用SQL Server将西里尔语翻译成拉丁语

时间：2018-01-04 15:56:59

标签： sql sql-server

如何在T-SQL函数中将西里尔语转换为拉丁语？

更新。由于我没有在网上找到任何可用的内容，我已经提出了问题，我已将问题的答案附在我的问题上，以分享我所做的代码。我在询问问题时标记了知识共享的标记。

3 个答案:

答案 0 :(得分：3)

使用Prezemyslaw Remin的初步答案作为替换的参考点，这是一个更好的TVF版本：

CREATE FUNCTION dbo.Cyrillic2Latin_tv (@String nvarchar(MAX))
RETURNS TABLE
AS RETURN(
    SELECT REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(@string,N'ый',N'y'),N'ЫЙ',N'Y'),N'а',N'a'),N'б',N'b'),N'в',N'v'),N'г',N'g'),N'д',N'd'),N'е',N'e'),N'ё',N'yo'),N'ж',N'zh'),N'з',N'z'),N'и',N'i'),N'й',N'y'),N'к',N'k'),N'л',N'l'),N'м',N'm'),N'н',N'n'),N'о',N'o'),N'п',N'p'),N'р',N'r'),N'с',N's'),N'т',N't'),N'у',N'u'),N'ф',N'f'),N'х',N'kh'),N'ц',N'c'),N'ч',N'ch'),N'ш',N'sh'),N'щ',N'shch'),N'ъ',N''),N'ы',N'y'),N'ь',N''),N'э',N'e'),N'ю',N'yu'),N'я',N'ya'),N'А',N'A'),N'Б',N'B'),N'В',N'V'),N'Г',N'G'),N'Д',N'D'),N'Е',N'E'),N'Ё',N'YO'),N'Ж',N'ZH'),N'З',N'Z'),N'И',N'I'),N'Й',N'Y'),N'К',N'K'),N'Л',N'L'),N'М',N'M'),N'Н',N'N'),N'О',N'O'),N'П',N'P'),N'Р',N'R'),N'С',N'S'),N'Т',N'T'),N'У',N'U'),N'Ф',N'F'),N'Х',N'KH'),N'Ц',N'C'),N'Ч',N'CH'),N'Ш',N'SH'),N'Щ',N'SHCH'),N'Ъ',N''),N'Ы',N'Y'),N'Ь',N''),N'Э',N'E'),N'Ю',N'YU'),N'Я',N'YA') AS NonCyrillic
);

（是的，我意识到这很难看）

至于比较，我们对生产服务器进行了“快速”测试（_s后缀函数是缩放器，_tv是表值函数。 SQL：

SET STATISTICS IO ON;
SET STATISTICS TIME ON;

PRINT 'Using Scalar';
SELECT dbo.Cyrillic2Latin_s(BCM.[Name]) AS ReplacedName
FROM OpenGI..ic_yyclient BCM
WHERE BCM.[Name] IS NOT NULL;

PRINT 'Using TVF';
SELECT C2L.NonCyrillic AS ReplacedName
FROM OpenGI..ic_yyclient BCM
     CROSS APPLY dbo.Cyrillic2Latin_tv(BCM.[Name]) C2L
WHERE BCM.[Name] IS NOT NULL;


SET STATISTICS IO OFF;
SET STATISTICS TIME OFF;

统计：

Using Scalar

 SQL Server Execution Times:
   CPU time = 0 ms,  elapsed time = 0 ms.

(147548 rows affected)
Table 'icp_yyclient'. Scan count 1, logical reads 1449, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.

 SQL Server Execution Times:
   CPU time = 78672 ms,  elapsed time = 84518 ms.
Using TVF

 SQL Server Execution Times:
   CPU time = 0 ms,  elapsed time = 0 ms.

(147548 rows affected)
Table 'icp_yyclient'. Scan count 1, logical reads 1449, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.

 SQL Server Execution Times:
   CPU time = 36140 ms,  elapsed time = 36696 ms.

 SQL Server Execution Times:
   CPU time = 0 ms,  elapsed time = 0 ms.

