Compare Current metric custom with the previous value

Similar Questions

• Compare the value of the column with the previous column and Populate values

  Hi all
  
  
  Please help me to get the required sql
  
  I have a table T1 as example below
  
  Id1 Id2 Column1 Column2
  1 1 name1 null
  1 2 name2 XYZ
  1 3 name3 null
  1 4 name4 abc
  1 5 name5 null
  
  
  
  If the value is null, ishould then fill with the previous value. until he finds a following value.
  The result should be as below
  
  Id1 Id2 Column1 Column2
  1 1 name1 null
  1 2 name2 XYZ
  1 3 name3 XYZ
  1 4 name4 abc
  1 5 abc name5
  
  Please help me to get the required sql
  
  Thanks in advance

  Hello

  Here's one way:

  SELECT    id1
  ,       id2
  ,       column1
  ,       LAST_VALUE (column2  IGNORE NULLS)
                   OVER ( PARTITION BY  id1          -- if needed
                              ORDER BY         id2
                     )        AS column2
  FROM      t1
  ORDER BY  id1, id2                         -- if needed
  ;
  

  I'm guessing only a few things, as what makes a line 'previous' or 'next '.

  I hope that answers your question.
  If not, post a small example of data (CREATE TABLE and only relevant columns, INSERT statements) for all tables and also post the results desired from these data.
  Explain, using specific examples, how you get these results from these data.
  Always tell what version of Oracle you are using. «LAST_VALUE...» IGNORE NULLS"requires that Oracle 10.1 or higher.

• How to compare the new values with the old values in triggers.

  Dear all,
  
  Please tell me how to compare the new values with the old values in triggers.

  Hi, the employee example is in the document. You'd better read yourself.

  CREATE OR REPLACE TRIGGER Print_salary_changes
    BEFORE DELETE OR INSERT OR UPDATE ON Emp_tab
    FOR EACH ROW
  WHEN (new.Empno > 0)
  DECLARE
      sal_diff number;
  BEGIN
      sal_diff  := :new.sal  - :old.sal;
      dbms_output.put('Old salary: ' || :old.sal);
      dbms_output.put('  New salary: ' || :new.sal);
      dbms_output.put_line('  Difference ' || sal_diff);
  END;
  /
  

• When I delete the "screensaverissecure" with the registry value, it reappears again in the registry after I stop and start the system the next day. Help, please

  When I delete the "screensaverissecure" with the registry value, it reappears again in the registry after I stop and start the system the next day. Help, please
  use widows xp

  Hello

   
  1. Have you tried to Hibernate for ever in the power settings option?
   
  To resolve this problem, you can follow the steps below.
   
  (a) click and start
  (b) type power Option in the start search bar.
  (c) now select click Change plan for the current plan of the selected power.
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  (e) scroll down and click on the sign more next to sleep.
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• update to column values (false) in a copy of the same table with the correct values

  Database is 10gr 2 - had a situation last night where someone changed inadvertently values of column on a couple of hundred thousand records with an incorrect value first thing in the morning and never let me know later in the day. My undo retention was not large enough to create a copy of the table as it was 7 hours comes back with a "insert in table_2 select * from table_1 to timestamp...» "query, so I restored the backup previous nights to another machine and it picked up at 07:00 (just before the hour, he made the change), created a dblink since the production database and created a copy of the table of the restored database.
  
  My first thought was to simply update the table of production with the correct values of the correct copy, using something like this:
  
  
  Update mnt.workorders
  Set approvalstat = (select b.approvalstat
  mnt.workorders a, mnt.workorders_copy b
  where a.workordersoi = b.workordersoi)
  where exists (select *)
  mnt.workorders a, mnt.workorders_copy b
  where a.workordersoi = b.workordersoi)
  
  It wasn't the exact syntax, but you get the idea, I wanted to put the incorrect values in x columns in the tables of production with the correct values of the copy of the table of the restored backup. Anyway, it was (or seem to) works, but I look at the process through OEM it was estimated 100 + hours with full table scans, so I killed him. I found myself just inserting (copy) the lines added to the production since the table copy by doing a select statement of the production table where < col_with_datestamp > is > = 07:00, truncate the table of production, then re insert the rows from now to correct the copy.
  
