Android Sqlite Multiple Joins with Alias does not return anything

I have this query:

 Cursor res = db.rawQuery("SELECT t1.Id, t2.EmpId FROM table1 t1 
                              LEFT JOIN table2 t2 ON t1.t2Id = t2.Id
                              LEFT JOIN table3 t3 ON t1.t3Id = t3.Id
                           WHERE t1.Id = 90909", null);

Now when I go

if(res.moveToFirst()){
   do{
        MyObject obj = new MyObject();
        obj.Id = res.getInt(res.getColumnIndex("t1.Id"));

        MyObjectAsProperty objProp = new MyObjectAsProperty();
        objProp.EmpId = res.getInt(res.getColumnIndex("t2.EmpId"));
   }while(res.moveToNext());
}

The objProp.EmpId returns nothing (or 0). I looked at the cursor columns and it's Fields basically did not include the table alias names. How do I go about getting the values of those aliased fields?

Thanks!

EDIT

Apologies. I forgot to add that if for example it's referencing the same other table multiple times with the same field.

Here's updated query

Cursor res = db.rawQuery("SELECT t1.Id, t2.EmpId, t2b.EmpId FROM table1 t1 
                                  LEFT JOIN table2 t2 ON t1.t2Id = t2.Id
                                  LEFT JOIN table2 t2b ON t1.t2bId = t2b.Id
                               WHERE t1.Id = 90909", null);

if(res.moveToFirst()){
       do{
            MyObject obj = new MyObject();
            obj.Id = res.getInt(res.getColumnIndex("t1.Id"));

            MyObjectAsProperty objProp = new MyObjectAsProperty();
            objProp.EmpId = res.getInt(res.getColumnIndex("t2.EmpId"));

            MyObjectAsProperty objProp2 = new MyObjectAsProperty();
            objProp2 .EmpId = res.getInt(res.getColumnIndex("t2bId.EmpId"));
       }while(res.moveToNext());
    }