如您所见，尽管扫描和逻辑读取相同，但使用TVF的147,548行的处理时间显着降低（超过48秒）。因此，TVF是解决这个问题的最佳方法。

答案 1 :(得分：0)

这是一个使用REPLACE函数将西里尔语翻译成拉丁语的解决方案。 

create function dbo.Cyrillic2Latin (@string nvarchar(max)) 
returns nvarchar(max) as
begin

set @string = replace (@string, N'ый'       ,N'y')
set @string = replace (@string, N'ЫЙ'       ,N'Y')
set @string = replace (@string, N'а'        ,N'a')
set @string = replace (@string, N'б'        ,N'b')
set @string = replace (@string, N'в'        ,N'v')
set @string = replace (@string, N'г'        ,N'g')
set @string = replace (@string, N'д'        ,N'd')
set @string = replace (@string, N'е'        ,N'e')
set @string = replace (@string, N'ё'        ,N'yo')
set @string = replace (@string, N'ж'        ,N'zh')
set @string = replace (@string, N'з'        ,N'z')
set @string = replace (@string, N'и'        ,N'i')
set @string = replace (@string, N'й'        ,N'y')
set @string = replace (@string, N'к'        ,N'k')
set @string = replace (@string, N'л'        ,N'l')
set @string = replace (@string, N'м'        ,N'm')
set @string = replace (@string, N'н'        ,N'n')
set @string = replace (@string, N'о'        ,N'o')
set @string = replace (@string, N'п'        ,N'p')
set @string = replace (@string, N'р'        ,N'r')
set @string = replace (@string, N'с'        ,N's')
set @string = replace (@string, N'т'        ,N't')
set @string = replace (@string, N'у'        ,N'u')
set @string = replace (@string, N'ф'        ,N'f')
set @string = replace (@string, N'х'        ,N'kh')
set @string = replace (@string, N'ц'        ,N'c')
set @string = replace (@string, N'ч'        ,N'ch')
set @string = replace (@string, N'ш'        ,N'sh')
set @string = replace (@string, N'щ'        ,N'shch')
set @string = replace (@string, N'ъ'        ,N' ')
set @string = replace (@string, N'ы'        ,N'y')
set @string = replace (@string, N'ь'        ,N'')
set @string = replace (@string, N'э'        ,N'e')
set @string = replace (@string, N'ю'        ,N'yu')
set @string = replace (@string, N'я'        ,N'ya')
set @string = replace (@string, N'А'        ,N'A')
set @string = replace (@string, N'Б'        ,N'B')
set @string = replace (@string, N'В'        ,N'V')
set @string = replace (@string, N'Г'        ,N'G')
set @string = replace (@string, N'Д'        ,N'D')
set @string = replace (@string, N'Е'        ,N'E')
set @string = replace (@string, N'Ё'        ,N'YO')
set @string = replace (@string, N'Ж'        ,N'ZH')
set @string = replace (@string, N'З'        ,N'Z')
set @string = replace (@string, N'И'        ,N'I')
set @string = replace (@string, N'Й'        ,N'Y')
set @string = replace (@string, N'К'        ,N'K')
set @string = replace (@string, N'Л'        ,N'L')
set @string = replace (@string, N'М'        ,N'M')
set @string = replace (@string, N'Н'        ,N'N')
set @string = replace (@string, N'О'        ,N'O')
set @string = replace (@string, N'П'        ,N'P')
set @string = replace (@string, N'Р'        ,N'R')
set @string = replace (@string, N'С'        ,N'S')
set @string = replace (@string, N'Т'        ,N'T')
set @string = replace (@string, N'У'        ,N'U')
set @string = replace (@string, N'Ф'        ,N'F')
set @string = replace (@string, N'Х'        ,N'KH')
set @string = replace (@string, N'Ц'        ,N'C')
set @string = replace (@string, N'Ч'        ,N'CH')
set @string = replace (@string, N'Ш'        ,N'SH')
set @string = replace (@string, N'Щ'        ,N'SHCH')
set @string = replace (@string, N'Ъ'        ,N'')
set @string = replace (@string, N'Ы'        ,N'Y')
set @string = replace (@string, N'Ь'        ,N'')
set @string = replace (@string, N'Э'        ,N'E')
set @string = replace (@string, N'Ю'        ,N'YU')
set @string = replace (@string, N'Я'        ,N'YA')

return @String
end

答案 2 :(得分：0)

