Set filter (with presentation variables) for requests using "SQL Issued"

Question

if I have a "SQL issued":
SELECT saw_0 saw_0, saw_1 saw_1, saw_2 saw_2, saw_3 saw_3, saw_4 saw_4 FROM (
SELECT saw_0 saw_0, saw_1 saw_1, SUM(saw_2) saw_2, SUM(saw_3) saw_3, SUM(saw_4) saw_4
FROM
SELECT "Period"."YearMonth" saw_0, "Customer"."CustomerName" saw_1, COUNT("Sales"."SalesDate") saw_2, "Sales"."No.OfConsumer" saw_3, 0 saw_4
FROM CRM
WHERE ("Period"."YearMonth" >= 200904) AND ("Period"."YearMonth" <= 200910)
UNION ALL
SELECT "Period"."YearMonth" saw_0, "Customer"."CustomerName" saw_1, 0 saw_2, 0 saw_3, Count("SuperSales"."SuperSalesDate") saw_4
FROM CRM
WHERE ("Period"."YearMonth" >= 200904) AND ("Period"."YearMonth" <= 200910)
) t1
GROUP BY saw_0, saw_1
ORDER BY saw_0, saw_1
) t2 ORDER BY saw_0
actually, in this request, I would like to set a filter for "Period"."YearMonth" using presentation variable.
is it possible to do this ?
Thanks !!

Answer 1

Hi Forreging,
You can use presentation variables, but not if you are directly setting the SQL via the Advanced tab.
Instead, build up the first report just like the first part of the UNION statement. Then use the "Combine with Similar request" to build up the logic for the second part of the query.
When you approach it this way, you have the ability to set filters on each "Sub-Request" via the Criteria tab. Otherwise, OBIEE only lets you add a filter at the outer level of the query when you go the route of setting the SQL in the Advanced tab.
Good luck and if you find this post useful, please award points!
Best regards,
-Joe