Dynamic lov selection

If anyone knows other reference than Bayross, pls tell me. The example in Bayross is very difficult to unberstand. it is very urgent. pls reply.
Regards
Subrata

What is the the reference given in Bayross - if you tell me that I'll give you some other easy example.
Senthil.

Similar Messages

Dynamic lov, Select List in Report

Hi all,
I have searched the APEX forum for dynamic lov but somehow no topic could really solve my problem.
I have a report and 2 columns in this report are displayed as a select list. I want one of the select list show some values depending on the other select list in this report. If the value of the first select list is equal to some data the second select list should show a lov and otherwise nothing.
All examples i have found so far seem to explain a solution for a select list item on the page and not for a select list in a report like in my case.
Are there any advices or some links you can give?
Thanks in advance
Markus

See http://htmldb.oracle.com/pls/otn/f?p=18326:54:1415328128204513::::P54_ID:1282
and http://forums.oracle.com/forums/thread.jspa?messageID=1222153&#1222153

QBE Report and Dynamic LOV

I have a QBE Report on a table "A" where the value of a field "F" is the "id", of another table "B".
For populating the table "A" I have create a form that uses a dynamic LOV (select name, id from B).
In the QBE report, the value of "F" is the id, instead of the "name". How can I display the name?
Moreover, if I "Update" a record, I would like to have (in the form for updating) the combobox with the complete LOV and NOT the text box with the id.
How can I do that?
thanks

Hi,
This happens in the case when a webview component has been added to a page and the mode selected is EXCEL. You see the excel dump on the screen.
This was a bug and has been fixed in 902.
Incase U want an excel report then you would have to use the RUN options available from the manage screen or navigator .This brings up a save option.You can open it or save the same and then open it.
Thanks,
Anu

Problem with a Display Only field based on a dynamic LOV

I have a field/item which is based on a dynamic LOV:
select DESCRIPTION display_value, STATUSID return_value
from CTCXFRREQS_STATUS_LOV
order by 1
...and I need it to be display-only on the page. However, if I make it a display-only field, the return value is displayed, not the display value. If I change it to be a select list field, the display value is shown, as I expect and need.
The field was based on a static LOV before, and it worked perfectly then.
Has anyone seen this before, and have any suggestions on how to work around it?

Hi,
In edit item
Display As: Display Only
Save Session State: Yes
Based On: Display Value of List of Values
Named LOV: YOUR_LOV
Regards,
Kartik Patel
http://patelkartik.blogspot.com/
http://apex.oracle.com/pls/apex/f?p=9904351712:1

Item Selection on a dynamic LOV (SQL Query)

Hi,
I've a dynamic LOV with an SQL query who return a list of data (one column). When i select a data in this LOV to be use as an item (sql query) in the same page the data is always null. In debug mode substitution string is null.
FYI : when the data is selected, a button is clik to perform an sql query for a report in another page.
Thanks. Sorry Abasolute beginner
Message was edited by:
user581765

Thanks for Your help.
The date is in fact a CHAR display (not really a date) so that is not the error.
For your information when i select a row in the list (format char YYYYMMDD_HHMM) it seems that Apex do not catch my select in the Session state.
I've change the item name with P2_DATE_FLOW but the problem remain.
This is the debug log if can help
0.03: Application 114, Authentication: CUSTOM2, Page Template: 3644802034190382
0.06: ...Session ID 1868105032215374 can be used
0.06: ...Application session: 1868105032215374, user=Neop
0.06: ...Determine if user "Neop" workspace "2859608277950243" can develop application "114" in workspace "2859608277950243"
0.06: Session: Fetch session header information
0.06: ...Metadata: Fetch page attributes for application 114, page 3
0.06: Fetch session state from database
0.06: Branch point: BEFORE_HEADER
0.06: Fetch application meta data
0.08: Computation point: BEFORE_HEADER
0.08: Processing point: BEFORE_HEADER
0.08: Show page template header
0.08: Computation point: AFTER_HEADER
0.08: Processing point: AFTER_HEADER
0.08: Computation point: BEFORE_BOX_BODY
0.08: Processing point: BEFORE_BOX_BODY
0.08: Region: Report 1
Report 1
0.08: show report
0.09: determine column headings
0.09: parse query as: CFM_MDRE
0.12: binding: ":P2_DATE_FLOW"="P2_DATE_FLOW" value="0"
0.14: print column headings
0.14: rows loop: 15 row(s)
No data found.

