The difference in performance between wins 8 and win 7.

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• find the difference in days between two dates

  Hello world
  
  I'm trying to find out the difference in days between two dates and the execution of the query that I'm passing
  
  SELECT TO_char(sysdate, 'dd/mm/yyyy') - TO_char('15/11/2011', 'dd/mm/yyyy') DAYS FROM DUAL
  
  the error I get is
  
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  * Cause:
  * Action:
  
  Could someone please help.
  
  Thanks in advance

  user10636796 wrote:
  Hello world

  Thanks a lot for all the replies. I am trying to apply it in a statement to my table like this

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• Unlike COUNTY and the difference in data between 2 sets of data

  Hey guys,.
  I have a question here, probably, it revolves around the UNION, INSERSECT and LESS and maybe something else I'm missing.
  
  I'm two sets of questions, and I have 2 paintings.
  

  select count(student_id) from adhoc_student_table1;
  select count(student_id) from adhoc_student_table2;
  
  select student_id from adhoc_student_table1 order by student_id;
  select student_id from adhoc_student_table2 order by student_id;

  These tables contain data and have been sorted by student_id. I want to find the difference in NUMBER between the first set of SELECT and I want to find a difference in the student ID in the second set to SELECT.
  
  Any ideas? As always, any help is appreciated!

  Hello

  These tables do contain data and have been sorted by student_id. I want to find the difference in COUNT between the first set of SELECT and I want to find a difference in Student IDs in the second set of SELECT.
  

  Hope this helps

  select (select count(student_id) from adhoc_student_table1) -
     (select count(student_id) from adhoc_student_table2) from dual
  
  ---If you want the difference in first table not available in second table.
  
  select student_id from adhoc_student_table1 order by student_id
  minus
  select student_id from adhoc_student_table2 order by student_id
  
  -- or you wanted the difference from both table.
  with tab1 as
  (
     select student_id from
        adhoc_student_table1
  )
  tab2 as
  (
      select student_id from
  adhoc_student_table2
  )
  select * from (select student_id from tab1
                       union select student_id from tab2)
  minus
  select * from (select student_id from tab1
                      intersect select student_id from tab2)
  )
  

  If you could post the input samples and expected, maybe you can get a more valuable solution.

  Concerning
  Anurag Tibrewal.

• Performance between WHERE TO and WHERE OR

  Hi all
  is there a difference in performance between these 2 statements?

  select first_name from employees where first_name in ('Joe', 'King', 'Dan');
  select first_name from employees where first_name ='Joe' or first_name='King' or first_name='Dan';

  Index will make a difference in the execution of the statement?
  
  Kind regards
  Val

  I don't think so.

  Optimizer treats col in (value1), value2 as a clause or.
  It performs an INLIST ITERATOR on time IN cluase and OR the clause.

  For example. See the plan of the explain command. you won't see any difference
  .

  Please see the descriptor information for the two IN and OR query explain plans.

  Both are the same.

  SQL> SELECT * FROM TEST1 WHERE ID IN (1,2,3);
          ID          A          E
  ---------- ---------- ----------
           2          1          3
           2          2          3
           2          3          4
           2          6          7
           2          9         10
  
  5 rows selected.
  
  Execution Plan
  ----------------------------------------------------------
  Plan hash value: 1437791211
  
  ---------------------------------------------------------------------------------------
  | Id  | Operation                    | Name   | Rows  | Bytes | Cost (%CPU)| Time     |
  ---------------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT             |        |     5 |    45 |     2   (0)| 00:00:01 |
  |   1 |  INLIST ITERATOR             |        |       |       |            |          |
  |   2 |   TABLE ACCESS BY INDEX ROWID| TEST1  |     5 |    45 |     2   (0)| 00:00:01 |
  |*  3 |    INDEX RANGE SCAN          | IDCCCC |     5 |       |     1   (0)| 00:00:01 |
  ---------------------------------------------------------------------------------------
  
  Predicate Information (identified by operation id):
  ---------------------------------------------------
  