    /* PREPARE TABLES WITH BOTH LETTERS CYRILIC AND LATIN */

CREATE TABLE dbo.Cyrilic
(
sn INT,
Letter NVARCHAR(2)
)
GO

INSERT INTO Cyrilic
(sn, Letter)
VALUES
(1,N'а'),
(2,N'б'),
(3,N'в'),
(4,N'г'),
(5,N'д'),
(6,N'ђ'),
(7,N'е'),
(8,N'ж'),
(9,N'з'),
(10,N'и'),
(11,N'ј'),
(12,N'к'),
(13,N'л'),
(14,N'љ'),
(15,N'м'),
(16,N'н'),
(17,N'њ'),
(18,N'о'),
(19,N'п'),
(20,N'р'),
(21,N'с'),
(22,N'т'),
(23,N'ћ'),
(24,N'у'),
(25,N'ф'),
(26,N'х'),
(27,N'ц'),
(28,N'ч'),
(29,N'џ'),
(30,N'ш')

CREATE TABLE dbo.Latin
(
sn INT,
Letter NVARCHAR(2)
)
GO

INSERT INTO Latin
(sn, Letter)
VALUES
(1,N'a'),
(2,N'b'),
(3,N'v'),
(4,N'g'),
(5,N'd'),
(6,N'dj'),
(7,N'е'),
(8,N'ž'),
(9,N'z'),
(10,N'i'),
(11,N'j'),
(12,N'k'),
(13,N'l'),
(14,N'lj'),
(15,N'm'),
(16,N'n'),
(17,N'nj'),
(18,N'o'),
(19,N'p'),
(20,N'r'),
(21,N's'),
(22,N't'),
(23,N'ć'),
(24,N'u'),
(25,N'f'),
(26,N'h'),
(27,N'c'),
(28,N'č'),
(29,N'dž'),
(30,N'š')
GO

/* CREATE FUNCTION TO CONVERT STRING WITH PARAMETER TO PASS */

CREATE FUNCTION ConvertToLatin (@string NVARCHAR(MAX))  
RETURNS NVARCHAR(MAX) AS  
BEGIN  
    DECLARE @i int  
    DECLARE @character NVARCHAR(1)
    DECLARE @characterForCheck NVARCHAR(1)
    DECLARE @dest NVARCHAR(1000)  
    DECLARE @characterExists BIT
    SET @dest = ''

    SET @i = 1;  
    DECLARE @src NVARCHAR(MAX) = (SELECT N''+@string)
    WHILE (@i <= LEN(@src))  
    BEGIN  
    SET @character = SUBSTRING(@src, @i, 1)  
    SET @characterForCheck = LOWER(@character)
    DECLARE @isLowoer BIT 
    SET @isLowoer = (SELECT CASE WHEN N'' + UNICODE(@character) LIKE N'' + UNICODE(LOWER(@character))  THEN 1 ELSE 0 END)

    SET @characterExists = (SELECT COUNT(*) FROM Cyrilic c WHERE c.Letter LIKE N''+@characterForCheck)
    SET @dest = (SELECT TOP 1 @dest +
                CASE WHEN @characterExists = 0 
                     THEN N''+@character 
                     ELSE 
                        CASE 
                            WHEN @isLowoer = 1 
                            THEN l.Letter 
                            --if there is two letters in one (lj,nj,dz, then just first is upper
                            ELSE UPPER(LEFT(l.Letter,1))+LOWER(SUBSTRING(l.Letter,2,LEN(l.Letter)))
                    END
                END 
    FROM Cyrilic c
    INNER JOIN Latin l ON l.sn = c.sn
    WHERE c.Letter LIKE N''+@characterForCheck OR @characterExists = 0)

    SET @i = @i + 1  
END
    RETURN @dest  
END  

/* CALL FUNCTION AND PASS SOME PARAMETER (IT COULD BE SELECT LIKE IN EXAMPLE */
SELECT dbo.ConvertToLatin((SELECT N'Тест'))
相关问题
最新问题