Select item on a Tabular form with a different dynamic LOV on each row

I would like to use a tabular form where one of the columns is a dynamic LOV based Select, and where that dynamic LOV refers to one of the column values on each row.
So if the tabular form represented a list of teams and the LOV-based Select column was the current team leader, I would want that select list to be populated only with the members of that team (different for each row). Since the list of team members is in some other table (all_players or something) I would want to populate the LOV with a query with a where clause that selected only those players records with a team-membership equal to the current tabular form's team id. So, on each row that select list's contents would be different.
-- Justin

I'm beating a dead horse here but I did get something to work with "less" code. My current needs do not require me to cascade drop downs, I only want 1. You can use the query like the in the first reply (but I don't have a table with joins) I created a simple two column table dept_emp with 4 records 10,null 20,null .... I want to fill the nulls with an employee but ONLY an employee that matches the dept. (Same concept of team leader and members).
Here's the query:
select apex_item.display_and_save(1,dept) dept,
apex_item.select_list_from_query(2, name, 'select ename from emp where deptno='||dept) name
from dept_emp
I removed the code that was there already (ApplyMRU) and just put in this code:
BEGIN
FOR i IN 1..HTMLDB_APPLICATION.G_F01.COUNT LOOP
UPDATE dept_emp
SET
name=HTMLDB_APPLICATION.G_F02(i)
WHERE dept=to_number(HTMLDB_APPLICATION.G_F01(i));
END LOOP;
END;
The G_F01 matches the column 1 and so forth. There's more documentation but little explanation at:
http://download.oracle.com/docs/cd/B25329_01/doc/appdev.102/b25309/api.htm#sthref2171
The thing I could not get to work was a dynamic message
#MRU_COUNT# row(s) updated, #MRI_COUNT# row(s) inserted.
Not sure when the MRU_COUNT gets populated (probably in the routine I removed ;))
You're probably way past me by now but I like to have as little code as possible when it comes to maintaining an app. That's why I liked oracle forms so much. This kind of stuff was pretty easy to do.
Thanks again everybody!

Problem - Creating a Dynamic LOV using duplicate value in select statement

I am trying to create a Dynamic LOV by attempting to follow a pattern similar to the following:
select shop_name d, shop_id r
from shops
order by 1
However, I want to use the shop_name twice as in the following because I do not have any other unique identifier available such as a shop_id to associate with the shop name:
select shop_name d, shop_name r
from shops
order by 1
But I get an error where I am not allowed to duplicate the shop_name in the select statement. I read somewhere on this forum where it can be done but I can't find exactly how.
Can someone tell or show me how to accomplish this?
Thanks in anticipation for your answer.
Thanks,
Ric

Ric,
I just tried to do this on APEX 3.0, and it worked just fine with this SQL:
select ename d, ename r from emp order by 1Perhaps you could put an example on apex.oracle.com or specify the error message that you're getting.
So as long as you have uniquely aliased both columns, this should not present a problem.
Thanks,
- Scott -

Dynamic bar chart based on LOV selected

Apex 2.1 with XE : running on windows xp.
I am trying to create charts based on selected criteria such as level 1, level 2 and level 3. If the user selects level 1 chart is expected to group level 2 and level 3 parameters else if the user selects level 2 criteria on top of level 1 then it should filter to the next category and so on. To make it simple I created three different queries which would generate the required graphs.
To achieve this I decided to use PL/SQL function that would return three different chart queries based on the LOV selection. Although the function works well for each of the queries they dont work with a if else condition based on LOV selection. So what is the problem with creating such as dynamic query. Can I use the "%" values of LOV in my if else condition if not why ?
Any alternatives ?

Well. The queries for the charts run independently well. I guess I might be using the if else condition in an improper fashion.
If the second LOV filter is not used.. I am matching the :LOV2 value with "%" and execute appropriate chart query based on single selection criteria and for the else case I use the other query and so on.
I wish to show the code but since I upgraded to 3.0.1 today my application page views don't render properly. The images are missing ..and whole page is missing for editing.

