SQL从中文中获取拼音首字母

今天做开发，客户要求，输入拼音首字母，就能获取表中所有客户名称。

步骤：在数据库上造个函数，然后调用这个函数即可

select dbo.fnpbGetPYFirstLetter(FName) as chinaname,FName from t_Organization

--fnpbGetPYFirstLetter()    函数名
--FName        参数

--全部扔进去执行，不用修改
Create FUNCTION dbo.fnpbGetPYFirstLetter   
(   
@str NVARCHAR(4000)   
)   
/*  
select dbo. fnpbGetPYFirstLetter ('中國香港')  
*/  
RETURNS NVARCHAR(4000)   
--WITH ENCRYPTION   
AS   
BEGIN   
DECLARE @WORD NCHAR(1),@PY NVARCHAR(4000)   
  
SET @PY=''   
  
WHILE LEN(@STR)>0   
BEGIN   
SET @WORD=LEFT(@STR,1)   
  
--如果非漢字字符﹐返回原字符   
SET @PY=@PY+(CASE WHEN UNICODE(@WORD) BETWEEN 19968 AND 19968+20901   
THEN (   
SELECT TOP 1 PY   
FROM   
(   
SELECT 'A' AS PY,N'驁' AS WORD   
UNION ALL SELECT 'B',N'簿'   
UNION ALL SELECT 'C',N'錯'   
UNION ALL SELECT 'D',N'鵽'   
UNION ALL SELECT 'E',N'樲'   
UNION ALL SELECT 'F',N'鰒'   
UNION ALL SELECT 'G',N'腂'   
UNION ALL SELECT 'H',N'夻'   
UNION ALL SELECT 'J',N'攈'   
UNION ALL SELECT 'K',N'穒'   
UNION ALL SELECT 'L',N'鱳'   
UNION ALL SELECT 'M',N'旀'   
UNION ALL SELECT 'N',N'桛'   
UNION ALL SELECT 'O',N'漚'   
UNION ALL SELECT 'P',N'曝'   
UNION ALL SELECT 'Q',N'囕'   
UNION ALL SELECT 'R',N'鶸'   
UNION ALL SELECT 'S',N'蜶'   
UNION ALL SELECT 'T',N'籜'   
UNION ALL SELECT 'W',N'鶩'   
UNION ALL SELECT 'X',N'鑂'   
UNION ALL SELECT 'Y',N'韻'   
UNION ALL SELECT 'Z',N'做'   
) T   
WHERE WORD>=@WORD COLLATE CHINESE_PRC_CS_AS_KS_WS   
ORDER BY PY ASC   
)   
ELSE @WORD   
END)   
SET @STR=RIGHT(@STR,LEN(@STR)-1)   
END   
  
RETURN @PY   
  
END  
  
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