Syntax is not correctly checked while using keep dense_rank

Question

Hi,
Looks like Oracle doesn't check the syntax correctly, "order" is not required to write before "by" in keep (dense_rank...).
DB version 11.1.0.6
SQL> with t as (select 5 val, 2 val2 from dual union all
  2  select 1 val, 9 val2 from dual union all
  3  select 2 val, 9 val2 from dual)
  4  select sum(val) keep (dense_rank last blabla by val2) total_9 from t;
   TOTAL_9
         3Looks like a bug or what?

Answer 1

Did you get any error in 10g?
It is running in my 10g, too.
I've to modify your query as i'm running this in Oracle 8 client. ;)
satyaki>
satyaki>select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE    10.2.0.1.0      Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
real: 30
satyaki>
satyaki>
satyaki>
satyaki>select sum(val) keep (dense_rank last blabla by val2) total_9
  2  from (
  3         select 5 val, 2 val2 from dual union all
  4         select 1 val, 9 val2 from dual union all
  5         select 2 val, 9 val2 from dual
  6     );
  TOTAL_9
        3
real: 11
satyaki>
satyaki>
satyaki>with tt
unknown command "with tt" - rest of line ignored.
satyaki>as (
unknown command "as (" - rest of line ignored.
satyaki>       select 5 val, 2 val2 from dual union all
  2         select 1 val, 9 val2 from dual union all
  3         select 2 val, 9 val2 from dual
  4     )
  5  select sum(val) keep (dense_rank last blabla by val2) total_9
  6  from tt;
ERROR at line 4:
ORA-00933: SQL command not properly ended
real: 70
satyaki>Regards.
Satyaki De.