Using a Variable for dataProvider Information

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  I have the following code in a trigger (PL/Sql block) of a form:
  
  Select fieldname in user1.sometable myvar;
  
  is it possible to use a variable instead of coding hard "user1"? And on the same subject, this variable would also be declared in the world?
  
  Thanks in advance,
  Darren

  Hello!

  User1 is the owner of the table sometable.

  If only the User1 runs your form, there is no need to put the tableowner in front of the tablename parameter.

  If other users run your form, you must create a public or private (for each user) synonym of this table.
  After that, you don't need to use owner.tablename in your sql statement.

  But:
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  Concerning

• Applying the addEventListener method to the Clips using a variable for example appoints

  This project is in HTML5 Canvas using Javascript in Adobe animate.

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  Any help much appreciated.

  Look at what you do in the loop. You do not clickObject for an object reference, configure that you just want it set to a string value.

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  Property accessors - JavaScript | DND

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  EaselJS tutorial: Mouse Interaction

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• Estimate of poor cardinality using Bind Variables

  Hi I'm using the 11.2.0.4.0 Oracle version. I have a query that is underway for the plan of the poor execution by the estimate of poor cardinality for two tables (I've extracted and published this part only) as I mentioned below, the individual conditions for which the estimate goes bad and moving entire query execution path.

  These are for two tables and currently we use BIND variable for them in our code, and I notice, its best estimate gives with literals. I need to know how to handle this scenario that I need this query to execute for all types of volumes. Is there something I can do without changing the code, as it works well for most of the execution? In the current scenario of the main query that uses those below tables providing a plan (index + nested loop) that works very well for small volume, but running for 10 hr + for large volume as ideally its going to the same regime.
  And Yes, most time that this request will be hit for small volume, but killing some appearance of large volume presents the performance of the queries.

  
  Here are the values of the variable binding.

  B1 VARIABLE VARCHAR2 (32);
  B2 VARIABLE VARCHAR2 (32);
  B3 VARIABLE NUMBER;
  B4 VARIABLE VARCHAR2 (32);
  B7 VARIABLE VARCHAR2 (32);
  B5 VARIABLE NUMBER;
  B6 VARIABLE NUMBER;

  EXEC: B1: = 'NONE ';
  EXEC: B2: = NULL;
  EXEC: B3: = 0;
  EXEC: B4: = NULL;
  EXEC: B7: = NULL;
  EXEC: B5: = 0;
  EXEC: B6: = 0;

  ---- For  TABLE1-------
   -- Published Actual VS Etimated cardinality
   
   
  -- With bind values
  select * from TABLE1 SF
  WHERE (   (SF.C1_IDCODE = :B4) OR (NVL (:B4, 'NONE') = 'NONE'))
      AND ( (SF.C2_ID = :B3) OR (NVL (:B3, 0) = 0));
  Plan hash value: 2590266031
  -----------------------------------------------------------------------------------------------------------------------------------------------
  | Id  | Operation                 | Name                | Starts | E-Rows | A-Rows |   A-Time   | Buffers | Reads  |  OMem |  1Mem | Used-Mem |
  -----------------------------------------------------------------------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT          |                     |      1 |        |  28835 |00:00:00.08 |    2748 |     46 |       |       |          |
  |*  1 |  TABLE ACCESS STORAGE FULL| TABLE1              |      1 |     11 |  28835 |00:00:00.08 |    2748 |     46 |  1025K|  1025K|          |
  -----------------------------------------------------------------------------------------------------------------------------------------------
  Predicate Information (identified by operation id):
  ---------------------------------------------------
     1 - storage((("SF"."C1_IDCODE"=:B4 OR NVL(:B4,'NONE')='NONE') AND ("SF"."C2_ID"=:B3 OR NVL(:B3,0)=0)))
         filter((("SF"."C1_IDCODE"=:B4 OR NVL(:B4,'NONE')='NONE') AND ("SF"."C2_ID"=:B3 OR NVL(:B3,0)=0))) 
   
