Replacement of the NULL values to zero to perform an arithmetic operation on column

Similar Questions

• Replace the Null values with zero in MDB

  Hello
  
  How can I replace Null values with zero in MDB. I tried NVL (column_name, 0), he said: syntax error.
  
  Thanks for your time and your help.

  Hello

  In the layer of Buisenss you always use IFNULL (column, 0)

  Concerning
  Adil

  Published by: adil.harrab on April 8, 2011 17:33

• Remove the NULL values and update the value according to the logic

  Hello

  The problem data

  CREATE TABLE VOLA (SRNO, NUMBER, zero

  NUMBER, A

  NUMBER);

  INSERTION of REM in VOLA

  TOGETHER TO DEFINE

  Insert in VOLA (SRNO, ONE) values (1,237.94);

  Insert in VOLA (SRNO, ONE) values (2, null);

  Insert in VOLA (SRNO, ONE) values (3,203.565);

  Insert in VOLA (SRNO, ONE) values (4,170.69);

  Insert in VOLA (SRNO, ONE) values (5,113.67);

  Insert in VOLA (SRNO, ONE) values (6,93.6);

  Insert in VOLA (SRNO, ONE) values (7,82.03);

  Insert in VOLA (SRNO, ONE) values (8,66.675);

  Insert in VOLA (SRNO, ONE) values (9,63.59);

  Insert in VOLA (SRNO, ONE) values (10,61.415);

  Insert in VOLA (SRNO, ONE) values (11,60.015);

  Insert in VOLA (SRNO, ONE) values (12,58.235);

  Insert in VOLA (SRNO, ONE) values (13,57.805);

  Insert in VOLA (SRNO, ONE) values (14,56.965);

  Insert in VOLA (SRNO, ONE) values (15, null);

  Insert in VOLA (SRNO, ONE) values (16, null);

  I have to remove the NULL values in column 1, the problem is that the position of the NULL values are not fixed, and it can be any position. If all the lines of the columns are null, then throw it away.

  If multiple NULL values are here so I have to do the math as follows to update null with the eigenvalues

  1. If the first line is null then take the 2nd value in row and update it.

  2. If the lines between both is null then take avg of prev and next value not null and refresh it.

  3. If the last value in the column is null, then then take prev and update, in this case last two are null, so I have to take value of prev 14 value line update in

  15th and 16th ranks.

  I want to put this pl/sql logic, somehow, that I thought have loop and counter aapproach and loops through the elements and check and update.

  But always looking for something better before looking to write code. No idea or help will be useful for me.

  I * think * you are looking for something like:

  WITH VOLA (SRNO, ONE)

  AS (select 1,237.94 from all the double union)

  Select 2, union null value double all the

  Select 3,203.565 from all the double union

  Select 4,170.69 from all the double union

  Select 5,113.67 from all the double union

  Select 6,93.6 from all the double union

  Select 7,82.03 from all the double union

  Select 8,66.675 from all the double union

  Select 9,63.59 from all the double union

  Select 10,61.415 from all the double union

  Select 11,60.015 from all the double union

  Select 12,58.235 from all the double union

  Select 13,57.805 from all the double union

  Select 14,56.965 from all the double union

  Choose 15, null of union double all the

  SELECT 16, NULL FROM dual)

  GET_VALUES (SELECT SRNO, ONE ACE,

  , LAST_VALUE (WE IGNORE NULLS) (ORDER BY SRNO CSA ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PRECEDING) AS PREVIOUS_VALUE

  , first_VALUE (ONE IGNORE NULLS) over (ORDER OF SRNO CSA ROWS BETWEEN 1 SUITE AND FOLLOWS without TERMINALS) AS NEXT_VALUE

  FROM VOLA)

  SELECT SRNO, ONE, CASE

  WHEN IT IS NOT NULL, THEN WE

  OTHER CASES

  WHEN PREVIOUS_VALUE IS NOT NULL AND IS NOT NULL THEN (PREVIOUS_VALUE + NEXT_VALUE) NEXT_VALUE / 2

  WHEN THE PREVIOUS_VALUE IS NOT NULL, THEN PREVIOUS_VALUE

  WHEN THE NEXT_VALUE IS NOT NULL, THEN NEXT_VALUE

  END

  END AS NEW_VALUE

  OF GET_VALUES

  /

  HTH

• The Null value as the default value for an input to a stored procedure parameter

  Hello
  
  How can we set the default values with the NULL value for the parameter in a stored procedure.
  

  create or replace procedure emp_proc ( p_test_input in varchar2
                                                      p_emp_id in number,
                                                      p_emp_name in varchar2,
                                                     p_manager_id in number )
  as
    begin
     if ( upper ( p_test_input ) = 'I' )
     then
        insert into emp
        values      ( p_emp_id  ,p_emp_name ,p_Manager_id,sysdate );
     elsif ( upper ( p_test_input ) = 'D' )
     then
        delete from emp
        where       emp_id  = p_emp_id;
     else
        dbms_output.put_line
           ( 'Please input ''A'' for ADD or ''D'' Delete  EMPLOYEE'
           );
     end if;
  end;

  As described above if I want to delete only the functioning
  
  I want to call this procedure without pass additional parameters.

