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update year in date column

update year in date column

2004-03-23       - By Mark Richard

Reply:     1     2     3     4     5     6     7     8     9     10     >>  





Barbara,

You could look at using the add_months() function... Just add -12,000
months like the statement below:

SQL > select sysdate, add_months(sysdate, -12000) from dual;

SYSDATE ADD_MONTHS(SYSDATE,-
-- ---- ---- ---- -- -- ---- ---- ---- --
24-mar-2004 08:42:07 24-mar-1004 08:42:07

Regards,
Mark.





Barbara Baker
<barbarabbaker@(protected) To: oracle-l@(protected)
oo.com > cc:
Sent by: Subject: update year in date column
oracle-l-bounce@(protected)
eelists.org


24/03/2004 07:00
Please respond to
oracle-l







OK, I 'm just going to bite the bullet and claim total
ignorance here and see if someone takes pity on me :(
(sad face a nice touch, eh?)

Someone has accidently updated 378 records in the
customer table. The date changed from 1999 to 2099.
I need to change just the year back to 1999 for these
records. (I 'd like to keep the time stamp, if
possible. The month and day are correct.) I looked
on metalink, google, and asktom. Some nice examples,
but not what I really need.

Thought I 'd be clever and subtract 1000 from the date.
This works, but I don 't know how to get it formatted
back into a date.

I 'd prefer just sqlplus, but will use pl/sql if
necessary.

Here 's what I 've done so far:
(solaris 9 oracle 9.2.0.4)

JServer Release 9.2.0.4.0 - Production

DOC > CUSNO CUSNAME
CRDATE
DOC >-- ---- -- -- ---- ---- ---- ---- ---- ---- --
-- ---- --
DOC > 798489 GILBERT, ROSS
09/16/2099
DOC > 826744 HOEFLER, MATT
10/08/2099
DOC > 795126 FORT, JOETTA
09/08/2099
DOC >*/

SQL >
SQL > ---select to_date(to_char(crdate, 'MM/DD/YYYY '))
from customer where cusno=798489;
SQL > ---update advdb.custtest_barb
SQL > ---set crdate= to_char(crdate, 'MM/DD/YYYY '))
SQL > ---from customer where cusno=798489;
SQL >
SQL > select
to_date(to_char(crdate, 'ddmmyyyy ')-1000), 'MM/DD/YYYY ')
2 from customer where cusno=798489;
select
to_date(to_char(crdate, 'ddmmyyyy ')-1000), 'MM/DD/YYYY ')

*
ERROR at line 1:
ORA-00923 (See ORA-00923.ora-code.com): FROM keyword not found where expected


SQL >
SQL >
SQL > --- these both work
SQL > select to_char(crdate, 'ddmmyyyy ') from
custtest_barb where cusno=798489;

TO_CHAR(
-- -----
16092099

SQL > select to_char(crdate, 'ddmmyyyy ') - 1000 from
custtest_barb where cusno=798489;

TO_CHAR(CRDATE, 'DDMMYYYY ')-1000
-- ---- ---- ---- ---- ---- ---
16091099

Thank for any assistance.

Barb



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