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select to_date('10/8/2009 8:22:20','dd/mm/yyyy  hh24:mi:ss' ) from DUAL;

SQL code:
select to_date('10/8/2009 8:22:20 PM','dd/mm/yyyy hh:mi:ss AM','NLS_DATE_LANGUAGE = American') from dual;


SQL code:
09:38:34 scott@TUNGKONG> select to_date('10/8/2009 8:22:20 PM','dd/mm/yyyy hh:mi:ss AM','NLS_DATE_LANGUAGE = American') from dual;

TO_DATE('10/8/
--------------
10-8ÔÂ -09

ÒÑÓÃʱ¼ä: 00: 00: 00.00
09:38:44 scott@TUNGKONG> select to_char(to_date('10/8/2009 8:22:20 PM','dd/mm/yyyy hh:mi:ss AM','NLS_DATE_LANGUAGE = American'),'yyyy-mm-dd hh24:mi:ss') from dual;

TO_CHAR(TO_DATE('10
-------------------
2009-08-10 20:22:20

ÒÑÓÃʱ¼ä: 00: 00: 00.00


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