Issue using not equal to operator

Question

Oracle: 10.2g
Sample table data:
-- Table psn
type_number       name        category
1                      carl           5
1                      carl           5
1                      carl           5
2                      mike         5
2                      mike         5
3                      bob          5
3                      bob          5
3                      bob          5
4                      greg         5
5                      chris         5
6                      charles      5
6                      charles      5
--Table series
type_number       year         cat_id
1                      1999        2
1                      2000        2
1                      2001        2
2                      2001        2
2                      2002        2
4                     1995        2
5                     2008        1
6                     2007        2
6                     2008        1
Query
select s.type_number, s.name
from   inv.psn s
select distinct temp.type_number, temp.name
from inv.series f,
inv.psn s,
where s.type_id = f.type_id
and s.category = 5
and f.cat_id = 2
) temp
where s.category = 5
and temp.type_numebr != s.type_number
Desired result set
type_number       name       
3                    bob

Answer 1

Bob and Chris:
SQL> with psn as (
  2  select 1 type_number, 'carl' name, 5  category from dual union all
  3  select 1, 'carl',           5 from dual union all
  4  select 1, 'carl',           5 from dual union all
  5  select 1, 'carl',           5 from dual union all
  6  select 2, 'mike',         5 from dual union all
  7  select 2, 'mike',         5 from dual union all
  8  select 3, 'bob',         5 from dual union all
  9  select 3, 'bob',          5 from dual union all
10  select 3, 'bob',          5 from dual union all
11  select 4, 'greg',         5 from dual union all
12  select 5, 'chris',         5 from dual union all
13  select 6, 'charles',      5 from dual union all
14  select 6, 'charles',      5 from dual),
15  series as (
16  select 1 type_number, 1999 year, 2 cat_id from dual union
17  select 1, 1999,        2 from dual union all
18  select 1, 2000,       2 from dual union all
19  select 1, 2001,        2 from dual union all
20  select 2, 2001,        2 from dual union all
21  select 2, 2002,        2 from dual union all
22  select 4,1995,        2 from dual union all
23  select 5,2008,        1 from dual union all
24  select 6,2007,        2 from dual union all
25  select 6,2008,        1 from dual
26  )
27  select distinct s.type_number, s.name
28  from   psn s
29  where (s.type_number, s.name) not in
30  (select s.type_number, s.name
31  from   psn s, series f
32  where s.type_number = f.type_number
33  and s.category = 5
34  and f.cat_id = 2
35  );
TYPE_NUMBER NAME
          3 bob
          5 chrisMax
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