XPATH query behaves differently depending on presence of default namespace

I'm curious to know why an XPATH query seems to behave differently depending on whether the default namespace is present in the query.
My test case is as follows:
I use a table called xml_messages (id number, message xmltype) containing two rows - one where xmlns is specified and the other without.
1. Default namespace is specified:
<?xml version="1.0"?>
<Bereken xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Fout="false" Identifier="21-4-2008 12:55:02" xmlns="http://schemas.myco.nl/services/IPP">
<Reglementen>
<Reglement Ind="21000005" dlnsts="6">
<Producten>
<Product Ind="1002" ogr="27098.00" bbr="27098.00" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="1032" ogr="0" bbr="0" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="1052" ogr="0" bbr="0" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="1062" ogr="0" bbr="2389.968" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="3002" ogr="18968.00" bbr="5690.4" igl="0" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="3032" ogr="0" bbr="0" igl="0" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="3502" ogr="2845.00" bbr="2845.00" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="5002" ogr="3794.00" bbr="3794.00" igl="0" elt="18" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="7502" ogr="0" bbr="0" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="7503" ogr="0" bbr="0" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="8101" ogr="0" bbr="0" igl="65" elt="65" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="7002" ogr="0" bbr="8724.6" igl="65" elt="130" pgs="0" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="7202" ogr="0" bbr="0" igl="65" elt="130" pgs="0" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="7302" ogr="0" bbr="0" igl="65" elt="130" pgs="0" slt="65" plt="0" reg="0" orf="0" />
</Producten>
</Reglement>
</Reglementen>
<Parameters gbtd="1957-12-18T00:00:00.0000000+01:00" gsl="Vrouw" pdr="2008-03-01T00:00:00.0000000+01:00" hdgs="40000" ptp="100" />
</Bereken>
2. No default namespace specified:
<?xml version="1.0"?>
<Bereken xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Fout="false" Identifier="21-4-2008 12:55:02" >
<Reglementen>
<Reglement Ind="21000005" dlnsts="6">
<Producten>
<Product Ind="1002" ogr="27098.00" bbr="27098.00" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="1032" ogr="0" bbr="0" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="1052" ogr="0" bbr="0" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="1062" ogr="0" bbr="2389.968" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="3002" ogr="18968.00" bbr="5690.4" igl="0" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="3032" ogr="0" bbr="0" igl="0" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="3502" ogr="2845.00" bbr="2845.00" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="5002" ogr="3794.00" bbr="3794.00" igl="0" elt="18" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="7502" ogr="0" bbr="0" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="7503" ogr="0" bbr="0" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="8101" ogr="0" bbr="0" igl="65" elt="65" pgs="63758.00" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="7002" ogr="0" bbr="8724.6" igl="65" elt="130" pgs="0" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="7202" ogr="0" bbr="0" igl="65" elt="130" pgs="0" slt="65" plt="0" reg="0" orf="0" />
<Product Ind="7302" ogr="0" bbr="0" igl="65" elt="130" pgs="0" slt="65" plt="0" reg="0" orf="0" />
</Producten>
</Reglement>
</Reglementen>
<Parameters gbtd="1957-12-18T00:00:00.0000000+01:00" gsl="Vrouw" pdr="2008-03-01T00:00:00.0000000+01:00" hdgs="40000" ptp="100" />
</Bereken>
Next, I use the following two queries to get attribute values from the xml messages:
First query using xmlns:
select extractvalue(value(v),'/Product/@Ind' ) ind
, extractvalue(value(v),'/*/@Ind' ) ind2
from xml_messages f
, TABLE(XMLSequence( extract(f.message
     ,'/Bereken/Reglementen/Reglement/Producten/Product'
                              ,'xmlns="http://schemas.myco.nl/services/IPP"'
                              ))) v
where f.id = 1; -- Selects from the xmltype message that does have xmlns specified
This returns (as the first row)
IND IND2
____ 1002
^
|------ Nothing is returned by the XPATH /Product/@Ind
Second without using xmlns
select extractvalue(value(v),'/Product/@Ind' ) ind
, extractvalue(value(v),'/*/@Ind' ) ind2
from xml_messages f
, TABLE(XMLSequence( extract(f.message
     ,'/Bereken/Reglementen/Reglement/Producten/Product'
                              ))) v
where f.id = 2; -- Selects from the xmltype message that has no xmlns
This returns (as the first row)
IND IND2
1002 1002
According to XMLSpy, the correct XPATH to get the "Ind" attribute is "/Product/@Ind" so what I dont understand is why query one doesnt return any data when using a default namespace.
The XPATH "/*/@Ind" works in both cases and can be used as a workaround, but it seems less elegant than using the proper XPATH.
I've tried this test case in 9i and 10g, in sqlplus and TOAD, with the same results in all cases.
Can anyone provide some insight as to why this behavior occurs?

