使用 ms sql server“替换”替换整个单词

Question

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“Good”这样的单词。但输出是“BetterLuck Markand”。

我想要 MS SQL Replace 函数来比较确切的单词，然后替换它。我怎样才能这样做？

Answer 1

试试这个：（按预期工作）

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：

好运好运好运好运好运

结果：

更好 更好 好运 更好 好运 更好