World Declaration

Similar Questions

• A table with two foreign keys

  Hi all
  
  I need to create a table (mytable) filled from 2 different tables, for example, table1 and table2
  
  When the rows of the table (mytable) comes from the first table (table1) columns in mytable (foreign key to the second table) are nulled, when they come (foreign key) column in the second table (table2)
  the first table) are cancelled as well.
  
  In terms of performance, architecture is valid, in other words, create a foreign key 2 on mytable and consequently, (the composite foreign key in this table are null according to whether they belong to the first or the second table)?
  
  Thanks in advance for any help
  
  I hope to clear

  As promised,

  mhouri.world > create table p as select * from all_users;
  
  Table created.
  
  mhouri.world > alter table p add constraint p_pk primary key (user_id);
  
  Table altered.
  
  mhouri.world > create table c (user_id references p, name varchar2(30));
  
  Table created.
  
  mhouri.world > select min(user_id),max(user_id) from p;
  
  MIN(USER_ID) MAX(USER_ID)
  ------------ ------------
             0           72                                                       
  
  mhouri.world > insert into c (user_id, name) values (0, 'test without index');
  
  1 row created.
  

  Thanks to the autonomous operation I simulates the effect of two users working on the same parent/child table

  (a) first of all, without any index covering the FK on the child table

  (b) second with a function based index on the FK column (note the desc clause in the definition of the index)

  (c) and finally with an index b-tree on the FK columns

  case (a)

  mhouri.world > declare
    2  pragma autonomous_transaction;
    3  begin
    4  delete from p where user_id = 72;
    5  commit;
    6  end;
    7  /
  declare
  *
  ERROR at line 1:
  ORA-00060: deadlock detected while waiting for resource
  ORA-06512: at line 4 
  
  mhouri.world > rollback;
  
  Rollback complete.
  

  case (b)

  mhouri.world > create index fbi_c_fk on c (user_id desc);
  
  Index created.
  
  mhouri.world > insert into c (user_id, name) values (0, 'test with fbi index');
  
  1 row created.
  
  mhouri.world > declare
    2  pragma autonomous_transaction;
    3  begin
    4  delete from p where user_id = 72;
    5  commit;
    6  end;
    7  /
  declare
  *
  ERROR at line 1:
  ORA-00060: deadlock detected while waiting for resource
  ORA-06512: at line 4 
  
  mhouri.world > rollback;
  
  Rollback complete.
  

  case (c)

  mhouri.world > create index btree_c_fk on c (user_id);
  
  Index created.
  
  mhouri.world > insert into c (user_id, name) values (0, 'test with b-tree index');
  
  1 row created.
  
  mhouri.world > declare
    2  pragma autonomous_transaction;
    3  begin
    4  delete from p where user_id = 72;
    5  commit;
    6  end;
    7  /
  
  PL/SQL procedure successfully completed.
  

  Only the index b-tree covered with success the threat of the deadlock in key foreign unidexed

  Best regards

  Mohamed Houri

• BlackBerry World acceptance tests still are on devices Dev Alpha?

  Hello

  Today, after waiting over a month for one of my apps to be approved and several weeks for another, my apps rejected.

  One of the releases said they were testing on a device Dev Alpha and my app showed some error messages.  During the presentation of my application, I never said that it works on the Dev Alpha device.  I have verified that the Z10 and Q10 areas in the submission form.  Not the Dev Alpha box - so I would not have expected the app to have been tested on a Dev Alpha device.

  February 6, I could get a physical Z10 (I reside in the Canada).  I quickly found problems with my apps submitted then the fixed, reconstructed and published for the presentation.  These displayed new apps is that the tester of BlackBerry World approval declare as default on the Dev Alpha device.

  My apps use OpenGL ES2.0.  Based on the behavior I saw on the Simulator, I don't expect not to work on Dev Alpha devices.  But I know they're working on a production of the Z10.

  How can I get these retested on a Z10 production?  Have I not all hope to get retested without having to again apply with a little better error reporting and wait another 3 to 4 weeks so he could be tested on a Dev Alpha (only to have it fail again test because it works on my Z10)?

  I only gave me one of my ID tickets in one of my emails of rejection.  It is 856058.

  Thank you

  Mark

  Hi Marc,

  This was done by mistake. I get that corrected now.
  I have loaded the application on my Z10 and confirm that it works

  Thank you

• PLS-00201 in the table type declaration

  Hello world

  I want to create a line of some of my table type table type.

  For example:

  create or replace type tmp_Road is table of the XUXUEHAN.tbl_Road%rowtype

  But I PLS-00201: identifier 'XUXUEHAN.tbl_Road' must be declared.

  Where am I wrong? Thank you :-)

  Hi, rp0428.

