How to select rows as some passes?

Similar Questions

• How effectively select rows randomly a large table?

  Hello
  
  The following code selects 5 lines of a random set of rows in the table emp (employee)
  

  select * 
    from (
         select ename, job
           from emp
         order by dbms_random.value()
          )
  where rownum <= 5

  My concern is that the internal selection causes a table scan in order to assign a random value to each line. This code when it is used against a large table can be a performance issue.
  
  Is there an effective way to random selection rows in a table without having to do a table scan? (I'm new to Oracle, so it is possible that miss me a very simple way to perform this task.)
  
  Thank you for your help,
  
  John.
  
  Published by: 440bx on July 10, 2010 18:18

  Take a look at the clause of the select statement. The number in brackets is a percentage of the table.

  SQL> create table t as select * from dba_objects;
  
  Table created.
  
  SQL> explain plan for select * from t sample (1);
  
  Explained.
  
  SQL> @xp
  
  PLAN_TABLE_OUTPUT
  -------------------------------------------------------------------------------
  Plan hash value: 2767392432
  
  ----------------------------------------------------------------------------
  | Id  | Operation           | Name | Rows  | Bytes | Cost (%CPU)| Time     |
  ----------------------------------------------------------------------------
  |   0 | SELECT STATEMENT    |      |   725 | 70325 |   289   (1)| 00:00:04 |
  |   1 |  TABLE ACCESS SAMPLE| T    |   725 | 70325 |   289   (1)| 00:00:04 |
  ----------------------------------------------------------------------------
  
  8 rows selected.
  

• How to select rows whose column contains specific characters?

  It is a telling of the T1 table with say column C1
  
  Either the C1 field values:
  
  1st row) OF/SPT/A/FWD
  line 2) G/SPT/DE/OF/SPT
  rank 3) R/FWD/SPT/A/FWD/FWD
  rank 4) A/A/OF/SPT/FWD
  rank 5) FWD/SPT/E/OF/A
  
  
  How to get only the lines whose C1 column contains FWD last?

  We can solve this problem with the simple use of a wildcard character:

      select *
      from t1
      where c1 like '%FWD'
      /
  

  Note that this query runs a full table scan, because any index you can have on C1 will be ignored: the indexes are organized on the main characters.

  Cheers, APC

• How to select rows randomly by the percentage of lines by specific column

  I need to select exactly 20% of lines by Department randomly. Ex, table composed of 50 records for the Sales Department, 60 discs for the Department of human resources. I need to get 10 records of the Department sales and 12 records of Department of human resources. but records should be chosen at random. How to get out of it? Thanks in advance.

  Select

  DEPTNO

  count (*) NTC

  WCP

  Deptno group

  DEPTNO CNT

  30 6

  20 5

  3 of 10

  Choose 50% in every department at random

  expected (round up to the next integer)

  DEPTNO CNT

  30 3

  20 3

  2 of 10

  Select * from)

  Select

  EmpNo

  deptno

  , count (*) during the (partition deptno) cnt

  row_number() over (partition by deptno arrested by dbms_random.random) rn

  WCP

  )

  where rn<=>

  order by deptno

  EMPNO DEPTNO CNT RN

  7782 10 3 1

  7934 10 3 2

  7566 20 5 1

  7876 20 5 2

  7902 20 5 3

  7900 30 6 1

  7521 30 6 2

  7654 30 6 3

• How to get the selected row in a programmatic table of the ADF (table generated from a bean)

  Hi all

  
  

  We use JDeveloper Studio Edition Version 12.1.3.0.0 and deployed on GlassFish Server Open Source Edition 3.1.2.2 (build 5) and connect to the SQLServer database.

  
  

  How to get the selected line in a programmatic (using a SortableModel custom not a display object) ADF table (generated from a bean)?

  
  

  We are trying to get the selected row in a bean of a programmatic ADF table to retrieve data based on the selected line.

  
  

  Any idea?
  

  Well, you can use selectionListener to set the selected line to a variable of bean (but this bean must be in extended view or some superiors)

  Something like this: http://www.awasthiashish.com/2015/07/get-selected-row-singlemultiple-from.html

  Dario

• ADF Table how to change the color Selected row in the array unfocuse.

  Hi all

  I have a requirment where I select the row of the table ADF and unfocuse on the table.

