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update year in date column

update year in date column

2004-03-23       - By Wolfgang Breitling

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

Just subtract 1200 months from the dates:

SQL > alter session set nls_date_format= 'yyyy-mm-dd hh24:mi:ss ';

Session altered.

SQL > select add_months(to_date( '2099-03-31 15:24:58 ', 'yyyy-mm-dd
hh24:mi:ss '),-1200) from dual;

ADD_MONTHS(TO_DATE(
-- ---- ---- ------
1999-03-31 15:24:58

At 01:00 PM 3/23/2004, you wrote:

>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
>
>
>
>__ ____ ____ ____ ____ ____ ______
>Do you Yahoo!?
>Yahoo! Finance Tax Center - File online. File on time.
>http://taxes.yahoo.com/filing.html
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Wolfgang Breitling
Oracle7, 8, 8i, 9i OCP DBA
Centrex Consulting Corporation
http://www.centrexcc.com

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