  I read your page

  But, the way I called the function package-"select * from table (text_x.get('1')); -It's like the way you did-' select * from table (pkg4.get_emp (20));

  But the compiler tell me "types of data not valid."  I don't really understand why. Please help me, thanks :-)

• Variable declaration

  Hi all
  
  I have this code:
  
  Declare
  v_today date: = sysdate;
  v_hello VARCHAR (20): = 'Hello world ';
  v_tomorrow v_today % TYPE;
  BEGIN
  DBMS_OUTPUT. Put_line (v_hello);
  DBMS_OUTPUT. Put_line (v_today);
  DBMS_OUTPUT. Put_line (v_tomorrow + 1);
  END;
  
  The result is:
  
  Hello world
  14 DECEMBER 11
  
  
  How to declare this variable (* v_tomorrow v_today % TYPE; *) correctly so I get the result:
  
  Hello world
  14 DECEMBER 11
  DECEMBER 15, 11
  
  Thank you very much!!

  Declare
  v_today date :=sysdate;
  v_hello VARCHAR(20):='Hello World';
  v_tomorrow v_today%TYPE;
  BEGIN
  v_tomorrow := v_today;
  DBMS_OUTPUT.PUT_LINE(v_hello);
  DBMS_OUTPUT.PUT_LINE(v_today);
  DBMS_OUTPUT.PUT_LINE(v_tomorrow+1);
  END;
  /
  

• help with simple Hello World

  I just downloaded the latest version of Oracle SQL Developer, because I heard that it of free and comes with a debugger.
  
  So I have it all set up, I am connected to my database, but I wanted to run a simple example:
  
  I chose to create a new procedure and a new tab open, I have pasted this code and under DBMS output, I clicked on the + to: set serveroutput on
  

  CREATE OR REPLACE PROCEDURE TEST1 As
  DECLARE
     mytext varchar2(100) := 'Hello world!' ;  
  BEGIN
     dbms_output.put_line(mytext) ;
     dbms_output.put_line(mytext) ;
  END TEST1;

  Yes, I know I posted the put_line twice, it should display Hello World twice? same error with 1 line, when I remove the duplicate.
  
  Yet, I see this message in the log: "Source doesn't have a target executable."
  
  And when I try to compile, I see 2 errors:
  
  Procedure ORCL_SQL_DEVE_TEST1@CONNECTION
  
  Error (2.1): PLS-00103: encountered the symbol "DECLARE" when expecting one of the following: begin function package pragma procedure < an ID > subtype type use < a between double quote delimited identifiers of > form current cursor external language the symbol 'start' is substituted for 'SAID' continue.
  
  Error (6,10): PLS-00103: encountered the symbol "end-of-file" during awaits one of the following values: begin case declare exit end exception for goto rise back loop mod null pragma select update while < ID > < one between double quote delimited identifiers of > < a variable binding > < < close current delete fetch locking open insert commit rollback savepoint SQLExecute fusion forall hose set
  
  
  I'm using the Oracle SQL Developer version: Version 2.1.1.64

  Remove the DECLARE in the procedure. It is not necessary.

• DECLARE compilation error

  Hello world!
  What's not in this code? ! :
  

  WHENEVER OSERROR EXIT OSCODE
  set head off
  set scan on
  set verify off
  set flush off
  set feedback off
  set linesize 410
  set pagesize 0
  set serveroutput off
  
  DECLARE
  
  /* Declaration pour utilisation du fichier */
  v_fichier_in VARCHAR2(18):= 'bus_symbol.txt';
  v_dir_in  VARCHAR(160):= 'ORACLEFILES';
  FicIN UTL_FILE.FILE_TYPE;
  v_ligne VARCHAR2(32764);
  
  /* variable ancien_nom et nouveau_nom */
  v_nouveau_nom VARCHAR2(15);
  
  /* On recupere le nom des tables ou apparait l attribut BUS_SYMBOL */
  CURSOR C_TABLES IS
  SELECT TABLE_NAME FROM user_tab_columns where COLUMN_NAME='BUS_SYMBOL' and TABLE_NAME NOT IN (select VIEW_NAME from user_views);
  
  BEGIN
  
  /* Ouverture du fichier des bus symbol */
  FicIN := UTL_FILE.FOPEN(v_dir_in,v_fichier_in,'R',32767);
  
  /* Pour toutes les lignes du ficIN */
  LOOP
          UTL_FILE.GET_LINE (FicIN, v_ligne);
          v_nouveau_nom := SUBSTR (v_ligne, INSTR (v_ligne, ';') + 1);
          for c_tab in c_tables loop
          execute immediate 'exist('||v_nouveau_nom||')';
          end loop;
  END LOOP;
  
  /* Fermeture du fichier */
  UTL_FILE.FCLOSE(FicIN);
  
