TSQL如何在字符串中查找父项？

我有一个字符串：

'This is some random text so you don't get upset [rethink]'

还是这根绳子

'This is some random text so you don't get upset [me] and [123]'

'This is some random text so you don't get upset  and '

是否可以使用TSQL查找并替换[text]字符串

结果是：

'This is some random text so you don't get upset '

还是这根绳子

'This is some random text so you don't get upset [me] and [123]'

'This is some random text so you don't get upset  and '

编辑：

我已修改了已接受的答案，以便使函数更具动态性：

CREATE FUNCTION [dbo].[StripTagWithChar]
(@TagLeft NVARCHAR(1),@TagText NVARCHAR(MAX),@TagRight NVARCHAR(1))
RETURNS NVARCHAR(MAX)
AS
BEGIN
    DECLARE @Start INT
    DECLARE @End INT
    DECLARE @Length INT
    SET @Start = CHARINDEX(@TagLeft,@TagText)
    SET @End = CHARINDEX(@TagRight,@TagText,@Start+1)
    SET @Length = (@End - @Start) + 1

    WHILE (@Start > 0
        AND @End > 0
        AND @Length > 0)
    BEGIN
        SET @TagText = STUFF(@TagText,@Start,@Length,'')
        SET @Start = CHARINDEX(@TagLeft,@TagText)
        SET @End = CHARINDEX(@TagRight,@TagText,@Start+1)
        SET @Length = (@End - @Start) + 1
    END

    RETURN Replace(LTRIM(RTRIM(@TagText)),'  ',' ')
END

现在，此函数接受括号作为输入：

select [dbo].[StripTagWithChar]( '{' , 'this is {not} awesome' , '}' )

最酷的是，现在它将过滤带有相同括号的标签，如下所示：

select [dbo].[StripTagWithChar]( '=' , 'this is =not= awesome' , '=' )

---

我建议对……做一些轻微的修改。。。只需将

替换为

[

和

]

：

CREATE FUNCTION [dbo].[udf_StripTag]
(@TagText VARCHAR(MAX))
RETURNS VARCHAR(MAX)
AS
BEGIN
    DECLARE @Start INT
    DECLARE @End INT
    DECLARE @Length INT
    SET @Start = CHARINDEX('[',@TagText)
    SET @End = CHARINDEX(']',@TagText,CHARINDEX('[',@TagText))
    SET @Length = (@End - @Start) + 1

    WHILE (@Start > 0
        AND @End > 0
        AND @Length > 0)
    BEGIN
        SET @TagText = STUFF(@TagText,@Start,@Length,'')
        SET @Start = CHARINDEX('[',@TagText)
        SET @End = CHARINDEX(']',@TagText,CHARINDEX('[',@TagText))
        SET @Length = (@End - @Start) + 1
    END

    RETURN LTRIM(RTRIM(@TagText))
END
GO

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我刚刚注意到这个函数使用VARCHAR而不是NVARCHAR。这太糟糕了，你不应该使用VARCHAR。