Problem with XMLTABLE and LEFT OUTER JOIN

Question

Hi all.
I have one problem with XMLTABLE and LEFT OUTER JOIN, in 11g it returns correct result but in 10g it doesn't, it is trated as INNER JOIN.
SELECT * FROM v$version;
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
"CORE     11.2.0.1.0     Production"
TNS for Linux: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
--test for 11g
CREATE TABLE XML_TEST(
     ID NUMBER(2,0),
     XML XMLTYPE
INSERT INTO XML_TEST
VALUES
     1,
     XMLTYPE
          <msg>
               <data>
                    <fields>
                         <id>g1</id>
                         <dat>data1</dat>
                    </fields>
               </data>
          </msg>
INSERT INTO XML_TEST
VALUES
     2,
     XMLTYPE
          <msg>
               <data>
                    <fields>
                         <id>g2</id>
                         <dat>data2</dat>
                    </fields>
               </data>
          </msg>
INSERT INTO XML_TEST
VALUES
     3,
     XMLTYPE
          <msg>
               <data>
                    <fields>
                         <id>g3</id>
                         <dat>data3</dat>
                    </fields>
                    <fields>
                         <id>g4</id>
                         <dat>data4</dat>
                    </fields>
                    <fields>
                         <dat>data5</dat>
                    </fields>
               </data>
          </msg>
SELECT
     t.id,
     x.dat,
     y.seqno,
     y.id_real
FROM
     xml_test t,
     XMLTABLE
          '/msg/data/fields'
          passing t.xml
          columns
               dat VARCHAR2(10) path 'dat',
               id XMLTYPE path 'id'
     )x LEFT OUTER JOIN
     XMLTABLE
          'id'
          passing x.id
          columns
               seqno FOR ORDINALITY,
               id_real VARCHAR2(30) PATH '.'
     )y ON 1=1
ID     DAT     SEQNO     ID_REAL
1     data1     1     g1
2     data2     1     g2
3     data3     1     g3
3     data4     1     g4
3     data5          Here's everything fine, now the problem:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bi
PL/SQL Release 10.2.0.1.0 - Production
"CORE     10.2.0.1.0     Production"
TNS for HPUX: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
--exactly the same environment as 11g (tables and rows)
SELECT
     t.id,
     x.dat,
     y.seqno,
     y.id_real
FROM
     xml_test t,
     XMLTABLE
          '/msg/data/fields'
          passing t.xml
          columns
               dat VARCHAR2(10) path 'dat',
               id XMLTYPE path 'id'
     )x LEFT OUTER JOIN
     XMLTABLE
          'id'
          passing x.id
          columns
               seqno FOR ORDINALITY,
               id_real VARCHAR2(30) PATH '.'
     )y ON 1=1
ID     DAT     SEQNO     ID_REAL
1     data1     1     g1
2     data2     1     g2
3     data3     1     g3
3     data4     1     g4As you can see in 10g I don't have the last row, it seems that Oracle 10g doesn't recognize the LEFT OUTER JOIN.
Is this a bug?, Metalink says that sometimes we can have an ORA-0600 but in this case there is no error returned, just incorrect results.
Please help.
Regards.

Answer 1

Hi A_Non.
Thanks a lot, I tried with this:
SELECT
     t.id,
     x.dat,
     y.seqno,
     y.id_real
FROM
     xml_test t,
     XMLTABLE
          '/msg/data/fields'
          passing t.xml
          columns
               dat VARCHAR2(10) path 'dat',
               id XMLTYPE path 'id'
     )x,
     XMLTABLE
          'id'
          passing x.id
          columns
               seqno FOR ORDINALITY,
               id_real VARCHAR2(30) PATH '.'
     )(+) y ;And is giving me the complete output.
Thanks again.
Regards.