SQL中定義函數，將漢字轉成拼音簡寫

我們在寫程序中，經常會用到SQL中將某個名字轉成拼音，然后保存在數據庫中某個字段中，方便快捷查詢，所以有必要寫SQL函數來定義一下，話補多說，直接上代碼：

  Create  function  fn_GetPy(@str  nvarchar(4000))  
  returns  nvarchar(4000)  
　--用於加密
  --WITH  ENCRYPTION  
  as  
  begin  
  declare  @intLen int  
  declare  @strRet nvarchar(4000)  
  declare  @temp  nvarchar(100)  
  set  @intLen  =  len(@str)  
  set  @strRet  =  ''  
  while  @intLen  >  0  
  begin  
  set  @temp  =  ''  
  select  @temp  =  case    
  when  substring(@str,@intLen,1)  >=  '帀'  then  'Z'  
  when  substring(@str,@intLen,1)  >=  '丫'  then  'Y'  
  when  substring(@str,@intLen,1)  >=  '夕'  then  'X'  
  when  substring(@str,@intLen,1)  >=  '屲'  then  'W'  
  when  substring(@str,@intLen,1)  >=  '他'  then  'T'  
  when  substring(@str,@intLen,1)  >=  '仨'  then  'S'  
  when  substring(@str,@intLen,1)  >=  '呥'  then  'R'  
  when  substring(@str,@intLen,1)  >=  '七'  then  'Q'  
  when  substring(@str,@intLen,1)  >=  '妑'  then  'P'  
  when  substring(@str,@intLen,1)  >=  '噢'  then  'O'  
  when  substring(@str,@intLen,1)  >=  '拏'  then  'N'  
  when  substring(@str,@intLen,1)  >=  '嘸'  then  'M'  
  when  substring(@str,@intLen,1)  >=  '垃'  then  'L'  
  when  substring(@str,@intLen,1)  >=  '咔'  then  'K'  
  when  substring(@str,@intLen,1)  >=  '丌'  then    'J'  
  when  substring(@str,@intLen,1)  >=  '鉿'  then  'H'  
  when  substring(@str,@intLen,1)  >=  '旮'  then  'G'  
  when  substring(@str,@intLen,1)  >=  '發'  then  'F'  
  when  substring(@str,@intLen,1)  >=  '妸'  then  'E'  
  when  substring(@str,@intLen,1)  >=  '咑'  then  'D'  
  when  substring(@str,@intLen,1)  >=  '嚓'  then  'C'  
  when  substring(@str,@intLen,1)  >=  '八'  then  'B'  
  when  substring(@str,@intLen,1)  >=  '吖'  then  'A'  
  else  rtrim(ltrim(substring(@str,@intLen,1)))  
  end  
  --對於漢字特殊字符，不生成拼音碼  
  if  (ascii(@temp)>127)  set  @temp  =  ''  
  --對於英文中小括號，不生成拼音碼  
  if  @temp  =  '('  or  @temp  =  ')'  set  @temp  =  ''  
  select  @strRet  =  @temp  +  @strRet  
  set  @intLen  =  @intLen  -  1  
  end  
  return  lower(@strRet)  
  end 

調用方式：

select dbo.fn_GetPy('張三豐') py

結果如下：

py

zsf