Having alot of trouble with a query

Question

Hey, I'm having trouble with a query for an assignment. The questions states
Find the name of the highest earning employee in each location, excluding managers, salespeople and the president
The problem I'm having is that my query returns the highest earning employee from each location perfectly, but one of those returned is a salesperson, so the next highest earning person in that location should be returned.
We are also not allowed to create a temporary table
Here's my code so far
select
e.first_name,
e.last_name,
e.salary,
l.regional_group
from employee e
inner join department d
on d.department_id = e.department_id
inner join location l
on l.location_id = d.location_id
where e.salary = (select max(e2.salary) from employee e2
inner join department d2
on d2.department_id = e2.department_id
inner join location l2
on l2.location_id = d2.location_id
where l2.location_id = l.location_id
and e.job_id !=672;
the job_id refers to what job title they have
and here's the schema below
Schema
Any help you could give me on this would be fantastic as I have been pulling my hair out over this for the last day.
Edited by: 837562 on 17-Feb-2011 02:14

Answer 1

Maybe you can try the below:
with job_location as
select 1 location_id, 'loc1' regional_group from dual
union
select 2 location_id, 'loc2' regional_group from dual
department as
select 1 department_id, 'dept1' dept_name, 1 location_id from dual
union
select 2 department_id, 'dept2' dept_name, 2 location_id from dual
job_FUNCTION as
select 1 job_id, 'MANAGER' job_function from dual
UNION
select 2 job_id, 'SALES' job_function from dual
UNION
select 3 job_id, 'PRESIDENT' job_function from dual
UNION
select 4 job_id, 'REST_1' job_function from dual
UNION
select 5 job_id, 'REST_2' job_function from dual
employee as
select 1 employee_id, 'a' last_name, 100 salary, 1 department_id, 4 JOB_ID from dual union
select 2 employee_id, 'b' last_name, 200 salary,1, 5 from dual union
select 3 employee_id, 'c' last_name, 300 salary,1, 2 from dual union
select 4 employee_id, 'd' last_name, 400 salary,1, 2 from dual union
select 5 employee_id, 'e' last_name, 500 salary,2, 3 from dual union
select 6 employee_id, 'f' last_name, 600 salary,2, 3 from dual union
select 7 employee_id, 'g' last_name, 700 salary,2, 4 from dual union
select 8 employee_id, 'h' last_name, 800 salary,2, 4 from dual
select
regional_group, employee_id, max_salary
from
select e.regional_group, b.department_id, employee_id, salary, max(b.salary) over (partition by b.department_id order by b.department_id) max_salary
from
employee b,
job_function c,
department d,
job_location e
where
b.job_id = c.job_id and
b.department_id = d.department_id and
e.location_id = d.location_id and
c.job_id not in (1,2,3) 
) where salary = max_salary;
"REGIONAL_GROUP"     "EMPLOYEE_ID"     "MAX_SALARY"
"loc1"     "2"     "200"
"loc2"     "8"     "800"