   EXECUTE  emp_proc('D',1010);

  Published by: Rede on May 28, 2010 12:21
  
  Published by: Rede on May 28, 2010 12:22

  create or replace procedure emp_proc ( p_test_input in varchar2,
                                                      p_emp_id in number,
                                                      p_emp_name in varchar2 default null,
                                                     p_manager_id in number default null )
  

• where clause to see if they contain the null value

  So I've finalized my function but now am having some problems:
  
  the bl field (or the v_bl parameter) has null values in it. When I run the function using the "Select FH ('ACCESS', NULL, 8675309') From dual; I get a NULL return value because it uses the variable to compare with q.bl and you can not have q.bl = null in a Where clause.
  
  The main problem is when the parameters are passed, a line can have the same prob and site, but the bl might be different as null, which would give a different lname.
  
  
  In where clause I need to have something that will compare the parameter with the bl field. Sometimes it's null sometimes is not, but we need to find the line concerned. I made the "BOLD" in the question police
  
  Here are two possible lines in the data
  prob bl site lname
  ACCESS Smith 8675309 (null)
  54321 8675309 Johnson ACCESS
  
  so in theory, if the function is called with the parameters FH ('ACCESS', NULL, 8675306')
  He would return the lname: Smith
  
  and conversely FH ("ACCESS", "54321 ', 8675309") would return Johnson
  
  Here's the function
  
  create or replace
  Function FH
  (v_prob IN varchar2, v_bl IN varchar2, v_site IN varchar2)
  RETURN varchar2
  AS
  v_lname varchar2 (16);
  
  BEGIN
  
  S.Lname SELECT INTO v_lname
  Of
  request q
  JOIN THE
  s response
  On
  (q.order = s.order)
  
  WHERE
  q.BL = v_bl AND - where it is
  q.site = v_site AND
  q.prob = v_prob AND
  s.Lname IS NOT NULL;
  
  RETURN v_lname;
  END;
  
  
  
  -When I run the FH ('ACCESS', NULL,' 86753) function, it returns an empty value and not the family name
  
  Published by: user11210446 on May 28, 2009 17:03
  
  Published by: user11210446 on May 28, 2009 17:03

  user11210446 wrote:
  If v_bl is Null in the where clause it would even say q.bl = Null which will not work.

  Matches the NULL value
  (1) either you have to say-> q.bl IS NULL
  OR
  (2) WHERE the NVL (q.bl-99) = NVL (v_bl-99) - this will be true if q.bl and v_bl both are NULL
  NULL = NULL evaluates to TRUE, so you use NVL

  SS@XE > select * from dual where null = null ;
  
  no rows selected
  
  SS@XE > select * from dual where null is null ;
  
  D
  -
  X
  
  SS@XE > select * from dual where NVL(null,-1) = NVL(null,-1) ;
  
  D
  -
  X
  

  SS

• PersistentStore.getPersistentObject returns the null value?

  I use a random key to retrieve a shape of the object PersistentStore

  persist is PersistentStore.getPersistentObject (KEY);.

  Works fine on the Simulator (OS 5), when I take the code signed to the device (BB OS 5.0 Bold 8900)

  For some reason, it returns null, without exception. Thereafter any API I inoke on PersistentStore / persist returns null without exception persist even when the null value.

  I don't know if it's one thing to eclipse debugger, but even if the debugger shows that objects are null. Controls null applied in the code seems to fail, what does code see these objects as non-null. Pheww! How is it possible.

  In this code still shows up as null, then safetyTable and orderedkeys. However, the value null check in the failure code.

  At a later stage in the code, when I try to access orderedkeys are null again! Are struggling with this problem for two days, all the pointers would be very comfortable.

                      persist = PersistentStore.getPersistentObject( KEY );
                      persistOrderedKeys = PersistentStore.getPersistentObject(KEY_ORDERED_KEYS);
                      safetyTable = (Hashtable)persist.getContents();
                      orderedKeys = (Vector)persistOrderedKeys.getContents();
                      if (safetyTable == null)
                      {
                          safetyTable = new Hashtable();
  
                          persist.setContents(safetyTable);
                          persist.commit();
                      }
  
                      if (orderedKeys==null)
                      {
                          orderedKeys=new Vector();
  
                          if (safetyTable.size()>0)
                          {
                              Enumeration addressKeys = safetyTable.keys();
                              while(addressKeys.hasMoreElements())
                              {
                                  orderedKeys.addElement((String)addressKeys.nextElement());
                              }
                          }
                          persistOrderedKeys.setContents(orderedKeys);
                          persistOrderedKeys.commit();
  
                      }
  

  "I don't know if it's one thing to eclipse debugger.

