使用 ms sql server“替换"替换整个单词 [英] Replace whole word using ms sql server "replace"

问题描述

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

我希望输出保持不变，因为没有像好"这样的单词.但输出是BetterLuck Markand".

I want the output to be unchanged, because there is no single word like 'Good'. But the output is 'BetterLuck Markand'.

我希望 MS SQL 替换功能比较确切的单词，然后替换它.我该怎么做?

I want the MS SQL Replace function to Compare the exact word and then replace it. How can i do so?

推荐答案

试试这个:(按预期工作)

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

输入:

祝你好运好运好运

结果:

好运好运好运好运好

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