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Update Month,Day,Year in SQL Datetime field

Posted on 2011-03-21
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Last Modified: 2012-05-11
Hello Experts,

How can I update Month,Day and Year in Datetime field , I'm using SQL server 2005.

Some weird datetime record entry in database messed up my reports, the time entry is correct.But date is wrong.

I got this '2100-01-01 10:05:00', it needs to be '2011-03-21 10:05:00'
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Question by:ASPDEV
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12 Comments
 
LVL 32

Expert Comment

by:Ephraim Wangoya
ID: 35181711

update table1
set datefield = '2011-03-21 10:05:00'
where datefield = '2100-01-01 10:05:00'
0
 

Author Comment

by:ASPDEV
ID: 35181719
But I have nearly 100's of them.
0
 
LVL 25

Expert Comment

by:Lee Savidge
ID: 35181732
Are all the dates set to the same or are they all just very much incorrect?
0
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Author Comment

by:ASPDEV
ID: 35181748
Most of them are set to year 2100 and 2099.
0
 
LVL 25

Expert Comment

by:Lee Savidge
ID: 35181765
And they all need to be set to the 21st March 2011?
0
 

Author Comment

by:ASPDEV
ID: 35181791
Correct.
0
 
LVL 32

Expert Comment

by:Ephraim Wangoya
ID: 35181806


update table1
set datefield = '2011-03-21' + ' ' + CONVERT(varchar(8), @mydate, 114)
where CONVERT(varchar(10), datefile, 120) = '2100-01-01'
or CONVERT(varchar(10), datefile, 120) = '2099-01-01'
0
 
LVL 25

Expert Comment

by:Lee Savidge
ID: 35181812
update mytable set mydate = dateadd(dd, DATEDIFF(dd, mydate, '2011-03-21'), mydate)
0
 
LVL 25

Expert Comment

by:Lee Savidge
ID: 35181826
Mine needs testing :) Not in front of SQL Management Studio to test!
0
 
LVL 32

Expert Comment

by:Ephraim Wangoya
ID: 35181843
Did'nt clean up properly
replace @mydate with datefield

update table1
set datefield = '2011-03-21' + ' ' + CONVERT(varchar(8), datefield, 114)
where CONVERT(varchar(10), datefile, 120) = '2100-01-01'
or CONVERT(varchar(10), datefile, 120) = '2099-01-01'
0
 
LVL 32

Accepted Solution

by:
Ephraim Wangoya earned 500 total points
ID: 35181858
Sorry, my typing is out of whack

update table1
set datefield = '2011-03-21' + ' ' + CONVERT(varchar(8), datefield, 114)
where CONVERT(varchar(10), datefield, 120) = '2100-01-01'
or CONVERT(varchar(10), datefield, 120) = '2099-01-01
0
 

Author Closing Comment

by:ASPDEV
ID: 35182115
Thanks.
0

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