  Do a post-mortem today, I replay the scenario on the copy that I restored, trying to figure out a cleaner, a quicker way to do it, if the need arise again. I went and randomly changed some values in a column number (called "comappstat") in a copy of the table of production, and then thought that I would try the following resets the values of the correct table:
  
  Update (select a.comappstat, b.comappstat
  mnt.workorders a, mnt.workorders_copy b
  where a.workordersoi = b.workordersoi - this is a PK column
  and a.comappstat! = b.comappstat)
  Set b.comappstat = a.comappstat
  
  Although I thought that the syntax is correct, I get an "ORA-00904: 'A'. '. ' COMAPPSTAT': invalid identifier ' to run this, I was trying to guess where the syntax was wrong here, then thought that perhaps having the subquery returns a single line would be cleaner and faster anyway, so I gave up on that and instead tried this:
  
  Update mnt.workorders_copy
  Set comappstat = (select distinct)
  a.comappstat
  mnt.workorders a, mnt.workorders_copy b
  where a.workordersoi = b.workordersoi
  and a.comappstat! = b.comappstat)
  where a.comappstat! = b.comappstat
  and a.workordersoi = b.workordersoi
  
  The subquery executed on its own returns a single value 9, which is the correct value of the column in the table of the prod, and I want to replace the incorrect a '12' (I've updated the copy to change the value of the column comappstat to 12 everywhere where it was 9) However when I run the query again I get this error :
  
  ERROR on line 8:
  ORA-00904: "B". "" WORKORDERSOI ": invalid identifier
  
  First of all, I don't see why the update statement does not work (it's probably obvious, but I'm not)
  
  Secondly, it is the best approach for updating a column (or columns) that are incorrect, with the columns in the same table which are correct, or is there a better way?
  
  I would sooner update the table rather than delete or truncate then re insert, as it was a trigger for insert/update I had to disable it on the notice re and truncate the table unusable a demand so I was re insert.
  
  Thank you

  Hello

  First of all, after post 79, you need to know how to format your code.

  Your last request reads as follows:

  UPDATE
    mnt.workorders_copy
  SET
    comappstat =
    (
      SELECT DISTINCT
        a.comappstat
      FROM
        mnt.workorders a
      , mnt.workorders_copy b
      WHERE
        a.workordersoi    = b.workordersoi
        AND a.comappstat != b.comappstat
    )
  WHERE
    a.comappstat      != b.comappstat
    AND a.workordersoi = b.workordersoi
  

  This will not work for several reasons:
  The sub query allows you to define a and b and outside the breakets you can't refer to a or b.
  There is no link between the mnt.workorders_copy and the the update and the request of void.

  If you do this you should have something like this:

  UPDATE
    mnt.workorders     A      -- THIS IS THE TABLE YOU WANT TO UPDATE
  SET
    A.comappstat =
    (
      SELECT
        B.comappstat
      FROM
        mnt.workorders_copy B   -- THIS IS THE TABLE WITH THE CORRECT (OLD) VALUES
      WHERE
        a.workordersoi    = b.workordersoi      -- THIS MUST BE THE KEY
        AND a.comappstat != b.comappstat
    )
  WHERE
    EXISTS
    (
      SELECT
        B.comappstat
      FROM
        mnt.workorders_copy B
      WHERE
        a.workordersoi    = b.workordersoi      -- THIS MUST BE THE KEY
        AND a.comappstat != b.comappstat
    )
  

  Speed is not so good that you run the query to sub for each row in mnt.workorders
  Note it is condition in where. You need other wise, you will update the unchanged to null values.

  I wouold do it like this:

  UPDATE
    (
      SELECT
        A.workordersoi
        ,A.comappstat
        ,B.comappstat           comappstat_OLD
  
      FROM
        mnt.workorders        A      -- THIS IS THE TABLE YOU WANT TO UPDATE
        ,mnt.workorders_copy  B      -- THIS IS THE TABLE WITH THE CORRECT (OLD) VALUES
  
      WHERE
        a.workordersoi    = b.workordersoi      -- THIS MUST BE THE KEY
        AND a.comappstat != b.comappstat
    ) C
  
  SET
    C.comappstat = comappstat_OLD
  ;
  

  This way you can test the subquery first and know exectly what will be updated.
  This was not a sub query that is executed for each line preformance should be better.

  Kind regards

  Peter

• How to check the previous value of the element in a multi-record block

  Oracle Version: 10 g
  Forms Version: 10 g
  
  Hi all
  Hello everyone, I have a multi-dossier block in a form where one of the values of elements is of LOV.user can select the value of LOV.
  
  If once the user selects the value of LOV and moves to the next of the multi-file record, and selects the value of LOV again, I shouldn't allow users to select the previous value of the user in order to avoid duplication of records.
  
  and important remark is that I should get there before you save it in the database because once registered in the database I can compare the values and hide the previous value.
  
  
  Any help will be appreciated.
  
  
  Thanks and greetings

  This is a question frequently asked in the forum! There are several different solutions. Take a look at the following articles. Both will perform the necessary verification of duplicates.
  Forms - registration of treatment group (value in double check...
  or
  Avoid records duplicated in a block

  If none of these solutions don't work for you, search the forum for other options.

  Hope this helps,
  Craig B-)

  If someone useful or appropriate, please mark accordingly.

• An update on an index column with the same value generates an index to the top

  An update on an index column with the same value generates an update of the index?
  
