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SQLで文字列にアクセント付き文字が含まれているかどうかを確認しますか？

入力文字列にアクセント付き文字が含まれている場合はタスクを実行し、それ以外の場合はSQLで別のタスクを実行します。 SQLでこの状態をチェックする方法はありますか？

例えば：

@myString1 = 'àéêöhello!'

IF(@myString1 contains any accented characters)
  Task1
ELSE
  Task2
sqlsql-serverdiacriticsnon-ascii-characters
12
Sooraj K S

SQLフィドル： http://sqlfiddle.com/#!6/9eecb7d/1607

declare @a nvarchar(32) = 'àéêöhello!'
declare @b nvarchar(32) = 'aeeohello!'

select case 
    when (cast(@a as varchar(32)) collate SQL_Latin1_General_Cp1251_CS_AS) = @a 
    then 0 
    else 1 
end HasSpecialChars

select case 
    when (cast(@b as varchar(32)) collate SQL_Latin1_General_Cp1251_CS_AS) = @b 
    then 0 
    else 1 
end HasSpecialChars

（ここでの解決策に基づく： 文字列のアクセントを削除するにはどうすればよいですか？ ）

13
JohnLBevan

私はこの関数を使用して、テキスト（主に外国の姓）をより類似したプレーンラテン語に取得します（いくつかの個別のグッズがあります-自由に独自に実装してください...）。

多分あなたもこれを使うことができます。文字列が返されたものと同じである場合は、比較してください。

CREATE FUNCTION [dbo].[GetRunningNumbers](@anzahl INT=1000000, @StartAt INT=0)
RETURNS TABLE
AS 
RETURN
    SELECT TOP (ISNULL(@anzahl,1000000)) ROW_NUMBER() OVER(ORDER BY A) -1 + ISNULL(@StartAt,0) AS Nmbr
    FROM (VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) AS tblA(A)
        ,(VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) AS tblB(B)
        ,(VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) AS tblC(C)
        ,(VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) AS tblD(D)
        ,(VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) AS tblE(E)
        ,(VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) AS tblF(F);

GO
CREATE FUNCTION [dbo].[GetTextPlainLatin]
(
     @Txt VARCHAR(MAX)
    ,@CaseSensitive BIT
    ,@KeepNumbers BIT
    ,@NonCharReplace VARCHAR(100),@MinusReplace VARCHAR(100) 
    ,@PercentReplace VARCHAR(100),@UnderscoreReplace VARCHAR(100) --for SQL-Masks
    ,@AsteriskReplace VARCHAR(100),@QuestionmarkReplace VARCHAR(100) --for SQL-Masks (Access-Style)
)
RETURNS VARCHAR(MAX)
AS
BEGIN

