Customer Exit Variable to fetch the data from the cube..

Question

Hello Gurus,
I am having a requirement to select the latest changed record from the cube while executing the query.  where we are having the Calday as the date with a variable .
I suggested my client we can filter it at the DSO leve or Data loading level but my client dont want to distrurb the existing design so he want to perfrom the changes at the Query level only.
For Example we are having below records in the cube.
PO             Material     Calday       Qty         Price
101            ABC          1/12           100         10
101            ABC          2/12            100         10
101            ABC          3/12            100         11
I am having Calday in the selection screen as the variable.
Now from the above example i need to show the record which has been changed on 3/12.
For this i am planning to write the customer exit variable on the calday , when the user enter the range of Calday then i will fetch the whole records which fall in between the range and i will sort each PO with respect to the date and i will pick those which are the latest records.
My Concerns:
!. Kindly let me know if it is possible and what are the other things that i need to consider.
2. Did it will impact the performance.
Waiting for your quick replies
Thanks & Regards
KK

Answer 1

Hi Mate,
Sorry for late reply.
By d way in your word.
initially when the user enter the date range as the vairable input. suppose 1/12 to 31/12 then i will pick all those records which fall in this range.
suppose the records are
PO Date
P1 01/12
P1 02/12
P2 02/12
P2 03/12
P3 03/12
P3 04/12
In the customer exit variable Now for each PO i will sort the date in ascending order and i will pick the last record to display it in the Report.
The ouput will be
PO Date
P1 02/12
P2 03/12
P3 04/12
Now hope you are aware about exit variable concept.
so what value will pass in the calday filter.
here after sorting on each PO , you will get 3 different dates, 02/12 for P1
03/12 for P2
and 04/12 for P3
Now if you are aware about exit variable concept, then you will pass this three date to CALDAY(I_t_VAR_Range-low = ...)
but how query will understand that for P1 calday filter value is 02/12, for P2 calday filter value is 03/12.... and so on...
actually i have also experienced this kind of issue 1-2 years before, i have tried same thing at that time without thinking and stuck with this problem..
By d way you can also learn from your mistake.. so just try ur logic and then you will understand what is the problem?
By d way this will not work, parallel you can work on other solution.