Null global variable in block's WHERE clause - no records?

I'm setting a :GLOBAL.emp_id in certain spots in my form. The EMPLOYEE block's WHERE clause says emp_id = :GLOBAL.emp_id. In the POST-QUERY, it sets that variable back to NULL so the next time they want to run a blind query, it will show all records.
Well when the :GLOBAL.emp_id is NULL, nothing comes up in a blind query. I even changed the WHERE clause to say emp_id = NVL(:GLOBAL.emp_id,'') but that didn't do anything either.
How can I get the WHERE clause to (basically) do nothing when that global variable is null? Or should I be messing with DEFAULT_WHERE instead of these global variables
I'm in 6i

I'm sorry - I stumbled on something soon after I posted and changed it to:
emp_id = NVL(:GLOBAL.emp_id,emp_id)
and it worked - duh

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[Solved] Named Bind Variables at Runtime - SQL WHERE clause issue

Hey 'all,
I've been having this issue today with a Search page using Named Bind Variables at Runtime for the search parameters for the WHERE clause in the view objects SQL.
I've got everything working except for a clearing method which I've created so that the user can clear the current WHERE clause from the SQL statment and set it as 1=2 (so that it doesn't do a blind query on load).
The method can clear and set the WHERE clause to 1=2 only when there is already one there.
Below are the methods: (located in my view object class)
public void findInvoiceById(Number invoiceId){
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}The error which I get is the following - this happens when the button is pressed twice in a row, or when no query has been passed previously.
1. JBO-29000: Unexpected exception caught: oracle.jbo.NoDefException, msg=JBO-25058: Definition P_INVOICE_ID of type Variable not found in SupplierInvoicesView1
2. JBO-25058: Definition P_INVOICE_ID of type Variable not found in SupplierInvoicesView1
Any help with this would be greatly appreciated!
Cheers,

Hi Bonnie,
we have it working ok, but still feel that there is room for improvement in the design.
For us the key factors are:
Pages based on the same view object that can be queried multiple ways.
We don't want to put design time bind variables in because it limits the use of the VO
We don't wan't multiple VO's with different where clauses.
The page is displaying the same table columns and fields, but the where clause must be dynamic.
We only want to query on the search field entered (some of our tables are massive)
TopLink named queries are really what we are after, but we don't want to forgo all the other ADF BC functionality. The only examples of ViewCriteria in the developer guide had literals in the where clause and no bind variables. The View Criteria may still be an option, but it appeared quite complex compaired to directly adding and removing bind variables at runtime.
a couple of footnotes:
the following methods are used to clear the runtime variables prior to reusing the VO (thanks to John Stegman for the pointer on the exception handler):
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        catch (NoDefException e)
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        clearBindVariable("P_INVOICE_DATE_FROM");
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executeQuery called twice using ${adfFacesContext.postback == true}
Would still gladly hear other ideas on a better reuse design.
regards,
Brenden

How to populate bind variable in view objects where clause in ADF faces

I've got a page with 2 input items.
The user manually enters the first value.
On the second input item I have created a LOV for the item which opens in a popup. How do I restrict the data returned in the LOV using the value entered in the first input item. I have created a bind variable and have included it in the where clause for the view object but how do I populated it.

Here is an example:
Using the HR schema with the EMPLOYEES and DEPARTMENTS tables.
Example is using ADF BC and created an EMPLOYEES entity with an updateable view object for page,
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(SQL: select department_id, department_name from departments where department_name = :DeptName)
1: add method to the backing bean to filter the LOV
public void getTextValueToFilterLOV(ValueChangeEvent valueChangeEvent) {
Object value_from_form = valueChangeEvent.getNewValue();
FacesContext fctx = FacesContext.getCurrentInstance();
Application fapp = fctx.getApplication();
JUFormBinding formBinding = (JUFormBinding)fapp.createValueBinding("#{bindings}").getValue(fctx);
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vo.setNamedWhereClauseParam("DeptName",value_from_form);
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valueChangeListener="#{backing_DeptForm.getTextValueToFilterLOV}">
</af:inputText>
3. reference the LOV with the id name on the partialTriggers property
<af:selectOneChoice value="#{bindings.EmployeesUpdView1DepartmentId.inputValue}"
label="#{bindings.EmployeesUpdView1DepartmentId.label}" binding="#{backing_DeptForm.selectOneChoice1}"
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partialTriggers="inputText3">
<f:selectItems value="#{bindings.EmployeesUpdView1DepartmentId.items}"
binding="#{backing_DeptForm.selectItems1}"
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Summary:
When you entered a text (LastName), that value is passed into the backing bean method.
The Bean method code will find the LOV Iterator and put the value into the bind variable.
Cheers,
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Problem with DECODE block in WHERE clause

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Thanks,
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Parsing an input parameter for the where clause or record select value

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Global variables to a Tile : where to declare in MAS ?