  According to the framework it gives me the light yellow color.

  How can I change this color with another color.

  Pls suggest.

  Thanks to Advans

  Barry Mucheli.

  Hello, Barry Mucheli.

  To change the color of the selected row when it loses focus, add the following code in your skin css file.

  AF | : the table-row data: selected: inactive af | : the column cell data

  {

  background-color: Green;

  }

  RFH.

• After I converted the PDF to Word how to select some pages to save as a new document? Thank you

  After I converted the PDF to Word how to select some pages to save as a new document? Thank you

  You said you have a Word file and use certain pages in the file to create a new document.

  Use Word to create a new Word file that has the pages you want for the original Word file.

  You now have a "new document" desired pages.

  With Acrobat Standard or Pro installed, you can create a 'new document' PDF.

  If you don't have Acrobat Standard or Pro, or a subscription to an Adobe online service that can create PDFS from MS Word, you can use the Microsoft process to create PDF that comes with MS Word.

  Be well...

• How to select a row in a table of adf after double click

  I have a table that displays a list of records when the user double-clicks a particular line, I want to select row. The largest part of the example has a separate button for the user to click on choose and I don't want that.

  Hello

  On your table have a clientListener and a serverListener:

  
       
       

  
  ....

  Your clientListener should send a request to the server using AdfCustomEvent.queue:

  function dblClickClientLstnr (event) {}
  element var = event.getSource (event);
  AdfCustomEvent.queue (element, "dblClickServerLstnr", (), true);

  }
  ..............

  On your support of bean, you can retrieve the selected line, for example:

  {} public void getSelectRow (ClientEvent clientEvent)

  DCBindingContainer dcBindings = (DCBindingContainer) ADFUtils.getBindingContainer ();
  DCIteratorBinding iterBind = (DCIteratorBinding) dcBindings.get ("myViewIter");
  Line = iterBind.getCurrentRow ();

  }

  I hope this helps.

• How do I get the selected row in the table (FacesCtrlHierBinding).

  I am trying to get the data of the selected row in the table:
  
  RowBinding () (FacesCtrlHierBinding) tab.getSelectedRow = FacesCtrlHierBinding;
  Line rw = rowBinding.getRow ();
  
  But for oracle.adfinternal.view.faces.model.binding.FacesCtrlHierBinding be found since my 11 JDev to import.
  What is a good package for FacesCtrlHierBinding?

  Hello
  This is the code I use to get the selected rows in a rich table of adf:

      public void deleteMarkedRows()
      {
  
          RichTable table = this.getImportTable(); //get table bound to UI Table
          RowKeySet rowKeys = table.getSelectedRowKeys();
  
          Iterator selection = table.getSelectedRowKeys().iterator();
          while (selection.hasNext())
          {
              Object key = selection.next();
              table.setRowKey(key);
              Object o = table.getRowData();
              JUCtrlHierNodeBinding rowData = (JUCtrlHierNodeBinding) o;
              Row row = rowData.getRow();
              row.remove();
          }
  
          //prepare table to show changes
          table.setFirst(0);
          RequestContext.getCurrentInstance().addPartialTarget(table);
      }
  

  Hope this helps

  Timo

• [ADF, JDev12.1.3] af:table - how to select by program level 1 (on the updating of the table)?

  Hallo,

  I have an af:table that displays the result of a custom search form.

  I need to update the properties of some of the buttons every time that a row in the table is selected.

  I would like to handle this in a SelectionListener I associated with the table.

  public void myTableSelectionListener(SelectionEvent selectionEvent) {
    ELUtils.invokeEL("#{bindings.SearchEmployee1.collectionModel.makeCurrent}",
                     new Class[] { SelectionEvent.class },
                     new Object[] { selectionEvent });
    Row selectedRow = (Row) ELUtils.evaluateEL("#{bindings.SearchEmployees1Iterator.currentRow}");
    System.out.println(selectedRow.getAttribute("Name") + " - " + selectedRow.getAttribute("Surname"));
  }
  
  

  I noticed the System.out.println prints the values of the selected line only when the user clicks on a line while that no value does print when the grid is recharged after clicking the search button.

  To resolve this problem, I guess I need to select by program level 1 in the table whenever the grid is charged, but I have not found a working method to do this.

  You kindly explain how to select by program level 1 of an af:table?