  I had problems of this kind when I don't have a level of operating system for the device I am debugging on.

• Add the Null value at the end of the collection layer

  I need to create layers at the end of the index of the layer and not at the beginning. Is this possible?

  app.project.compItem.layers.addNull () puts a layer at the beginning of the collection of objects, but it should be at the end. Maybe I could add the null value, then rearange the index?

  Like this:

  var myNull = myComp.layers.addNull ();

  myNull.moveToEnd ();

  Dan

• calculated formula database field trying to insert the null value

  Hello
  
  I have 3 elements of database text amount, rate and result.
  I enter both values (quantity and frequency), and the property using formula 'result' Gets the computed value.
  On the screen all the values are displayed correctly but when trying to save my information text field 'result' tent to insert the null value.
  
  Any suggestions?
  
  Forms 11g
  
  Thanks in advance

  794018 wrote:
  Hello

  I have 3 elements of database text amount, rate and result.
  I enter both values (quantity and frequency), and the property using formula 'result' Gets the computed value.
  On the screen all the values are displayed correctly but when trying to save my information text field 'result' tent to insert the null value.

  Point formula should not be issue of database. And insert the value in the result column in the database is not good idea.
  Then, if you want to save it. create the database result item and write trigger (When-validate-point) on amount and filed rates and the trigger code, write

  :result:=:amount*:rate;
  

  To display the result on the form, create the database no item and change the formula property and write the formula.

  Hope this will help you

  If someone useful or appropriate, please mark accordingly.

• How to convert the Null value to 0 after the outer join?

  Hello guys
  
  My requirement is in fact 2 of outer join tables (that's how), and I got the outer join works very well, so in my report, I have values null of measures in another table of facts as a result of the outer join...
  
  Is there a way I can convert these nulls to 0?
  
  I realized that the null value is not stored in the table, it is just following the outer join because the NULL do not match records in other... So by default, I'm expected to get NULL values...
  
  Is there way to present these nulls to 0?
  
  Thanks a lot for your advice

  In response, the syntax will be:

  IFNULL (, 0)

  try and let us know how you go.
  See you soon
  Alastair

• Replace the NULL value with some characters

  Hi all
  
  I am writing a query to get the name of the contact and the age of a table. the age column has some value, I want these nulls to be replaced by "N/a".
  I user NVL ("age," n/a ")
  
  but it gives an error
  ORA-01722: invalid number
  
  Please suggest.
  
  Thank you

  Hello

  You must convert the age in tank to be replaced by the string of characters in the case opposite number

  Then use this

  select name, nvl(to_char(age),'N/A') from myage;
  

  Concerning

• Ignoring the Null value or 0 for an average of

  Hello

  I don't code in Java, so I'm having a problem with a form.

  We have a form of training that adds the total of the sides and then is supposed to understand on average.  My problem is that the provided average is based on the average function canned for the field, so it's the calculation of all the fields, including those who have either a Null value or a zero.  Can someone help me with this please?

  By the way.  If the N.O. is checked, the coast is n/a.

  There are also five sections that will total all the sides and will need an average of these totals.

  Thanks in advance.

  Tom

  

  Screenshot taken: 15/03/2013-21:09

  Here's a generic function to calculate the average of a group of non-empty fields.

  This function takes two parameters: an array of domain names at average and a Boolean value specifying if the function should return an empty string if the result was zero.

  function averageFields (fields, blankIfZero) {}

  var total = 0;

  var n = 0;

  for (var i in fields) {}

  var f = this.getField (fields [i]);

  v var = f.valueAsString;

  If {(v)

  total += (+ v);

  n ++ ;

  }

  }

  var returnValue = (n == 0)? ' ': total/n;

  If (blankIfZero & returnValue = 0) returnValue = "";

  return returnValue;

  }

  You can set this function at the level of the document, and then call it as follows (starting a custom calculation script, in this case):

  Event.Value = averageFields (["field1", "Field2", "Field3"], false);

• v ('P101_USERNAME') the null value in the message authentication process

  We hit a problem after the deployment of our application APEX 3.1 on the customer site. The value of v('P101_USERNAME') in our message authentication process is zero on our customer site, but not in our development environment.
  -The two environments are 11.1.0.6 DB with APEX 3.1.0.00.32 on windows.
  -P101 being the default login screen.
  -l' user connects using a custom authentication scheme that ends with success.
  v ('APP_USER') has the correct value (in uppercase)
  -We receive "ERR-10740 unable to perform custom processes post-auth" because an unexpected exception is triggered due to a null user name that we can detect using debugging PL/SQL code.
  -export the application and the source code are the same.
  