  -- With literals 
  select * from TABLE1 SF
   WHERE  (   (SF.C1_IDCODE = null) OR (NVL (null, 'NONE') = 'NONE'))
        AND ( (SF.C2_ID = 0) OR (NVL (0, 0) = 0));
     Plan hash value: 2590266031
  --------------------------------------------------------------------------------------------------------------------------------------
  | Id  | Operation                 | Name                | Starts | E-Rows | A-Rows |   A-Time   | Buffers |  OMem |  1Mem | Used-Mem |
  --------------------------------------------------------------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT          |                     |      1 |        |  28835 |00:00:00.03 |    2748 |       |       |          |
  |   1 |  TABLE ACCESS STORAGE FULL| TABLE1              |      1 |  28835 |  28835 |00:00:00.03 |    2748 |  1025K|  1025K|          |
  --------------------------------------------------------------------------------------------------------------------------------------
  
  --------For TABLE2 ----------------------- 
  -- Published Autotrace plan, as it was taking long time for completion, and actual cardinality is 45M, but its estimating 49 With bind value---
  
  --withbind value
  select * from TABLE2 MTF
  WHERE (   (MTF.C6_CODE = TRIM (:B2)) OR (NVL (:B2, 'NONE') = 'NONE'))
    AND (   (MTF.C3_CODE = :B1)  OR (NVL (:B1, 'NONE') = 'NONE'))
    AND (   (MTF.C4_CODE = :B7)  OR (:B7 IS NULL))
    AND (   (MTF.C5_AMT <= :B6)  OR (NVL (:B6, 0) = 0))
    AND (   (MTF.C5_AMT >= :B5)  OR (NVL (:B5, 0) = 0));
  Execution Plan
  ----------------------------------------------------------
  Plan hash value: 1536592532
  -----------------------------------------------------------------------------------------------------------
  | Id  | Operation                  | Name         | Rows  | Bytes | Cost (%CPU)| Time     | Pstart| Pstop |
  -----------------------------------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT           |              |    49 | 10437 |   358K  (1)| 01:11:43 |       |    |
  |   1 |  PARTITION RANGE ALL       |              |    49 | 10437 |   358K  (1)| 01:11:43 |     1 |  2 |
  |*  2 |   TABLE ACCESS STORAGE FULL| TABLE2       |    49 | 10437 |   358K  (1)| 01:11:43 |     1 |  2 |
  -----------------------------------------------------------------------------------------------------------
  Predicate Information (identified by operation id):
  ---------------------------------------------------
     2 - storage(("MTF"."C4_CODE"=:B7 OR :B7 IS NULL) AND ("MTF"."C3_CODE"=:B1 OR
                NVL(:B1,'NONE')='NONE') AND ("MTF"."C5_AMT"<=TO_NUMBER(:B6) OR NVL(:B6,0)=0) AND
                ("MTF"."C5_AMT">=TO_NUMBER(:B5) OR NVL(:B5,0)=0) AND ("MTF"."C6_CODE"=TRIM(:B2) OR
                NVL(:B2,'NONE')='NONE'))
         filter(("MTF"."C4_CODE"=:B7 OR :B7 IS NULL) AND ("MTF"."C3_CODE"=:B1 OR
                NVL(:B1,'NONE')='NONE') AND ("MTF"."C5_AMT"<=TO_NUMBER(:B6) OR NVL(:B6,0)=0) AND
                ("MTF"."C5_AMT">=TO_NUMBER(:B5) OR NVL(:B5,0)=0) AND ("MTF"."C6_CODE"=TRIM(:B2) OR
                NVL(:B2,'NONE')='NONE'))
    