  Thank you

  Federico

  Hi Federico
  only for research you can handle this in your action of the search button (because your selection listener code works for another action), after research get the current row of your table (it would be the first rows) and run your code

  If you are using af:query, then override default query listener to run custom code

  See -Ashish Awasthi (Jdev/ADF) Blog: the substitution of the listener default query, validation in the field of af: query-Oracle ADF

  Thank you

• How can I only compact SOME of my e-mail folders?

  (I have already studied this days and obtained conflicting information - and leading to my distrust horror stories.)

  How do I compact ONLY SOME of my folders (multiple email addresses)? A large part of my email is archival. I keep getting messages to clear disk space (I have more than 300 GB of available), but even after the DELETION of THOUSANDS OF E-MAILS, the amount of space to be clarified (?) increases. I tried setting up of new files, but I'm afraid of their compact because EVERY SINGLE ONE of my existing accounts shows the same message (you can delete up to - now 3.9 GB - of compaction space.) I need to make sure that ONLY PREVIOUSLY DELETED EMAILS will be compacted - and I keep seeing comments on your site people who compacted and LOST ALL OF THEIR EMAILS. (I can't tolerate what is happening to me). How to take care of this without losing important emails?
  Thank you.

  Right-click on the folder, and then select Compact to individual records.
  Most of the horror stories is people who do not compact on a basis regular. Compaction is a necessary maintenance task, and it must be done frequently.

• Photosmart HP 6520: how to select this format size for printer samsung Galaxy print hp 6520

  How to select this format between Samsung Galaxy 3 score and HP Photosmart 6520 printing size.

  Hello

  If you haven't done so already, please download the Hp ePrint app and print them from the app. You will find options of lots within the app for selection of size and type of paper.

  You must also download the HP Print plugin for android. Once downloaded, go to settings and turn it on.  Once downloaded and activated, you will be given some options of paper size when you select print directly on your android device.

• How do you center align some text in a text field?

  How do you center align some text in a text field? Trying to create an editable field for a client, but need a centered text.

  For this you must activate multiline text in the Options tab and formatting. If you then view the properties bar (Ctrl + E), you will be able to set the vertical alignment when the field has focus. You will need to click on the more button in the properties bar and then select the paragraph tab, and you will see where you can set the vertical alignment.

• How to select the pieces of my image in black and white?

  How to select the pieces of my image in black and white? FOW example letter J or the circle or the two together?

  

  It's actually pretty easy, but I have to assume that you know a few basics in Photoshop

  (1) open your existing image

  

  (2) double click on the layer and the 'layer style' appears. In the mix if area set the sliders so the whites in the image disappears

  

  You will be left with just the black elements in design

  

  (3) duplicate layers

  

  and merge them together

  

  to give a standard layer

  

  (4) ctrl or cmd click on the layer to select and create a layer mask

  

  (5) you now have a mask of the image. Duplicate the layer, click alt or option, click on the layer mask to call

  

  (6) the blacks and the whites are not completely black and white for the use of levels to adapt to the absolutes

  

  (7) now you have to decide what you want to select. In this case, I chose the lettering and simply covered everything else to the top with black. You do this by lasso selection and fill and items when it's delicate brush just the details with a black brush "hard." .

  

  (8) at this stage, you can do what you want you have a layer mask. So you can color the text for example

  

  or place in a background color and apply a layer as Beveling effect

  

  Hope that makes some sense. It is much easier to do than to describe.

• I really need someone to help me. I tried to figure out how to select a PDF to convert a Word doc. When I go to select a PDF file, all that comes is the WORD documents. doesn't show ANY of my PDF files... Please help me understand wh

  I really need someone to help me. I tried to figure out how to select a PDF to convert a Word doc. When I go to select a PDF file, all that comes is the WORD documents. doesn't show ANY of my PDF files... Please help me understand what is happening? We put it on automatic renewal so I know it's not that we have not renewed this subscription, because we pay automatically.

  Hi olivias,.

  Looks like there may be some confusion on your system which application should be associated with PDF files. You can reset the file name associations by following the steps described in these articles (depending on your operating system):

  How to change the default application for a file type. Macworld

  http://Windows.Microsoft.com/en-us/Windows/change-default-programs#1TC=Windows-7

  Please let us know if you have any additional questions.

  Best,

  Sara