Pivot table (Year, Day, Hour)

Question

Hi there,
I was wondering how do i simulate the pivot table concept if the variables are Days in the year or Hours in the year.
My table have columns
create table mytable(
keycol_onenumber(2),
keycol_two number(2),
keycol_three number(2),
keycol_four number(2),
keycol_five number(2),
year number(4),
day number
hour number(12,5),
values number(10,5));
Now for change in each keycolumn, and then for the day in the year or hour in the year i have to print values in the next line.
I looked at some of "asktom" articles which talks about using decode , but i don't think i can do that.
Can anyone suggest me ideas as to how to proceed.
THanks a bunch and have a great day.

Answer 1

I admit 7th column is null XOR 8th column is null
if you need 8700 columns, you can use 8700 decode.
SQL> with tbl as
  2    (select 11111 c1, 11 c2, 222 c3, 4444 c4, 1 c5, 2006 c6, 200     c7,null c8, 1.2 c9 from dual union all
  3     select 00001 c1, 10 c2, 555 c3, 7777 c4, 2 c5, 2006 c6, 121  c7,null c8, 2.3 c9 from dual union all
  4     select 12121 c1, 9  c2, 111 c3, 1111 c4, 1 c5, 2006 c6, null c7,2333 c8, 1.1 c9 from dual union all
  5     select 11111 c1, 11 c2, 222 c3, 4444 c4, 1 c5, 2006 c6, 100  c7,null c8, 1.2 c9 from dual )
  6  select
  7      c1,c2,c3,c4,c5,c6,
  8      decode(
  9          case when c7 is null and c8 is not null then 1 when c7 is not null and c8 is null then 2 else 3 end,
10          1, 'HOURS',
11          2, 'DAYS',
12          'N/A') type,
13  max(decode( case when c7 is null and c8 is not null then 1 when c7 is not null and c8 is null then 2 else 3 end, 1, decode(c8,0,c9), 2, decode(c7,0,c9))) m0,
14  max(decode( case when c7 is null and c8 is not null then 1 when c7 is not null and c8 is null then 2 else 3 end, 1, decode(c8,100,c9), 2, decode(c7,100,c9))) m100,
15  max(decode( case when c7 is null and c8 is not null then 1 when c7 is not null and c8 is null then 2 else 3 end, 1, decode(c8,121,c9), 2, decode(c7,121,c9))) m121,
16  max(decode( case when c7 is null and c8 is not null then 1 when c7 is not null and c8 is null then 2 else 3 end, 1, decode(c8,200,c9), 2, decode(c7,200,c9))) m200,
17  max(decode( case when c7 is null and c8 is not null then 1 when c7 is not null and c8 is null then 2 else 3 end, 1, decode(c8,2333,c9), 2, decode(c7,2333,c9))) m2333,
18  max(decode( case when c7 is null and c8 is not null then 1 when c7 is not null and c8 is null then 2 else 3 end, 1, decode(c8,8783,c9), 2, decode(c7,8783,c9))) m8783
19  from tbl
20  group by c1,c2,c3,c4,c5,c6,
21          case when c7 is null and c8 is not null then 1 when c7 is not null and c8 is null then 2 else 3 end
22  /
        C1         C2         C3         C4         C5         C6 TYPE          M0       M100       M121       M200      M2333      M8783
     11111         11        222       4444          1       2006 DAYS                    1.2                   1.2
         1         10        555       7777          2       2006 DAYS                               2.3
     12121          9        111       1111          1       2006 HOURS                                                    1.1but it is going to be very slow.
you could also use a plsql function which returns a clob, or you could use xquery (XML) if you have a recent version of Oracle