Bind variables and dates

Similar Questions

• Ask about bind variables and LOVs

  Hello
  I'm new to ADF. Last day, I learned about LOVS, see criteria and bind variables. Now, I tried to develop a sample application. I created a few EOs, village and an AM.
  I also defined a view criteria which takes as a parameter a variable binding and rule the condition when running. Then, I created a group of query based on my view criteria. In this query Panel, when I enter the name of a student in a box (which is related to the binding variable that I guess), the student information is displayed in a table. Now, instead of an entry box, I want a list of choices based on a LOV-driven model that will contain all the names of students available. Is this possible in ADF 11 g?
  
  Thanks in advance

  You must open the VO, you use, go to the view whole section and in the view whole section go in the attributes section.

  In attributes, select the attribute by which you are to the search or make your operation, click on the button add to the list of values: the name of the attribute

  Select the vo object to fill the value.

  You will get the data in the variable binding, that you created in the view criteria.

  Reporter, you can follow the bolg

  http://saumoinak.blogspot.com/2011/02/showing-data-based-on-list-of-values.html

• EO base extension VO with bind variables and display - How To link

  Hello

  I extended an APInvDistAllVO view object by adding two fields which are functions. Basically, in the invoice approval screen, I want to add two fields where the distribution of the invoice is shown.

  The SQL contained in jdeveloper when you extend the VO object is different from the query, what I see in the invoice approval page by clicking on the APInvDistAllVO link. There are two bind variable: 1 = invoice_id and: 2 = line_number being added dynamically. After the extension of the view object, the invoice distribution line is displayed as no record found.

  In my opinion, it is due to not having bind variables does not correct parameters being passed, and under this point of view object is an object depending on the invoice header record. There is a link to the original View object as well. Will be very grateful if someone can provide the way forward in dealing with this situation.

  Rgds Fahad

  Hi AJ

  He worked after changing the style of bind.

  Thank you very much.

  Rgds

  Fahad

• SQL Bind Variables workshop - Date issues

  I use SQL Workshop to run through some queries. I'm having a problem with Bind Variables that contain dates. I enter the following date:
  
  12/12/2013
  
  but it is converted to:
  
  12 & amp; #x2F 12 & amp; #x2F; 2013
  
  I'm doing something wrong?
  
  Thank you
  Glen

  It looks like a bug. It should not escape what either.

  Denes Kubicek
  -------------------------------------------------------------------
  http://deneskubicek.blogspot.com/
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• Bind Variables and using the keyword

  In my dynamic SQL, I use the same variable in several places in my query. Is there a way to avoid rewriting the same value multiple times in the list of arguments to bind? It is something like that - only pseudo code.
  

  DECLARE
  tSQL VARCHAR2(99)
  pVal INT := 2;
  
  BEGIN
  tSQL := 
             'SELECT * ' ||
             '  FROM dual ' ||
             ' WHERE col1 =: iVal ' ||
             '   AND col2 IN (SELECT col2 ' ||
             '                  FROM dual  ' ||
             '                 WHERE col1 =: iVal) ' ||
             ' UNION ' ||
             ' SELECT * ' ||
             '   FROM dual ' ||
             '  WHERE col1 =: iVal';
  
  EXECUTE IMMEDIATE tSQL 
  USING pVal, pVal, pVal;  -- Is there a way to avoid having to rewrite the same bind variable argument three times since the value is the same?
  
  END;

  Is there a way to avoid having to rewrite the same argument three times bind variable as the value is the same?

  Etbin wrote:
  http://docs.Oracle.com/CD/E11882_01/AppDev.112/e25519/dynamic.htm#BHCHIHEJ says:
  Placeholders are associated with bind variable in the USING clause of position, and not by name.

