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Remove first two characters and place in seperate field

Posted on 2015-01-23
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Last Modified: 2015-01-24
Hi,

Is it possible to remove the first two characters from a table column and place those characters in another separate field.
The fields are both VARCHAR.
Any help would be appreciated.
Thanks
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Question by:Morpheus7
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7 Comments
 
LVL 24

Expert Comment

by:Phillip Burton
ID: 40566062
Select myField, substring(myField,3,len(myField)-2) as FromCharacter3, substring(myField,1,2) as FirstTwoCharacters
from MyTable
0
 
LVL 51

Expert Comment

by:Vitor Montalvão
ID: 40566066
Sure:
UPDATE TableName
SET ColTwo = LEFT(ColOne,2),
   ColOne = RIGHT(ColOne,LEN(ColOne)-2),

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LVL 51

Accepted Solution

by:
Vitor Montalvão earned 1000 total points
ID: 40566070
ColOne is the field to remove the first two characters.
ColTwo is the field where those two characters will be placed.
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LVL 25

Assisted Solution

by:Lee Savidge
Lee Savidge earned 1000 total points
ID: 40566072
If the data has leading or trailing spaces, you may want to trim and you can avoid the rows that have no data in the field.

update mytable
set mycol2 = left(ltrim(rtrim(mycol1)), 2),
   mycol1 = right(ltrim(rtrim(mycol1)), len(ltrim(rtrim(mycol1))) - 2)
where ltrim(rtrim(isnull(mycol1, ''))) <> ''

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0
 
LVL 69

Expert Comment

by:Scott Pletcher
ID: 40566636
FYI, the separate column with only two characters would be more efficient as:
char(2)
rather than varchar(2).
0
 
LVL 50

Expert Comment

by:Lowfatspread
ID: 40567955
be aware that len will result in you losing trailing spaces from the column if that could be important to you.

you might want to use datalength instead which deals with numbers of bytes (which need to be divided by 2 if it is an NVARCHAR column)
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Author Closing Comment

by:Morpheus7
ID: 40568010
Thanks to all
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