  -- with literal
  select * from TABLE2 MTF
  WHERE (   (MTF.C6_CODE = TRIM (null)) OR (NVL (null, 'NONE') = 'NONE'))
   AND (   (MTF.C3_CODE = 'NONE') OR (NVL ('NONE', 'NONE') = 'NONE'))
    AND (   (MTF.C4_CODE = null)  OR (null IS NULL))
     AND (   (MTF.C5_AMT <= 0)  OR (NVL (0, 0) = 0))
    AND (   (MTF.C5_AMT >= 0)  OR (NVL (0, 0) = 0));
  Execution Plan
  ----------------------------------------------------------
  Plan hash value: 1536592532
  -----------------------------------------------------------------------------------------------------------
  | Id  | Operation                  | Name         | Rows  | Bytes | Cost (%CPU)| Time     | Pstart| Pstop |
  -----------------------------------------------------------------------------------------------------------
  |   0 | SELECT STATEMENT           |              |    45M|  9151M|   358K  (1)| 01:11:41 |       |    |
  |   1 |  PARTITION RANGE ALL       |              |    45M|  9151M|   358K  (1)| 01:11:41 |     1 |  2 |
  |   2 |   TABLE ACCESS STORAGE FULL| TABLE2 |    45M|  9151M|   358K  (1)| 01:11:41 |     1 |  2 |
  -----------------------------------------------------------------------------------------------------------
  
  select column_name,num_nulls,num_distinct,density
  from dba_tab_col_statistics where table_name='TABLE2'
  and column_name in ('C3_CODE','C4_CODE','C5_AMT','C6_CODE');
  C3_CODE 0 65 0.0153846153846154
  C4_CODE 0 2 0.5
  C5_AMT 0 21544 4.64166357222429E-5
  C6_CODE 1889955 71 0.0140845070422535
  
  

  933257 wrote:

  ((SF. C1_IDCODE =: B4) OR (NVL (: B4, 'NONE') = 'NONE'))

  In fact for literals, I did not find any section of the predicate after running the sql code with activation "set autotrace traceonly explain."

  The main problem is with another large query whose cardinality is underestimated due to the presence of these table (table1, table2) with the above mentioned clause, and the query is for the analysis of index + nested with values of Bind loops and take 10 hr +, whereas with literals, its completion in ~ 8minutes with FTS + Hash Join.

  Your real problem is that you try to have just a single SQL query handle all POSSIBLE thanks to the use of embedded FILTERS ' either / or ' filters in the WHERE clause.  You want only a select this OPTION to run whatever filters have been selected at run time by the user or the application using it.  And it would never work.  You really need to SELECT different queries for different combinations of filter conditions.

  Why?  Think for a minute.  How Oracle works internally?  A SQL SELECT query gets analyzed and an execution plan is produced which is stored in the library cache and gets REUSED on all subsequent executions of this query - except in certain cases where there may exist several plans run through several cursors of the child.  So with only SELECT a query you only AN execution plan in the library cache, to be used by all THE executions of this query, regardless of the value of your run-time binding variables.

  Lets put another way - each library cache execution plan is associated with a SQL statement.  If you want a DIFFERENT execution plan then you need run a DIFFERENT SQL statement.  That's how you get a different execution plan - by running a different SQL statement.  Running the SAME SQL query generally you will get the SAME execution plan every time.

  In addition, because of the "either / or" filters that you use you will end up generally with a full Table Scan on each of the referenced tables.  Why?  Given that the optimizer must produce an implementation plan that manages all possible contingencies for all values of possible bind variables in the SELECT.  If the optimizer should choose to use any index based on one of these "either / or" filters then it would only help performance when real value was provided, but it would be really bad if a NULL value was supplied.  If the optimizer ends up ignoring the index because they are not always optimal for all possible input values and instead chose a plan that is "good enough" for all input values possible.  That means that it will use a scanning Table full.

  I hope you can see that it is precisely what is happening for you with your query.  You select this OPTION to manage the different combinations of filter, which leads to the execution plan only one, which leads to scans full Table on the referenced tables in these ' either / or ' filters.

