SQL從中文中獲取拼音首字母

今天做開發，客戶要求，輸入拼音首字母，就能獲取表中所有客戶名稱。

 

步驟：在數據庫上造個函數，然后調用這個函數即可

 

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

--fnpbGetPYFirstLetter()    函數名
--FName        參數

--全部扔進去執行，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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