Date issue with oracle

Question

Hi All,
which one I should assume correct one, is there any way to find the correct date.
The following function returns 08/01/2097
select to_char(maturity_dt, 'DD-MON-RRRR HH24:MI:SS') from Product_bak where product_id = 11671877
The following function returns 08/01/1997
select to_char(to_date(maturity_dt, 'DD-MON-RRRR HH24:MI:SS'), 'DD-MON-RRRR HH24:MI:SS') from product_bak where product_id = 11671877
The data type of the col maturity_dt is date.
Regards,
aak
Edited by: user605246 on Jan 6, 2010 2:28 AM

Answer 1

Hi Massimo,
Sorry i disagree, it does nto have to do with 2 or 4 digit year but with if the nls parmater is YY and RR.
Here is what i have:
select * from v$nls_parameters
/* o/p*/
PARAMETER     VALUE
NLS_LANGUAGE     AMERICAN
NLS_TERRITORY     AMERICA
NLS_CURRENCY     $
NLS_ISO_CURRENCY     AMERICA
NLS_NUMERIC_CHARACTERS     .,
NLS_CALENDAR     GREGORIAN
NLS_DATE_FORMAT     DD-MON-RR   /* year is still 2 digit */
NLS_DATE_LANGUAGE     AMERICAN
NLS_CHARACTERSET     WE8MSWIN1252
NLS_SORT     BINARY
NLS_TIME_FORMAT     HH.MI.SSXFF AM
NLS_TIMESTAMP_FORMAT     DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_TZ_FORMAT     HH.MI.SSXFF AM TZR
NLS_TIMESTAMP_TZ_FORMAT     DD-MON-RR HH.MI.SSXFF AM TZR
NLS_DUAL_CURRENCY     $
NLS_NCHAR_CHARACTERSET     AL16UTF16
NLS_COMP     BINARY
NLS_LENGTH_SEMANTICS     BYTE
NLS_NCHAR_CONV_EXCP     FALSE
/* now run the select*/
select to_char(x,'DD-MON-yyyy') from test;
/* o/p*/
06-JAN-2010
05-JAN-2010
04-JAN-2010
03-JAN-2010So i still feel the o/p will have to use the format using RRRR
OP
Here is a intersting read for you to know the difference between the 2 date formats
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:96012348060
and
http://oracle.ittoolbox.com/groups/technical-functional/oracle-dev-l/difference-between-yyyy-and-rrrr-format-519525
Cheers!!!
Bhushan