SQL 字符 数字 转换字母

CREATE FUNCTION Fn_NumberConvertChinase(@number NVARCHAR(50))
RETURNS NVARCHAR(20)
AS
BEGIN
DECLARE @res NVARCHAR(20)
DECLARE @char CHAR(1)
SET @res = ‘‘
SET @char = substring(@number,1,1)
SELECT @res = (CASE @char
    WHEN ‘1‘ THEN ‘一‘
    WHEN ‘2‘ THEN ‘二‘
    WHEN ‘3‘ THEN ‘三‘
    WHEN ‘4‘ THEN ‘四‘
    WHEN ‘5‘ THEN ‘五‘
    WHEN ‘6‘ THEN ‘六‘
    WHEN ‘7‘ THEN ‘七‘
    WHEN ‘8‘ THEN ‘八‘
    WHEN ‘9‘ THEN ‘九‘
    WHEN ‘0‘ THEN ‘零‘
    ELSE substring(@number,1,1) END 
)
IF(len(@number) > 1)
BEGIN
    SET @res =  @res + dbo.fn_numberconvertchinase(substring(@number,2,len(@number)-1))
END
RETURN @res 
END

CREATE FUNCTION Fn_GetPy(@str NVARCHAR(4000))
RETURNS NVARCHAR(4000)
AS
BEGIN
    DECLARE @strlen INT;
    DECLARE @re NVARCHAR(4000);
    --字符中数字转大写
    SELECT @str=dbo.fn_numberconvertchinase(@str);
    
    DECLARE @t table(chr nchar(1) collate Chinese_PRC_CI_AS,letter nchar(1))
    INSERT INTO @t(chr,letter)
      SELECT ‘吖‘,‘A‘ UNION ALL SELECT ‘八‘,‘B‘ UNION ALL
      SELECT ‘嚓‘,‘C‘ UNION ALL SELECT ‘咑‘,‘D‘ UNION ALL
      SELECT ‘妸‘,‘E‘ UNION ALL SELECT ‘发‘,‘F‘ UNION ALL
      SELECT ‘旮‘,‘G‘ UNION ALL SELECT ‘铪‘,‘H‘ UNION ALL
      SELECT ‘丌‘,‘J‘ UNION ALL SELECT ‘咔‘,‘K‘ UNION ALL
      SELECT ‘垃‘,‘L‘ UNION ALL SELECT ‘嘸‘,‘M‘ UNION ALL
      SELECT ‘拏‘,‘N‘ UNION ALL SELECT ‘噢‘,‘O‘ UNION ALL
      SELECT ‘妑‘,‘P‘ UNION ALL SELECT ‘七‘,‘Q‘ UNION ALL
      SELECT ‘呥‘,‘R‘ UNION ALL SELECT ‘仨‘,‘S‘ UNION ALL
      SELECT ‘他‘,‘T‘ UNION ALL SELECT ‘屲‘,‘W‘ UNION ALL
      SELECT ‘夕‘,‘X‘ UNION ALL SELECT ‘丫‘,‘Y‘ UNION ALL
      SELECT ‘帀‘,‘Z‘;
      SELECT @strlen=len(@str),@re=‘‘;
  
      WHILE @strlen>0
      BEGIN
        SELECT TOP 1 @re=letter+@re,@strlen=@strlen-1
          FROM @t a WHERE chr<=substring(@str,@strlen,1)
          ORDER BY chr DESC
        IF @@rowcount=0
          SELECT @re=substring(@str,@strlen,1)+@re,@strlen=@strlen-1
      END
  RETURN(UPPER(@re))
END