Question

如何在sql 中将表中一整列的汉字全部变成拼音首字母 ？

如何在sql 中将表中一整列的汉字全部变成拼音首字母 ？
如将b_client 表中的clientname一列全变成拼音首字母

Answer 1

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)

--如果非汉字字符，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'骜' AS WORD
UNION ALL SELECT 'B',N'簿'
UNION ALL SELECT 'C',N'错'
UNION ALL SELECT 'D',N'鵽'
UNION ALL SELECT 'E',N'樲'
UNION ALL SELECT 'F',N'鳆'
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'沤'
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'箨'
UNION ALL SELECT 'W',N'鹜'
UNION ALL SELECT 'X',N'鑂'
UNION ALL SELECT 'Y',N'韵'
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

调用这个函数就可以