LINE IN COLUMN

Question

Hi,
I have two tables :
- test (id_test, test)
- val_test (id_val_test, val_test, id_test)
id_test is the foreign key
My data are :
test : 1 test1
val_test : 1 val1 1
2 val2 1
3 val3 1
So if i made a joint, i have
1 val1 1
1 val2 2
1 val3 3
And i want this output :
1 val1 val2 val3
But each value must be in a column, i don't want concatenated fields
And i can have more than 3 values or less, it's completly flexible
Thanks for help

Answer 1

Or something a little more helpful...
SQL> create table myvalues(id number, category varchar2(1), value number);
Table created.
SQL>
SQL> insert into myvalues values (1, 'A', 10);
1 row created.
SQL> insert into myvalues values (1, 'B', 20);
1 row created.
SQL> insert into myvalues values (1, 'C', 40);
1 row created.
SQL> insert into myvalues values (2, 'A', 0);
1 row created.
SQL> insert into myvalues values (2, 'B', 50);
1 row created.
SQL> insert into myvalues values (2, 'C', 30);
1 row created.
SQL> select id, max(val1), max(val2), max(val3)
  2  from (
  3       select id,
  4              decode(category, 'A', value) as val1,
  5              decode(category, 'B', value) as val2,
  6              decode(category, 'C', value) as val3
  7       from myvalues
  8       )
  9  group by id
10  /
        ID  MAX(VAL1)  MAX(VAL2)  MAX(VAL3)
         1         10         20         40
         2          0         50         30
SQL>