title: Oracle SQL Developer 3.1.07 extra spaces between characters using listagg
body: <p>I am using SQL Developer 3.1.07 on an 11g database
  When I use listagg to extract multiple values from a field I get a space between each character in the results for the listagg column. The query returns all the values I expect to see, it's just the extra spaces that are driving me nuts. Any thoughts?</p>
  
  <p>Here is one query that I have used, but it happens everytime I use listagg in a query: </p>
  
  <pre><code>select a.personnum Emp_ID
        , a.personfullname Name
        , a.companyhiredtm Hire_Date
        , a.employmentstatus Status
        , a.employmentstatusdt Status_Date
        , h.Supervisor, h.Agency 
  from vp_employeev42 a
    left outer join (select f.personid
                             , listagg (g.personcstmdatatxt, ',') within group  
                                (order by g.customdatadefid) Supervisor 
                      from vp_employeev42 f
                      left outer join personcstmdata g 
                          on f.personid = g.personid
                       where f.personnum like 'T%' 
                       and f.homelaborlevelnm3 = '1872'
                       and (g.customdatadefid = '1' 
                               or g.personcstmdatatxt is null)
                       group by f.personid) h
            on a.personid = h.personid
    left outer join (select f.personid
                        , listagg (g.personcstmdatatxt, ',') 
                                within group (order by g.customdatadefid) Agency
                     from vp_employeev42 f
                       left outer join personcstmdata g 
                             on f.personid = g.personid
                      where f.personnum like 'T%' 
                      and homelaborlevelnm3 = '1872' 
                      and (g.customdatadefid = '3' 
                                or g.personcstmdatatxt is null)
                        group by f.personid) h 
        on a.personid = h.personid   
  where personnum like 'T%' 
  and homelaborlevelnm3 = '1872' 
  order by personnum;
  </code></pre>
  
  <p>Here are the results I get:</p>
  
  <pre><code>EMP_ID,NAME,HIRE_DATE,STATUS,STATUS_DATE,SUPERVISOR,AGENCY
  T98999,Lxxxxm, Lxxxn,20-SEP-12,Active,20-SEP-12,, S t a f f m a r k
  
  T98989,Fxxxxn, Dxxxxa,10-DEC-12,Active,10-DEC-12,, S t a f f m a r k
  
  T99989,Hxxxs, Cxxxxxa,02-OCT-12,Active,02-OCT-12,, S t a f f m a r k
  T99999,Hxxxs, Dxxxn,30-JAN-12,Terminated,21-MAY-12, C x x x x x x x x x r   T x x x x r, P R O L O G I S T I X
  </code></pre>