Merge statement: update only when a difference

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• ORA-30926 on MERGE statement, occurs only with PARALLEL, success without PARALLEL hint hint.

  Hi Experts,

  I write under the MERGE statement. In this cardinality of the table_a table_b is 1:2. That is, each record of table_b corresponds to 2 records in table_a based on columns in CLAUSE.

  Well, this query throws below error.

  -Error-

  ORA-12801: error reported in the P011 parallel query server

  ORA-30926: failed to get a stable set of rows in the source tables

  However, the same statement runs successfully what tip PARALLEL is removed altogether. (There are no duplicates in table_b based on unity, group, loc columns.)

  Please sugget if anything look his place here or causes possible.

  -Request-

  MERGE / * + PARALLEL (8) * /.

  IN table_a a

  With the HELP of table_b b

  ON (a.unit = b.unit

  AND a.group = b.group

  AND a.loc = b.loc)

  WHEN MATCHED

  THEN UPDATE

  SET a.u_pushonly = b.u_pushonly

  a.u_seasonind = b.u_seasonind,

  a.eff = BOX

  WHEN b.u_season_start_dt <>TO_DATE('01/01/1970','DD/MM/YYYY')

  OR b.u_season_end_dt <>TO_DATE('01/01/1970','DD/MM/YYYY')

  OR b.u_pushonly = 1

  THEN more GRAND (NVL (b.u_assortment_start_dt, TO_DATE('01/01/1970','DD/MM/YYYY'))

  b.u_season_start_dt)

  Of OTHER NVL (b.u_assortment_start_dt, TO_DATE('01/01/1970','DD/MM/YYYY'))

  END;

  kendenny wrote:

  Fusion requires that columns be unique in both tables. Given that you only update was not insert is not put in correspondence, then you can use a single update statement.

  I don't think so, it requires only NEW data is unique. Informal argument: a single line in the new table can update several lines in the table of old, but you can not use several lines in the new table to update a single row in the old table.

  However, I wonder if something went wrong with the parallelism so that the lines with the same VALUES for the data (old) table_a has been distributed through many slaves, leading to several slaves, trying to update each on the other lines.  (I don't see how this could happen, but it's one of the problems with bugs - if she should not deceive you, it can be difficult to imagine how it's bad).

  To the OP - this sounds like something, you need to trigger an SR for (after a search of MOS).

  Concerning

  Jonathan Lewis

• Firefox I want to find out about the updates only when the ons add that I installed currently become compatible. Is this possible?

  Firefox keeps advising me up-to-date even if a few Add ons are not compatible with the newer version. Although I don't want to be notified when an update is available, I won't update if the add ons are not compatible. Also, advising me update is useless because I will not refresh firefox when all add ons are not compatible.

  Is it possible to put the automatic notification about the availability of updates to appear only when all add ons are compatible?

  You can install this extension to see the information of current compatibility on the subject: addons page.

  • https://addons.Mozilla.org/en-us/Firefox/addon/is-it-compatible/

• change should only be updated only when the value of lov

  Hi experts Adf.

  JDeveloper 11.1.1.4.0

  I have a usecase where a lov and a field date is in a table. Each time, I have a lov selects for the first time, and then save the button. Then change date is get inserted with null. (it's fine).

  Now when I change the existing value of the lov and then clicking on save, then the modified date is updated. (it is also very good).

  Scenario question: suppose that in the first row, WE show dropdown because it is saved in the database and change date as null.

  However when I try to change the value to lov ' sales and do not click Save. Now, once I select IT and clicking record. In this case, change date is updated.

  Idle screenplay: Change Date must be updated if there is no modification.

  

  If (operation == DML_UPDATE) {}

  setModifyDate (newTimestamp (System.currentMillis));

  }

  You can check the value of publication and skip this step if postedValue is newValue.

  See this example: http://adfcodebits.blogspot.com/2010/07/bit-22-using-getpostedattribute-to.html

  Dario

• Merge without updating

  Hi all

  Since the 10g database, we can use MERGE statement without the WHEN MATCHED clause.

  I am looking to ODI to generate that kind of statement, but without success because it allways gives error saying I need a column for update.

  This kind of check/insert statement would be great in a model of Vault!

