一、該函數傳入字符串，返回數據為：如果為漢字字符，返回該字符的首字母，如果為非漢字字符，則返回本身。
二、用到的知識點：漢字對應的UNICODE值，漢字的排序規則。
三、數據庫函數：

CREATE FUNCTION GetInitialLetter(@ChineseString NVARCHAR(4000)) RETURNS NVARCHAR(4000) AS BEGINDECLARE @SingleCharacter NCHAR(1), @ReturnString NVARCHAR(4000) SET @ReturnString = '' WHILE LEN(@ChineseString)>0 BEGIN--依次取單個字符 SET @SingleCharacter = LEFT(@ChineseString,1) ----漢字字符，返回字符對應首字母,非漢字字符,返回原字符 IF(UNICODE(@SingleCharacter) BETWEEN 19968 AND 19968+20901) SET @ReturnString = @ReturnString + (SELECT TOP 1 PY FROM (SELECT 'A' AS PY,N'驁' AS ChineseCharacters 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' )SpellingTable where ChineseCharacters > = @SingleCharacter COLLATE Chinese_PRC_CS_AS_KS_WS ORDER by PY ASC) ELSE SET @ReturnString = @ReturnString + @SingleCharacterSET @ChineseString = RIGHT(@ChineseString,LEN(@ChineseString)-1) ENDRETURN @ReturnString END GO

SELECT dbo.GetInitialLetter('加油2018')

返回：JY2018

?

總結

以上是生活随笔為你收集整理的SqlServer 获取汉字的拼音首字母的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。