DECLARE @txtTransformed VARCHAR(MAX)=(SELECT LTRIM(RTRIM(CASE WHEN ISNULL(@CaseSensitive,0)=0 THEN LOWER(@Txt) ELSE @Txt END)));
RETURN
(
    SELECT Repl.ASCII_Code
    FROM dbo.GetRunningNumbers(LEN(@txtTransformed),1) AS pos
    --ASCII-Codes of all characters in your text
    CROSS APPLY(SELECT ASCII(SUBSTRING(@txtTransformed,pos.Nmbr,1)) AS ASCII_Code) AS OneChar  
    --re-code 
    CROSS APPLY
    (
        SELECT CASE 
            WHEN OneChar.ASCII_Code BETWEEN ASCII('A') AND ASCII('Z') THEN  CHAR(OneChar.ASCII_Code)
            WHEN OneChar.ASCII_Code BETWEEN ASCII('a') AND ASCII('z') THEN  CHAR(OneChar.ASCII_Code)
            WHEN OneChar.ASCII_Code BETWEEN ASCII('0') AND ASCII('9') AND @KeepNumbers=1 THEN CHAR(OneChar.ASCII_Code)
            WHEN OneChar.ASCII_Code = ASCII('ƒ') THEN 'f'
            WHEN OneChar.ASCII_Code = ASCII('Š') THEN 'S'
            WHEN OneChar.ASCII_Code = ASCII('š') THEN 's'
            WHEN OneChar.ASCII_Code = ASCII('ß') THEN 'ss'
            WHEN OneChar.ASCII_Code = ASCII('Ä') THEN 'Ae'
            WHEN OneChar.ASCII_Code = ASCII('ä') THEN 'ae'
            WHEN OneChar.ASCII_Code = ASCII('Æ') THEN 'Ae'
            WHEN OneChar.ASCII_Code = ASCII('æ') THEN 'ae'
            WHEN OneChar.ASCII_Code = ASCII('Ö') THEN 'Oe'
            WHEN OneChar.ASCII_Code = ASCII('ö') THEN 'oe'
            WHEN OneChar.ASCII_Code = ASCII('Œ') THEN 'Oe'
            WHEN OneChar.ASCII_Code = ASCII('œ') THEN 'oe'
            WHEN OneChar.ASCII_Code = ASCII('Ü') THEN 'Ue'
            WHEN OneChar.ASCII_Code = ASCII('ü') THEN 'ue'
            WHEN OneChar.ASCII_Code = ASCII('Ž') THEN 'Z'
            WHEN OneChar.ASCII_Code = ASCII('ž') THEN 'z'
            WHEN OneChar.ASCII_Code = ASCII('×') THEN 'x'
            WHEN OneChar.ASCII_Code BETWEEN ASCII('À') AND ASCII('Å') THEN  'A'
            WHEN OneChar.ASCII_Code BETWEEN ASCII('à') AND ASCII('å') THEN  'a'
            WHEN OneChar.ASCII_Code = ASCII('Ç') THEN 'C'
            WHEN OneChar.ASCII_Code = ASCII('ç') THEN 'c'
            WHEN OneChar.ASCII_Code BETWEEN ASCII('È') AND ASCII('Ë') THEN  'E'
            WHEN OneChar.ASCII_Code BETWEEN ASCII('è') AND ASCII('ë') THEN  'e'
            WHEN OneChar.ASCII_Code BETWEEN ASCII('Ì') AND ASCII('Ï') THEN  'I'
            WHEN OneChar.ASCII_Code BETWEEN ASCII('ì') AND ASCII('ï') THEN  'i'
            WHEN OneChar.ASCII_Code = ASCII('Ð') THEN 'D' --island Eth
            WHEN OneChar.ASCII_Code = ASCII('ð') THEN 'd' --island eth
            WHEN OneChar.ASCII_Code = ASCII('Ñ') THEN 'N'
            WHEN OneChar.ASCII_Code = ASCII('ñ') THEN 'n'
            WHEN OneChar.ASCII_Code BETWEEN ASCII('Ò') AND ASCII('Ö') THEN 'O'
            WHEN OneChar.ASCII_Code BETWEEN ASCII('ò') AND ASCII('ö') THEN 'o'
            WHEN OneChar.ASCII_Code = ASCII('Ø') THEN 'O'
            WHEN OneChar.ASCII_Code = ASCII('ø') THEN 'o'
            WHEN OneChar.ASCII_Code BETWEEN ASCII('Ù') AND ASCII('Ü') THEN  'U'
            WHEN OneChar.ASCII_Code BETWEEN ASCII('ù') AND ASCII('ü') THEN  'u'
            WHEN OneChar.ASCII_Code = ASCII('Ý') THEN 'Y'
            WHEN OneChar.ASCII_Code = ASCII('ý') THEN 'y'
            WHEN OneChar.ASCII_Code = ASCII('Þ') THEN 'Th' --island Thorn
            WHEN OneChar.ASCII_Code = ASCII('þ') THEN 'th' --island thorn
            WHEN OneChar.ASCII_Code = ASCII('Ÿ') THEN 'Y'
            WHEN OneChar.ASCII_Code = ASCII('ÿ') THEN 'y'
            --Special with "minus"
            WHEN OneChar.ASCII_Code = ASCII('-') THEN ISNULL(@MinusReplace,ISNULL(@NonCharReplace,CHAR(OneChar.ASCII_Code)))
            --Special with mask characters
            WHEN OneChar.ASCII_Code = ASCII('%') THEN ISNULL(@PercentReplace,ISNULL(@NonCharReplace,CHAR(OneChar.ASCII_Code)))
            WHEN OneChar.ASCII_Code = ASCII('_') THEN ISNULL(@UnderscoreReplace,ISNULL(@NonCharReplace,CHAR(OneChar.ASCII_Code)))
            WHEN OneChar.ASCII_Code = ASCII('*') THEN ISNULL(@AsteriskReplace,ISNULL(@NonCharReplace,CHAR(OneChar.ASCII_Code)))
            WHEN OneChar.ASCII_Code = ASCII('?') THEN ISNULL(@QuestionmarkReplace,ISNULL(@NonCharReplace,CHAR(OneChar.ASCII_Code)))
            --replace others        
            ELSE ISNULL(@NonCharReplace,CHAR(OneChar.ASCII_Code))
        END AS ASCII_Code
    ) AS Repl    
    FOR XML PATH(''),TYPE
).value('.','varchar(max)');
END
GO

SELECT dbo.GetTextPlainLatin('Case sensitive ÄÖ àéêöhello!',1,1,NULL,NULL,NULL,NULL,NULL,NULL);
SELECT dbo.GetTextPlainLatin('Case in-sensitive ÄÖ àéêöhello!',0,1,NULL,NULL,NULL,NULL,NULL,NULL);
GO
DROP FUNCTION dbo.GetTextPlainLatin
GO
DROP FUNCTION dbo.GetRunningNumbers;
3
Shnugo

粗雑な方法は、各文字のASCII(<each character>) >= 128をチェックすることです。このようなもの

DECLARE @MyString NVARCHAR(100)
SET @MyString = N'àéêöhello!'

;WITH N as 
(
SELECT 1 r UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 
), Numbers
as
(
SELECT RN = ROW_NUMBER()OVER(ORDER BY N1.r) FROM N as N1 CROSS JOIN N as N2
)
SELECT MAX(CASE WHEN ASCII(SUBSTRING(@MyString,RN,1)) >= 128 THEN 1 ELSE 0 END) ContainsAccentedChars FROM Numbers
WHERE RN <= LEN(@MyString)
1
ughai