How to get the max(level)?

Question

Hi,
The below query returns level and other selected columns.
I need to get the max(level) 2nd column value in the below example.How to modify the query?
Ex
Level      max(level)     id
1 5 101
1 5 102
1 5 103
2 5 104
2 5 105
3 5 107
4 5 120
5 5 134
5 5 280
SELECT DISTINCT level lvl
,form_frms.emp_id
,form_frms.ing_emp_id
,form_frms.prve_id
,CASE
WHEN (select div_dn
from epm_prod epm
where epm.emp_id= form_frms.ing_emp_id) ='Y' THEN DIV_DN
WHEN NVL((select distinct 'N'
from emp_pro_version prvv
where prvv.is_py='Y' and
prvv.IS_VERSION ='N' and
prvv.emp_id=form_frms.ing_emp_id) ,'Y')='N'
THEN 'Y'
WHEN NVL((select distinct 'Y'
from employee epm
where emp.emp_id=form_frms.ing_emp_id
and epm.status<>'NEW') ,'N') ='Y'
THEN 'Y'
ELSE 'N'
END
ELSE 'N'
END UN_KNOWN_ID
FROM (SELECT empvv1.prvv_id
FROM emp_view_version empvv1
WHERE empvv1.is_version = 'Y'
) form_frms
START WITH form_frms.emp_id = :lv_emp_id
CONNECT BY PRIOR form_frms.ing_emp_id = form_frms.emp_id
ORDER BY level DESC, form_frms.emp_id,UNKNOWN_ID ASC;
Edited by: shivasha on Feb 9, 2013 12:24 AM

Answer 1

Maybe
select lvl,
       max(lvl) over (order by null rows between unbounded preceding and unbounded following) max_level,
       emp_id,
       unknown_id
  from (SELECT DISTINCT
               level lvl,
               form_frms.emp_id,
               form_frms.ing_emp_id,
               form_frms.prve_id,
               CASE WHEN (select div_dn
                            from epm_prod epm
                           where epm.emp_id = form_frms.ing_emp_id
                         ) = 'Y'
                    THEN DIV_DN
                    WHEN NVL((select distinct 'N'
                                from emp_pro_version prvv
                               where prvv.is_py = 'Y'
                                 and prvv.IS_VERSION = 'N'
                                 and prvv.emp_id=form_frms.ing_emp_id
                             ),'Y'
                            ) = 'N'
                    THEN 'Y'
                    WHEN NVL((select distinct 'Y'
                                from employee epm
                               where emp.emp_id = form_frms.ing_emp_id
                                 and epm.status != 'NEW'
                             ),'N'
                            ) = 'Y'
                    THEN 'Y'
                    ELSE 'N'
               END UNKNOWN_ID
          FROM (SELECT empvv1.prvv_id
                  FROM emp_view_version empvv1
                 WHERE empvv1.is_version = 'Y'
               ) form_frms
         START WITH form_frms.emp_id = :lv_emp_id
         CONNECT BY PRIOR form_frms.ing_emp_id = form_frms.emp_id
ORDER BY lvl DESC,emp_id,UNKNOWN_IDRegards
Etbin