About full join

Question

table t1
typeid productname
==== ==========
1234 pencil
1234 pen
1123 paper
1234 clips
2938 rubber
table t2
typeid productname
==== ==========
1234 pencil
1234 pen
1123 paper
1234 clips
1234 folder
table t3
typeid productname
==== ==========
1234 pencil
2256 glue
9093 clipboard
1234 clips
1234 folder
select t1.*, t2.*, t3.*
from (t1 full join t2 on (t1.typeid = t2.typeid and t1.productname = t2.productname))
full join t3 on (t1.typeid = t3.typeid and t1.productname = t3.productname
or t3.typeid = t2.typeid and t3.productname = t2.productname)
minus
select *
from t1, t2, t3
where t1.typeid = t2.typeid
and t2.typeid = t3.typeid
and t1.typeid = t3.typeid
and t1.productname = t2.productname
and t2.productname = t3.productname
and t1.productname = t3.productname;
output
=====
typeid1 productname1 typeid2 productname2 typeid3 productname3
1234 pen 1234 pen null null
2938 rubber null null null null
null null 1234 folder 1234 folder
null null null null 2256 glue
null null null null 9093 clipboard
how can i alter the query so that i can display two extra fields typeid and productname with all the values regardless if the values are null, like this
id prodname typeid1 productname1 typeid2 productname2 typeid3 productname3
1234 pen 1234 pen 1234 pen null null
2938 rubber 2938 rubber null null null null
1234 folder null null 1234 folder 1234 folder
2256 glue null null null null 2256 glue
9093 clipboard null null null null 9093 clipboard
thanks a million ;)

Answer 1

what about using using and without using minus
SQL> drop table t1;
Table dropped.
SQL> drop table t2;
Table dropped.
SQL> drop table t3;
Table dropped.
SQL> create table t1( typeid number,productname varchar2(9));
Table created.
SQL> insert into t1 values (1234,'pencil');
1 row created.
SQL> insert into t1 values (1234,'pen');
1 row created.
SQL> insert into t1 values (1123,'paper');
1 row created.
SQL> insert into t1 values (1234,'clips');
1 row created.
SQL> insert into t1 values (2938,'rubber');
1 row created.
SQL>
SQL> create table t2( typeid number,productname varchar2(9));
Table created.
SQL> insert into t2 values (1234,'pencil');
1 row created.
SQL> insert into t2 values (1234,'pen');
1 row created.
SQL> insert into t2 values (1123,'paper');
1 row created.
SQL> insert into t2 values (1234,'clips');
1 row created.
SQL> insert into t2 values (1234,'folder');
1 row created.
SQL>
SQL> create table t3( typeid number,productname varchar2(9));
Table created.
SQL> insert into t3 values (1234,'pencil');
1 row created.
SQL> insert into t3 values (2256,'glue');
1 row created.
SQL> insert into t3 values (9093,'clipboard');
1 row created.
SQL> insert into t3 values (1234,'clips');
1 row created.
SQL> insert into t3 values (1234,'folder');
1 row created.
SQL>
SQL> select typeid, productname,
  2      decode(t1.rowid,null,to_number(null),typeid) t1,
  3      decode(t1.rowid,null,to_char(null),productname) p1,
  4      decode(t2.rowid,null,to_number(null),typeid) t2,
  5      decode(t2.rowid,null,to_char(null),productname) p2,
  6      decode(t3.rowid,null,to_number(null),typeid) t3,
  7      decode(t3.rowid,null,to_char(null),productname) p3
  8  from t1 full join t2 using (typeid,productname) full join t3 using (typeid,productname)
  9  where t1.rowid is null or t2.rowid is null or t3.rowid is null
10  order by 1;
    TYPEID PRODUCTNA         T1 P1                T2 P2                T3 P3
      1123 paper           1123 paper           1123 paper
      1234 pen             1234 pen             1234 pen
      1234 folder                               1234 folder          1234 folder
      2256 glue                                                      2256 glue
      2938 rubber          2938 rubber
      9093 clipboard                                                 9093 clipboard
6 rows selected.