Bind variable and normal variable/parameter

Hi all
In many references it is common suggestion to use bind variable in SQL query for better performance. In oracle forms if we write query we use bind variable usually like as below:
select emp_name
from hr_employee
where emp_no = :emp_no;
But if we use backend function, we send the employee number through parameter and in backend function the query is as below
select emp_name
from hr_employee
where emp_no = pEmpNo; --- IN Parameter
Does this query get facility as bind variable??
Thanks in advance.
Mokarem.

You may check Bind Variables for reference.
String literals are usually not automatically converted to binds, unless (and only in certain circumstances)cursor_sharing is enabled.

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Bind variable with search parameter in Oracle BI Publisher 10

Search list for a search parameter in Oracle BI EE works fine when the query doesn't contain a bind variable (parameter identifier). But when a bind variable is introduced in the constraint of search list query, it keeps on searching endlessly. For example,
-- this doesn't work
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Forms version : forms 6i
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Trigger : WHEN_LIST_CHANGED
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Getting a bad bind variable error while compiling a custom form in R12

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DECLARE
BEGIN
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THEN
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Hi,
i am using JDeveloper 11g, i have to create LOV in the JSF. To show the LOV, it has to populate data using View object and its query parameter need to be sent from the Managed Bean.
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#{beantest.bename}
But it gives the following exception.
JBO-29000: Unexpected exception caught:
org.codehaus.groovy.control.MultipleCompilationErrorsException,msg=startup failed, Script1.groovy: 1: expecting '!',found '{'@ line1, column 2.
I have followed the link http://kr.forums.oracle.com/forums/thread.jspa?threadID=615474 like Frank wrote on 8.2.2008:
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Edited by: user9928180 on Dec 17, 2008 9:51 AM

Hi,
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Am using 11g.
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Hi
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I need to solve the following requirement using a view accessors and bind variables;
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2. User can manually edit code into the same attribute as in 1 above, which needs to be validated.
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All help will be considered a early christmas gift!!

Hi
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Possible bug?

Bind variable and parameter problem

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]]>
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Thank you in advance.

Thank you. Now the problem is clear and it relates to the conversion of the report.
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Search parameter type with bind variable

For Search type parameter in Oracle BI Publisher, if the List of values (SQL Query) contains bind variable, then application keep on searching. Any suggestions ?.
Thanks in advance.
Edited by: 966132 on 17-Oct-2012 22:23

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Can viewObject get a parameter from sessionScope to binding variable?

hello,
using Jdev11g ADF Fusion application
Can viewObject get a parameter from sessionScope and assign into binding variable ? without using executeWithParameter
Thanks
greenApple

A. Safwat,
As I said before, I was not trying to be offensive, but simply to explain some of the shortcomings of one solution over another. One of the reasons people give such short answers is that many questions (including this one) have been asked and answered many many many times before on the forum. As to my reasons:
1). Overkill - overkill because you are writing code to do what the framework already provides for you.
2). Not bind-variable friendly - you are gluing in literals into a SQL statement. That means that Oracle will have to hard parse the query for each new value of the filter clause, yielding to poor performance, particularly in a multiuser environment. It should ideally be done using bind variables.
3). Insecure (think about what happens if you put "'xyz' or 1=1" into the filterValue there) - not using bind variables is a security hole. Think through what happens if a filter criteria comes through like the one I mentioned.
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5). Bad (ok, that's my opinion there) - OK, perhaps this was a bit offensive ;)
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Respectfully,
John