Dynamic LOV with dates and selected default value

Hello,
I have a dynamic lov with dates. Query looks like this:
select distinct concat(to_char(b.send_day_time,'YYYY.MM.DD HH24'),':00') display_value, to_char(b.send_day_time,'YYYY.MM.DD HH24') return_value
from ...
No I want to select a specific date as the default value. I put the following code for the default value:
declare
begin
return to_char ('2008.02.19 10:00');
end;
But it doesn't work.The date (string) exists in the lov but it is not selected.
Can someone tell me where the problem is?
Thx in advance.
Greetings,
hamburger

Hi hamburger,
As return value you specified to_char(b.send_day_time,'YYYY.MM.DD HH24'),
so your default value should be like to_char('2008.02.19 10'). Also pay attention to select the "Default Value Type".
Hope this helps.
chrissy

Problem with dynamic LOV and function

Hello all!
I'm having a problem with a dynamic lov in APEX 3.0.1.00.08. Hope you can help me!
I have Report and Form application. On the Form page i have a Page Item (Popup Key LOV (Displays description, returns key value)).
When i submit the sql code in the 'List of vaules defention' box. I get the following message;
1 error has occurred
LOV query is invalid, a display and a return value are needed, the column names need to be different. If your query contains an in-line query, the first FROM clause in the SQL statement must not belong to the in-line query.
When i excecute the code below in TOAD or in the SQL Workshop it returns the values i want to see. But somehow APEX doesn't like the sql....
SELECT REC_OMSCHRIJVING d, REC_DNS_ID r FROM
TABLE(CAST(return_dns_lov_fn(:P2_DNS_ID) AS dns_table_type)) order by 1
returns_dns_lov_fn is a function, code is below;
CREATE OR REPLACE FUNCTION DRSSYS.return_dns_lov_fn (p2_dns_id number)
RETURN dns_table_type
AS
v_data dns_table_type := dns_table_type ();
BEGIN
IF p2_dns_id = 2
THEN
FOR c IN (SELECT dns_id dns, omschrijving oms
FROM d_status dst
WHERE dst.dns_id IN (8, 10))
LOOP
v_data.EXTEND;
v_data (v_data.COUNT) := dns_rectype (c.dns, c.oms);
END LOOP;
RETURN v_data;
END IF;
END;
and the types;
CREATE OR REPLACE TYPE DRSSYS.dns_rectype AS OBJECT (rec_dns_id NUMBER, rec_omschrijving VARCHAR2(255));
CREATE OR REPLACE TYPE DRSSYS.dns_table_type AS TABLE OF dns_rectype;
I tried some things i found on this forum, but they didn't work as well;
SELECT REC_OMSCHRIJVING display_value, REC_DNS_ID result_display FROM
TABLE(CAST(return_dns_lov_fn(:P2_DNS_ID) AS dns_table_type)) order by 1
SELECT REC_OMSCHRIJVING display_value d, REC_DNS_ID result_display r FROM
TABLE(CAST(return_dns_lov_fn(:P2_DNS_ID) AS dns_table_type)) order by 1
SELECT a.REC_OMSCHRIJVING display_value, a.REC_DNS_ID result_display FROM
TABLE(CAST(return_dns_lov_fn(:P2_DNS_ID) AS dns_table_type)) a order by 1
Edited by: rajan.arkenbout on 8-mei-2009 14:41
Edited by: rajan.arkenbout on 8-mei-2009 14:51

I just had the same problem when I used a function in a where clause.
I have a function that checks if the current user has acces or not (returning varchar 'Y' or 'N').
In where clause I have this:
where myFunction(:user, somePK) = 'Y'
It seems that when APEX checked if my query was valid, my function triggered and exception.
As Varad pointed out, check for exception that could be triggered by a null 'p2_dns_id'
Hope that helped you out.
Max

Return multiple values from dynamic lov in apex 3.2.1

Hi
I need to create a dynamic lov that displays multiple values from a table and RETURNS multiple values into display only fields in a form page to be saved to the database
For example
dynamic list of value name SERVER
select name || ',' || life_cycle d, name r
from sserver
order by 1
This SERVER LOV is attached to the P4_SSERVER_NAME field in the form.
However this only returns sserver. name into the P4_SSERVER_NAME field in the form. I would need to capture the life_cycle field as well and populate the P4_LIFE_CYCLE field in the form as well. How does one do this?
I have searched this forum however could not find a thread that fit my situation. i saw that in 4.2 there is dynamic action however unable to upgrade at this moment.
any suggestions are greatly appreciated.
thank you

