Newb question - group by sequence number range

Question

Hi - I'm a newb to pl/sql but am pretty familiar with t-sql and sql server.
Here's my question:
I have a database table with ~1.6M records, call it "a". a has two columns, id (a sequence) and status. status has three possible values: null, error and success.
I want to write a query that will group the sequence numbers into sets of 100k and give the the count of nulls, errors and successes for that set. The output should be something like:
set null error success
1-100,000 x y z
100,001-200,000 x y z
200,001-300,000 x y z
Can anyone point me in the right direction?

Answer 1

I scaled it down with a factor 1000, and here is the idea:
SQL> create table a
  2  as
  3   select level id
  4        , decode(mod(level,3),1,'error',2,'success',null) status
  5     from dual
  6  connect by level <= 1600
  7  /
Tabel is aangemaakt.
SQL> select trunc((id-1)/100)*100 + 1 lb
  2       , trunc((id-1)/100)*100 + 100 ub
  3       , count(decode(status,'error',1)) err
  4       , count(decode(status,'success',1)) success
  5       , count(decode(status,null,1)) "NULL"
  6    from a
  7   group by trunc((id-1)/100)
  8  /
        LB         UB        ERR    SUCCESS       NULL
         1        100         34         33         33
       101        200         33         34         33
       201        300         33         33         34
       301        400         34         33         33
       401        500         33         34         33
       501        600         33         33         34
       601        700         34         33         33
       701        800         33         34         33
       801        900         33         33         34
       901       1000         34         33         33
      1001       1100         33         34         33
      1101       1200         33         33         34
      1201       1300         34         33         33
      1301       1400         33         34         33
      1401       1500         33         33         34
      1501       1600         34         33         33
16 rijen zijn geselecteerd.Regards,
Rob.