Dynamic LOV based on report column

HI,
I've a standard report with Two columns. Column1 is standard Report Column and Column 2 is a LOV based on an SQL Query.
Now I need to filter the LOV (add a where clause) based on the value in the column1.
For example, consider Column1 as "country" and column2 as "state". so the in column2(LOV), user should see only the list of states belongs to the corresponding country(Column1)
Please note that the report is based on an SQL query
Any clue on how to do this.
I'm using APEX4.1.
Thanks in advance
Prasanth

I think you are looking for this https://forums.oracle.com/forums/search.jspa?threadID=&q=tabular+form+cascade&objID=f137&dateRange=all&userID=&numResults=15&rankBy=10001
please search the forum before posting a question
Thanks

Similar Messages

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 !

Dynamic LOV based on Current user

How do i make a dynamic LOV based on the user id of the current user.
Also how to insert values from a form into a database
Can anyone please help me out.
Thanks

Use portal.wwctx_api.get_user to get the currently logged in userid.
The simplest example of a form manipulating data is to create the form based on a table. All DML works automagically. You can base your form on a procedure with dummy columns and do your own DML if you wish. Lots more flexibility that way...

Master Details form (LOV based on Detail Column of Join Condition)

I have created a master detail form where user_id is joining master and details.
I have created one dynamic lov based on child user_id in detail block to diplay all user who works under current user.
Problem : When i want to select Insert detail action in detail block the dynamic lov should read the user_id which is going to be inserted when you press Save button. Means as its not getting populated till one click on save button my lov is not getting refereshed.
Please advice what should i do.
Thanks
Bakulesh

I solved myself by modifing some guru's script from this forum little bit. I am adding here for feedback or use to any.
htp.p('<script language="JavaScript1.3">
function getMstFieldValue(form,fieldName)
var objName = "";
var tmp = "";
var dAction = "";
var sel_idx = 0;
var cnt = 0;
var instance = 0;
var slicedName;
var fillData = new Array();
var blkname;
for(var i = 0; i < form.length; i++)
slicedName = form.elements.name.split(".");
tmp = slicedName[2];
instance = parseInt(slicedName[3],10);
blkname = slicedName[1];
//alert("Fld "+tmp+" blk "+blkname+ " instance "+instance);
if (!tmp)
continue;
objName = tmp;
if (objName == fieldName && blkname == "MASTER_BLOCK")
return form.elements[i].value;
function setDetFieldValue(form,fieldName,value)
var objName = "";
var tmp = "";
var dAction = "";
var sel_idx = 0;
var cnt = 0;
var instance = 0;
var slicedName;
var fillData = new Array();
var blkname;
for(var i = 0; i < form.length; i++)
slicedName = form.elements[i].name.split(".");
tmp = slicedName[2];
instance = parseInt(slicedName[3],10);
blkname = slicedName[1];
//alert("Fld "+tmp+" blk "+blkname+ " instance "+instance);
if (!tmp)
continue;
objName = tmp;
if (objName == fieldName && blkname == "DETAIL_BLOCK")
form.elements[i].value = value;
</script>');
thanks
Bakulesh

No dynamic LOV in a PopUP column?

Hi,

I've a named LOV-query for a column of the detail report on a master-detail-form.

the column is displayed as Popup LOV (named LOV) with that query:

IF :P306_KAT = 'KUNDE' THEN RETURN IF :P306_KAT = 'KUNDE' THEN RETURN

'SELECT name1 d, kunnr r FROM kunden_t ORDER BY 1';

ELSIF :P306_KAT = 'EXTWG' THEN RETURN

'SELECT ewbez d, extwg r FROM warengruppen_t order by 1';

ELSIF :P306_KAT = 'MATKL' THEN RETURN

'SELECT wgbez d, matkl r FROM matklassen_t order by 1';

ELSIF :P306_KAT = 'LAND' THEN RETURN
'SELECT land d, kz r FROM laender_t order by 1';

END IF;

I've no chance to get it work.

when I change display to select list (named LOV)

everything is fine. (the same query)

I'm rather confused about that and need help.

lothar

Hi Patrick,

I get the following error message:

ORA-06550: Zeile 11, Spalte 9: PLS-00103: Fand das Symbol ";" als eines

der folgenden erwartet wurde: begin case declare end exception exit for

goto if loop mod null pragma raise return select update while with

<< close current delete fetch lock insert open rollback savepoint

set sql execute commit forall merge pipe Das Symbol "exit" ersetzte ";", um fortzufahren.

