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Updating a date field in PL/SQL

Posted on 2008-10-31
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Last Modified: 2013-12-19
I would like to know the easiest way to update a date field in pl/sql.  I have a date field that was imported incorrectly from an .csv file into my oracle table.

The date field came in as follows:
08/24/0001 which should be 08/20/2001
09/01/0098 which should be 09/01/1998

Please help.
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Question by:ewgf2002
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3 Comments
 
LVL 10

Accepted Solution

by:
dbmullen earned 350 total points
ID: 22854946
assuming there are no rows in the future (ie.. 2009, 2010, 2011...)

update tablea
set date_column = add_months(date_column,12 * 2000)
where to_char(date_column,'yyyy') between '0000' and '0008'
;

update tablea
set date_column = add_months(date_column,12 * 1900)
where to_char(date_column,'yyyy') between '0009' and '0099'
;

commit;
0
 
LVL 9

Assisted Solution

by:jamesgu
jamesgu earned 150 total points
ID: 22855017
update a
set d = case when d > to_date('01/01/0050') then add_months(d, 1900 * 12)
else add_months(d, 2000 * 12)
end
;
--d is the column name

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Author Closing Comment

by:ewgf2002
ID: 31512222
I wish to thank you both.  dbmullen's solution narrowed the results to what i needed.  both solutions will work thought.  thanks again.
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