Variable set to NULL Query

I'm working on a procedure that is using the workflow Oracle EBS application for approval.

It has been customized by a contractor in the past, but we need to make some changes to it.

I declared a new variable of number:
l_req_doc_id               NUMBER :=0;
The value of the variable l_req_doc_id is set via this SQL:
      SELECT DISTINCT requisition_header_id
               INTO l_req_doc_id
               FROM po.po_requisition_lines_all prla
                  , ap.ap_suppliers pv
                  , ap.ap_supplier_sites_all pvsa
                  , po.po_line_locations_all plla                   
                  , po.po_lines_all pla                                          
              WHERE prla.vendor_id = pv.vendor_id
                AND prla.vendor_site_id = pvsa.vendor_site_id
                AND pv.vendor_id = pvsa.vendor_id
                AND prla.line_location_id = plla.line_location_id   
                AND plla.po_line_id = pla.po_line_id                
                AND pla.po_header_id = l_document_id;
We hit a scenario where some applications are triggered when the value of vendor_site_id on the command line is NULL.

When this happens, the SQL above will return no rows.

I wanted to check here if, after his return any rows, SQL will change the value of l_req_doc_id from zero to NULL or would remain at zero when the SQL returns no rows?

I know it's a silly question, and I could just write some debug statements in the code that works. Unfortunately the complexity of the code, that debugging statements don't always trigger in the way that I expect.

Any advice much appreciated.

Thank you

20100511 wrote:
I know it's a silly question, and I could just write some debug statements in the code that works. Unfortunately the complexity of the code, that debugging statements don't always trigger in the way that I expect.

It is pure laziness on your part.
You could easily create a sample test case to understand behaviour like this

SQL> ed
Wrote file afiedt.buf

  1  declare
  2      l_num number := 0;
  3  begin
  4      dbms_output.Put_line('Before Select '||l_num);
  5      select 1 into l_num from dual where  1 = 2;
  6  exception
  7      when no_data_found then
  8        dbms_output.Put_line('After Select '||l_num);
  9* end;
 10  /
Before Select 0
After Select 0

PL/SQL procedure successfully completed.

Tags: Database

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    It's using a variable binding:

    lv_query VARCHAR2 (15000): = ' 'year', SELECT ename from emp where deptno =: 1';

    Then, the variable may be correctly bound (by post) via the USING clause.

  • lov automatic setting of null at the click of a button.

    Hi Experts ADF,

    JDeveloper 12.1.3.0.0

    I have a read-only VO as below which is dragged as a selectone choice. Do autosubmit = 'true '. I also have a valueChangeListener. In the valueChangeListner value, I'll put in an instance variable.

    And I have an Add button that partial shipment is set to true. But when the click on the Add button, inside actionListener, I get the value null for the instance variable.

    When I select a value, select a choice, I am able to see the value of valueChangeListener. The valueChangeListener inside I'll highlight selectedValue = valueChangeEvent.getNewValue;

    After I click on the Add button, in the actionListener I get selectedValue as null.

    Note: -.

    selectedValue is a variable instance with the getter and setter.

    The taskflow scope is backingbeanscope.

    Read only Vo:-select DepartmentId, DepartmentName from departments dragged like a selectonechoice.

    Thank you

    Roy

    Instead of the instance variable, save the value of the variable def page, as described here:

    http://andrejusb.blogspot.com/2011/10/page-definition-variables-to-store.html

    on this path, the value will survive another request

  • How not to display variable binding in the query ADF search panel?

    Hello, I use JDeveloper 11.1.2.3.0.

    I have a variable binding in my VO, (* required) that I use in the sql query. I put the value of this variable to link through the groovy expression so I don't have to manually put through my page. It works fine but the problem is that it appears in the query ADF Panel that I created in my page. To do this, I created a ViewCriteria and I've specified to display only 3 (other) fields for the simple search. Apart from the selected 3 variable bind shows here again because its value is set. I tried to remove the ' * required ' of the variable binding in the original Version, but in this case I have problems with my sql query.

    Does anyone know how this variable is not to display in the Panel request ADF?

    Thank you

    Has tried to define the binding to bee hidden variable?

    Controll tips, hint of display = hide

  • Problem with variable setting after some validation in RTF

    Hi all

    I have a requiremnt to set a variable value after some validation in RTF, I tried using the way below.