Hi CRL,
One method is to set the value of your P4_LIFE_CYCLE item via APEX_UTIL.set_session_state
To do this you need to create a Page Process
Type PL/SQL anonymous block
Process Point On Load - Before Header
The source for the Process might look like this: DECLARE
   l_life_cycle   VARCHAR2 (50);
BEGIN
   SELECT life_cycle
     INTO l_life_cycle
     FROM sserver
    WHERE :p4_sserver_name = sserver.name;
   APEX_UTIL.set_session_state ('P4_LIFE_CYCLE', l_life_cycle);
END;Jeff

Creating a dynamic lov based on a column

Hi,
I want to create a dynamic lov based on a column in a database-table.
Eg. the query
'select code, description from code_table'
is the contents of the column 'lov_query' in the table 'parameters'.
For every parameter there can be a different lov-query, but the result is always
two columns (code and description, number and name, etc.), exactly what you need to use in a lov.
I've written a (dbms_sql) function that takes the parameter-id and returns the lov_query.
create or replace function "GET_PMR_LOV"
(pmr_id in NUMBER)
return VARCHAR2
is
cur INTEGER := DBMS_SQL.OPEN_CURSOR;
fdbk INTEGER;
l_pmr_id NUMBER(9) := pmr_id;
l_stmnt VARCHAR2(2000);
begin
DBMS_SQL.PARSE
(cur, 'select pmr.lov_query from parameters pmr where pmr.ID ' || ' = 'L_PMR_ID', DBMS_SQL.NATIVE);
DBMS_SQL.BIND_VARIABLE (cur, 'L_PMR_ID', l_pmr_id);
DBMS_SQL.DEFINE_COLUMN (cur, 1, l_stmnt, 2000);
fdbk := DBMS_SQL.EXECUTE (cur);
fdbk := DBMS_SQL.FETCH_ROWS (cur);
IF fdbk > 0
THEN
DBMS_SQL.COLUMN_VALUE (cur, 1, l_stmnt);
return (l_stmnt);
ELSE
return null;
END IF;
DBMS_SQL.CLOSE_CURSOR (cur);
END;
But now I'm stuck on how to pass on this statement in HTMLDB
as an dynamic lov, I don't seem to be able to execute this statement
into the two display and return columns. Any ideas?

Hello again,
This lov is on an updatable report-column where the user has to make a choice from an non-named, popup and query-based lov. In the lov-query box I have just put:
"return get_pmr_lov(:p41_param_id)" (without the quotes ;-)
Here's my latest version plus an alternative, which both seem to work fine:
create or replace function "GET_PMR_LOV"
(pmr_id in NUMBER)
return VARCHAR2
is
cur INTEGER := DBMS_SQL.OPEN_CURSOR;
fdbk INTEGER;
l_pmr_id NUMBER(9) := pmr_id;
l_stmnt VARCHAR2(1000);
begin
DBMS_SQL.PARSE (cur, 'select pmr.lov_query from paramaters pmr where pmr.ID ' || '= :L_PMR_ID', DBMS_SQL.NATIVE);
DBMS_SQL.BIND_VARIABLE (cur, 'L_PMR_ID', l_pmr_id);
DBMS_SQL.DEFINE_COLUMN (cur, 1, l_stmnt, 1000);
fdbk := DBMS_SQL.EXECUTE (cur);
fdbk := DBMS_SQL.FETCH_ROWS (cur);
IF fdbk > 0 THEN
DBMS_SQL.COLUMN_VALUE (cur, 1, l_stmnt);
return (l_stmnt);
ELSE
return null;
END IF;
DBMS_SQL.CLOSE_CURSOR (cur);
END;
create or replace function "GET_PMR_LOV2"
(pmr_id in NUMBER)
return VARCHAR2
is
l_pmr_id NUMBER(9) := pmr_id;
l_stmnt VARCHAR2(1000);
BEGIN
EXECUTE IMMEDIATE 'select pmr.lov_query from parameters pmr where pmr.ID = :1'
INTO l_stmnt USING l_pmr_id;
return l_stmnt;
END;
The error-message remains the same, unable to bind :p41_param_id !