     3 - access("ID"=1 OR "ID"=2 OR "ID"=3)
  
  Statistics
  ----------------------------------------------------------
            1  recursive calls
            0  db block gets
            6  consistent gets
            0  physical reads
            0  redo size
          585  bytes sent via SQL*Net to client
          396  bytes received via SQL*Net from client
            2  SQL*Net roundtrips to/from client
            0  sorts (memory)
            0  sorts (disk)
            5  rows processed
  
  SQL> SELECT * FROM TEST1 WHERE ID=1 OR ID=2 OR ID=3;
          ID          A          E
  ---------- ---------- ----------
           2          1          3
           2          2          3
           2          3          4
           2          6          7
           2          9         10
  
  5 rows selected.
  
  Execution Plan
  ----------------------------------------------------------
  Plan hash value: 1437791211
  
  ---------------------------------------------------------------------------------------
  | Id  | Operation                    | Name   | Rows  | Bytes | Cost (%CPU)| Time     |
  ---------------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT             |        |     5 |    45 |     2   (0)| 00:00:01 |
  |   1 |  INLIST ITERATOR             |        |       |       |            |          |
  |   2 |   TABLE ACCESS BY INDEX ROWID| TEST1  |     5 |    45 |     2   (0)| 00:00:01 |
  |*  3 |    INDEX RANGE SCAN          | IDCCCC |     5 |       |     1   (0)| 00:00:01 |
  ---------------------------------------------------------------------------------------
  
  Predicate Information (identified by operation id):
  ---------------------------------------------------
  
     3 - access("ID"=1 OR "ID"=2 OR "ID"=3)
  
  Statistics
  ----------------------------------------------------------
            1  recursive calls
            0  db block gets
            6  consistent gets
            0  physical reads
            0  redo size
          585  bytes sent via SQL*Net to client
          396  bytes received via SQL*Net from client
            2  SQL*Net roundtrips to/from client
            0  sorts (memory)
            0  sorts (disk)
            5  rows processed
  

• How to find the difference "within weeks" between two date values?

  Hi all

  Jdev version 11.1.1.7.1

  I used two < af:inputDate > & a < af:inputText > < af:panelFormLayout > components. My requirement is, I want to display the difference of weeks between these two day values in the inputText component when the user clicks the shape.

  Any suggestion would be appreciated.

  Kind regards

  
  

  Novel

  You can use this method to get the number of days between the day and date, and then divided by 7 to get the number of weeks

  public static long getDifferenceDaysBetweenTwoDates (d1, d2 oracle.jbo.domain.Date oracle.jbo.domain.Date)

  {

  If (d1! = null & d2! = null)

  {

  return (d1.getValue () .getTime () - d2.getValue () .getTime ()) / (24 * 60 * 60 * 1000);

  }

  return 0;

  }

  Check - http://sameh-nassar.blogspot.in/2014/10/dealing-with-dates-in-java.html

  Ashish

• Calculate the difference in days between two Dates

  Hello

  I'm trying to understand how to calculate the difference in days between two dates using JavaScript in LiveCycle. (Minimum = JavaScript knowledge)

  Where 'Start_Date' and 'Current_Date' are the names of the two dates in the palette of the hierarchy. (the two Date/time field)

  * Current date is using the object > value > execution property > current Date/time

  I need a text or number field showing the difference in days. (Difference_in_Days)

  I noticed the following code is pretty standard among other responses:

  var

  Start_date = new Date (Start_Date);

  var

  Current_Date = new Date (Current_Date);

  var

  nAgeMilliseconds = Current_Date.getTime) - Start_date.getTime ();

  var

  nMilliSecondsPerYear = 365 * 24 * 60 * 60 * 1000 ;

  I know there is lack of code and code above are may not be not correct.

  Please notify.

