limiting the number of rows in a query retrieves

Similar Questions

• The number of rows that can be retrieved in the Discoverer report

  Hi all
  
  Is there a maximum limit on the number of lines that can be retrieved in the Scout report.
  
  Kind regards
  Ankur

  Hi John,.

  "Is there an upper limit for the number of records retrieved by discoverer?

  There is no upper limit for the extraction of the records. IF you count very well systems you can do millions and billions. I don't so much think that those millions will be retrieved, if so recovered it will give you memory.

  go to the query governor, and to restrict the DataSet to retrieve any value as millions or billions.

  I hope this helps you!

  Best wishes
  Murielle.

• Calculation of the number of rows in the query object

  Hi all
  I have a question:
  
  Is there a way to get the number of rows in a query object without running it twice?
  I need this for a calculation of total pages.
  I can't do something like:
  "SELECT COUNT (e) FROM employee e"
  because I have a WHERE clause in my expression.
  
  Thank you

  I don't think I've had this a simple that you would like to, but I was able to reuse the same query named to account real pagination queries request.

  I defined a named query:

          @NamedQuery(name = "Employee.findByNames", query = "select e from Employee e WHERE e.firstName LIKE :FNAME AND e.lastName LIKE :LNAME AND e.gender = :GENDER ORDER BY e.lastName, e.firstName")
  

  Now in the app, I can create an instance of the query for this named query and fill in the parameters using the:

          Query query = em.createNamedQuery("Employee.findByNames");
          query.setParameter("FNAME", "%");
          query.setParameter("LNAME", "%");
          query.setParameter("GENDER", "M");
  

  If I run this query I get all the lines, but instead, I'd like to create an account using the underlying native API query

          ReadAllQuery raq = JpaHelper.getReadAllQuery(query);
          ReportQuery reportQuery = new ReportQuery(raq.getReferenceClass(), new ExpressionBuilder());
          reportQuery.setSelectionCriteria(raq.getSelectionCriteria());
          reportQuery.setOrderByExpressions(raq.getOrderByExpressions());
          reportQuery.setShouldReturnSingleValue(true);
          reportQuery.addCount();
          Query countQuery = JpaHelper.createQuery(reportQuery, em);
  
          countQuery.setParameter("FNAME", "%");
          countQuery.setParameter("LNAME", "%");
          countQuery.setParameter("GENDER", "M");
  
          int count = ((Number)countQuery.getSingleResult()).intValue();
  

  Then, for each page of entities wanted the original query is executed as:

          query.setFirstResult(0);
          query.setMaxResults(5);
          List emps = query.getResultList();
  

  Doug

• Limit the number of rows retrieved

  We have the need to limit the number of rows retrieved in a table for some users.
  
  We tried to put this by adding a policy that limits the number of rows. Here is the code:
  
  
  create or replace function
  usu01_access_policy
  (obj_schema varchar2, obj_name varchar2) return varchar2
  is
  d_predicate varchar2 (2000);
  Start
  If the user = "PEPE01" then
  d_predicate: =.
  "rownum < 11';
  on the other
  d_predicate: =.
  ' 1 = 1' ;
  end if;
  Return d_predicate;
  end;
  
  This code works well when you query the table like this:
  
  Select * from usu01;
  
  the number of rows retrieved is 10.
  
  But when we define a clause 'where' the query does clause 10 recovered lines before, getting only the lines of the first 10 with the condition 'where' = true.
  
  Is there a way to limit the number of retrieved rows from a table, but by first applying the 'where' clause to the whole table and later the ' rownum < limit ' condition?
  
  Thank you

  Why do you limit the number of lines of output? It is a customer number, not a database problem, I would say.
  Which should be resolved within the query itself. Using rownum without orderly subquery also return different results on each run.
  Take a look here for top - N query: http://www.oracle.com/technetwork/issue-archive/2007/07-jan/o17asktom-093877.html

  Nicolas.

