How i will find out count of record

Question

there is a table emp.it consist two column CODE ,COUNTRY. has value like
1, india
1,china
1,japan
1,koria
2,india
2,china
2, japan
2,viatenam
2,finland
3,india
3,japan
3,china
3,america
3,russia
4, jermany
4,france
i want to see distinct count of record which consist country 'india','china','japan'(a code which has all these 3 values). according to this value output should be 3 (1,2,3)

Answer 1

Better suited for PL/SQL forum and here is my attempt at solving this.
SQL> with datatab as (select 1 code, 'india' country from dual
  2  union all
  3  select 1,'china' from dual
  4  union all
  5  select 1,'japan' from dual
  6  union all
  7  select 1,'koria' from dual
  8  union all
  9  select 2,'india' from dual
10  union all
11  select 2,'china' from dual
12  union all
13  select 2, 'japan' from dual
14  union all
15  select 2,'viatenam' from dual
16  union all
17  select 2,'finland' from dual
18  union all
19  select 3,'india' from dual
20  union all
21  select 3,'japan' from dual
22  union all
23  select 3,'china' from dual
24  union all
25  select 3,'america' from dual
26  union all
27  select 3,'russia' from dual
28  union all
29  select 4, 'jermany' from dual
30  union all
31  select 4, 'france' from dual)
32  select distinct a.code from datatab a
33  where 3 = (select count(code) from datatab b where a.code =b.code and b.country in ('india','china','japan'));
      CODE
         1
         2
         3
3 rows selected.