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rogerwithnell

Please post DDL, so that people do not have to guess what the keys, constraints, Declarative Referential Integrity, data types, etc. in your schema are. Learn how to follow ISO-11179 data element naming conventions and formatting rules. Temporal data should
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This is minimal polite behavior on SQL forums. Why do you think "a variable" and "the integer column" are precise clear specs? I hate to tell you but zero is a integer.
--CELKO-- Books in Celko Series for Morgan-Kaufmann Publishing: Analytics and OLAP in SQL / Data and Databases: Concepts in Practice Data / Measurements and Standards in SQL SQL for Smarties / SQL Programming Style / SQL Puzzles and Answers / Thinking
in Sets / Trees and Hierarchies in SQL

Variable for entire where clause

Is it possible to use a variable for the entire where clause in a PL/SQL select statement?
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SELECT whereclause FROM clausetable WHERE clause = 'TEST'; will return this string: column1 = 'abc'
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create or replace
PROCEDURE TESTWC
(c_out OUT sys_refcursor )
AS
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DECLARE
v_whereclause VARCHAR2(255);
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DBMS_OUTPUT.PUT_LINE(v_whereclause);
OPEN c_test FOR SELECT * FROM dpacsoftware WHERE v_whereclause;
NULL;
END;
END TESTWC;

Is it possible to use a variable for the entire where clause in a PL/SQL select statement?Unfortunately yes.
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How to bind a VO :variable in a WHERE clause to a page parameter

Hello,
I have a VO. This VO has a variable :v in the WHERE clause of the query.
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Hi,
+Is there a way to Bind :v to #{viewScope.myparam} directly in the VO definition in the model project? (It seems it is not possilble)+
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How to use an UNIX shell variable in sql where clause

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Using where clause with like

Hi all,
im trying to set a block default where clause in the pre-query trigger of my block "customer_settlement" , to query the records that exist in a customers table like this, where the customer_name is variable based on the value entered by the user in enter-query mode before hitting the F8 key , the statement is :
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im using Oracle form 9.0.4 and Oracle 10g Db.
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IKQ

Hi,
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Hi,
it is said that there are four WHERE clause sources:
1. WHERE clause block property (on datablock or programatically defined)
2. ONETIME_WHERE clause block property (on datablock)
3. Example Record
4. Query/Where dialog box
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You can update some data, and you can see lots of data you shouldn't. Eg in a form based on emp and with a restriction in the block's where clause property, you can bring up the Query/Where window and type garbage. Then the "Help > Display Error" window shows something like this
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Trying to update through a function gets this:
ORA-14551: cannot perform a DML operation inside a queryWith well defined synonyms, privileges and FGAC/VPD it should be safe to keep this enabled. Putting something after the colons means you don't need to know the column names.
It's handy functionality but I've never been keen on the user-unfriendliness of this window. I'd rather see a dialog showing all the Prompt names and next to each would be a list containing 'Between, <=, != etc', with a free text field after that (or a date picker for date fields, something else for checkboxes, multi-select lists for the list fields, etc). Another for the wish list!

MDX query - need to run different query (where clause) on mondays

The below query works OK and uses the substitution variable CurrentWeek in the WHERE clause, but I have one shortcoming that I need your help for:
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Programmatically select global variable object

Hello all.
I have a rookie question that may have an easy answer (or perhaps you can direct me to a different method which is fine too). I’m using a global variable in an instance where it’s controlled by a parent VI and read by multiple children VIs. The global variable contains Boolean switches, each with a specific name.
If possible, I’d like to make the ‘child VI’ more generic and programmatically flexible so that I don’t have unique children. That way, instead of four children, I just have one (makes debugging easier). Here’s the crux of my question: selecting which object is assigned to the global variable on the block diagram is done by clicking on it with the mouse – can I instead do that programmatically?
More specifically, when using the global in children VIs (as instructed in the “Creating Global Variables” section of the help files), you can select the global vi and add it to your block diagram. The next step is to select the front panel object to associate the placed variable with the proper data (you do this by mouse clicking the node you just created – see the attached image). My question is, can I select the object associated with the placed node programmatically instead of needing to mouse click on it?
Cheers!
Attachments:
ForumEX files.zip ‏31 KB

Steve Chandler wrote:
There is a better way of doing this as the others have already pointed out.
Even Single Process Shared Variables with their API Interface would be better as Globals:
Using this VI to read the variables gives you the ability to reference them with a string (Link to Variable). You may have to add an additional variable in future versions of your code, where you just need to add the new variable to the project and pass the string to the VI without changing the code. Single Process Shared Variables are based on Global Variables, which are usually just a bit faster. Single Process Variables can easily be converted to network variables.
However, I agree with Damien that Data Value References would probably be the best sulution.
Btw, there is a good KB talking about Globals: Are LabVIEW Global Variables good or bad, and when is it ok to use them?
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Null global variable in block's WHERE clause - no records?

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