View with Bind Variable and ADF table

Hi all,
Please note what i have noticed. I created a view with a bind parameter, overriden the prepareSession of my Application Module to set the bind parameter and execute the query. I then created a simple jsf page and included the view as an adf read-only table. When i run the page, the prepareSession is called, sets the bind parameter, however the selected record of the table is always the second record (Not the first record).
This behaviour can be reproduced with the HR schema. Please follow the below instructions for reproducing the problem.
1. Create a Fusion Web Application (ADF).
2. Create business components from tables.
3. Create a new connection with the HR schema.
4. Import the Departments table as an entity and then click finish.
5. Create a view based on the Departments entity.
6. Modify the Query to include a where clause (where DDepartmentsEO.DEPARTMENT_NAME LIKE :BindParam)
7. Provide an order by clause (DepartmentsEO.DEPARTMENT_ID DESC)
8. Creata a bind variable named "BindParam" of type string.
9. Create an Application Module and include the view object.
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ViewObject myView = this.getDepartments1();
myView.setNamedWhereClauseParam("BindParam", "%");
myView.executeQuery();
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Thank you

First of all i would like to thank you for replying to my thread.
Secondly, i would like to inform you that the example that i have provided is just for REPRODUCTION purposes.
The real scenario has to do with setting the where clause with the authenticated user so that the view will query for data only associated with the authenticated user.
The only way to overcome this behaviour is to include a view action (namedWhereClause in the page definition)
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Parameter error - bad bind variable in a Package..!!

Hello All
i am tring to create a security package with in one procedure i am trying to handle the number of times the user enters the wrong user name or password:
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The code is as follows.
PARAMETER.COUNT := :PARAMETER.COUNT + 1;
IF :PARAMETER.COUNT > 3 THEN
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Abdetu.

Super,It works Just fine.
Thanks Gerd,
That's make me decide that if i have the following statatment for example:
IF :USER_CODE IS NULL THEN .........
I have to change it to :
IF copy (name_in ('USER_CODE' )) IS NULL THEN..........
But,if i have the following select statment :
==============================
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     INTO :GLOBAL.USER_CODE , :GLOBAL.USER_PASS WORD
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=========================
SELECT USER_CODE , USER_PASS WORD
INTO     COPY(NAME_IN ('GLOBAL.usr_code'), COPY(NAME_IN ('GLOBAL.PASSWORD')
FROM APP_USERS
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Thanks in advance.
Regards,
Abdetu.

How to pass parameter [bind variable or substitution variable] to a view?

How can I pass a parameter [bind variable or substitution variable] to a view in Oracle?
Some will tell me that this is not necessary, that I can only pass the parameter when I query the view, but I found some case where this cause performance issue. In long view where I use subquery factoring [WITH], it's necessary to pass the parameter many time through different subqueries and not only to the resulting view.
In other database (SQL Server, Access), we can pass parameters through query. I can't find how to do that in Oracle. Can some one tell me what is the approach suggest by Oracle on that subject?
Thank you in advance,
MB
What I can do:
CREATE VIEW "HR"."EMP_NAME" ("FIRST_NAME", "LAST_NAME")
AS
SELECT FIRST_NAME, LAST_NAME FROM EMPLOYEES;
What I want to do:
CREATE VIEW "HR"."EMP_NAME" ("FIRST_NAME", "LAST_NAME")(prmEMP_ID)
AS
SELECT FIRST_NAME, LAST_NAME FROM EMPLOYEES WHERE EMPLOYEE_ID IN (:prmEMP_ID);

Blais wrote:
How can I pass a parameter [bind variable or substitution variable] to a view in Oracle?
Some will tell me that this is not necessary, that I can only pass the parameter when I query the view, but I found some case where this cause performance issue. In long view where I use subquery factoring [WITH], it's necessary to pass the parameter many time through different subqueries and not only to the resulting view.Yes, there can be performance issues. Views are a form of dynamic SQL and it is hard to predict how they will perform later.
You can't pass parameters to a view. They are not functions. The mechanism to put the values in is what you mentioned, passing the parameter when you query the view.
In other database (SQL Server, Access), we can pass parameters through query. I can't find how to do that in Oracle. Can some one tell me what is the approach suggest by Oracle on that subject? This functionality is not supported.
What I can do:
CREATE VIEW "HR"."EMP_NAME" ("FIRST_NAME", "LAST_NAME")
AS
SELECT FIRST_NAME, LAST_NAME FROM EMPLOYEES;
What I want to do:
CREATE VIEW "HR"."EMP_NAME" ("FIRST_NAME", "LAST_NAME")(prmEMP_ID)
AS
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CREATE VIEW "HR"."EMP_NAME_VW" ("FIRST_NAME", "LAST_NAME","EMPLOYEE_ID")(prmEMP_ID)
AS SELECT FIRST_NAME, LAST_NAME FROM EMPLOYEES;
select *
from emp_name_vw
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Exception caused by bind variables in ORDER BY clause and VO RANGE_PAGING

