替换外来字符替换 'ss' 而不是 SQL 函数中的 'ß'

Question

我自己写了一个快速函数来修复and/or替换外来字符。

出于某种原因，它将 'ss' 视为“ß”并错误地替换了它。到底是怎么回事？我如何确保只有“ß”被替换？

ALTER FUNCTION [dbo].[fn_ReplaceForeignChars](
    @mode int,
    @inStr nvarchar(max) ) 
    RETURNS nvarchar(max) 
AS 
BEGIN
    
    DECLARE @outStr nvarchar(max)

    SET @outStr = @inStr

    SET @outStr = REPLACE(@outStr, 'Ã¼', 'ü')
    SET @outStr = REPLACE(@outStr, 'Ãœ', 'Ü')
    SET @outStr = REPLACE(@outStr, 'Ã¶', 'ö')
    SET @outStr = REPLACE(@outStr, 'ÃŸ', 'ß')
    SET @outStr = REPLACE(@outStr, 'Ã©', 'é')
    SET @outStr = REPLACE(@outStr, 'Ã¸', 'ø')
    SET @outStr = REPLACE(@outStr, 'Ã¨', 'é')
    SET @outStr = REPLACE(@outStr, 'Ã«', 'ë')
    SET @outStr = REPLACE(@outStr, 'Ã´', 'ô')
    SET @outStr = REPLACE(@outStr, 'Ã…', 'Å')
    SET @outStr = REPLACE(@outStr, 'Ã¤', 'ä')
    SET @outStr = REPLACE(@outStr, 'Ã¥', 'å')
    SET @outStr = REPLACE(@outStr, 'Ã³', 'ó')
    SET @outStr = REPLACE(@outStr, 'Ãº', 'ú')
    SET @outStr = REPLACE(@outStr, 'Ã¡', 'á')
    SET @outStr = REPLACE(@outStr, 'Ã‰', 'É')
    SET @outStr = REPLACE(@outStr, 'Ã–', 'Ö')
    SET @outStr = REPLACE(@outStr, 'Ã', 'í')--  (Hidden char next to Ã)
    SET @outStr = REPLACE(@outStr, 'Ã±', 'ñ')
    SET @outStr = REPLACE(@outStr, 'Ã²', 'ò')
    SET @outStr = REPLACE(@outStr, 'Ã„', 'Ä')



    IF (@mode = 1)
    BEGIN
        SET @outStr = REPLACE(@outStr, 'ü', 'u')
        SET @outStr = REPLACE(@outStr, 'ú', 'u')
        SET @outStr = REPLACE(@outStr, 'Ü', 'U')

        SET @outStr = REPLACE(@outStr, 'ö', 'o')
        SET @outStr = REPLACE(@outStr, 'ô', 'o')
        SET @outStr = REPLACE(@outStr, 'ó', 'o')
        SET @outStr = REPLACE(@outStr, 'ò', 'o')
        SET @outStr = REPLACE(@outStr, 'ø', 'o')
        SET @outStr = REPLACE(@outStr, 'Ö', 'O')

        SET @outStr = REPLACE(@outStr, 'ß', 'B')

        SET @outStr = REPLACE(@outStr, 'é', 'e')
        SET @outStr = REPLACE(@outStr, 'é', 'e')
        SET @outStr = REPLACE(@outStr, 'ë', 'e')
        SET @outStr = REPLACE(@outStr, 'É', 'E')

        SET @outStr = REPLACE(@outStr, 'Å', 'A')
        SET @outStr = REPLACE(@outStr, 'Ä', 'A')
        SET @outStr = REPLACE(@outStr, 'ä', 'a')
        SET @outStr = REPLACE(@outStr, 'å', 'a')
        SET @outStr = REPLACE(@outStr, 'á', 'a')
        
        SET @outStr = REPLACE(@outStr, 'í', 'i')
        SET @outStr = REPLACE(@outStr, 'ñ', 'n')
    END

    RETURN @outStr
END

Answer 1

What is going on?

当前排序规则认为 'ss' 和 'ß' 是等价的。

您可以运行在具有二进制排序规则的数据库中，或在表达式中指定排序规则，如下所示：

DECLARE @outStr nvarchar(max) = 'floss' 

SET @outStr = REPLACE(@outStr, 'ß' collate Latin1_General_100_BIN2, 'B') 

select @outStr

替换外来字符替换 'ss' 而不是 SQL 函数中的 'ß'

Replacing Foreign Chars replaces 'ss' instead of 'ß' in SQL Function

sql

sql-server

replace