dokuwiki

This is an old revision of the document!

---

select employee_id as id, job_id, last_name, to_date(sysdate) from employees
union 
select employee_id, job_id, to_char(null), to_date(end_date) from job_history
order by 1,3,4 desc

select first_name, last_name from employees where employee_id in
(
  select employee_id
  from employees  
  where job_id = 'IT_PROG'
 union
  select employee_id
  from job_history 
  where job_id = 'IT_PROG'
)
------

select first_name, last_name, stand, datum from employees,  
(
  select employee_id, 
         job_id, 
         'jetzt' stand, 
         sysdate datum 
  from employees  
  where job_id = 'IT_PROG'
 union
  select employee_id, 
         job_id, 
         'früher' stand, 
         end_date datum 
  from job_history 
  where job_id = 'IT_PROG'
) history 
where history.employee_id = employees.employee_id