  The solution?  Build queries SELECT DIFFERENT when input values are NULL.  How you do that?  Read this article to ask Tom that tells you:

  http://www.Oracle.com/technetwork/issue-archive/2009/09-Jul/o49asktom-090487.html

  To sum up - when you have real value for a bind variable 'bind_var1' add the following filter to your CHOICE:

  AND column_name1 =: bind_var1

  When the binding variable is NULL, add the filter according to your CHOICE:

  AND (1 = 1 OR: bind_var1 IS NULL)

  Now, you'll have 2 queries SELECT must be performed, which have exactly the same number of variables in the same order bind, which is important.  When you then run one of these variations, Oracle can analyze and optimize each one SEPARATELY, with a single execution by the SELECT query plan.

  When you provide a real value, the filter is a normal 'column = value' that the optimizer can use all indexes on this column, because NULL values are not referenced.

  When there is no real value, the optimizer will analyze the '1 = 1 GOLD' and realize that "1 = 1" is set to TRUE and GOLD, it is quite TRUE regardless because the binding variable is null or not.  This means that the optimizer will actually REMOVE this filter, because it filters nothing because it is always TRUE.  You will end up with an operating plan based on the other filters in the query, which is what you want because you have no filter on this column.

  What is it - producing distinct SELECT queries to determine if you have a real value to filter or not you end up with DIFFERENT execution plans for each of them, and each of them is OPTIMAL for this particular set of filters.  Now you get good performance for each variation of the performance of the SELECTION, rather than sometimes good and sometimes very bad when using SELECT only one.  It is impossible to try to get multiple shots of execution 'optimal' out of a SELECT query.  That's why you get mediocre performance under different bound the values of the variables.

  John Brady

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  5. click on START > run

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  8 allow the system to attempt disassembly of the volume

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  Visit our Microsoft answers feedback Forum and let us know what you think.

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• Use of variable in the For-Each statement

  Hello gurus.
  
  I'm having a problem using a variable, I created in a statement for each. Here is the code I am using
  My goal is to create a variable based on the type of Bill. If the invoice is a proof or a reprint, a copy should be printed. If it's a final bill, I need two copies.
  
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  When I run with the last impression for each preview, I get an error that says "undefined variable: 'x'"»
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  My question is: How can I use the variable 'x' in <? for-each@section:xdoxslt:foreach_number($_XDOCTX,1,$x,1)? >
  
  TIA
  Darius
  
  Published by: 852460 on May 24, 2011 08:31
  
  Published by: DEK17 on July 20, 2011 13:15

  Probably, this will help you

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  Try

  
  or
  
  

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  Someone at - it guidelines on the use of overall compared to the local variables for the business rules? I really don't like the world no matter what, so if someone has a compelling reason to use overall.
  
  If I use a local variable in the world, is there a single character required for the local variable or no problem with the help of the same name local var in all of business rules.
  
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  -form1. #subform [0]: initialize :-(FormCalc, client).

  //////////////////////////////
  TO START: SET GLOBAL PRICES.
  //////////////////////////////

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  ////////////////////////////
  END: SET GLOBAL PRICES.
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  -form1. #subform [0]: output :-(FormCalc, client).

  -form1. #subform [0]: calculate :-(FormCalc, client).

  -form1. #subform [0]: validate :-(FormCalc, client).

  -form1. #subform [0]: preSave - (FormCalc, client).

  < < = etc etc etc = > >

  -form1. #subform [0]. Item1Cost::initialize :-(JavaScript, client).

  -form1. #subform [0]. Item1Cost::enter :-(FormCalc, client).

  -form1. #subform [0]. Item1Cost::exit :-(FormCalc, client).

  -form1. #subform [0]. Item1Cost::calculate :-(JavaScript, client).

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  var AreaSelected = Item1Area.rawValue;
  var NumberOfUsersSelected = Item1Users.rawValue;

  Declare other variables.
  var Users1Calculation;
  var Users2to5Calculation;
  var Users6to20Calculation;

  
  Calculate the cost to the "components" user will depend on the number of users selected for the region.
  Switch (true)
  {
  If (NumberOfUsersSelected < 2):
  Users1Calculation = NumberOfUsersSelected * Cityscope_Sydney_CostUser1;
  Users2to5Calculation = 0.00;
  Users6to20Calculation = 0.00;
  break;
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  }

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  -form1. #subform [0]. Item1Cost::MouseEnter :-(FormCalc, client).

