in ODI - Part 2

Question

Not sure why I am not getting how to aggregate in ODI! I have been trying to come up with a way to produce these results in ODI for 2 weeks now, and I am missing something. I don't believe this should be that difficult. This is the sql code I am using in sqlplus to yield test results and here is my scenerio:
sql:
select project_code
from
(select project_code, floor(sum(unit_price*quantity)) as total
from table1
where order_base_number=8004
group by project_code)
where total =
(select max(floor(sum(unit_price*quantity)))
from table1
where po_header_id = 8004
group by project_code)
and rownum = 1;
Source: Table1 contain fields:
order_base_number
order_mod_number
line_item
quantity
unit_price
project_code
Target: Aggregate_Table_1 contains
order_base_number
order_mod_number
aggregate_project_code = the project_code should be the project code with the highest total_cost grouped by order_base_number,order_mod_number (if the result returns = value then return 1st occurence rn=1)
for example,
order - 1001
mod_number - 200
line_item - 1
quantity - 100
unit_price - 100
project_code - 55001
order - 1001
mod_number - 200
line_item - 2
quantity - 100
unit_price - 10
project_code - 55002
order - 1001
mod_number - 200
line_item - 3
quantity - 100
unit_price - 5
project_code - 55001
Results
order_base_number - 1001
order_mod_number - 200
aggregate_project_code - 55001

Answer 1

Sorry for the late reply .
Here are the two solutions i can think of
SOLUTION 1
Here replace the above case statement with below modified query . Please provide the table name with schema.table_name format and also change the column names accordingly.
SELECT DISTINCT
ORDERS,
MOD_NUMBER,
CASE WHEN RANK () OVER (PARTITION BY ORDERS,MOD_NUMBER ORDER BY (UNIT_PRICE*QUANTITY) DESC )=1
THEN PROJECT_CODE
ELSE
     (  SELECT * FROM
               SELECT DISTINCT CASE WHEN MAX(UNIT_PRICE*QUANTITY) OVER (PARTITION BY ORDERS,MOD_NUMBER) = UNIT_PRICE*QUANTITY 
                  THEN PROJECT_CODE END "PROJ_CODE"
               FROM ORD )
     WHERE PROJ_CODE IS NOT NULL  )
END
FROM ORD;In the above code what i am actually doing is bring the same max project code even in else condition , so instead of project code and null there will be only single distinct project_code and should give you the results you are looking for .I have tried with the data you have provided.
Solution 2- Using Temporary Table.
CASE WHEN RANK () OVER (PARTITION BY ORDERS,MOD_NUMBER ORDER BY (UNIT_PRICE*QUANTITY) DESC )=1
THEN NVL(PROJECT_CODE,'NA')
END Modify the case statement this way so that your results will be some thing like this
6007 6002 111110
6007 6005 NA
6007 6006 111130
6007 6006 null
Now before loading into target table add a filter for nulls so that you load all nulls and for records with na
use replace to change NA to nulls
REPLACE( <COLUMN_NAME>,'NA',NULL) hope this solves your requirement.