  Concerning

  Etbin

  The exception to this rule is if the SQL statement is an anonymous block or a call statement. In this case, the repetition of the names of the placeholder is significant.

  http://docs.Oracle.com/CD/E11882_01/AppDev.112/e25519/dynamic.htm#CHDFHEAG

  For example, the following will fail with ORA-01008: not all variables

  declare
   v_cnt number;
  begin
    execute immediate 'select count(*) from dual where 1 = :B1 and 2 > :B1'
    into v_cnt using 1;
    dbms_output.put_line(v_cnt);
  end;
  

  However, the following will succeed because the SQL code is in fact an anonymous block:

  begin
    execute immediate 'declare
                         v_cnt number;
                       begin
                         select count(*)
                         into v_cnt
                         from dual
                         where 1 = :B1 and 2 > :B1;
                         dbms_output.put_line(v_cnt);
                       end;'
    using 1;
  end;
  

  Pretty cool stuff.

• bind variables and dynamic sql

  Hi all
  
  Here's my situation:
  
  I have a query with 2 bind variable: the FROM clause also uses a variable binding!
  
  

  PROCEDURE describe_columns(p_curr_tablename VARCHAR(50), p_curr_intentseq NUMBER)
     IS
        l_cur     INTEGER;
        l_query   VARCHAR (100);
     BEGIN
        l_query :=
           'select * from :table_name where ibmsnap_intentseq = :sequencenr';
        l_cur := DBMS_SQL.OPEN_CURSOR;
        DBMS_OUTPUT.PUT_LINE (p_curr_tablename);
        DBMS_OUTPUT.PUT_LINE (p_curr_intentseq);
        DBMS_OUTPUT.PUT_LINE (l_query);
        DBMS_SQL.PARSE (l_cur, l_query, DBMS_SQL.V7);
        DBMS_SQL.bind_variable (l_cur, ':table_name', p_curr_tablename);
        DBMS_SQL.bind_variable (l_cur, ':sequencenr', p_curr_intentseq);
        DBMS_SQL.DESCRIBE_COLUMNS (l_cur, g_count, g_desc_tab);
        DBMS_SQL.CLOSE_CURSOR (l_cur);
     EXCEPTION
        WHEN OTHERS
        THEN
           DBMS_OUTPUT.put_line ('DF-EXCEPTION: ' || SQLERRM);
           DBMS_OUTPUT.put_line (
              'DF-EXCEPTION: ' || DBMS_UTILITY.FORMAT_ERROR_BACKTRACE
           );
  
           IF DBMS_SQL.IS_OPEN (l_cur)
           THEN
              DBMS_SQL.CLOSE_CURSOR (l_cur);
           END IF;
     --         RAISE;
     END;

  and the output is:
  

  CD_B136V4_NEW
  16
   select * from :table_name where ibmsnap_intentseq = :intentseq
  DF-EXCEPTION: ORA-00903: invalid table name
  DF-EXCEPTION: ORA-06512: in "SYS.DBMS_SYS_SQL", line 906

  So is the problem that I want to use a variable binding for the name of the table?
  
  I'd appreciate any help!
  Thank you!

  http://asktom.Oracle.com/pls/asktom/f?p=100:11:0:P11_QUESTION_ID:227413938857

  Identifiers cannot be used as variable bind - never. Identifiers must be "hard-coded".
  in the query.

  I can't put in a link for "emp" variable because I can't use a string
  constant for emp.

  The reason is quite simple - a bind variable query is parsed and optimized once
  variables are evaluated before linking. If I could code:

  Select * from: bind_x

  the optimzer would not have an idea of what will come with, security (access rights)
  could be evaluated and so on. We could not develop a plan for this query - not
  enough information. Therefore, no variable bind for identifiers.

• bind variables and v$ sqlarea

  Hello
  
  How to distinguish the variable bind to static expression
  in v$ sqlarea? Is this possible?
  Please explain
  
  Best regards
  Paul

  Hello

  You acknowledge that bind variable by ':' in front, you cannot merge with literals.

  Best regards
  Nikolai

• Problems getting started using Variables and data sets

  Hello

  I am new to this forum and new with scripts in Illustrator and scripts in general.

  I have an XML file that contains a number of data sets each composed of a number of text variables that I want to use to create a trading card game.

  Each trading card consists of a text field for the title of the map and a number of icons, which are instances of different symbols

  I wrote a script to create each map and I can load variables in my using javascript: newCard.importVariables (news leader (xmlPath));

  Now, I need to access the data in the data sets to power the card.