How to make use of a static or dynamic LOV in Desktop Instelligence reports

I want to use static LOV as well as dynamic LOV as a prompt for one of my report.
I have created a dynamic LOV but I dont know how to include it as a prompt to my reports. Please teach me the same.
For example I have two classes called COMPANY and EMPLOYEE in my universe. Each entry in the company class will have n number of employees in the employee class. My requirement is when I run the report it should prompt the user to select the company name which is a object in the COMPANY class. Based on the users's input the report should pull the employee data.
For this I have to create a COMPANY name LOV and this should be used in the 'Conditions' section of the Desktop Intellegence.
Please guide me for the same.

Hi,
LEt me know where u need the prompt object to be created in UNV or in report level.
In Unv:
Select Company name object-> double click it and in Select clause define as below
@variable('1. Enter Company Name'')
In Report level: Go to Query panel select Company class object in where clause and select required operator as LIKE OR IN LIST OR NOT IN LIST OR DIFFERENT FROM and select prompt and give some prompt message.
Cheers,
Suresh Aluri.

Dynamic lovs in parameter forms ... Is this possible?

Hi
I am using report developer 10g on windows xp.
I need a cascading prompt style dynamic LOVs in my report parameter form.
The first LOV displays a set of values (say for eg. dept list). The second LOV will display another list, based on the value chosen by the user in the first LOV (Eg. List of employee names in that dept).
My first LOV select statement may look like below for the user parameter say P_DEPT
select deptno from dept;
My sencod LOV select stmnt may look like below for the user parameter P_EMP
select ename from emp where deptno = :P_DEPT
Each time I try to set the second LOV, report developer complains "Bind variables not allowed in select statement"
Same error msg comes if I reference the first user parameter(P_DEPT) as a lexical parmaeter.
How do I acheive the above in report parameter form? Any help is appreciated greatly...
Thanks
Suma
Message was edited by: suma
user519129

Hi Brad,
Thanks for the reply. I had almost given up hope on receiving replies to this message.
I do agree that it is simpler (and a lot striaght forward) to just use forms to develop dynamic LOVs of cascading prompt style, that is required in my app. But in our shop, we have integrated forms and reports in such a way, that all the report parameters are handled by report developer's own parameter form, rather than coding a separate logic on the forms side to handle the report parameters(as this has to be done on the forms side for every report that we generate, We thought it would be better to use the reports developer to handle the parameter input and then pass the .rdf to forms app). Currently in all our app, the parameter form generated by the report developer is rendered as HTML form on the browser (when the concerned rdf file is called within the forms app) and by submitting this we get the report output)
Hence I am very keen to get this done somehow on the report developer side.
I do hope I get some input on this. Also, its a little surprising that such a simple feature is not readily avalibale in the report parameter form. I hope oracle report developer team is reading this message...:)
Thanks
Suma

Unable to create LOV (Select List)

As per the dev. guide, I am trying to create a Parameterized Report. When I tried the example given in the guide it works for the sample application. But when I try for my application (based on HR data) it does not work.
The steps I am following are same as dev. guide.
a) Create a New Page
b) Create the Query Region
Here I am giving the following query :
Select e.first_name,e.last_name,e.salary,e.job_id,d.department_name
from employees e, departments d
where e.department_id = d.department_id
and ( d.department_name = :P700_SHOW or :P700_SHOW = 'ALL' )
c) Adding an Item
But here when I select an Item as "Select List" and when I move to the page "Identify List of Values", here for the field Named LOV, it does not populate with any value, like it does for the sample application.
Also if i try giving the above query in the text box (List of Values query), it does not allow me to move ahead and throws follo. error:
" LOV query is invalid, a display and a return value are needed, the column names need to be different. If your query contains an in-line query, the first FROM clause in the SQL statement must not belong to the in-line query."
Can some help me on this? And also I am not able to understand, that for this exercise (parameterized report) why they have taken only sample application and not helped the dev. to create its own.

Hi,
You need to set up a "Named LOV" - go to Shared Components=>Lists of Values to create a LOV for the departments. This should be a "Dynamic" LOV, using the following SQL:
select department_name d, department_id r
from departments
order by 1
Give it a name like "DEPTS_LOV" and this will then be available for your select list.
Regards
Andy

Dynamic lov selection

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