sql 汉字转首字母拼音

从网络上收刮了一些，以备后用

create function fun_getPY(@str nvarchar(4000))
returns nvarchar(4000)
as
begin
declare @word nchar(1),@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'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
--函数调用实例：
--select dbo.fun_getPY('中华人民共和国')
-----------------------------------------------------------------
--可支持大字符集20000个汉字!  
create   function   f_ch2py(@chn   nchar(1))  
  returns   char(1)  
  as  
  begin  
  declare   @n   int  
  declare   @c   char(1)  
  set   @n   =   63  
   
  select   @n   =   @n   +1,  
                @c   =   case   chn   when   @chn   then   char(@n)   else   @c   end  
  from(  
    select   top   27   *   from   (  
            select   chn   =    
  '吖'   union   all   select  
  '八'   union   all   select  
  '嚓'   union   all   select  
  '咑'   union   all   select  
  '妸'   union   all   select  
  '发'   union   all   select  
  '旮'   union   all   select  
  '铪'   union   all   select  
  '丌'   union   all   select     --because   have   no   'i'  
  '丌'   union   all   select  
  '咔'   union   all   select  
  '垃'   union   all   select  
  '嘸'   union   all   select  
  '拏'   union   all   select  
  '噢'   union   all   select  
  '妑'   union   all   select  
  '七'   union   all   select  
  '呥'   union   all   select  
  '仨'   union   all   select  
  '他'   union   all   select  
  '屲'   union   all   select     --no   'u'  
  '屲'   union   all   select     --no   'v'  
  '屲'   union   all   select  
  '夕'   union   all   select  
  '丫'   union   all   select  
  '帀'   union   all   select   @chn)   as   a  
  order   by   chn   COLLATE   Chinese_PRC_CI_AS    
  )   as   b  
  return(@c)  
  end  
  go  
   
  select   dbo.f_ch2py('中')     --Z  
  select   dbo.f_ch2py('国')     --G  
  select   dbo.f_ch2py('人')     --R  
  select   dbo.f_ch2py('镆')     --M  
  go  
  -----------------调用  
  CREATE   FUNCTION   F_GetHelpCode   (  
  @cName   VARCHAR(20)   )  
  RETURNS   VARCHAR(12)  
  AS  
  BEGIN  
        DECLARE   @i   SMALLINT,   @L   SMALLINT   ,   @cHelpCode   VARCHAR(12),   @e   VARCHAR(12),   @iAscii   SMALLINT  
        SELECT   @i=1,   @L=0   ,   @cHelpCode=''  
        while   @L<=12   AND   @i<=LEN(@cName)   BEGIN  
              SELECT   @e=LOWER(SUBSTRING(@cname,@i,1))  
              SELECT   @iAscii=ASCII(@e)  
              IF   @iAscii>=48   AND   @iAscii   <=57   OR   @iAscii>=97   AND   @iAscii   <=122   or   @iAscii=95    
                SELECT   @cHelpCode=@cHelpCode     +@e  
              ELSE  
              IF   @iAscii>=176   AND   @iAscii   <=247  
                          SELECT   @cHelpCode=@cHelpCode     +   dbo.f_ch2py(@e)  
                  ELSE   SELECT   @L=@L-1  
              SELECT   @i=@i+1,   @L=@L+1   END    
          RETURN   @cHelpCode  
  END  
  GO  
   
  --调用  
  select   dbo.F_GetHelpCode('大力') 
------------------------------------------------
/*
     函数名称:GetPY
     实现功能:将一串汉字输入返回每个汉字的拼音首字母 
     如输入-->'经营承包责任制'-->输出-->JYCBZRZ.
     完成时间:2005-09-18
     作者:郝瑞军
     参数:@str-->是你想得到拼音首字母的汉字
     返回值:汉字的拼音首字母
*/ 
create function GetPY(@str varchar(500))
returns varchar(500)
as
begin
   declare @cyc int,@length int,@str1 varchar(100),@charcate varbinary(20)
   set @cyc=1--从第几个字开始取
   set @length=len(@str)--输入汉字的长度
   set @str1=''--用于存放返回值
   while @cyc<=@length
       begin  
          select @charcate=cast(substring(@str,@cyc,1) as varbinary)--每次取出一个字并将其转变成二进制,便于与GBK编码表进行比较
 if @charcate>=0XB0A1 and @charcate<=0XB0C4
         set @str1=@str1+'A'--说明此汉字的首字母为A,以下同上
    else if @charcate>=0XB0C5 and @charcate<=0XB2C0
      set @str1=@str1+'B'
 else if @charcate>=0XB2C1 and @charcate<=0XB4ED
      set @str1=@str1+'C'
 else if @charcate>=0XB4EE and @charcate<=0XB6E9
      set @str1=@str1+'D'
 else if @charcate>=0XB6EA and @charcate<=0XB7A1
                       set @str1=@str1+'E'
 else if @charcate>=0XB7A2 and @charcate<=0XB8C0
             set @str1=@str1+'F'
 else if @charcate>=0XB8C1 and @charcate<=0XB9FD
                       set @str1=@str1+'G'
 else if @charcate>=0XB9FE and @charcate<=0XBBF6
       set @str1=@str1+'H'
 else if @charcate>=0XBBF7 and @charcate<=0XBFA5
       set @str1=@str1+'J'
 else if @charcate>=0XBFA6 and @charcate<=0XC0AB
       set @str1=@str1+'K'
 else if @charcate>=0XC0AC and @charcate<=0XC2E7
       set @str1=@str1+'L'
 else if @charcate>=0XC2E8 and @charcate<=0XC4C2
       set @str1=@str1+'M'
 else if @charcate>=0XC4C3 and @charcate<=0XC5B5
       set @str1=@str1+'N'
   else if @charcate>=0XC5B6 and @charcate<=0XC5BD
       set @str1=@str1+'O'
 else if @charcate>=0XC5BE and @charcate<=0XC6D9
       set @str1=@str1+'P'
 else if @charcate>=0XC6DA and @charcate<=0XC8BA
       set @str1=@str1+'Q'
 else if @charcate>=0XC8BB and @charcate<=0XC8F5
                   set @str1=@str1+'R'
 else if @charcate>=0XC8F6 and @charcate<=0XCBF9
       set @str1=@str1+'S'
 else if @charcate>=0XCBFA and @charcate<=0XCDD9
      set @str1=@str1+'T'
 else if @charcate>=0XCDDA and @charcate<=0XCEF3
        set @str1=@str1+'W'
 else if @charcate>=0XCEF4 and @charcate<=0XD1B8
        set @str1=@str1+'X'
 else if @charcate>=0XD1B9 and @charcate<=0XD4D0
       set @str1=@str1+'Y'
 else if @charcate>=0XD4D1 and @charcate<=0XD7F9
       set @str1=@str1+'Z'
       set @cyc=@cyc+1--取出输入汉字的下一个字
 end
 return @str1--返回输入汉字的首字母
       end
--测试数据
--select dbo.GetPY('从来就是这样酷,我酷,就是酷,看你能把我怎么样,哈哈')
------------------------------------------------------------------