ANSI Standard decode to CASE

Question

Hi all,
select
id
,one
,two
From
     (select id
     , one
     , two
     , Max(decode(TYPE, "ER", 3*4, 4*7)
     from
          (select id
          , sum(one) as one
          , sum(two) as two
          from t1
          group by id)
     group by id, one, two
     ) temp inner join t2....
The above query is just a sample structure to tell the problem that i am facing. It works fine, but i need to convert it to ANSI Standard.
Hence I need to convert the DECODE to CASE statement. but if i convert to CASE, i need to use any of the GROUP BY FUNCTIONS, but if i use the MAX of any group by functions, the result would be wrong...how to overcome it
Thanks

Answer 1

Hi,
Yes I did a silly mistake, the code I gave was for only the decode but when I converted it to case statement, there was a silly mistake, which i corrected.
Now i corrected it to
Select
     COL1
     , Col2
     , MAX(CASE WHEN Upper(TYPE) = 'YR' THEN Round(3.43*3, 2) END) AS CALC1
     , Max(CASE WHEN Upper(TYPE) = 'ZP' THEN Round(3.12*12, 2) END) AS CALC2
From
     Group by....
but now when i add a sum of the calc1 & calc2, I am not getting any results the column is blank. Is there anything that i missed
Select
     COL1
     , Col2
     , MAX(CASE WHEN Upper(TYPE) = 'YR' THEN Round(3.43*3, 2) END) AS CALC1
     , Max(CASE WHEN Upper(TYPE) = 'ZP' THEN Round(3.12*12, 2) END) AS CALC2
     , (MAX(CASE WHEN Upper(TYPE) = 'YR' THEN Round(3.43*3, 2) END
     + Max(CASE WHEN Upper(TYPE) = 'ZP' THEN Round(3.12*12, 2) END)) as SUM3
From
     Group by....
Thanks