Select by Sum

Question

Hi all,
I am attempting to query back records based on whether the sum of a collumn is above 600 but get a "ORA-00934 group function is not allowed here" error. I have a sneaky feeling its because of the join Im using but I'm a beginner so not sure?
Any assistance would be greatly appreciated.
This is the query I am using:-
Regards
LJE
SELECT STAFF.PID,PERSON.FIRSTNAME,PERSON.LASTNAME,RATING_RECORD.RATE
FROM
STAFF INNER JOIN
CLIENT ON STAFF.PID = CLIENT.PID INNER JOIN
PERSON ON PERSON.PID = STAFF.PID AND PERSON.PID = CLIENT.PID INNER JOIN
INSURED_BY ON CLIENT.CID = INSURED_BY.CID INNER JOIN
POLICY ON POLICY.PNO = INSURED_BY.PNO INNER JOIN
COVERAGE ON POLICY.PNO = COVERAGE.PNO INNER JOIN
RATING_RECORD ON COVERAGE.COID = RATING_RECORD.COID
WHERE
SUM(RATING_RECORD.RATE) < 600

Answer 1

You need to aggregate the fields then use the HAVING clause, ie;
select staff.pid, person.firstname, person.lastname, sum(rating_record.rate)
  from staff inner join client on staff.pid = client.pid
       inner join person on person.pid = staff.pid and person.pid = client.pid
       inner join insured_by on client.cid = insured_by.cid
       inner join policy on policy.pno = insured_by.pno
       inner join coverage on policy.pno = coverage.pno
       inner join rating_record on coverage.coid = rating_record.coid
group by staff.pid, person.firstname, person.lastname
having sum (rating_record.rate) < 600