How to select TopN members on a given level?

Question

Background:
"Products_dim" has two level,"Product" and "Category".
Target:
Select Products holding biggest Cost_measure Value on
"Product" level.
Code:
select distinct PROD_id
FROM TABLE(
OLAP_TABLE(
'SCOTT.SALES_AWS DURATION QUERY',
'middle_table',
'call TOPN_PRG',
'MEASURE COST FROM SALES_AWS!cost_measure
DIMENSION customers_dim WITH
HIERARCHY customers_dim_parentrel
DIMension prod_id FROM sim_products_dim WITH
HIERARCHY sim_products_dim_parentrel
the context of prgram 'TOPN_PRG' is:
limit products_dim to products_dim_levelrel 'PRODUCT'
limit products_dim to top 4 basedon COST_MEASURE
Return Result:
CATEGPRY.1
CATEGORY.2
PRODUCT.2
PRODUCT.4
My Desire results:
PRODUCT.2
PRODUCT.4
PRODUCT.8
PRODUCT.12
somebody can tell me how to achive it?

Answer 1

I haven't read through this extensively, but think you need just a simple tweak in your program:
limit products_dim to products_dim_levelrel 'PRODUCT'
limit products_dim KEEP top 4 basedon COST_MEASURE
Basically, first you pick all products at the PRODUCT level, and then of those you keep the top 4.
if you say "to" in the 2nd limit, then it ignores anything in status and starts over from scratch.
Hope this helps,
Scott