Thanks, A_Non,
adding the third parm to the extractvalue part of the query works.
ie:
select extractvalue(value(v),'/Product/@Ind', 'xmlns="http://schemas.myco.nl/services/IPP"' ) ind
, extractvalue(value(v),'/*/@Ind' ) ind2
from xml_messages f
, TABLE(XMLSequence( extract(f.message
     ,'/Bereken/Reglementen/Reglement/Producten/Product'
                              ,'xmlns="http://schemas.myco.nl/services/IPP"'
                              ))) v
where f.id = 1;
I had not expected this because I thought the xml fragment returned by the extract didnt include the default namespace.
However, when looking at the query in more detail, its clear Oracle automatically includes the xmlns part in the returned xml fragment.
One of the rows in the xml fragment:
<Product xmlns="http://schemas.myco.nl/services/IPP" Ind="1002" ogr="27098.00" bbr="27098.00" igl="65" elt="130" pgs="63758.00" slt="65" plt="0" reg="0" orf="0"/>

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Server code should not be concerned with rendering and formatting of data send to a client.
As for the idea to use a global temp table is ..., well to put it nicely, it smells. Badly.
The single most expensive operation on a database platform is I/O. And now you want to read server data and write it to temporary storage, and the read data from temporary storage to return to the client? What on earth for!? Why purposefully increase the size of the I/O workload? Why decrease performance and undermine scalability?
Provide a proper abstraction interface to the client. Enable it to specify (as simplistically as possible) what it wants ito data. There are a number of ways to design and implement this in PL/SQL. Simplistic example:
SQL> create or replace package Employees as
2
3          EMP_FULL_DETAILS        constant integer := 1;
4          EMP_BASIC_DETAILS       constant integer := 2;
5
6          procedure GetEmpByID(
7                  cur out sys_refcursor,
8                  empID in emp.empno%type,
9                  template in integer default EMP_BASIC_DETAILS
10          );
11
12          procedure GetEmpByName(
13                  cur out sys_refcursor,
14                  empName in emp.ename%type,
15                  template in integer default EMP_BASIC_DETAILS
16          );
17 end;
18 /
Package created.
SQL>
SQL> create or replace package body Employees as
2
3 type TArray is table of varchar2(32767);
4
5 TemplateList       constant TArray :=
6          new TArray(
7                  'EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ',
8                  'EMPNO, ENAME, JOB '
9          );
10
11 procedure GetEmpByID(
12          cur out sys_refcursor,
13          empID in emp.empno%type,
14          template in integer default EMP_BASIC_DETAILS
15 ) is
16          sqlSelect       varchar2(32767);
17 begin
18          sqlSelect :=
19                  'select '||TemplateList(template)||
20                  'from emp where empno = :empID';
21
22          open cur for sqlSelect using empID;
23 end;
24
25 procedure GetEmpByName(
26          cur out sys_refcursor,
27          empName in emp.ename%type,
28          template in integer default EMP_BASIC_DETAILS
29 ) is
30          sqlSelect       varchar2(32767);
31 begin
32          sqlSelect :=
33                  'select '||TemplateList(template)||
34                  'from emp where ename like :empName';
35          open cur for sqlSelect using empName;
36 end;
37
38
39 end;
40 /
Package body created.
SQL>
SQL> var c refcursor
SQL>
SQL> exec Employees.GetEmpByID( :c, 7499 );
PL/SQL procedure successfully completed.
SQL> print c
     EMPNO ENAME      JOB
      7499 ALLEN      SALESMAN
SQL>
SQL> exec Employees.GetEmpByName( :c, 'A%', Employees.EMP_FULL_DETAILS );
PL/SQL procedure successfully completed.
SQL> print c
     EMPNO ENAME      JOB               MGR HIREDATE                   SAL       COMM     DEPTNO
      7499 ALLEN      SALESMAN         7698 1981/02/20 00:00:00       1600        300         30
      7876 ADAMS      CLERK            7788 1987/05/23 00:00:00       1100                    20
SQL>