  /* Gestion des erreurs */
  EXCEPTION
          WHEN NO_DATA_FOUND THEN
            DBMS_OUTPUT.PUT_LINE('No_data_found - FIN DU FicIN');
            UTL_FILE.FCLOSE(FicIN);
          WHEN UTL_FILE.INVALID_FILEHANDLE THEN
            DBMS_OUTPUT.PUT_LINE('UTL_FILE.INVALID_FILEHANDLE');
            UTL_FILE.FCLOSE(FicIN);
          WHEN UTL_FILE.READ_ERROR THEN
            DBMS_OUTPUT.PUT_LINE('UTL_FILE.READ_ERROR');
            UTL_FILE.FCLOSE(FicIN);
          WHEN UTL_FILE.WRITE_ERROR THEN
            DBMS_OUTPUT.PUT_LINE('UTL_FILE.WRITE_ERROR');
            UTL_FILE.FCLOSE(FicIN);
  --      WHEN OTHERS THEN
  --        DBMS_OUTPUT.PUT_LINE('Autres erreurs');
  --        UTL_FILE.FCLOSE(FicIN);
  END;
  /

  Because I get this error:

  DECLARE
  *
  ERROR at line 1:
  ORA-00900: invalid SQL statement
  ORA-06512: at line 26

  Please help me!
  
  Published by: Moostiq on 5 Jan. 2010 09:43

  Keep in mind that it would be much better to use bind variables

  EXECUTE IMMEDIATE '
       SELECT COUNT(*)
       FROM APPLI_BUS_A
       WHERE BUS_SYMBOL = :val_bus_symb
            AND FAM_SIM IN (''S21'',''S22'')
             AND ROWNUM =1' using val_bus_symb;
  

  http://download.Oracle.com/docs/CD/B28359_01/AppDev.111/b28370/dynamic.htm#CACDDACH

  Alessandro Bye

  Edited by: Alessandro Rossi on 14.52 gen-5-2010

• where and how to declare global variables

  I am creating a Flash multiple-choice quiz. I created a clip named mc_Quiz. This clip contains a layer of action and an object layer. THW action layer contains 1 keyframe with code (code of a button that moves to the next section).
  
  The object layer contains 11 contains keyframes 10 the KeyFrames
  a single movie clip question, (mc_Q1 through mc_Q10) and a btnNext to move to the next section. The video clips in question (e.g., mc_Q1) contains a "btnCheck" button and the code to check the answer.
  
  The 11th framework contains a film click that contains an input text box 'userName', a 'score' of the user's dynamic text box and a submit"" button. Not yet submit the information anywhere, I do it so that when I click on the "present" enter key 'Please enter your name' if it is empty. " And if it is not empty, it will be 'Thank you.'
  
  What I have to do is to have the 'btnCheck' to add 10 points for each correct answer to a variable. Then place this total in the 'rating' dynamictext box when the user moves the frame 10 to 11. I don't know where declaring the variable and how to add the variable every time the correct answer is given.
  
  How this is done?
  
  Here's something that does not work.
  
  First image of "mc_Quiz":
  
  Stop()
  var advanceNext:Number = currentFrame;
  static var; userScore:Number;
  btnNext.addEventListener (MouseEvent.CLICK, nextQuestion);
  
  function nextQuestion(evt:MouseEvent):void {}
  gotoAndStop(advanceNext ++);
  }
  
  
  
  As part of "mc_Q1".
  
  Stop()
  messageBox.text = ""; Clears the response area
  var correctAnswer:String = "Holy"; Good response for comparison games
  var userAnswer:String; with the value of the radio button group.
  var rbg:Object = rbA.group; Get the name of a group from the first button ragio.
  
  
  btnCheck1.addEventListener (MouseEvent.CLICK, checkAnswer1);
  
  function checkAnswer1(evt:MouseEvent):void {}
  userAnswer = String (rbg.selectedData);
  If (userAnswer == correctAnswer) {}
  messageBox.text = "Yes", + userAnswer + ' is CORRECT! ";
  userScore = score.value + 10;
  rbA.enabled = false;
  rbB.enabled = false;
  rbC.enabled = false;
  rbD.enabled = false;
  }
  else {}
  messageBox.text = "your answer is INCORRECT.";
  rbA.enabled = false;
  rbB.enabled = false;
  rbC.enabled = false;
  rbD.enabled = false;
  }
  }
  
  In fact, I have no idea where to declare the variable or how to add 10 points when I select the right answer. It seems to me that I have to some how change this variable within the function of the button.
  

  AS3 does not directly support global variables, like its predecessors, but there are ways around it. Without going through the overall road, to communicate from a child object to a parent the normal approach in AS3 object would (literally)...