  Can someone help me please?

  Thank you very much!

  Where is the error? In the designer when you try to run your interface or is the error of Oracle database and reported to the operator?

  If its designer, better to keep some columns checked for updated to keep happy ODI and twist the revenge to handle this:

  I suggest that create you an Option KM, something like "MERGE_UPDATE" - use a checkbox for the values True or False.

  Then, in step of the IKM making the scarf of fusion WHEN matched part here an if / then like this:

  <% if ( odiRef.getOption( "MERGE_UPDATE'" ).equals("1")) { %>

  When matched...

  < %="odiRef.getColList...">

  <% } %>

  Then deform the part of the merge statement code block you want to turn off in external th < %="" et="" %=""> in my example.

  This will be part of the generated code depends on the KM Option so it can be flown by interface.

• Merge statement

  Hi all

  I have a main table and a table of detail (the two are linked by a key (Param_id)).

  I just need to know is possible so that we can insert a record into the child table, whenever we are inserting record to master through a Merge statement.

  When matched

  Update...

  When not matched

  Insert...

  -An entry will be in the Master table, I want to know, is there a command by which I can make the entry in the child table, also

  Is no excuse for a double wire display.

  You have not 'right' to an answer. Respondents are volunteers who are free to choose what threads they meet.

  If someone won't respond to your thread creates a new thread with the same question will not help.

  And when someone mistreats forums by not following the guidelines of the forum makes it just AS likely that people will want to help you.

• Person registering in the Merge statement error!

  Is it possible to save indivudual error in the MERGE statement (Update / Insert).
  I'm unable to save these error. instead of MERGING, if I update the table in the cursor loop then I am able to record the individual error but the process takes time.
  Thanks in advance.
  Deba

  Hi Deba,

  Logging of DML errors:

  SQL> create table tab1 (x number(1));
  
  Table created.
  
  SQL> exec dbms_errlog.create_error_log('tab1')
  
  PL/SQL procedure successfully completed.
  
  SQL>
  SQL> merge into tab1 t
    2        using (select 1 x from dual union all
    3               select 112 x from dual) s
    4  on (t.x = s.x)
    5  when not matched
    6  then insert (x) values (s.x)
    7  log errors into err$_tab1 reject limit unlimited;
  
  1 row merged.
  
  SQL>
  SQL> COL x for 9999
  SQL> select * from tab1;
  
      X
  -----
      1
  
  SQL> COL x for a4
  SQL> select ora_err_number$, X from err$_tab1;
  
  ORA_ERR_NUMBER$ X
  --------------- ----
             1438 112
  
  SQL>
  

  Concerning
  Peter

• How to design a trigger to update only if a column value is changed?

  Hello
  
  I have a nice little trigger that updates the CARD table when the table is updated. This table is updated within a master/detail form. It's the main table.
  Relaxation is used mainly to update the columns 'FICHE_MODIFIEE_PAR' (in English, it means "modified by") and "DATE_MODIFICATION" (in English, it means 'date modified'). I wish that these columns updates ONLY when the values in the columns 'TOTAL_HEURES' and 'TOTAL_HEURES_EXCEPTIONNELLES' are changed. These two columns have a default value for the number 0. That means that these columns change means change it value from the value 0 by default with another value or a value to another value. If the value of one or two of these two columns changes, the trigger must be fired for updating the column 'FICHE_MODIFIEE_PAR' and 'DATE_MODIFICATION '.
  

  create or replace TRIGGER  OBSERVATOIRE.TIB_FICHE
    before insert or update on OBSERVATOIRE.FICHE
    for each row
  begin
      if inserting and :new.fiche_id is null then
          select FICHE_SEQ.NEXTVAL INTO :new.FICHE_ID from dual;
      end if;
      if inserting then
          :new.fiche_cree_par := v('USER');
          :new.date_creation := sysdate;
      end if;
      if updating then
          :new.fiche_modifiee_par := v('USER');
          :new.date_modification := sysdate;
      end if;
  end; 

  Thank you for your help.
  
  Christian

  Hello Christian,.

