Inserting code in final steps of Update Rule transformation

Question

Hi,
I am extracting data into a cube from an ODS and doing some aggregation in the process. E.g 3 records in the ODS might become 1 in the cube.
This is fine for some things like Quantity, but not ideal for things like unit price. One work around is for the ODS to have a counter.
e.g
MATERIAL QUANITITY  UNIT_PRICE   COUNTER
1234     13         $1.50         1
1234     21         $1.50         1
1234     45         $1.50         1
This comes across into  a cube like
MATERIAL QUANITITY  UNIT_PRICE   COUNTER
1234     79         $4.50         3
- unit price can then be calculated by dividing unit price by counter - however it needs to be done within the query.
I thought perhaps we could perform this calculation when populating the cube, if the items were firstly collected within an interim table before being passed to the return_table.
i.e
1. Define key figure using ABAP routine and return table.
2. Append INTERIM_TABLE within update rules for each read of the ODS
3. Once all ODS records have been read and inserted at an aggregate level within INTERIM_TABLE, loop through INTERIM_TABLE, perform calculation and append RETURN_TABLE.
My question is: Is there a simple way to determine that all ODS items have been read (like an "at last" statement) and if so, where can this code be inserted? Can it be simply placed in the update rules routine if I have the appropriate logic to determine that all items have been read?
Thanks
Adrian

Answer 1

Hi Adrian,
   Why cant you use Addition, minimum or maximum in update rules...?? Here you can use Maximum option for Unit Price.
http://help.sap.com/saphelp_nw04/helpdata/en/3f/0e503c3c0d563de10000000a114084/content.htm
Hope it Helps
Srini