  MovieClip (this.parent) .totalScore += 10;

  Alternatively, you can create a world class and use that. If you save the following in a file named "global.as" in your class path (or file that your project is the folder), you can use the variable in a global sense, while importing the class where it is needed:

  package
  {
  public const global: Object = new Object();
  }

  Use it in the Flash file...

  global import;

  global.totalScore = 0;

• Type mismatch Runtime in the stored procedure declaration

  Hello
  
  I met the following on Oracle 10 g. I created a stored procedure:
  
  create or replace procedure ttt's
  c number (9.2);
  Start
  c: = "Hello World";
  end;
  
  Execution of this product the ORA-06502: PL/SQL: digital or value error: character of number conversion error message, that I would have expected at the time of the declaration.
  
  Is this normal or is it a bug? Thanks in advance.
  
  Tamas

  Well as long as everyone will jump in and make the learning experience I'll give you the answer explicitly.

  What you wrote is:

  c number(9,2);
  begin
  c:='Hello world';
  

  ' 1. ' hello world ' is NOT a number
  ' 2 ' hello world ' is 11 bytes, which means that it cannot be drunk in nothing less than a VARCHAR2 or CHAR (11) (11)

  In addition: have you turn on PL/SQL warnings if you would see the following:
  1/2 PLW-06010: keyword 'C' used as a defined name
  4/2 PLW-07206: analysis suggests that the assignment to 'C' may be useless (which is)

  To enable warnings:
  http://www.morganslibrary.org/reference/plsql_warnings.html

• New changes of clock world ios10

  New ios10 world clock changes. The black screen is hard on the eyes and I would change to analog display. Are there options? I don't like the new version

  LisaO27 wrote:

  New ios10 world clock changes. The black screen is hard on the eyes and I would change to analog display. Are there options? I don't like the new version

  Yes. Get one of the hundreds of applications in the app store clock, for example https://itunes.apple.com/us/app/world-clock-pro-free/id1120559609?mt=8

• Complication watch OS world clock 3

  I updated my iPhone to iOS 10 and my watch to watch OS 3, and now I don't have the ability to add a Complication to world clock to any new face of the watch. For the dials that I created under 2.2 (or earlier) which included the Complication of world clock, they always appear, but it is not available on the list of complications when I create a new face of the watch.

  My partner has also improved his phone so his watch and it does not have the Complication of world clock.

  Any ideas that I can do to recover this option?

  Thank you

  Ron

  Hi Ron

  The following steps may help:

  • Close open applications on your iPhone and restart both devices:
    • To close the application, double-click the Home button, and then drag upward on each Preview app to close.
    • Close the two devices together, and then restart your iPhone first.
      • Restart your iPhone, iPad or iPod touch - Apple Support
      • Restart your Apple Watch - Apple Support
  • Disable the twinning and re - pair your watch:
    • The app shows on your iPhone takes a backup of your watch automatically when the disparity with the app choose to restore from backup during the whole upward. Most of the data and settings will be restored, with a few exceptions (for example cards Pay Apple, access code).
    • Cancel the twinning of your iPhone - Apple and Apple Watch Support
    • Set up your Apple Watch - Apple Support

• in the new iso standard 10 analog world clock update?

  How can we change the analog world clock in the new update iso 10? You could do it before, and now I don't see how to change it.

  I only ever remember an analog option on my iPad.

• The T-mobile iPhone 7 would work with all sim cards in the world?

  Hello

  I've been to order/buy an iPhone 7 since the US site and there FREE no. SIM OPTION!

  Currently I do not have any sim on contracts in the United States. I take this iPhone abroad, in Asia, and use it with the SIM local I'd be living here.

  SSO, I wanted to ask you if I choose the option from T-MOBILE out of the 4 options of sim, would the iPhone 7 work perfectly without a sim card and then work perfectly in ALL COUNTRIES in THE WORLD WITH ANY SIM CARD?

  Thanks yo

  Yes, about as long as the cell service supports the type of SIM card used in the iPhone. If you pay the full price for the iPhone T-Mobile, it is unlocked.

• Hello world! How to remove links sponsored by Taboola?

  Hello world!

  My Mac is a 10.8.5 OSX and I can't remove Taboola, probably (I m not sure) an adware or malware. Someone help me!

  It's quite possible, adware or malware...

  You can use the free Malwarebytes utility to remove it.

  Click here > https://www.malwarebytes.com

  Then click on download.

• Is it smart to play games like World of Warcraft on a macbook pro 13'

  Hello

  I'm new to this forum, because I just bought a Macbook Pro 13' of 2015. I used to play games on a computer with windows laptop, but I bought a Macbook Pro for my work and study. I want to play games, but only if its not harmful for my Macbook. I tried to play WoW and he did work properly but the thing is that the fans inside the macbook has started to blow very hard. And the macbook started to warm up, I don't really know if it's a good thing...

  The question is: is it smart to play games like World of Warcraft on macbook pro 13' (2015)

  I really hope that there is someone in the same situation as me, and he can tell me his opinion on this subject.

  Play with the airy machine on a clean surface to allow better air circulation.