REPLACE Multiple Spaces with One

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REPLACE Multiple Spaces with One

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Jeff Moden

Posted Saturday, November 14, 2009 12:21 PM

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Comments posted to this topic are about the item REPLACE Multiple Spaces with One

--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."

For better, quicker answers on T-SQL questions, click on the following...
http://www.sqlservercentral.com/articles/Best+Practices/61537/

For better answers on performance questions, click on the following...
http://www.sqlservercentral.com/articles/SQLServerCentral/66909/

Post #819042

Adi Cohn-120898

Posted Sunday, November 15, 2009 3:07 AM

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Very nice solution and a great explanation for the solution.

Adi

--------------------------------------------------------------
To know how to ask questions and increase the chances of getting asnwers:
http://www.sqlservercentral.com/articles/Best+Practices/61537/

For better answers on performance questions, click on the following...
http://www.sqlservercentral.com/articles/SQLServerCentral/66909/

Post #819110

Jeff Moden

Posted Sunday, November 15, 2009 10:26 AM

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Thanks Adi... it's an old solution and it's not mine. I've just never seen anyone explain it before and thought an explanation was long overdue especially since it's been coming up a lot on the forums, again. A lot of the "answer" posts have included a substantial amount of RBAR and, of course, that drove me to write the article.

--Jeff Moden

Post #819136

John McC

Posted Monday, November 16, 2009 2:03 AM

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Another (very good) example of something that initially appears to be a horrendous problem having an elegant and relatively simple solution.

Must add to briefcase Smile

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Normal chaos will be resumed as soon as possible. Crazy

Post #819240

ChiragNS

Posted Monday, November 16, 2009 2:19 AM

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Nice one jeff.

"Keep Trying"

Post #819251

C# Gnu

Posted Monday, November 16, 2009 2:43 AM

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Hi
Does this simple replace not work then?

REPLACE(@SomeText, '  ',' ')

which is actually :

REPLACE(@SomeText, '[space][space]','[space]')

i.e. replace two spaces with one..

This seams to work fine for me, but I could well be missing something?

C# Gnu
____________________________________________________

Excel Database Tasks V2 ..
Multi user data edit Task based solution - Excel with SQL Server / Access / MySQL ..

Version 2.5 released - See Blog

Post #819263

Matt Whitfield

Posted Monday, November 16, 2009 2:50 AM

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Jeff

Nice article - I just hope that when I *finally* get round to writing mine then it's anywhere near one tenth as good as yours generally are...

M

Atlantis Interactive - SQL Server Tools
My blog
Why I wrote a sql query analyzer clone

Post #819265

dant12

Posted Monday, November 16, 2009 3:13 AM

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Richard Briggs (11/16/2009)

Hi
Does this simple replace not work then?

REPLACE(@SomeText, '  ',' ')

which is actually :

REPLACE(@SomeText, '[space][space]','[space]')

i.e. replace two spaces with one..

This seams to work fine for me, but I could well be missing something?

sure, it works. if you only have 2 spaces it will work. the problem on the article however is for when u have a random amount of spaces.
with your example you would have to manually add a REPLACE for each extra space

--
Thiago Dantas
@DantHimself

Post #819272

C# Gnu

Posted Monday, November 16, 2009 3:18 AM

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I think you need to try this out ... the above comment (sorry dant12) is not correct:

It looks like the following will replace up to six spaces

REPLACE(@SomeText, '  ',' ')

And the following will sort the rest out :

REPLACE(REPLACE(@SomeText, '  ',' '),'  ',' ')

try this one :

DECLARE @sample VARCHAR(1000)
SET @sample= 'ALKSDKLKJ                                         LSJD ASD  LSD S D    DJD D D D   D  D  D'

SELECT REPLACE(REPLACE(@sample,'  ',' '),'  ',' ')

C# Gnu
____________________________________________________

Excel Database Tasks V2 ..
Multi user data edit Task based solution - Excel with SQL Server / Access / MySQL ..

Version 2.5 released - See Blog

Post #819275

C# Gnu

Posted Monday, November 16, 2009 3:27 AM

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Actually typo in posted code, the second REPLACE is also restricted to 6 spaces, I wonder why?

Cheers

C# Gnu
____________________________________________________

Excel Database Tasks V2 ..
Multi user data edit Task based solution - Excel with SQL Server / Access / MySQL ..

Version 2.5 released - See Blog

Post #819278

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