Grouping in select

Question

Hello
I wont to join to tables , one of them - t_max -  contain set of dates
create table t_max(t_max_id       number,
                                    t_max_dat   date)
create table t_dat(t_dat_id        number
                                  t_dat_dat   date)
whether it is possible in this case somehow to be without server function like
create or replace function f_get_max_dat(id in number) return date is
  Result date;
begin
  select max(t_max_dat)
    into Result
    from t_max
  where t_max_id = id;
  return(Result);
end;
to get data
select
  t_max_id
         ,max(t_max_dat)
         ,t_dat_dat
from
t_max, t_dat
where
t_max_id  = t_dat_id
group by ...
I'm usung 11.2.0.3
Thanks and regards,
Pavel

Answer 1

Any reason you can't just do this:
select   
  t_max_id  
         ,max(t_max_dat)  
         ,t_dat_dat  
from   
t_max, t_dat  
where 
t_max_id  = t_dat_id  
group by t_max_id,t_dat_dat