Query Selection & Filteration.

Question

Hi Guys,
I want to filter in a Query those Records in which values in a specific column has more than one occurence in the result set.
For Example the table looks like
ID Dated
001 01-Jul-2009
001 02-Jul-2009
002 03-Jul-2009
002 04-Jul-2009
003 03-Jul-2009
003 05-Jul-2009
003 06-Jul-2009
004 01-Jul-2009
Now i want to Build a Query who only shows following result
001 01-Jul-2009
001 02-Jul-2009
002 03-Jul-2009
002 04-Jul-2009
003 03-Jul-2009
003 05-Jul-2009
003 06-Jul-2009
this query should not show 004 because it occurs only once in the result set.
Pls help.

Answer 1

another way.
  1  with t as(
  2  select '001' col, to_date('01-Jul-2009')col1 from dual
  3  union all
  4  select '001',to_date('02-Jul-2009') from dual
  5  union all
  6  select '002',to_date('03-Jul-2009') from dual
  7  union all
  8  select '002',to_date('04-Jul-2009') from dual
  9  union all
10  select '003' ,to_date('03-Jul-2009') from dual
11  union all
12  select '003',to_date('05-Jul-2009') from dual
13  union all
14  select '003',to_date('06-Jul-2009') from dual
15  union all
16  select '004',to_date('01-Jul-2009') from dual)
17  select col,col1
18  from
19  (select count(col1) over(partition by col order by col)sr,col,col1 from t)
20* where sr>1
SQL> /
COL COL1
001 01-JUL-09
001 02-JUL-09
002 03-JUL-09
002 04-JUL-09
003 03-JUL-09
003 05-JUL-09
003 06-JUL-09
7 rows selected.