CASE statement with Oacle 8i

Question

I have a problem. I have this SQL :
select SLA_MET_TAB.SLA_MET_COL, count(*),((count(*)/Total)*100), Total
from
(select (case
when (completion_date - approval_date) -
                              (case
                         when to_char(approval_date,'D') < 5 then 0
     when to_char(approval_date,'D') = 5 then 3
                    when to_char(approval_date,'D') = 6 then 2
                         when to_char(approval_date,'D') = 7 then 1
               end -
                    case
                              when to_char(approval_date,'hh24') > 15 then 1
               when to_char(approval_date,'MI') > 0 and to_char(approval_date,'hh24') = 15 then 1
                         else 0
               end -
               case
                         when completion_date in (select holiday from csacweb_owner.holiday) then 1
                    else 0
                         end)< 1.375 then 0
               else 1
          end) SLA_MET_COL
from csacweb.orders
where community_id = 166 and completion_date is not null and approval_date is not null) SLA_MET_TAB,
(select count(*) Total from csacweb.orders where community_id = 166)
group by SLA_MET_TAB.SLA_MET_COL, Total;
Then problem is that when I'm trying to execute, I always have an error message that says : not a GROUP BY expression ... anyone can help me ?

Answer 1

Which version of the database are you running? This simplification of your query runs on my 9.2.0.6 install...
SQL> select object_type, count(*) as my_funcs, total as all_funcs, count(*)/total as pct
  2  from   all_objects o
  3         , ( select count(*) as total from all_objects
  4             where object_type = 'FUNCTION' )
  5  where  o.object_type = 'FUNCTION'
  6  and    o.owner = USER
  7  group by object_type, total
  8  /
OBJECT_TYPE          MY_FUNCS  ALL_FUNCS        PCT
FUNCTION                    1         48 .020833333
SQL> Cheers, APC