  
  Thank you

  In addition to my previous answer, see also

  http://orainternals.WordPress.com/2010/11/04/does-an-update-statement-modify-the-row-if-the-update-modifies-the-column-to-same-value/

  Riyaj Shamsudeen has this to say:
  "+ We have an index on this column v1 and we update this column indexed too." Oracle was updating the indexed column? N ° if the values match the level of the indexed column, then the code of RDBMS isn't up-to-date index, a feature for optimization again. Only the row of table is updated, and the index is not updated. + "

  Hemant K Collette

• I just got a new modem (Arris SB6190) and now my Airport Extreme does not connect.  It worked fine with the previous modem (a rented one TWC).  Help!

  I just got a new modem (Arris SB6190) and now my Airport Extreme does not connect.  It worked fine with the previous modem (a rented one TWC).  Help!

  Always recommended to reset the airport back to settings by default and then set up again whenever you have a new modem or change your Internet Service provider.

  Turn off the new modem for at least 30 minutes. More is better.

  Perform a hard reset on the AirPort Extreme, then it turned off.

  Make sure that the Ethernet cable connects the modem to the "O" on the AirPort Extreme WAN port

  After the power of the modem 30 minutes down, turn on the modem and let it run for at least 5 minutes by itself.

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• I have a column with two values, separated by a space, in each line. How to create 2 new columns with the first value in a column, and the second value in another column?

  I have a column with two values, separated by a space, in each line. How do I create 2 new columns with the first value in one column and the second value in another column?

  Add two new columns after than the original with space separated values column.

  

  Select cell B1 and type (or copy and paste it here) the formula:

  = IF (Len (a1) > 0, LEFT (A1, FIND ("", A1) −1), ' ')

  shortcut for this is:

  B1 = if (Len (a1) > 0, LEFT (A1, FIND ("", A1) −1), ' ')

  C1 = if (Len (a1) > 0, Member SUBSTITUTE (A1, B1 & "", ""), "")

  or

  the formula of the C1 could also be:

  = IF (Len (a1) > 0, RIGHT (A1, LEN (A1) −FIND ("", A1)), "")

  Select cells B1 and C1, copy

  Select cells B1 at the end of the C column, paste

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  When I'm on Facebook or a game, it freezes and I have to hit Ctrl alt del, for a response. Within a few seconds more, the same problem occurs. I did not have this problem with the previous version.

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  The problem is when I run the VI for the first time... Everything is good and I got what I need... But when I run it after that... The new results to come out with the results of the first round... So my problem is with the previous results of LEDs and indicators of compensation

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  How Dual boot my windows 8

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  I have recently installed windows 8 developer preview and I need to dual boot my system with the previous version of windows 7, which is already installed on my computer.please me how to Dual boot my system with windows7.i need both versions on my computer suggest.
  Please suggest me a way to dual boot

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• Updated with the hash values column

  Hi all

  I have a requirement to add a column to a table and fill it with the hash values. The table contains an xml column and hash value of this column need to be filled to newly added column. I think that the ora_hash function will not support the xml type column. Just tested with the following script and it works.

  update TBL_COMPONENT_XSL set hash_val = ora_hash((SELECT TCX.COMPONENT_XSL.getStringVal() FROM TBL_COMPONENT_XSL TCX where rownum =1));
  

  can you please suggest me how to fill the column with the hash values.

  SQL> desc TBL_COMPONENT_XSL
   Name                                      Null?    Type
   ----------------------------------------- -------- ----------------------------
   COMPONENT_XSL_ID                          NOT NULL NUMBER(18)
   LINE_OF_BUSINESS                          NOT NULL VARCHAR2(30)
   ORDER_SOURCE                              NOT NULL VARCHAR2(10)
   COMPONENT_NAME                            NOT NULL VARCHAR2(30)
   COMPONENT_SCHEMA_VERSION                  NOT NULL NUMBER(9)
   ACCESS_LEVEL                              NOT NULL VARCHAR2(30)
   COMPONENT_XSL                             NOT NULL SYS.XMLTYPE STORAGE BINARY
   DESCRIPTION                               NOT NULL VARCHAR2(200)
   HASH_VAL                                           NUMBER
  
  

  HASH_VAL is the newly added column.

  Thank you

  Mani

  What happens if you try with:

  update of TCX TBL_COMPONENT_XSL set hash_val = ora_hash (TCX.COMPONENT_XSL.getStringVal ());

  update of TCX TBL_COMPONENT_XSL set hash_val = ora_hash (TCX.COMPONENT_XSL.getClobVal ());

  Index: http://www.orafaq.com/forum/t/70829/

  Concerning

  Girish Sharma

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• I have recently installed Windows 10 free update.  Now I am unable to delete .pdf files and get the invalid error message "Function MS-DOS."  It has never been a problem with the previous Windows 8.1.  I contacted Microsoft technical support and I was tol

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  uninstall any version of acrobat is installed.

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  Restart your computer.

  delete all to delete pdf files.

  If this fails, it is a problem of ms.  If this attempt is successful, then reinstall your acrobat.