Hi,
I'm using a ViewObject in RANGE_PAGING mode and discovered a problem when using bind variables in the ORDER BY clause of my statement:
SELECT * FROM (SELECT /*+ FIRST_ROWS */ IQ.*, ROWNUM AS Z_R_N FROM (
SELECT * FROM T_TABLE WHERE (attr1 = :1) ORDER BY decode (attr2, :2, 1, null, 0, -1) desc, attr3 ) IQ
WHERE ROWNUM < :2) WHERE Z_R_N > :3 When a bind variable is used in the ORDER BY CLAUSE and the method VO.getEstimatedRowCount() is call then the DB issued an SQL error:
java.sql.SQLException: Ungültiger Spaltenindex (eng.: invalid column index)
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:137)
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:174)
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:239)
     at oracle.jdbc.driver.OraclePreparedStatement.setStringInternal(OraclePreparedStatement.java:4612)The numbering of the bind variables indicates that the last two bind variables have the wrong numbering (??)
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SELECT *, decode (attr2, :1, 1, null, 0, -1) as ATTR_FOR_SORTING FROM T_TABLE WHERE (attr1 = :2) ORDER BY ATTR_FOR_SORTING desc, attr3 ) IQ
WHERE ROWNUM < :2) WHERE Z_R_N > :3I'm working with JDev 10.1.2 and Oracle DB 9203.
Any comments are welcome!
Thanks,
Markus

You are using the bind variable :2 twice. Did you try
SELECT * FROM (SELECT /*+ FIRST_ROWS */ IQ.*, ROWNUM AS Z_R_N FROM (
SELECT * FROM T_TABLE WHERE (attr1 = :1) ORDER BY decode (attr2, :2, 1, null, 0, -1) desc, attr3 ) IQ
WHERE ROWNUM < :4) WHERE Z_R_N > :3
setWhereClauseParm(0, "a"); // :1
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I want to remove bind variables in my data like & and many

I have a field that holds description of a code and this is having bind variables (special characters). I need to remove them and replace with no value.
I was trying with following sql and the dialog box (Enter Substitution Variable)is opening when I tried to execute the sql.
select regexp_replace('B VOC AC & HEATING (*[[:punct:]])', '') from dual;
please provide me the SQL how to do this
Thanks in advance

Hi,
It looks like your question is about Substitution Variables, that typically look like &start_date or &1. Bind Variables are completely different.
By default, SQL*Plus, and some other front ends, expect that & will be followed by a substitution variable name. If you're not using substitution variables, and you want to treat & as a normal character, then use Pablolee's suggestion. SET DEFINE OFF will make SQL*Plus treat & as a normal character until you end the SQL*Plus session, or you explicitly cancel it by saying SET DEFINE ON.
By the way, did you mean to call REGEXP_REPLACE with 2 arguments, like you posted
select regexp_replace('B VOC AC & HEATING (*[[:punct:]])', '') from dual;
or with 3 arguments, something like this
select regexp_replace ( 'B VOC AC & HEATING'
                       , '(*[[:punct:]])'    -- Round parentheses, '(' and ')', are not doing anything in this case
                       , ''                  -- NULL might be clearer
from    dual;
? Also, '*' in a regular expression p
attern, means "the last item can occur 0 or more times". In your code, there isn't any "last item" before the '*', What are you trying to do? Post some sample data (CREATE TABLE and INSERT statements) for a few different sample cases, and the results you want from that sample data.
See the forum FAQ: https://forums.oracle.com/message/9362002

Bind variable and normal variable/parameter

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