Query to join 2 tables by interval of value

Question

Hi all
I need your help in creating a query to join 2 tables by interval of values.
The thing i want to d ois like this: i have 2 tables the first one containing list of serial number and the secon is containing interval of serial number (startnumber and end number) and other information like the user creating the serial number.
I want to list all serial numbers from the first table and the user creating each serial number from the second one if the serial number is between each interval of the second table.
here is an example>
SQL> create table test1 (code varchar2(1), serial number);
Table created.
SQL> create table test2 (requester varchar2(10),startno number, endno number);
Table created.
SQL> insert into test1 values('A',1);
1 row created.
SQL> insert into test1 values('B',3);
1 row created.
SQL> insert into test1 values('C',8);
1 row created.
SQL> insert into test1 values('D',12);
1 row created.
SQL> insert into test1 values('E',20);
1 row created.
SQL> commit;
Commit complete.
SQL> insert into test2 values('TATA',1,5);
1 row created.
SQL> insert into test2 values('TOTO',6,10);
1 row created.
SQL> commit;
Commit complete.
The result i want to get are:
TESt1.CODE     TEST2.REQUESTER
A          TATA
B          TATA
C          TOTO
D          null
E          null

Answer 1

Use outer join:
select  code,
        requester
  from  test1,
        test2
  where serial between startno(+) and endno(+)
  order by code
C REQUESTER
A TATA
B TATA
C TOTO
D
E
SQL> SY.