  You can reference and compare the old and new values. For example
  IF: NEW. TOTAL_HEURES <> : OLD. TOTAL_HEURES OR: NEW. TOTAL_HEURES_EXCEPTIONNELLES <> : OLD. TOTAL_HEURES_EXCEPTIONNELLES
  THEN
  do your stuff
  END IF;

  Greetings,
  Roel

  http://roelhartman.blogspot.com/
  http://www.bloggingaboutoracle.org/
  http://www.Logica.com/

• How is it that some machines running windows vista, when the router is updated or changed, they show "limited or local only" when you reconnect then wireless.

  problems with wireless Vista "local only".

  How is it that some machines running windows vista, when the router is updated or changed, they show "limited or local only" when you then reconnect wireless... nothing else was changed on those computers and other devices can connect ok?

  Hello

  Each router is assigned to the specific address (called IP address or IP address). And each router maintains its own database (called as base of router) to follow the networking devices communicate with him. When the router is changed, the particular router is unable to detect the device, especially the network card to communicate with the computer.  Since he does not have details of the database of network devices, communicate with him.

  • You are able to access the Internet?

  Try the steps mentioned below and check:

  Method 1:

  Step 1: Enable or disable a network adapter and then check:

  http://Windows.Microsoft.com/en-CA/Windows-Vista/enable-or-disable-a-network-adapter

  Step 2: Run Network Diagnostic tool and check:

  Network connection issues: http://Windows.Microsoft.com/en-us/Windows-Vista/troubleshoot-network-connection-problems

  Method 2: Wi - Fi and in Windows network connection issues:

  http://Windows.Microsoft.com/en-us/Windows/help/wired-and-wireless-network-connection-problems-in-Windows

  Reference links:

  Of network connectivity status incorrectly as 'Local' only on a Windows Server 2008 or Windows Vista-based: http://support.microsoft.com/kb/947041

  Setting up a wireless network: http://Windows.Microsoft.com/en-us/Windows-Vista/setting-up-a-wireless-network

  Connection to wireless with Windows Vista: http://technet.microsoft.com/en-us/library/bb878035.aspx

  Hope it works.

• I bought and downloaded Lightroom 6 Lightroom 5.7 update. When I go to install it says that it cannot install because it only works on 64-bit I did not. Is there a 32-bit version as there was in Lightroom 5

  I bought and downloaded Lightroom 6 Lightroom 5.7 update. When I go to install it says that it cannot install because it only works on 64-bit I did not. Is there a 32-bit version as there was in Lightroom 5

  N ° 6 of Lightroom is 64-bit only.

  Update on the OS support for the next Version of Lightroom

• Updates the update only changed columns statement?

  Let's say I TABLE1 with columns ID (2.0), FNAME VARCHAR2 (20), LNAME VARCHAR2 (20), AGE NUMBER (2.0). I insert a new record:
  
  INSERT INTO TABLE1 (ID, FNAME LNAME, AGE) VALUES (1, 'Steve', 'Jobs', 40);
  
  so I say:
  
  Setting a DAY TABLE1 SET FNAME = "Steve", LNAME = "Employment", AGE = 56 WHERE ID = 1;
  
  As you see the value of AGE column is different, but in the UPDATE statement I always put other columns of values. I wonder if Oracle is smart enough to update only the AGE column or it will update all columns?

  I do not think that Oracle performs this check: it simply updates the specified such columns in the SQL statement.

  Here is a 5 year old J. Lewis article that explains why Oracle works this way: http://jonathanlewis.wordpress.com/2007/01/02/superfluous-updates/.

• Calling a function only when the State is active

  I turn to find the event just to call a function only when the status is active. In fact, I created a State to display the 'product details' click and once the system changes to this State - I have to perform a function.
  
  Here's the context:
  
  Let's say that you are on the home page where you will need to click on a product to see details. By clicking on the product, the State to view the details of the product will be activated and a variable inside the new state you will receive all the data (from the class of product). But I discovered Flex run all States at the beginning and we need to watch how declare our function to make sure that we do not have a null to a variable/object reference. Given that value is moving to the State only when the click event to occur, the process of globalization, execution of all States at the beginning will not have any value yet (for the specific product to deal with in the State of the productDetails). So I can't use creationComplete to perform a simple function like setSpecs(), where all the values (for example, width, height, circumference, diameter, price, etc.) will be instiate specific labels.
  
