String Manipulation

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String Manipulation

Rich Collins

Newbie

Points: 8
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August 30, 2005 at 6:14 pm

#187247

Real simple issue ! All I am trying to do is build up string value 1 char at a time .

Set @Last_Match_Name = (+ @Last_Match_Name + @Last_Char)

Does not work !

If @Last_Match_Name contains 'AB' (from prior @Last_Char's)

and current value of @Last_Char = 'C'

I expected to see @Last_Match_Name value = 'ABC' ,

instead I get NULL ?

Help

BennyG

Viewing 4 posts - 1 through 3 (of 3 total)

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sushila SSC-Dedicated Points: 35293 More actions · Answer 1

..this seemed to work for me...not sure what you have in your variable declarations...?!?!

declare @varName varchar(10)
declare @Last_Match_Name varchar(10)
declare @Last_Char char(1)
declare @ctr tinyint

set @ctr = 1
set @Last_Match_Name = ''
set @varName = 'abcdefgh'

while @ctr < 10
begin
	set @Last_Char = substring(@varName, @ctr, 1)
	Set @Last_Match_Name = (+ @Last_Match_Name + @Last_Char)
	set @ctr = @ctr + 1
	continue
end

select @Last_Match_Name as concatenatedColumn

**ASCII stupid question, get a stupid ANSI !!!**

Julian Kuiters SSCertifiable Points: 6585 More actions · Answer 2

First, make sure that @Last_Match_Name is big enough to hold the longer string.

Without knowing the surrounding code, there's two solutions:

If you are in a loop of some sort:

IF @Last_Char IS NOT NULL

Set @Last_Match_Name = @Last_Match_Name + @Last_Char

If @Last_Char is from a table you could try:

SELECT @Last_Match_Name = @Last_Match_Name + Last_Char_Column

FROM MyTable

WHERE Last_Char_Column IS NOT NULL

Julian Kuiters
juliankuiters.id.au

Rich Collins Newbie Points: 8 More actions · Answer 3

Rich Collins

Newbie

Points: 8

August 31, 2005 at 9:48 am

#586543

Thanks Guys.

The check for NULL was the answer !

Many thanks for your help.

BennyG