Error ERR-1000 Unable to determine List of Values from "declare function x return varchar2

is begin IF :P306_KAT = 'KUNDE' THEN RETURN ' select distinct (k.name1 ||''---''||d.kndnr)

d, d.kndnr r ' ||' from db_t d join kunden_t k on (d.kndnr = k.kunnr) ' ||'

where to_number(d.vkorg) = 3 order by 1'; ELSIF :P306_KAT = 'EXTWG' THEN RETURN

'SELECT ewbez d, extwg r FROM warengruppen_t order by 1'; ELSIF :P306_KAT = 'MATKL'

THEN RETURN 'SELECT wgbez d, matkl r FROM matklassen_t order by 1'; ELSIF :P306_KAT = 'LAND'

THEN RETURN 'SELECT land d, kz r FROM laender_t order by 1'; END IF; return null; end;

begin wwv_flow_utilities.g_query := x; end;".

Error in init lov: ORA-00900: Ungültige SQL-Anweisung p_lov:IF :P306_KAT = 'KUNDE' THEN RETURN

' select distinct (k.name1 ||''---''||d.kndnr) d, d.kndnr r ' ||' from db_t d

join kunden_t k on (d.kndnr = k.kunnr) ' ||' where to_number(d.vkorg) = 3 order by 1';

ELSIF :P306_KAT = 'EXTWG' THEN RETURN 'SELECT ewbez d, extwg r FROM warengruppen_t order by 1';

ELSIF :P306_KAT = 'MATKL' THEN RETURN 'SELECT wgbez d, matkl r FROM matklassen_t order by 1';

ELSIF :P306_KAT = 'LAND' THEN RETURN 'SELECT land d, kz r FROM laender_t order by 1';

END IF; wwv_flow_security.g_security_group_id:725803405601837wwv_flow_security.g_curr_flow_security_group_id

:725803405601837 Unable to bind ":P306_KAT" Unable to initialize query.

RETURN ' select distinct (k.name1 ||''---''||d.kndnr) d, d.kndnr r ' ||' from db_t d

join kunden_t k on (d.kndnr = k.kunnr) ' ||' where to_number(d.vkorg) = 3 order by 1';

ELSIF :P306_KAT = 'EXTWG' THEN RETURN 'SELECT ewbez d, extwg r FROM warengruppen_t order by 1';

ELSIF :P306_KAT = 'MATKL' THEN RETURN 'SELECT wgbez d, matkl r FROM matklassen_t order by 1';

ELSIF :P306_KAT = 'LAND' THEN RETURN 'SELECT land d, kz r FROM laender_t order by 1'; END IF;

wwv_flow_security.g_security_group_id:725803405601837wwv_flow_security.g_curr_flow_security_group_id:725803405601837

Unable to bind ":P306_KAT" Unable to initialize query.

btw: I'm working with Apex-Version 2.0.0.00.49, database 10gR2

exact the same LOV works when I change from Popup to select list.

Unfortunately I need a popup window, because in production a result set

will have several hundred rows.

lothar

Dynamic Lov in Tablular Report

We have been working on a tabular report region within a master-detail form where the values populated in a drop down field are based on the value chosen from previous field. Thought we saw info on how to do this with javascript (without submitting the form from the previous field) earlier on this forum, but we can't find it now. Have read several posting dealing with AJAX but thought this one only included javascript. Any help would be appreciated.
Thanks,
Amber and Casey

See http://apex.oracle.com/pls/otn/f?p=24317:9 and the referenced forum thread for usage instructions

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

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!