  To provide some context, it's a picture of one of the cards with the art of the placeholder:

  

  Currently, for the icon in the upper right corner (the PHASE icon), I use the following code:

  phase = "night";

  phaseIcon = newCard.symbols.getByName (phase);

  phaseIcon1 = newCard.symbolItems.add (phaseIcon);

  phaseIcon1.top = 232;

  phaseIcon1.left = 140;

  I want to be able to do, is to shoot the value during the phase of <>< / phase > TextVariable my dataset XML and insert that into the script, but I don't know how. This is where I'm stuck on how to proceed. Any help is greatly appreciated.

  Thank you

  Nick

  OK, so it takes data sets to be able to get the data of type string, right? This has proved not to be as easy as it seemed

  -----------------

  then to get string data that you used the XML to the file instead, your last sample seems fine, I did the same thing then you posted your sample, I used the xml file

  var xmlfile = File.openDialog("Select a valid XML file","XML:*.xml", false);
  if(xmlfile != null) {
      xmlfile.open("r");
      var xmlstring = xmlfile.read();
      xmlfile.close();
      xmlfile = null;
  } else {
  alert("Error opening XML file.");
  }
  var wolfCardsXML = new XML (xmlstring);
  var currentCard = wolfCardsXML.card[0];
  var phaseValue = currentCard.phase.toString();
  
  alert(phaseValue);
  

• Cursors for parent and child, bind variable and library cache

  I was going through the documentation to understand the difference between the parent and the child cursors. Surprisingly, there's not too much help for this. I was able to collect the following information about this
  
  For each statement SQL cache library contains a cursor "parent" for the text of the SQL statement. The parent cursor is composed of a "handle" that can be searched by the hash value via the library cache hash table and an «object' which contains pointers to each of its «child» cursors Each cursor of the child is also composed of a handle and an object. The child object is composed of two segments numbered from 0 to 6. Lot 0 contains all the credentials for a particular version of the SQL statement and lot 6 contains the execution plan. This distinction between parent and child cursors is maintained even when there is only one version of each SQL statement.
  
  Lets say that 2 LMD were fired with the same set of variables bind (names of variables were same but differed from the value.) The only difference between the 2 LMD was the value of the variable binding) and under the same conditions of load.
  
  These DML 2 would be a sliders 2 children of one parent only cursors.
  
  Please tell me detailed documentation on the subject, so my question is too elementary
  
  Kind regards
  Vishal

  I'm not sure how useful jumping in stuff like bunch 0 and 6 bunch is in terms of understanding what is a parent and what is a child cursor.
  This quote seems to come from Steve Adams - http://www.ixora.com.au/q+a/0104/19005414.htm
  It's a good idea to cite your references.

  I'll give it a go.

  A cursor is a lot of information stored in memory on a SQL statement.

  The basic information for a parent cursor is the text of the SQL statement - exact matches of the statement can only share the parent cursor.

  The cursor of the child is really on the implementation plan specific for a statement and the different settings and parameters that caused this plan to be generated.

  There are a whole bunch of reasons why the executions of the same SQL statement may or may not reuse the existing child cursors.

  In your example 2 statements that differ by the variable binding are likely to lead to different children, although there are factors that can lead to lie different values, do not share the same children among whom for example, the length of the dregs, Adaptive setting cursor_sharing = similar and histograms, or new features like cursor sharing (on subsequent runs of renowned sql running suboptimal initially).

  It might be useful to see V$ SQL_SHARED_CURSOR. This shows the disparities that cause children to not be shared. There are more than 60 columns in this view which gives an indication of the number of factors that can influence.
  http://download.Oracle.com/docs/CD/E11882_01/server.112/e17110/dynviews_3059.htm#REFRN30254

  You might want to look here the criteria for sharing SQL:
  http://download.Oracle.com/docs/CD/E11882_01/server.112/e16638/memory.htm#i40017

  Away from the main documentation, perhaps some of the writings of the optimizer Development Group could help?
  http://blogs.Oracle.com/mt/mt-search.cgi?blog_id=3361&tag=cursor%20sharing&limit=20

  Christian Antognini described this area very well in the "Oracle Performance Troubleshooting Guide".