• Displays the number of rows in the table displaying a named criteria query data

  I created a test named for my View, called 'Criteria1' and Criteria1 to create a group of ADF with Table query. I want to display the number of rows in result when a search is performed. How can I do?
  
  Thanks in advance,
  Tom

  As mentioned, you can add outputText and you must give OutputText partialTriggers as query component your Id. Thus, when you give a search on the query component, it will refresh the outputText with the number of lines.

  
  ID = "ot1" partialTriggers = "id of the component of motion here" / > ""

• How to limit the number of rows returned in a query

  Hi friends,
  I want to limit the number of rows returned by my request to some 10 lines. How to do this. When I try to make some 6 rows with the rownum < 10 its giving results for a particular Department and that too only... btw I'm bundling my table and includes much a table joins and will order the results of the table by a column... How to do this...

  Run it:

  select * from (your query goes here) where rownum < 10
  

  Nicolas.

• to check the number of rows affected by an update query in a procedure

  Hello
  I want to check the number of rows affected by the update script that I used in a procedure and I shoud be able to use this count towards the end of the procedure.
  How can I do?
  
  for example:
  create or replace procedure p1 is
  Start
  Update table1 set x = 'a', where y = 'b ';.
  end p1;
  
  Published by: christele CS on May 1, 2012 22:06

  Hello

  Try the below a...

  create or replace procedure p1 is
  Start
  Update table1 set x = 'a', where y = 'b ';.
  dbms_output.put_line (SQL % ROWCOUNT |) ("Lines updated ');
  end p1;

• Get the number of rows in the oracle table

  Hi all
  I want to get the total number of rows in the sql to the appmodule table.
  After you apply the criteria to view some on the view object. If he try with getallrowsinrange the number of rows found within the viewobject was but I want a total number of rows in the sql table.
  
  How can I get that
  
  I use jdev 11.1.1.5
  
  Thanks in advance

  I threw something together, quick and dirty, don't hesitate to optimize.

  Assuming you want the County table, I put the code in a subclass of EntityDefImpl since it is representing a table in the middle tier.

  public class EmpDefImpl
        extends EntityDefImpl {
    /**
     * This is the default constructor (do not remove).
     */
    public EmpDefImpl( ) {}
  
    //~ Methods ****************************************************************************
  
    public long getTableRowCount( DBTransaction transaction ) {
      String query = getQuery( );
      String countQuery = String.format( "SELECT COUNT(*) FROM (%s)", query );
      long count = 0;
  
      ViewObject vo = transaction.createViewObjectFromQueryStmt( countQuery );
  
      try {
        vo.executeQuery( );
  
        Row row = vo.first( );
        Number number = (Number)row.getAttribute( 0 );
        count = number.longValue( );
      } finally {
        vo.remove( );
      }
  
      return count;
    }
  }
  

  Depending on your card type, you may not get an oracle.jbo.domain.Number, but something else, so the cast may need correction.

  Usage example:

  public class EmpEditViewImpl extends ViewObjectImpl {
    public EmpEditViewImpl() {
    }
  
    protected void executeQueryForCollection( Object object, Object[] object2, int i ) {
      super.executeQueryForCollection( object, object2, i );
  
      EmpDefImpl def = ( EmpDefImpl )getEntityDef( 0 );
      long tableRowCount = def.getTableRowCount( getDBTransaction() ) );
  
      // Do something with it
    }
  }
  

  As you can see, the code is fairly generic. Also, you might be able to put this in a base extension ADF class.

  Sascha

  Published by: Sascha Herrmann on June 7, 2012 14:39

• Count the number of rows returned from each view in USER_VIEWS

  For each USER_VIEWS view, I would return the name, creation date, last modified dateand the number of rows returned by this view.
  