Popup list manager and dynamic LOV

I'm stumped, stuck and thought I was doing something simple. Here's what I have:
1) Checkbox dynamically built (P3_CHECKBOX)
2) A hidden field to store the checkbox values (P3_CHECKED)
3) A popup list manager based on the hidden field.
I am using JavaScript to populate the P3_CHECKED whenever P3_CHECKBOX is changed. However, my dynamic LOV based on the hidden field always returns no rows. The SQL for the LOV is:
select application_role, role
from roles_view
where '%'||application||'%' LIKE to_char(:P3_CHECKED) order by 1
Am I missing something simple? I know the hidden field is getting populated because if I change to field to text, I see the data change. There is also data in the table because executing the query using the data in P3_CHECKED returns the expected rows.
Any help would be appreciated.
Mike

Mike,
The lov query accesses the value of P3_CHECKED from session state. That isn't stored in session state until the page is submitted.
Scott

Populating a report column(Popup lov) based on the other column.

I have a report where a column that is a Popup Lov(Query based LOV) needs to be populate based on another column in the same report.
For example, if the column1 has query based lov select statment "select a,b,c from tab where d= *<<col2>>* ".
I would like to have a sql query based on the values of second report column. Any ideas are appreciated.
Regards,
madhu

You can do that only if you use apex_item. See this example as a reference:
http://apex.oracle.com/pls/otn/f?p=31517:176
In this example the second select list query depends on the first select list column value.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://apex.oracle.com/pls/otn/f?p=31517:1
-------------------------------------------------------------------

Bug: Report Column based on LOV character string buffer too small error

When using a column type of "Display as Text (based on LOV, does not save state)" with a result set that is rather large causes a character or string buffer too small oracle error.
See the below page for an example.
The example page below has a single report off a table called "HUGE_TABLE" which has two columns: display and code
Code contains a number between 0 and 100000.
Display contains the number in code appended to a block of text.
When I display the report with no Display As Text (based on LOV does not save state) it displays fine.
If I make the "Code" column display as text based on LOV and make the LOV
"SELECT display, code FROM huge_table"
I get the error you see on the page.
http://apex.oracle.com/pls/otn/f?p=32149:1
Thanks.

Thanks for your help Scott.
So from what I've gathered from my own tests and the discussions you linked me to the LOVs based on SQL queries are being converted into "static LOV" strings before being used.
As such they are limited to the PL/SQL VARCHAR2 max size of 32767
Which means given the static reduction of the string 'STATIC:' that we have 32760 characters left.
Which is where your SUM( LENGTH( display ) + LENGTH( return ) + 2 ) comes in.
In short, if:
sum( length( display ) + length( return ) + 2 ) + 7 > 32767
would evaluate to true then you have a problem. :)
I'll use this to track down my problems and switch them over to inline queries.
Thanks.
Cheers,
Joe

Urgent - Report Column based on LOV - Value not found in LOV

Hi All,
Recently, we have upgraded to HTMLDB 2.0 from HTMLDB 1.5.
I have a SQL report. One of the columns is based upon LOV - Display as Text (Based on LOV, does not save state).
For the "Ids" of the report, it should display the corresponding "Names" from the LOV.
But, for the cases, where no record exist in LOV for some Id, then it is directly showing the Id instead of "-" (which i have specified in Display Null Text) in the report column attributes.
Before upgrade, it was working fine.
Any idea where is the issue.
Please help.
Thanks in advance,
Monika

Hi,
Can anybody help me in sorting out this issue please.
For your reference, i have made a test case on
http://apex.oracle.com/pls/otn/f?p=20451:4:3519837362944582:::::
Here, there are 2 tables
1. MY_EMP_COUNTRY(emoid, empname, cntry_id)
2. MY_COUNTRY_LOOKUP(id, name,active)
LOV is created on table 2
select name d, id r
from my_country_lookup
where active = 'Y'
And, on the page a SQL report is created
select empname, cntry_id
from my_emp_country
where, cntry_id is based upon the LOV.
Since, in lookup table, cntry_id = 4 is set inactive, it is not picked up by the LOV and hence on the report instead of showing the NULL text it is showing the cntry_id (4).
The attributes of report column cntry id -
Named LOV = CNTRY_LOV
Display Null = YES
NULL text = -
Display Extra Value = YES
Am I missing anything.
thanks,
Monika

Dynamic LOV in universe based report

Hi,
My question is simple.
In Crystal Reports ,is it possible to have a dynamic LOV for the prompts when the report is based on universe? When ever the user chooses the drop down in prompt page, he should see only his values in LOV. This works in WebI.
I read from the forum that in crystal, this can only be possible with Business View. Is this true?
If i use Business view and the user opens the report in Infoview, does he needs DSN to use the connection i have created in Business View to refresh the LOV dynamically?
Please suggest a solution for dynamic LOV as this started as a simple issue and i'm breaking my head to solve this!!

