Replace whole word using ms sql server “replace”

Question

declare @str varchar(50)=\'GoodLuck Markand\'
declare @replacedString varchar(50)
set @replacedString = replace(@str,\'Good\',\'Better\')
print @replacedString


        

Answer 1

Append empty space at start and end of the string then replace ' Good ' with ' Better '. Finally use Ltrim and Rtrim to remove the empty space at start and end of the string

DECLARE @str VARCHAR(50)='Good Luck Good MarkandGood Good'
DECLARE @replacedString VARCHAR(50)

SELECT rtrim(ltrim(Replace(replace(' '+@str+' ',' Good ',' Better '),
' Good ',' Better ')))

Answer 2

Try This: (Works as Expected)

declare @str varchar(500)
set @str = 'Good Good Good Good Good Good Good Good Luck Good GoodLuck MarkAndGood GoodMarkAnd MarkAndGood Good'
declare @replacedString varchar(500)
SET @replacedString = replace(@str,' Good ',' Better ')

SET @replacedString = replace(@replacedString,' Good ',' Better ')

SET @replacedString = CASE WHEN CHARINDEX('Good ', @replacedString) = 1 THEN 
                        STUFF(@replacedString, 1, Len('Good'), 'Better')
                      ELSE @replacedString END

SELECT CASE WHEN CHARINDEX(REVERSE(' Good'), REVERSE(@replacedString)) = 1 THEN 
                             Reverse(STUFF(Reverse(@replacedString), CHARINDEX(Reverse(' Good'), 
                             Reverse(@replacedString)), Len(' Good'), Reverse(' Better')))
                      ELSE @replacedString END AS A

Input:

Good Good Luck Good GoodLuck Good

Result:

Better Better Luck Better GoodLuck Better

Answer 3

This does not seems to be functionality of Replace, as per MSDN; You have to use give spaces at both side of the word being searched and replaced.

replace(@str,' Good ',' Better ')

Replaces all occurrences of a specified string value with another string value.

Refer MSDN

Syntax

REPLACE ( string_expression , string_pattern , string_replacement )

Arguments

string_expression Is the string expression to be searched. string_expression can be of a character or binary data type.

string_pattern Is the substring to be found. string_pattern can be of a character or binary data type. string_pattern cannot be an empty string (''), and must not exceed the maximum number of bytes that fits on a page.

string_replacement Is the replacement string. string_replacement can be of a character or binary data type.