hi Yogi,
i've attached a sample report that i built using the method that Sastry mentioned. this is the RankingWithSubreport file. please extract the contents and change the .txt extension to .rpt. the report doesn't have instructions on it but please follow what Sastry wrote.
if you've got a database that has window functions like rank then you may wish to look into create a command and base your report off of that. here's some sample syntax below that ranks suppliers by count of orders. note that this is in sap hana syntax so your database syntax may vary. the advantage of doing this in sql is the amount of work is less and it's easy to add in more ranks if you wish.
WITH
DT AS
(
SELECT DISTINCT "FCTSUPPLIERORDERS"."SUPPLIERID", COUNT("FCTSUPPLIERORDERS"."SUPPLIERORDERID") AS COUNT
FROM "STS"."FCTSUPPLIERORDERS" "FCTSUPPLIERORDERS"
GROUP BY "FCTSUPPLIERORDERS"."SUPPLIERID"
ORDER BY "FCTSUPPLIERORDERS"."SUPPLIERID"
),
RDT AS
(
SELECT
SUPPLIERID,
RANK() OVER (ORDER BY COUNT DESC) AS RANK
FROM DT
)
SELECT *
FROM DT, RDT
WHERE DT.SUPPLIERID = RDT.SUPPLIERID
ORDER BY DT.SUPPLIERID
which gives these results
i've also attached this report based on the derived tables.
i hope this helps,
jamie