    ? xdofx:if (($p_email n'est pas null ou $p_fax n'est pas null) and $p_ver is null and S_C = 'ABC')? >
    <? xdoxslt:set_variable($_XDOCTX,'SC','LIST_PRI')? > <? end if? >

    Well, I need to set the 'SC' variable with the value "LIST_PRI" once the above if condition satisfied. then I tried to get the value as below:

    <? If: xdoxslt:get_variable($_XDOCTX,_'SC') = 'LIST_PRI? ' > <? L? > <? end if? >

    But it does not work with education and set_variable instruction, if you please help me on this

    Thank you

    Change the code as follows and give it a try.


    Or send the xml and RTF file to bipuser@gmail and I'll take a look. Update this thread to let me know if you sent me the files.

    Thank you
    Bipuser

  • How to pass variables bind to select query

    Hello
    I use jdeveloper 11.1.1.6.0 version.
    My use case is - I want to change the settings of the select clause dynamically
    For example
    My view of object query is as follows:
        SELECT FN_GET_ALFA_MESSAGE_DETAIL_SEQ(1,2) FROM DUAL
  
    where FN_GET_ALFA_MESSAGE_DETAIL_SEQ is the name of function.
    I want to pass parameters at runtime instead of 1 and 2 as a and b.
    So, how can I pass dynamic parameters (bind variables) in the display object during execution of the select clause.

    Published by: 925410 on January 7, 2013 18:25

    Hello

    You may have two bind variables (note that bind variables are always preceded by a colon in the query) as below:

    SELECT FN_GET_ALFA_MESSAGE_DETAIL_SEQ(:bind_var1,:bind_var2) FROM DUAL

    Then, follow the following steps:
    1. create two variables of the same names liaison in the variables section of Bind in the query tab of the VO
    2 2 disposer have a method in the class Impl of Module of the Application and within this method, pass the values of these bind variables as below:

                Impl vo = null;
            vo = get1();
            vo.setNamedWhereClauseParam("bind_var1", );
            vo.setNamedWhereClauseParam("bind_var2", );
            vo.executeQuery();

    3 expose this method of the the module interface of the client Application, then the method will be visible in the section data when updating controls.
    4 use the method to run the original Version of data controls you want :)

    Kind regards
    Seddik

  • the variable name of database query to SQL Server using the Oracle database link

    Hi all

    I have an ApEx 4.1 application running on x 64 (11.2.0.1) 11g on Windows Server 2008 x 64, and I have a few points of data integration with SQL (2005 and 2008) server that I need to create. I have configured the database with dg4odbc link and it works perfectly... I can run queries on the SQL Server database without any problem using the database link.

    However, there is a scenario where the SQL Server database name is dynamic, and I need to generate on the fly in a PL/SQL block and then use it in a query dynamic SQL (all this in the ApEx). It of wherever I meet problems... when I asked the default database that is based on the ODBC connection and I don't have to specify the name of the database, no problem. But when I need access to one of the several other databases by default, I received the error "invalid table.

    It works well:* (note that 'fv' is the name of my database link)

    v_query1: = "select 'Release Date' from dbo." Schedules@FV where dbo. Annexes. "" SchedID "=: calendar";
    EXECUTE IMMEDIATE v_query1 in rel_date using the grid.




    I then take this rel_date variable, convert a varchar2 (rel_date_char), then use it as the name of the database in the following query...


    _ It returns an error(error ORA-00903: invalid table name)

    v_query2: = "select"PARTNO": rel_date_char.dbo.ProdDetails@fv where 'SchedID' =: calendar and"UnitID"=: unit"
    and 'MasterKey' =: master and "ParentKey" =: parent';

    EXECUTE IMMEDIATE v_query2 in part_number using planning, master, parent unit;



    I also tried using all of the following conditions without result:

    "select"PARTNO"of" | : rel_date_char | '.dbo. ProdDetails@fv where 'SchedID '...
    "select"PARTNO"of" | rel_date_char | '.dbo. ProdDetails@fv where 'SchedID '...
    "select"PARTNO"of" | @rel_date_char | '.dbo. ProdDetails@fv where 'SchedID '...
    "select"PARTNO"in @rel_date_char.dbo.ProdDetails @fv where 'SchedID'..."


    Is it possible to do it in PL/SQL?

    Thanks for any help!
    -Ian C.