  Published by: Dom Brooks on February 24, 2011 16:45

• bind variables and expression evaluation

  Hi friends,

  I was looking at a query that uses a bad plan. DB is 11.2.0.3 with active user bind peeking. It is a simplified version showing the problem:

  Select egp.bsn

  , egp.klantnummer as 'Persoonsnummer '.

  , egp.samengesteldenaam as 'Samengesteldenaam '.

  , egp.geboortedatum as 'Geboortedatum.

  of pr_eigenschappen2 egp

  where

  (egp.bsn =: b1 or: b2 is null)

  and rownum < 51

  EGP. BSN is varchar2 (10) and has a high selectivity (almost unique) and is indexed btree. table and index have adequate statistics.

  When it is run with b1: = 928818 and b2: = 928818 (linked both as varchar2 (10)) a full table scan + filter is used on pr_eigenschappen2.

  If the query is changed to

  Select egp.bsn

  , egp.klantnummer as 'Persoonsnummer '.

  , egp.samengesteldenaam as 'Samengesteldenaam '.

  , egp.geboortedatum as 'Geboortedatum.

  of pr_eigenschappen2 egp

  where

  (= egp.bsn: b1 or 928818 a null value)

  and rownum < 51

  
  

  the index on the bsn is used, and the query does not 3.9 seconds but 1 millisecond.
  

  
  

  If I had a choice, the query would be different. I don't want to talk about the reason for the request, I would like to know why the optimizer does not use the index in the first case.
  

  
  

  
  

  Jan-marten,

  as Hoek wrote: "the optimizer must take into account the fact that the bind peut var be null, and then a full crawl is required...". ». For the bsn = part: b1 a systematic index scan range would be a good idea, but for: b1 is null, there is only one relevant case producing a result: NULL IS NULL and this condition the CBO only a full table scan or a full scan of the index taking into account (after all a complete analysis of the index may also be called 'index range scan across the table' - but that would be contrary to the 'Beach' in its name).

  By the way: I think that the trick of gather_plan_statistics is not very useful in the test case since you do not use display_cursor with allstats format. He might even have a negative impact on performance since statistical rowsource are quite expensive - depending on the timing of your OS routine. I think that Mr. Lewis has written something on this effect, in his notebook.

  Concerning

  Martin

• Problem with bind variable and as operator usage

  Hi all

  I use JDeveloper Version - 11.1.2.4.39.64.36.1 .

  
  

  While implementing the search functionality in the hierarchical Viewer, I created a link in the underlying t variable, created to find, due east of the request-

  
  

  SELECT XxamAnkitObjects.ID,

  XxamAnkitObjects.OBJECT_NAME,

  XxamAnkitObjects.OBJECT_TYPE,

  XxamAnkitObjects.PARENT,

  XxamAnkitObjects.PARENT_ID,

  XxamAnkitObjects.PARENT_TYPE

  OF XXAM_ANKIT_OBJECTS XxamAnkitObjects

  WHERE object_name like ' %: o_name ".

  What I'm trying to accomplish here, it is that the input provided by the user in the search box must match with the object_name in the table.

  During execution, I met the following error (from newspapers WLS)-

  < QueryCollection > < buildResultSet > [598] java.sql.SQLException: try to set a parameter name that does not intervene in the SQL: o_name

  at oracle.jdbc.driver.OraclePreparedStatement.setNullAtName(OraclePreparedStatement.java:5384)

  at oracle.jdbc.driver.OraclePreparedStatementWrapper.setNullAtName(OraclePreparedStatementWrapper.java:1451)

  The following query has been generated during the operation of a research-

  < ViewObjectImpl > < buildQuery > [593] SELECT XxamAnkitObjects.ID, XxamAnkitObjects.OBJECT_NAME, XxamAnkitObjects.OBJECT_TYPE, XxamAnkitObjects.PARENT, XxamAnkitObjects.PARENT_ID, XxamAnkitObjects.PARENT_TYPE XXAM_ANKIT_OBJECTS XxamAnkitObjects WHERE object_name like ' %: o_name ".