  Here's what I have so far:
  

  col object_name format a20
  select 
  object_name, 
  created, 
  last_ddl_time
  from user_objects
  where object_type = 'VIEW'

  Returns:
  

  OBJECT_NAME          CREATED   LAST_DDL_TIME
  -------------------- --------- -------------
  AISLE_AVG            11-FEB-12 11-FEB-12     
  COURSE_AVG           11-FEB-12 20-FEB-12     
  EXE_12_VIEW          11-FEB-12 21-FEB-12     
  L1_P2                17-FEB-12 17-FEB-12     
  L1_P3                17-FEB-12 17-FEB-12     
  L1_P4                17-FEB-12 17-FEB-12     
  L1_P5A               17-FEB-12 17-FEB-12     
  L1_P5B               17-FEB-12 17-FEB-12     
  LAB3_1A              12-FEB-12 20-FEB-12     
  LAB3_1B              12-FEB-12 20-FEB-12     
  LAB3_2A              12-FEB-12 20-FEB-12     
  LAB3_2B              12-FEB-12 20-FEB-12     
  LAB5_1               19-FEB-12 19-FEB-12     
  LAB5_2               19-FEB-12 19-FEB-12     
  LAB5_3               19-FEB-12 19-FEB-12     
  LAB5_4               19-FEB-12 19-FEB-12     
  LAB5_5               19-FEB-12 19-FEB-12     
  LAB5_TIMES           19-FEB-12 19-FEB-12     
  LAB6_1               19-FEB-12 19-FEB-12     
  LAB7_VIEW            20-FEB-12 20-FEB-12     
  PROGRAMS             11-FEB-12 21-FEB-12     
  STUDENT_GPA          11-FEB-12 21-FEB-12     
  
   22 rows selected 

  How can I add a last column that counts the number of rows returned by this view?
  
  EDIT - here is a dump of my paintings, and here are my views.
  
  Edit2 - this is possible by using the DECODE function, by chance?

  The function...

  CREATE OR REPLACE FUNCTION view_row_count (view_name VARCHAR2)
  RETURN NUMBER
  AS
  retval NUMBER;
  BEGIN
  EXECUTE IMMEDIATE
  'select count(*) from '||view_name INTO retval;
  RETURN retval;
  END view_row_count;
  /
  

  And now the query...

  select
  object_name,
  created,
  last_ddl_time,
  view_row_count(object_name) as view_row_count
  from user_objects
  where object_type = 'VIEW'
  

• Count the number of rows in each table

  I have a list of table names, how to write a query to find out the number of rows in each table.
  
  Select the table table_name from all_tables where owner = 'XXX' and num_row > 100
  or
  Select the table table_name from all_tables where owner = 'XXX' and sample_size > 100
  
  
  isn't quite working.
  Why?
  
  Thanks in advance,
  
  Published by: mpt_fz on January 12, 2010 12:06

  In recent versions of the db (11g):

  SQL> select table_name, column_value cnt
    from user_tables, xmltable (('count(ora:view("'||table_name||'"))'))
  where table_name in ('EMP', 'DEPT', 'BONUS')
  /
  TABLE_NAME                     CNT
  ------------------------------ -----
  BONUS                          0
  DEPT                           5
  EMP                            14   
  

• Text box layout problem - and the number of rows displayed

  Hello
  
  Wonder if you can help with my 2 problems
  
  1. when I create text boxes, the label is displayed to the left of the text box. How can I display label above the text box
  CGH
  
  Label
  TextBox
  
  Instead of
  
  Text box label
  
  2. when I ask report showing my data, that it shows that 15 records per page, for the next set of records, I need to click on the following icon at the bottom of the table to go to the next page.
  How can I view all on the same page?
  
  Thanks for help

  1. simply check this using the Horizontal / Vertical alignment of attribute in the section of the label of the element of the Page definition.

  2. in the report of the attributes, the value of the plan of paging None; and the number of rows and number of maximum lines to more than the number of rows that will be returned by the report query.

  (You should only ignore this last you really know that the number of lines make this a reasonable option.) Nobody is going to want to scroll through thousands of lines or wait 5 minutes for total information overload. You wouldn't be popular with your admins/ISP network due to the excessive bandwidth consumed either.)

