select_having.out 370 Bytes
QUERY: SELECT d1, count(*) FROM DATETIME_TBL
  GROUP BY d1 HAVING count(*) > 1;
d1                          |count
----------------------------+-----
Thu Jun 13 00:00:00 1957 PDT|    2
Mon Feb 10 09:32:01 1997 PST|    3
Mon Feb 10 17:32:01 1997 PST|   13
Sun Feb 16 17:32:01 1997 PST|    2
Sat Mar 01 17:32:01 1997 PST|    2
invalid                     |    2
(6 rows)