Same query giving different results

Hi
I m surprised to see the behaviour of oracle. I have two different sessions for same scheema on same server. In both sessions same query returns different results. The query involves some calculations like sum and divisions on number field.
I have imported this data from another server using export / import utility available with 9i server. Before export every thing was going fine. Is there some problem with this utility.
I m using Developer 6i as the front end for my client server application. The behaviour of my application is very surprizing as once it shows the correct data and if I close the screen and reopen, it shows wrong data.
I m really stucked with the abnormal behaviour. Please tell me the possiblities and corrective action for these conditions.
Regards
Asad.

There is nothing uncommitted in both the sessions. But still different results are returned.
I m sending u the exact query and result returned in both sessions.
Session 1:
SQL> rollback;
Rollback complete.
SQL> SELECT CC.CREDIT_HRS,GP.GRADE_PTS
2 FROM GRADE G, COURSE_CODE CC, GRADE_POLICY GP
3 WHERE G.COURSE_CDE=CC.COURSE_CDE
4 AND G.SELECTION_ID=45 AND G.GRADE_TYP=GP.GRADE_TYP
5 AND G.TERM_PROG_ID=17 AND GP.TERM_ID=14
6 /
CREDIT_HRS GRADE_PTS
3 4
4 3.33
4 3.33
3 4
3 4
3 4
3 4
7 rows selected.
SQL>
SESSION 2:
SQL> rollback;
Rollback complete.
SQL> SELECT CC.CREDIT_HRS,GP.GRADE_PTS
2 FROM GRADE G, COURSE_CODE CC, GRADE_POLICY GP
3 WHERE G.COURSE_CDE=CC.COURSE_CDE
4 AND G.SELECTION_ID=45 AND G.GRADE_TYP=GP.GRADE_TYP
5 AND G.TERM_PROG_ID=17 AND GP.TERM_ID=14
6 /
CREDIT_HRS GRADE_PTS
3 4
4 3.33
3 4
3 4
3 4
3 4
6 rows selected.
SQL>
U can see in session 1, seven rows are returned while in session 2 six rows are returned. I have issued a rollback before query to be sure that data in both sessions is same.

Sinlge select query in different schemas for same table(Indentical Structu)

Scenario :
Table XYZ is created in Schema A
After an year, the old data from the previous year would be moved to different schema. However in the other schema the same table name would be used.
For eg
Schema A contains table XYZ with data of 2012 yr
Schema B contains table XYZ with data of 2011 yr
Table XYZ in both the schemas have identical structure.
So can we fire a single select query to read the data from both the tables in effective way.
Eg select * from XYZ where date range between 15-Oct-2011 to 15-Mar-2012.
However the data resides in 2 different schema altogether.

Thanks for the reply
Creating an view is an option.
But my problem, there is ORM layer(either Hibernate or Eclipse Top Link) between the application and the database.
So the queries would be formed by the ORM layer and are not hand generated.
So i cannot use view.
So is there any option that would allow me to use single query on different schema's ?

The same code behaving different in two files.

The same code behaving different in two files.
in pro*c file it is returning rows
in sql file it is not returning any rows.
please suggest me.
regards,
prasad.