    Published by: 946532 on July 15, 2012 19:45

    Just did a test using passthrough:

    SQL > set serveroutput on
    SQL > declare
    2 val varchar2 (100);
    3 c whole;
    4 whole nr;
    5. start
    c: 6 = dbms_hs_passthrough.open_cursor@FREETDS_DG4ODBC_EMGTW_11_2_0_3;
    7 dbms_hs_passthrough.parse@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c, "select count (*) from EMP");
    8 LOOP
    9 nr: = DBMS_Hs_Passthrough.fetch_row@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c);
    10 output when nr = 0;
    11 dbms_hs_passthrough.get_value@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c, 1, val);
    12 dbms_output.put_line (val);
    13 end of loop;
    14 dbms_hs_passthrough.close_cursor@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c);
    15 end;
    16.
    24576

    PL/SQL procedure successfully completed.

    SQL > declare
    2 val varchar2 (100);
    3 c whole;
    4 whole nr;
    5. start
    c: 6 = dbms_hs_passthrough.open_cursor@FREETDS_DG4ODBC_EMGTW_11_2_0_3;
    7 dbms_hs_passthrough.parse@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c, ' select count (*) from dbo.) EMP');
    8 LOOP
    9 nr: = DBMS_Hs_Passthrough.fetch_row@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c);
    10 output when nr = 0;
    11 dbms_hs_passthrough.get_value@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c, 1, val);
    12 dbms_output.put_line (val);
    13 end of loop;
    14 dbms_hs_passthrough.close_cursor@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c);
    15 end;
    16.
    24576

    PL/SQL procedure successfully completed.

    So all 3 ways work for me.

    Published by: kgronau on July 23, 2012 10:08

    Now, using the variables to make the selection:

    SQL > declare
    2 val varchar2 (100);
    3 c whole;
    4 whole nr;
    5 tabname varchar2 (20): = 'EMP ';
    6 ownr varchar2 (20): = "dbo."
    7 dbname varchar2 (20): = "door";
    Start 8
    c: 9 = dbms_hs_passthrough.open_cursor@FREETDS_DG4ODBC_EMGTW_11_2_0_3;
    10 dbms_hs_passthrough.parse@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c, ' SELECT count (*) FROM ': dbname: '.) ' || ownr | '.'|| tabname | ") ;
    11 LOOP
    12 nr: = DBMS_Hs_Passthrough.fetch_row@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c);
    13 when the exit nr = 0;
    14 dbms_hs_passthrough.get_value@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c, 1, val);
    15 dbms_output.put_line (val);
    16 end loop;
    17 dbms_hs_passthrough.close_cursor@FREETDS_DG4ODBC_EMGTW_11_2_0_3 (c);
    18 end;
    19.
    24576

    PL/SQL procedure successfully completed.

    => instead of executing the statement using the "execute Immediate" we use the PASTHROUGH package to pass the statement to SQL Server.

    Published by: kgronau on July 23, 2012 10:10

  • ADF BC to SQL Server connection with variable set to View object

    Hello world

    I develop a BPM Application using Oracle BPM 11.1.1.5.0 and JDeveloper 11.1.1.5.0

    Following the thread of the link below, since it is a new topic, I decided to open a new thread.

    Re: ADF method call to extract data from DB before loading the page from the initiator

    what I try to do is to get a record from a database and show to the user on the initiator of the UI using ADF BC and not the database adapter.
    I have worked with ADF BC and display objects to get all the lines and show them to the user in a table.

    However, when I try to run the same query in the parameterized shape just return a single line, I hit a wall.
    In short, my problem is like this:

    I have an Application Module which has an entity object and a display object.
    My database is SQL Server 2008.
    When I try to create a new read only view object to return a single line I face the problem.
    The query that I have in the section my display object query is like this:
    select *
from dbo.Employee
where EmployeeCode= 99
    which works very well.
    However when I set a variable input_code, linking for example and change the query as follows it won't validate.
    select *
from dbo.Employee
where EmployeeCode= :input_code
    He just telling me
    >
    incorrect syntax near ': '.
    >
    I don't know if this has to do with my Oracle DB is not or I'm doing something wrong.
    Can someone help me with this you problem?

    Thanks in advance

    The problem is that you are using 'Oracle named' style for the binding of parameter in the SQL statement. However, this style of binding is specific Oracle. You must use "Positional JDBC" style of binding with MS SQL Server:

    select *
from dbo.Employee
where EmployeeCode= ?

    (The style of binding is specified in the query to the dialog box Definition VO Editor pane).

    If you specify the positional style of binding "JDBC", another field called 'Linking the Positions' will appear in the definitions pane variables bind VO. You will be able to specify it is the position of the particular parameter in the binding variable VO query bound to. (the position of the bond index is 0-based).

    Dimitar

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