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How to Delete Right 3 Characters from a string


How to Delete Right 3 Characters from a string

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//Ravi
//Ravi
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Hi,

I am trying to delete 3 characters from the right in a column. I can't find a function that will easily do that. The length of the string keeps changing. Below is some sample data. Please advise.

CA*461*NN
CA*461*NN
CA*461*NN
CA*463*NN
CA*463*NN
CCABM*100*01
CCART*100*01
CCART*100*01
CCICC*114*Z2
CCICC*Z2*Z2
CCLGA*110*01
CCLNG*100*01
CCLNG*100*01
CCLNG*102*01
CCSTD*103*01
CD*001*1S
CD*329*01
CD*329*31
CD*352*01
CD*352*01
CD*352*01
CD*352*01
CD*352*01
CD*352*01
CD*352*01
CD*352*01
CD*352*01
CS*762*51
CS*630*51
CS*772*61
SC*101D*01
SC*101D*02
SC*101*03
SC*101*04
SC*101D*05

------------
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Kingston Dhasian
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Try this if this works..

UPDATE Table SET Column = REPLACE( Column, RIGHT(Column, 3), '' )




Kingston Dhasian

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Lynn Pettis
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Does this help get you in the right direction?


declare @ TestStr varchar(32); -- to get this to post, I added a space between @ and TestStr, remove that space
set @TestStr = 'SC*101D*05';
select @TestStr = left(@TestStr, len(@TestStr) - 3);
select @TestStr;



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//Ravi
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Lynn,

Thanks. It worked. Here was the solution.

SELECT left (column_name, len(column_name) -3) FROM Table_Name

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LutzM
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DECLARE @v VARCHAR(30)
SET @v='CA*461*NN'
SELECT LEFT(@v,LEN(@v)-3)





Lutz
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Just for the record Kingston's suggestion works fine n'all
Ninja's_RGR'us
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Kingston Dhasian (1/22/2010)
Try this if this works..

UPDATE Table SET Column = REPLACE( Column, RIGHT(Column, 3), '' )




This won't work if the last 3 characters are used in the same sequence elsewhere in the string. I'd really go with the left(len)) option here.
drew.allen
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Sugsy (7/22/2011)
Just for the record Kingston's suggestion works fine n'all

Actually, it doesn't. It works as long as the last three characters aren't repeated anywhere else in the string, but will not work if the characters are repeated. For example, if the original string is "CH*012*01", Kingston's solution will produce "CH2" whereas the correct solution is "CH*012'

Drew

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Jeff Moden
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Sugsy (7/22/2011)
Just for the record Kingston's suggestion works fine n'all


Just for the record, it will also delete the wrong data if the right 3 occurs more than once in the string. Don't use it. ;-)

(Sorry, Kingston)

--Jeff Moden

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Gah... I've got to learn to read the rest of the posts first. Tow other folks basically said the same thing.

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Wink

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
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