Remove all spaces from a string in SQL Server

Question

What is the best way to remove all spaces from a string in SQL Server 2008?

LTRIM(RTRIM(\' a b \')) would remove all spaces at the right and left of th

Answer 1

100% working

UPDATE table_name SET  "column_name"=replace("column_name", ' ', ''); //Remove white space

UPDATE table_name SET  "column_name"=replace("column_name", '\n', ''); //Remove newline

UPDATE table_name SET  "column_name"=replace("column_name", '\t', ''); //Remove all tab

You can use "column_name" or column_name

Thanks

Subroto

Answer 2

If there are multiple white spaces in a string, then replace may not work correctly. For that, the following function should be used.

CREATE FUNCTION RemoveAllSpaces
(
    @InputStr varchar(8000)
)
RETURNS varchar(8000)
AS
BEGIN
declare @ResultStr varchar(8000)
set @ResultStr = @InputStr
while charindex(' ', @ResultStr) > 0
    set @ResultStr = replace(@InputStr, ' ', '')

return @ResultStr
END

Example:

select dbo.RemoveAllSpaces('aa  aaa       aa aa                 a')

Output:

aaaaaaaaaa

Answer 3

Syntax for replacing a specific characters:

REPLACE ( string_expression , string_pattern , string_replacement )  

For example in the string "HelloReplaceThingsGoing" Replace word is replaced by How

SELECT REPLACE('HelloReplaceThingsGoing','Replace','How');
GO

Answer 4

If it is an update on a table all you have to do is run this update multiple times until it is affecting 0 rows.

update tableName
set colName = REPLACE(LTRIM(RTRIM(colName)), '  ', ' ')
where colName like '%  %'

Answer 5

if you want to remove spaces,-, and another text from string then use following :

suppose you have a mobile number in your Table like '718-378-4957' or ' 7183784957' and you want replace and get the mobile number then use following Text.

select replace(replace(replace(replace(MobileNo,'-',''),'(',''),')',''),' ','') from EmployeeContactNumber

Result :-- 7183784957

Answer 6

This does the trick of removing the spaces on the strings:

UPDATE
    tablename
SET
    columnname = replace(columnname, ' ', '');