A little bit of help with Bind variables please

Question

Hi,
I am having a bit of trouble with bind variables I have been looking at the Dev guide and the forum to try and achieve this and it is still not happening for me, could anybody please help or point me in the right direction:
I have created a simple PersonVO with the basic query:
Select distinct full_name from xxml_people where person_id = :1
In the PersonVOImpl.java I have added the method:
public void initQuery(String personId)
Number person = null;
try
person = new Number(personId);
catch
(Exception e){}
setWhereClauseParam(1,person);
executeQuery();
Then in the PersonAM I have added the method:
public void initPersonQuery(String personId)
getPersonVO1().initQuery(personId);
I then call this method in my processRequest section of my page controller:
PersonAMImpl am = (PersonAMImpl) pageContext.getRootApplicationModule();
String personId = "581";
am.initPersonQuery(personId);
When I try and run this I get the error:
oracle.apps.fnd.framework.OAException: oracle.jbo.SQLStmtException: JBO-27122: SQL error during statement preparation. Statement: SELECT distinct full_name from xxml_absence_calendar where person_id = :1
java.sql.SQLException: ORA-01006: bind variable does not exist
Am I binding the variables correctly? Or am I making some stupid mistake?
I am ultimately looking to create a messageChoice where the logged in user will see a list of all organisations underneath him and the one level above. I plan to do this by passing the User’s Organisation name into a VO query using the organisation as a Bind Variable. I think once I have worked out how to bind variables this should be straight forward.
Many Thanks

Answer 1

Even though the parameter binding values may be same, you should never use the positional param more than once. So always go for the format
select distinct full_name from xxml_people where supervisor_id = :1
UNION
select distinct full_name from xxml_people where person_id = :2
--Shiv