Need a help on stored procedure

Question

I have the sample data like the below.
Employee Id Key Value
1 Name Joe
1 Age 28
1 Addr Houston
1 Sex M
     2 Addr Chicago     
I need to get a result somethin like the below using a stored procedure.
ID Name Age Addr Sex
1 Jose 28 Houston M
2     null     null     Chicago     null
I need to write a stored proc for this......

Answer 1

Assuming list of keys is static:
with t as (
           select 1 employee_id,'Name' key,'Joe' val from dual union all
           select 1,'Age','28' from dual union all
           select 1,'Addr','Houston' from dual union all
           select 1,'Sex','M' from dual union all
           select 2,'Addr','Chicago' from dual
select  employee_id,
        min(case key when 'Name' then val end) name,
        min(case key when 'Age' then val end) age,
        min(case key when 'Addr' then val end) addr,
        min(case key when 'Sex' then val end) sex
  from  t
  group by employee_id
  order by employee_id
EMPLOYEE_ID NAME                                AGE     ADDR    SEX
          1 Joe                                 28      Houston M
          2                                             Chicago
SQL> SY.