  -form1. #subform [0]. Item1Cost::mouseExit :-(FormCalc, client).

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  -form1. #subform [0]. Item1Cost::full :-(FormCalc, client).

  -form1. #subform [0]. Item1Cost::MouseUp :-(FormCalc, client).

  -form1. #subform [0]. Item1Cost::MouseDown :-(FormCalc, client).

  -form1. #subform [0]. Item1Cost::click :-(FormCalc, client).

  -form1. #subform [0]. Item1Cost::preSave - (FormCalc, client).

  -form1. #subform [0]. Item1Cost::postSave - (FormCalc, client).

  -form1. #subform [0]. Item1Cost::prePrint - (FormCalc, client).

  -form1. #subform [0]. Item1Cost::postPrint - (FormCalc, client).

  -form1. #subform [0]. Item1Cost::preSubmit:form - (FormCalc, client)-

  -form1. #subform [0]. Item1Cost::docReady - (FormCalc, client).

  -form1. #subform [0]. Item1Cost::docClose - (FormCalc, client).

  -form1. #subform [0]. Item1Cost::ready:form - (FormCalc, client)-

  -form1. #subform [0]. Item1Cost::ready:layout - (FormCalc, client)-

  -form1. #subform [0]. Item1Users::initialize :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::enter :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::exit :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::calculate :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::validate :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::MouseEnter :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::mouseExit :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::change :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::full :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::MouseUp :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::MouseDown :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::click :-(FormCalc, client).

  -form1. #subform [0]. Item1Users::preSave - (FormCalc, client).

  -form1. #subform [0]. Item1Users::postSave - (FormCalc, client).

  -form1. #subform [0]. Item1Users::prePrint - (FormCalc, client).

  -form1. #subform [0]. Item1Users::postPrint - (FormCalc, client).

  -form1. #subform [0]. Item1Users::preSubmit:form - (FormCalc, client)-

  -form1. #subform [0]. Item1Users::docReady - (FormCalc, client).

  -form1. #subform [0]. Item1Users::docClose - (FormCalc, client).

  -form1. #subform [0]. Item1Users::ready:form - (FormCalc, client)-

  -form1. #subform [0]. Item1Users::ready:layout - (FormCalc, client)-

  .. and so on and so forth...

  In short, I want the code in:

  -form1. #subform [0]. Item1Cost::calculate :-(JavaScript, client).

  .. .to be able to access the variables I created in:

  -form1. #subform [0]: initialize :-(FormCalc, client).

  
  (I guess that's where I store global variables)

  At this point, global variables are not accessible with the above configuration.  Was the only one I can get this working is to cut and paste the Globals in each item of form1. #subform [0], which of course defeats the purpose of global variables!  I intend to have a lot more items so wouldn't duplicate global variables for each of them!

  Can someone show me how to do this?

  Any help is very appreciated!

  Thank you

  Stanbridge

  Post edited by: stanbridgej - colors and fonts or not will not save.  Are bolded my question make (non-fat) code easier to read (I hope).

  I haven't used Formccalc, but I thought it would be the same regardless. Insert a script object to the top of the hierarchy and call it, for example "sco." Paste the Globals. Then refer to variables of the extent that sco. Cityscope_Sydney_CostUser1, etc. Make one

  App.Alert (sco. Cityscope_Sydney_CostUser1);

  one of the fields. If the debugger is activated, it will tell you if it cannot resolve the reference as "sco. In this case, you may need to use the som expression to reference the script object, for example

  var scoScript = xfa.resolveNode ("topOfHierarchy.sco");

  scoScript.Cityscope_Sydney_CostUser1

  But if as close as possible to the top of the hierarchy above should work.