  What event to use to call a function internal once we are in the State? Just using the creationComplet and stated if he check the currentState = that I have to work on is not enough. I tried 'activate', 'show', 'enterStage' and many others, but without success. I tried to search the Internet, but it seems that this problem is not popular enough to generate sufficient results.
  
  But I know that it is possible in the case otherwise it will be is not logical and since Flex work very well with the event, I found the right event. It's something basic I know, but when you do not know, it seems difficult to find! ;-))

  Thanks Greg!

  I agree, this is a better method. So I'll change my SENSITIVITY to use viewStack instead of the State. But the problem persists what that, if we use the viewStack State to launch an event only when the State/viewStack is displayed on the screen.

  I found something that works very well for me: updateComplete.

  First of all, I found this before reading your information about viewStack so it worked very well for the method of the State. That I decided to do a test to viewStack and made the necessary changes to the code to reflect a viewStack navigation and make sure the updateComplete was not within my component (stateProduct.mxml). The system was not able to view the specification as the setSpecs() function was not instantiate when displayed. I added the updateComplete = "{setSpecs ()} ' and everything worked great!" So I conclude that no matter if you are using a viewStack State, the updateComplete event can be used to run or functions only when the component is displayed on the screen.

  Now, I have to make my transition between the State working with viewStack effect! ;-))

  Thanks to Greg for this useful tip!

• insert/update County in the merge statement

  In the Merge statement, we can count the number of inserted rows and updated?
  
  ROWCOUNT SQL % simply returns the number of rows merged.
  
  It does not tell us the separately the line inserted and updated.

  # To insert the rowcount is the number of inserted rows for update is the number of rows updated, for the merger, that's the number of merged lines.

• VLD-2761: A corresponding column cannot be updated in a merge statement

  Help!
  
  I use OWB for the first time. I want to update and insertion of a table of SQL server (source), but I get a warning every time that I have valid mapping. I have the Type of loading as "UPDATE/INSERT" and matched on PK.
  "VLD-2761: impossible to generate the Merge statement."
  
  MERGE statement cannot be generated because the SCHDL_REFNO column is used for correspondence and updating.
  A column cannot be updated in a merge statement.
  
  I use the corresponding PK, but I need the PK inserted if it didn't come out.
  
  Thank you

  I hope that you understand why it worked and how it works rather than make the suggested changes and move forward.

• Return in the MERGE statement clause

  Hello

  I use Oracle 10 g Version

  I tried the code using UPDATE with return Clause & MERGER with return below Clause.

  I have not found ANY error while working with the UPDATE statement. Here is the code with the UPDATE statement

  DECLARE
     TYPE empno_list IS TABLE OF emp.empno%TYPE;
     vempno_list   empno_list;
  BEGIN
        UPDATE emp
           SET comm = 11
         WHERE deptno IN (SELECT deptno FROM dept)
     RETURNING empno
          BULK COLLECT INTO vempno_list;
     FOR i IN vempno_list.FIRST .. vempno_list.LAST
     LOOP
        DBMS_OUTPUT.put_line ('Values of EMP ' || vempno_list (i));
     END LOOP;
  END;   
  

  But PL/SQL error: ORA-00933: SQL not correctly completed command when you work with the MERGE statement

  declare 
   type empno_list  is  table of emp.empno%type;
   vempno_list empno_list;
  begin                
     merge into emp tgt 
        using dept src
          on (src.deptno =tgt.deptno)
          when matched then 
           update set tgt.comm=12
         returning tgt.empno bulk collect into vempno_list ;
         
          for i in vempno_list.first .. vempno_list.last loop
                  dbms_output.put_line('Values of EMP '||vempno_list(i) ) ;
          end loop;
  end;  
  

  Please suggest me

  Probably because BACK IN clause does not belong to the MERGE statement. It is available only for INSERT, UPDATE, and DELETE. Here's the quote from Oracle Documentation:

  The static method RETURNING INTO article belongs to a DELETE , INSERT , or UPDATE statement. The dynamic RETURNING INTO article belongs to a EXECUTE IMMEDIATE statement.

  And here is the link.

  Back IN the Clause

  It will be useful.

  Ishan