Subquery in pivot_in_clause gives an error in 11g

Question

Hi,
according to the 11g sql documentation a subquery is allowed in pivot_in_clause
http://download.oracle.com/docs/cd/B28359_01/server.111/b28286/statements_10002.htm here's is the pivot_in_clause syntax.
When I use a subquery I get an error. What am I doing wrong?
Without a subquery, everything works fine.
DB version is 11.1.0.6
SQL> with t as (select 1 id from dual
  2             union all
  3             select 2 from dual)
  4  select * from t pivot(sum(id) for id in (1,2));
         1          2                                                          
         1          2                                                          
SQL>
SQL> with t as (select 1 id from dual
  2             union all
  3             select 2 from dual)
  4  select * from t pivot(sum(id) for id in (select level from dual connect by level<3));
select * from t pivot(sum(id) for id in (select level from dual connect by level<3))
ERROR at line 4:
ORA-00936: missing expression Thanks,
Ants

Answer 1

So .. is there a way to convert the SQL below so that it CAN work?
with t as (select 1 id from dual
2 union all
3 select 2 from dual)
4 select * from t pivot(sum(id) for id in (select level from dual connect by level<3));
Thanks in advance for any assistance.