How to make view on xmlcolumn?

Question

Hi!
I tried to find an example, but it seems that i couldn't find the tree in the forest...
I have an table with normal columns and an xmltype-column,
where I want an view of it as if it was an join:
create table t
( id number,
att1 number,
xml1 xmltype
insert into t values (1,1,'<r>
<i><n>hans</n>
<age>2</age>
</i>
<i><n>peter</n>
<age>99</age>
</i>
<i><n>kim</n>
</i>
</r>');
insert into t values (2,5,'<r>
<i><n>hansi</n>
<age>22</age>
</i>
</r>');
commit;
--select e.id, e.att1, e.xml1.getstringval() from t e
Now I want this result, 4 rows and 4columns:
1,1,hans,2
1,1,peter,99
1,1,kim,<null>
2,5,hansi,22
How to write the select/view?
Best Regards
Bjoern

Answer 1

SQL> drop table t
  2  /
Table dropped.
SQL> create table t
  2  (
  3    id number,
  4    att1 number,
  5    xml1 xmltype
  6  )
  7  /
Table created.
SQL> insert into t values (1,1,xmltype('<r><i><n>hans</n><age>2</age></i><i><n>peter</n><age>99</age></i><i><n>kim</n></i></r>'))
  2  /
1 row created.
SQL> insert into t values (2,5,xmltype('<r><i><n>hansi</n><age>22</age></i></r>'))
  2  /
1 row created.
SQL> commit
  2  /
Commit complete.
SQL> select id, att1, i.*
  2    from t,
  3         xmltable
  4         (
  5           '/r/i'
  6           passing xml1
  7           columns
  8           NAME varchar2(20) path 'n',
  9           AGE  varchar2(20) path 'age'
10        ) i
11  /
        ID       ATT1 NAME                 AGE
         1          1 hans                 2
         1          1 peter                99
         1          1 kim
         2          5 hansi                22
SQL>