• Are there limits the number of MMS or SMS recipients on a message?

  I would like to know if there are limits the number of recipients that can be included in an MMS or SMS message. Seems that there may be a limit of 10 only.

  Most carriers impose a limit on the number of recipients, SMS/MMS, as the carrier system is the processing of these texts.  AT & T, it is limited to up to 10 and I can see most of the other carriers are similar.

  I don't know if there is an any limit on iMessage recipients well.

• How to determine the number of rows in the database and save the result to a local variable?

  Hello

  I'm a newbie in the use of TestStand, databases and SQL, and now I've met difficulties. I use TestStand 2014 (32 bit).

  I have a need to know the number of rows in a database and save that number in a local variable. I tried to practice using the database of the Types of step provided with TS. I tried to use the following in a SQL statement:

  Locals.NumberOfRows = ("SELECT COUNT (*) FROM TEST_TABLE")

  It returns an error: specified value is not the expected type. My goal is possible in this way, or I'm doing this completely wrong?

  -RautSa

  Thank you for your response, Norbert. I have a database of who wins new values at random, and sometimes I need the exact number of rows in this table.

  I managed to achieve my goal by using the SQL statement: "SELECT COUNT (*) as Rowcount OF TEST_TABLE", followed by a data GET operation, which records that number of lines in a local variable.

  -RautSa

• Are you limited the number of subfolders that can be added to a current folder within the document library?

  Original title: new folders

  Are you limited the number of subfolders that can be added to a current folder within the document library? I tried to add folders using the new folder tab and it will create not one. I hope I make this clear enough question. I'm not computer savy.  Thanks for your help.

  If you cannot create a new folder anywhere, this could apply.
   
   
  Do, or you have installed Chrome? It appears that an update of Chrome, (mid April 2013), is responsible for the loss of the option new folder. Even if Chrome has not been installed, here are two patches.
   
  
  How to remove and restore the default context Menu items 'New' in Windows 7 and Windows 8
  http://www.SevenForums.com/tutorials/28677-new-context-menu-remove-restore-default-menu-items.html
   
   
  If for any reason, the zip file doesn't work for you, check out the 'response' by Linda Yan in this thread.
  http://social.technet.Microsoft.com/forums/en-us/w7itprogeneral/thread/97de8a2a-12f2-4381-A409-a78f4ae551cf/#99395761-56de-4a76-8C2A-eab498ad735a
   
   
  Tip: When you save the text in Notepad, the default file format is .txt. Replace all files.

   

• get the number of rows affected by their table top

  Hello, I need to count the number of rows updated in table form. In the process of ApplyMRU, I can use the string substitution #MRU_COUNT # to show the lines updated in a success message, but I need to get this value and store it on a table. Any help would be much appreciated. Thank you.

  oscarjavier99 wrote:

  Hello, I need to count the number of rows updated in table form. In the process of ApplyMRU, I can use the string substitution #MRU_COUNT # to show the lines updated in a success message, but I need to get this value and store it on a table. Any help would be much appreciated. Thank you.

  For that you would benefit from the APEX$ ROW_STATUS integrated substitution string.

  1. create a page element display only (in my case P15_UPDATED_ROWS) Save Session State set to Yes and the Type of Condition is set to never.

  2. Add a calculation after the shows with a Type of static assignment and calculation value 0 to reset the counter whenever the page is sent.

  3. Add an On submit - after calculations and Validations process of PL/SQL page linked to your tabular presentation with a Status of Type PL/SQL Expression and Expression 1 :apex$row_status = 'U' and the code of the following process :

  :p15_updated_rows := :p15_updated_rows + 1;
  

  If you don't actually means "day" in the strict sense, and then change the status of process to include possible APEX$ ROW_STATUS 'C', 'U', and "D" values as needed. If you want to count all created, updated and deleted lines, do not add the condition to the process, but make sure the extended run is set to createand changed lines.