Discoverer Custom SQL Report with Group By,Having

Hi all,
I'm working with Discoverer 4.1.41.05 and retrieve data from Oracle HRMS.
I want to create a report based on a custom SQL Folder in Discoverer Administration to solve the following scenario:
SELECT EMPLOYEE_NUMBER FROM PER_ALL_PEOPLE_F
MINUS
SELECT EMPLOYEE_NUMBER FROM PER_ALL_PEOPLE_F,PER_EVENTS, PER_BOOKINGS
GROUP BY EMPLOYEE_NUMBER
HAVING SUM(PER_EVENTS.ATTRIBUTE1) >= 10)
The problem is when I run the sql from SQL*Plus is working fine producing the correct result.
When I create the Custom Folder and create a Discoverer report based on it I retrieve all employees since the second select statement retrieve no rows!
Does anyone has any idea how I can solve this problem or if there is another way to create this scenario?
Any feedback is much appreciated.
Thanking you in advance.
Elena

Hi Elena,
I think you are missing some joins, you could try something like:
SELECT EMPLOYEE_NUMBER FROM PER_ALL_PEOPLE_F p
WHERE NOT EXISTS
(SELECT NULL
FROM PER_EVENTS e, PER_BOOKINGS b
WHERE b.person_id = p.person_id
AND e.event_id = b.event_id
GROUP BY b.person_id
HAVING SUM(e.ATTRIBUTE1) >= 10)
Rod West

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