  OK, that's because of the way that javascript and works of the calculate event.  The field will be filled with whatever the script resolves at the end of execution. Technically, your script does not have a value because the last thing you do is an assignment to a variable.  Change the last line as follows:

  Math.ABS ((firstDate.getTime)

  ((- secondDate.getTime (()) / (oneDay));

  (eliminate the variable assignment) and get rid of the app.alert.  Your script will "return" (have) regardless of the value of calculation from the East and which will be stored in the field.

• Get the difference in days between 2 dates in Essbase 9.3.1

  How to calculate to get the difference in days between 2 dates in the format day of Essbase 9.3.1.la is 20090101 (yyyymmdd). If 2010907-20100917 = 10 days.
  Start and end dates may extend over several years.

  @DateDiff does not exist in the 9.3.1 I think. With this assumption...

  Could you use the CDF 'Functions of Date'? According to the docs (I've never used it):
  @JdaysOffset - returns the number of days between the firstDate and the secondDate.

  See samplecode.oracle.com for the CDF. Just search for CDF and you will find it on the second page (I think) of the FMCS.

  Or see this thread for another approach that I think the CDF under the covers: Re: Formate Date.

  Of course, you could spend to 11 for DateDiff. :)

  Kind regards

  Cameron Lackpour

• Validate the difference in days between the dates in a table

  Greetings,
  
  I have a tabular form and date on each line. When the user saves the form, I want to sort the rows by chronological order of these dates, then go get the first and last date, calculate the difference between them and validate it.
  
  Does anyone know how to do?
  
  From now on, I came up with this:
  
  1. a PL/SQL Page process "before the calculations and Validations' which creates a collection and inserts lines in my tabular form (p_c004 being the date field):

  begin   
    if apex_collection.collection_exists('UPDATE_DATES') then
      apex_collection.delete_collection('UPDATE_DATES');
    end if;
  
    apex_collection.create_or_truncate_collection('UPDATE_DATES');
  
    for i in 1..apex_application.g_f04.count
    loop
        apex_collection.add_member(
            p_collection_name => 'UPDATE_DATES',
            p_c002            => htmldb_application.g_f02(i),
            p_c003            => htmldb_application.g_f03(i),
            p_c004            => htmldb_application.g_f04(i),
            p_c005            => htmldb_application.g_f05(i),
            p_c006            => htmldb_application.g_f06(i),
            p_c007            => htmldb_application.g_f07(i));
    end loop;
  end;

  and
  
  2. a "PL/SQL Error: Validation

  DECLARE
    l_count NUMBER;
  BEGIN
    apex_collection.sort_members('UPDATE_DATES', 4);
    l_count := apex_collection.collection_member_count('UPDATE_DATES');
  
    SELECT
    to_date(c004(l_count),'DD/MM/YYYY') - to_date(c004(1),'DD/MM/YYYY') Difference 
  
    FROM 
    apex_collections 
  
    WHERE 
    collection_name = 'UPDATE_DATES'
    and to_date(c004(l_count),'DD/MM/YYYY') - to_date(c004(1),'DD/MM/YYYY') < 30;
  
  EXCEPTION
    WHEN NO_DATA_FOUND THEN
      raise_application_error(-20101, 'Error');
  END;

  In my understanding, the validation must sort the collection in chronological order of the dates entered, calculate the difference in days between the nearest and farthest date and return it if it's less than 30 years (the difference in days allowed). If it's more than 30 years, the SELECT statement does not return anything and my block of exceptions raises a custom error that will trigger the validation "process of refusal."
  
  But when I try this, it tells me c004 does not exist and if I drop the parentheses, it works, but of course, it does not give the desired result.
  
  Any ideas?
  
  Best regards
  Mathieu

  Assuming that your domain is c004 then I don't see the need for the sorting of the collection.

  You can write a simple SQL select that sent you the desired result.

  Maybe something like this not tested

  SELECT
    max(to_date(c004,'DD/MM/YYYY')) - min(to_date(c004,'DD/MM/YYYY') ) Difference
    FROM apex_collections
    WHERE collection_name = 'UPDATE_DATES';
  

  The test if the result is > 30 days. If that's what you want to know.