  < ViewObjectImpl > < bindParametersForCollection > [594] params for ViewObject Bind: [model.vo.ObjectNameSearch] AppModule.ObjectNameSearch1

  Advice kindly the way ahead.

  Best regards

  Ankit Gupta

  The problem is that you used quotes around the variable binding. Try

  SELECT XxamAnkitObjects.ID,
         XxamAnkitObjects.OBJECT_NAME,
         XxamAnkitObjects.OBJECT_TYPE,
         XxamAnkitObjects.PARENT,
         XxamAnkitObjects.PARENT_ID,
         XxamAnkitObjects.PARENT_TYPE
  FROM XXAM_ANKIT_OBJECTS XxamAnkitObjects
  WHERE object_name like '%' || :o_name || '%'
  

  A note: this type of query will do a full table scan, as the searches with wildcards to the left cannot use a regular index. If you have multiple lines, this will impact on the research persormance hughe!

  Timo

• printing problem in pdf and csv using bind variables

  Hello
  
  I created a simple sql statement using a query and bind variables. I noticed when I remove the bind variables and hardcode the values that the CSV/PDF links work. When I handed the return variables in the query, the WB shows "no data found" and pdf shows only the column header.
  
  If anyone can help me, I would be very happy!
  
  
  Thank you
  Ayed P.

  Hello

  How are set the bind variable? If there are topics evaluated by default on the elements of the page, so is not necessarily enough to ensure that the exports are their values. To set values, I tend to use calculations, conditional that the element is null, what works "Before Header". In this way, the value is stored in the session and is available for export. I think the defaults to be those that are defined when the page is submitted and are not available until now.

  Andy

• See criteria and bind variables

  Greetings experts,

  I use JDev, version: 11.1.2.3.0

  Recently, I came across this situation. I created a variable binding (in VO), which is used inside a criterion for the VO even. This criterion to display is called within a method that is declared within a class of java of implementation of AppModule (which is exposed on the Client Instance), and through a managed bean I supply the parameter required to initialize the variable binding (and then get the results). This works fine, and the page that uses the domain controller for this appmodule runs without error.

  The point is that I have the same VO, used inside an another appModule (and another page uses, it's DC). I need to use this variable binding in this case, but if I click edit on this VO second, inside the second presentation of appModule interface, I can see that the criteria for the view, is in the "Available" tab, but in the section 'Setting bind' it shows the binding variable said first.

  I am as a matter of fact, receiving and error on this second page if I do some operations, saying this:

  Caused by: java.sql.SQLException: try to set a parameter name that does not intervene in the SQL: partyNum

  at oracle.jdbc.driver.OraclePreparedStatement.setNullAtName(OraclePreparedStatement.java:5384)

  at oracle.jdbc.driver.OraclePreparedStatementWrapper.setNullAtName(OraclePreparedStatementWrapper.java:1451)

  at oracle.jbo.server.OracleSQLBuilderImpl.bindParamValue(OracleSQLBuilderImpl.java:4695)

  at oracle.jbo.server.BaseSQLBuilderImpl.bindParametersForStmt(BaseSQLBuilderImpl.java:3673)

  at oracle.jbo.server.ViewObjectImpl.bindParametersForCollection(ViewObjectImpl.java:21459)

  at oracle.jbo.server.QueryCollection.buildResultSet(QueryCollection.java:1197)

  SQL error in the preparation of the statement.  Instruction: SELECT PartiesContracts.CONTRACT_IDCONTRACT, PartiesContracts.PARTY_TYPE, PartiesContracts.PARTY_NUM, PartiesContracts.ROLE PARTIES_CONTRACTS PartiesContracts WHERE PartiesContracts.CONTRACT_IDCONTRACT =: Bind_Idcontract

  (The binding variable is called, partyNum)

  My question is, can I do to avoid using this variable to link on the second page of appModule only? It seems to be called always regardless the fact if I call the appropriate support bean method that triggers the initialization process.

  Thank you for your time.