please find the code.
sql_stmt := 'SELECT rNum, dpcCode, sID, hDate, fBlock, '||
'lBlock, recQty, fID, fName, ' ||
'tSeqNo, sType, tDate, fStatCode, pDate, recCount, r ' ||
'FROM (SELECT rownum rNum, DPC_CODE_ORIG dpcCode, ' ||
'SENSOR_ID sID, ' ||
'to_char(HEADER_DATE, ''YYYYMMDDHH24MISS'') hDate, ' ||
'FIRST_BLOCK_NUMBER fBlock, ' ||
'LAST_BLOCK_NUMBER lBlock, ' ||
'RECORD_QUANTITY recQty, ' ||
'FILE_ID fID, ' ||
'substr(FILE_NAME,1,30) fName, ' ||
'TRACE_SEQUENCE_NO tSeqNo, ' ||
'SENSOR_TYPE sType, ' ||
'to_char(TRAILER_DATE, ''YYYYMMDDHH24MISS'') tdate, ' ||
'NVL(FILE_STATUS_CODE, ''NL'') fStatCode, ' ||
'to_char(PROCESSED_DATE, ''YYYYMMDDHH24MISS'') pDate, '||
'NVL(RECIRCULATE_COUNT,0) recCount, ' ||
'ROW_NUMBER() ' ||
'OVER(ORDER BY TRAILER_DATE DESC, LAST_BLOCK_NUMBER DESC) r ' ||
'FROM logfc10t ' ||
'WHERE DPC_CODE_ORIG = :IN_DPC_CODE ' ||
'AND SENSOR_ID = :IN_SENSOR_ID ' ||
'AND (((TRAILER_DATE <= TO_DATE(:IN_TRAILER_DATE, ''YYYYMMDDHH24MISS''))' ||
' AND (LAST_BLOCK_NUMBER < :IN_BLOCK_NUMBER)) ' ||
' OR (TRAILER_DATE < TO_DATE(:IN_TRAILER_DATE, ''YYYYMMDDHH24MISS'')))) ' ||
'WHERE r = 1 ';

Pdf duplication in Preview for Mac behaving differently

When duplicating a PDF in Preview for Mac, a new image window would open that I could click on to select, then rename and save elsewhere. Just recently, seems like in the last few days, Preview now behaves differently. Now when I select duplicate, a duplicate document is created in the same window but shows as a thumbnail in the sidebar. This is confusing as it appears that Preview is trying to create a duplicate of the document at the end of the original. I don't appear to have received any updates from Apple that would account for this sudden change in behaviour (shows Preview last modified 18th November). I don't appear to be able to change this in Preview's Preferences. Can I revert Preview to the previous behaviour? (I'm using latest version of Preview in Yosemite on a 24" iMac).

I always find that Preview can garble certain graphic elements or even slightly alter the over-all color of the PDF. However, I also find it is a lot quicker to deal with PDFs, especially when it comes to printing. Sometimes I get a PDF that I send to print on our Canon copier and I end up canceling the print job after 10-15 minutes because it's still processing. I open that same PDF in Preview and it prints in less than a minute. The same can be said of InDesign so on certain jobs I end up exporting as a PDF and printing from Preview. This might say a lot about Adobe's Printing Engine... (sorry, off-topic)

Variable Picker generates invalid XPath query

This one seems to be a bug:
When declaring a variable of type "element" (not "messageType") and accessing the variable with the Variable Picker from within the assign assistant, i.e. the following line ist generated:
bpws:getVariableData("testVar","","/tns:TaskMgrTestCaseRequest/tns:input")
The BPEL process can be validated and deployed without an error.
At runtime the following exception is generated:
XPath expression failed to execute.
Error while processing xpath expression, the expression is "bpws:getVariableData("testVar", "", "/tns:TaskMgrTestCaseRequest/tns:input")", the reason is XPath expression failed to execute.
Error while processing xpath expression, the expression is "", the reason is Unexpected ''.
Please verify the xpath query.
Please verify the xpath query.
When working with variables of type messageType, there is no problem. (So I declared a messageType to each element type ...)
Wolfgang

Thanks for the heads up. We will try to kill this bug in the 0.97 release. -Edwin

Why Reports format behaves different in Excel and browser(if desformat=html or pdf)?

1-Why Reports format behaves different in Excel and browser(if desformat=html or pdf)?
2-I made three queries Q1,Q2 & Q3 and linked them with proper field links but suppose Q3 returns no records for some Q1&Q2 records & when the report runs for delimited options it reflects only those records as output for which all the queries return records(if Q3 returns no record then the related records from queries Q1,Q2 don't reflect) while the output in desformat=html or pdf is ok..
can you please resolve my problems
( I have installed patch 5a in my report server machine)
Thanks & Regds.
Suneel
null

What do you mean by "different"? (In our
experience, Oracle html output has too many
columns, which are not visible in the
browser but are obvious in Excel.)
We build our own html programmatically, so
that Excel matches the browser more closely.
-- Allan Plumb

XPATH query behaves differently depending on presence of default namespace

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