Limit list of values

Question

I have a field in a form based on which value i have to filter a list of values. So in the query for the record set i have filtered the query using the where condition like where column_name = :block.item. So that would filter the LOV based on that value in that field. My problem is that that there can be multiple rows for that block and the same item used to filter can have multiple values bcoz of multiple rows. Now how do i pass these different values to the record set and filter the LOV.
For ex if the value is for city fields i could have 2 different rows with one value for city being NY and second row being CA. NOw i have to dynamically pass these city values to a list of value and filter the LOV.

Answer 1

Hello,
It is better to create the record group dynamically at runtime to loop through all detail rows and create one IN clause for all the values.
What i mean is it can be for example like this...
DECLARE
  vSqlStr VARCHAR2(4000);
  vInClause VARCHAR2(1000);
BEGIN
  vSqlStr:='SELECT empno, ename FROM emp WHERE empno IN (';
  FOR LOOP ...
    vInClause:=vInClause||:form_field_name||',';
    NEXT_RECORD;
  END LOOP;
  vInClause:=SUBSTR(vInClause,1,LENGTH(vInclause)-1);
  vSqlStr:=vSqlStr||vInClause||')';
  -- Now create the record group using the above query and assign to that LOV.
  -- See forms help for CREATE_GROUP_FROM_QUERY
  -- And use SET_LOV_PROPERTY to set the created record group for that LOV.
END;-Ammad