  Have you defined the binding variable 'partyNum' as requires it? In this case, you need to specify every time. You can set the variable as not mandatory and it might work.

  The solution would be to set another VO with the same base, without the "partyNum" bind variable and VC and use in the other AM.

  Timo

• Bind Variables in SPARQL queries

  Hello

  I am interested in bind variable and use between requests, but if I understand the concept that underlies the example given in the documentation (http://docs.oracle.com/cd/E11882_01/appdev.112/e25609/sem_jena.htm#autoId15) I'm not able to grasp how exactly to the results of a query_1 for a ? x variable to another query_2query.

  Would it not possible to provide a more detailed explanation and a simple code working on how to do it using Jena Adapater.

  Thank you.

  Sorry for the late reply. Was tied up with a date limit.

  Here is a complete example.

  (1) assumes a model with the following triplets

  % test/forum2550843.nt cat

  .

  .

    .

  .

  .

  (2) run the following query to obtain the values of bind and internal ID resources

  % Cat./tests/forum2550843.sparql1

  PREFIX oext: http://oracle.com/semtech/jena-adaptor/ext/function#>

  Select? x (oext:build - uri-for-id(?x) as? xid)

  where {? y ? x}

  Here is a possible answer to the query above.

  soln (? xid = <> 6354524810780932050>) (? x = )

  (3) to say we want to push the values to bind to? x from the above query in

  "SELECT? topic? "x WHERE {? subject? x}"

  We can build and run the following query:

  % Cat./tests/forum2550843.sparql2

  PREFIX ORACLE_SEM_FS_NS: http://oracle.com/semtech#no_fall_back>

  PREFIX ORACLE_SEM_UEAP_NS: http://oracle.com/semtech#x$ RDFVID % 20 in(?) >

  PREFIX ORACLE_SEM_UEPJ_NS: http://oracle.com/semtech#x $RDFVID>

  PREFIX ORACLE_SEM_UEBV_NS: http://oracle.com/semtech#6354524810780932050>

  SELECT? topic? x

  WHERE {}

  ? topic ? x

  }

  Here are the answers:

  soln (? x = ) (? subject = )

  soln (? x = ) (? subject = )

  It will be useful,

  Zhe Wu

• Performance tests: bind variables

  When you write a SQL for the application, I want to do some performance testing of SQL before providing to JAVA developers. I understand that I need to test using bind variables, can someone guide me how do? What are the best tools out there to achieve? Please provide some guidance. Thank you!

  Rinne says:
  I read more about bind variable and I can test the use of bind variables. I understand that testing SQL using bind variables is a closer representation of the real world. Even when queries have large tables, the performance would be similar if I run the query using literals twice (to avoid hard analysis) compared to tests with bind variables? I am trying to understand more thoroughly the need for tests with bind variables. Why we take more time than the other? Thank you!

  The main thing is that the opimizer will / can do if bind variables different optimization techniques are used or not.
  There are two contradictory effects its regarding the binding settings.

  Effect 1: Reuse of cursor
  If the same is done again and again and again. Maybe different sessions. Then using binding settings is essential. Why? Because the same cursor can be reused, which saves a lot of time for analysis. This occurs mainly in OLTP systems. The idea behind this is that to do the same action, just for a different ID (ID in order for example) will result in an identical implementation plan.

  The result: Faster analysis time and less consumption of memory, because the same cursor can be resused between different sessions.

  Effect 2: Correct assumptions

  According to a filter expression, some using the value of the OBC will make an assumption based on statistical data the number of rows is returned because of this expression and the value.
  Speculation between a literal value and a bound value may be different. In many cases exist technical opimization (bind peeking etc.) to the same literal conjecture binded proposal.

  But there are exceptions, for example a condition such as the following will result in different estimates

  column between 10 and 20
  

  column between :P1 and :P2
  

  There are as well other effects.

  Result: The CBO can make assumptions better if literals. But most of the cases the proposal is identical.

  Conclusion: Literal values are useful if you do large queries where the output size depends strongly on the parameters provided, and where you run that very few of these (OLAP) queries.
  Binding settings are usfull when the same execution (OLTP) need a grand plan number of queries.