Once you create any dynamic parameter in crystal which is using direct database connection and if you publish that report to server then it automatically generates a list of values using business view in repository in which the business view uses the same connection what you have used for the report. Now when you try to run the report in info view first it prompts for LOV from repository. Before refreshing the LOV it prompts to connect to your database and if you don't want this prompt to popup everytime then open the connection in business view manager and in the properties select never prompt by giving the database credentials.
You can also create LOV using universe as datasource. To get the updated list you need to change the registry key settings like this
select the option Always refresh before use in the universe properties and change the registry like this
HKEY_LOCAL_MACHINE\software\business objects\suite 11.5\crystal reports\database\AlwaysRefreshUniverseLOV
Type: String
Recognized Values: Yes, 1
HTH
Raghavendra.G

Dynamic LOV in report based on universe

Hi experts,
I have found the following thread and I understand that I can change the registry to have dynamic LOV for BOXI R2:
http://scn.sap.com/thread/1524666
Is it possible for BI4.1?
Also is it possible for CR4E with .unx source?
Regards,
Gordon

OK. The Path for 4.0 would be:
32-bit machine:
HKEY_LOCAL_MACHINE\SOFTWARE\SAP BusinessObjects\Suite XI 4.1\Crystal Reports\Database
64-bit machine:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\SAP BusinessObjects\Suite XI 4.1\Crystal Reports\Database
And then create the string key per the suggestion in that thread.
-Abhilash

How to accessing current row report column value in Lov Query?

Hi,
which access methods (eg. bind variables, substitutions, ...) for getting the current row report column value can be used in the "Lov Query" property of a report column?
As what I know of and what I have read on the forum there are no bind variables for the report columns. For the "Link Text" property it seems that the column values exist as substitution strings (#COLUMN_NAME#). But they don't work in the Lov Query. => And would be good because of a hard parse each time the Lov query is executed.
The following post (Re: Simulating a correlated sub query in lov
is showing a solution to use package variables for temporary storage of the referenced value, but the only problem with that solution is that if a new record is added with the "Add rows to tabular form" process the package variable still contains the value from the last queried row! Is there a way (variable, APEX package, ...) to determine if the lov query is executed for a new record so that the package can return null?
I know that I could write the package in a way that the value is immediately cleared when lov_pkg.keyval is called (one time read), but then I would have to create several variables if I'm accessing the value multiple times in the query or in another query => I think an one time read solution would be very obscurely.
Thanks for your help
Patrick
http://inside-apex.blogspot.com

Hi Patrick,
I agree that it's a waste to continually use Ajax to go back to the server to get the contents of a dynamic select list.
There are no bind variables for any row item - but what you do have, as per my previous post, is the value of the data entered by the user in the first row. You can pass this into your application process (using get.add("VARIABLENAME", value)), which can use it to retrieve the correct LOV in your Ajax code - this will give you a "bind variable" that your process can use.
What you could do, however, is generate hidden select lists on your page - one for each possible LOV list and replace the contents of the new row's select list with the contents of the appropriate hidden select list. This is easy to do with javascript (using innerHTML functions). Obviously, though, the usefulness of this depends on the number and size of the select lists.
Even if you don't generate them to start with, you can keep a copy of any select lists returned by Ajax in the DOM for use on new rows. So, if you have retrieved a select list, you will have a copy of it in DOM which you can then copy into the new row. If you don't have the list in DOM, use Ajax to get it, store a copy of it and copy it into the new row.
Which method you use will depend on the number/size of select lists needed. If they are few in number and/or size, I would suggest generating hidden lists. If they are large, use Ajax to get them once, store them and then retrieve them from the DOM when needed.
There is another thread here where Arie recommends going to the server every time to make sure you get the most up-to-date data for the lists. If you want to follow this advice, for this reason, use get.add("VARIABLENAME", value) to pass the value to your process. If this is not an issue, you can use one of the other methods I outlined above.
Regards
Andy

Dynamic LOV based on report column

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