  The message authentication process refers to v('P101_USERNAME') which is then transmitted to a couple other processes, including a Web service call and a search function as active directory. The reason why we use it is because it is not transformed to UPPERCASE as with APP_USER - we need spend the exact user name in our post processing of authentication that can be mixed case.
  
  For some reason, it's just no longer works in a different environment - that someone has encountered this problem? I read on a question referring to v ('APP_USER') after a 3.1 update, but it doesn't seem to be a solution.
  
  Any help would be appreciated.
  
  Ian.

  Try to disable the process to clear the cache on the login page. If that contributes to recover at least a process to clear the password element.

  Scott

• update the values, the NULL values by another value

  Hi all

  Item_Id Item_Flag    

  1               Y

  NULL       Y

  
  

  If the Item_id values are like above(1,), will have to update with Item_Id = 2

  
  

  How to do this?

  
  

  Thank you
  

  Update t set item_id = 2 where nvl(item_id,1) = 1

• test for the null value to IN request (null, 'a ', ' b', 'c')

  Hello

  Oracle 10.2.0.4

  I think the following query is incorrect, in my opinion. (there is an index on the collar, but NULL values are ignored?

  SELECT COUNT (*) < table > where col in (null, 'a ', ' b', 'c')

  It works (no errors) and forth fast enough.

  However, I think the correct query would

  SELECT COUNT (*) < table > where IS NULL or neck neck ('a', 'b', 'c')

  It takes a lot of time. As I see it, he performs a table scan for part of the value NULL and use the index for the rest, as the index cannot be used for NULL values.

  I would appreicate an explanation on this matter, particularly why Oracle accepts the first query "where col in (null, 'a ', ' b', 'c')" without any problem.

  Thank you

  A null value is not equal to what whatsoever, not even another null value. This is consistent with the definition of the ANSI. For your first request is not what you think it does, even if it is not syntactically incorrect.

  The second query is correct. If you want to use an index, you must create a bitmap index (which requires Enterprise Edition licenses), because they do not include the values NULL, unlike B * tree index.

• replacement of the same value in a string variable values

  If I have a string:
  
  "%s is %s that I'm talking about."
  
  and - I want to replace the instances with DIFFERENT values %s... What is the best way to do it.
  
  I thought of her analysis in separate using substr and instr chains, but I don't know if that's an exaggeration or not.
  
  Replace is ideal but - it replaces all occurrences of if - you can indicate just replace the first occurrence of a value, and the second with one another (i.e. If the result after replacement of the string above was supposed to be "it's the chain that I'm talking about"
  
  Any help is appreciated.
  
  Thank you

  Hello

  wtlshiers wrote:
  If I have a string:

  "%s is %s that I'm talking about."

  and - I want to replace the instances with DIFFERENT values %s... What is the best way to do it.

  Whenever you have any questions, please post CREATE TABLE and INSERT statements for some examples of data and the results desired from these data.
  Explain how you get these results from these data.
  Always say what version of Oracle you are using (for example, 11.2.0.3.0).
  See the FAQ forum {message identifier: = 9360002}

  I thought of her analysis in separate using substr and instr chains, but I don't know if that's an exaggeration or not.

  Depending on your needs, you may need to do this.

  Replace is ideal but - it replaces all occurrences of if - you can indicate just replace the first occurrence of a value, and the second with one another (i.e. If the result after replacement of the string above was supposed to be "it's the chain that I'm talking about"

  As you say, REPLACE replaces all occurrences. There is no way to say (for example) to change only the first.
  REGEXP_REPLACE, is much more flexible. There is no option for giving a specific occurrence, but you won't even have this feature. You want maybe just something like

  REGEXP_REPLACE ( '%s is the %s I am referring to'
              , '(.*)%s(.*)%s(.*)'
              , '\1This\2string\3'
              )
  

  Depends on your data and your needs.
  Are the new values (e.g. 'This' and 'chain') fixed, or if they can change from one line to the other?
  You will always have 2 (or certain known number) of ' %s in the original string?
  '%' Always report something that needs to be replaced? If not, how can you tell when he does and when it doesn't?
  Of ' always come right after "%"? If this is not the case, what are the possibilities, and what the different characters?