Sql Server使用函數獲取拼音碼

CREATE FUNCTION Fun_GetPY
(
@Str NVARCHAR(4000)
)
RETURNS NVARCHAR(4000)
AS
BEGIN
DECLARE @Word NCHAR(1)
DECLARE @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'咗') 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

-- 使用
update dbo.Dict_Medicine set PyCode = [dbo].[Fun_GetPY](MedicineName)  where ID = 1 ;

• 這個的缺點就是不能夠識別多音字。只能做簡單的識別，其實還是不太建議使用此方法
• 使用函數而不使用存儲過程的原因是函數可以在 Select 語句鍾執行。而存儲過程不行。存儲過程可以返回多個參數，函數只能返回一個。