Automatically generate pinyin codes for table data in SQL server

Summarize the implementation steps of automatically generating pinyin codes from table data in SQL server:

1. Create a method and pass in a parameter. This parameter is what kind of data you want to automatically generate the Pinyin code.

The following code can be directly copied to your editor to run. After running, you can call the  fn_GetPy(str) method.

 CREATE  function  fn_GetPy(@str  nvarchar(4000))  
  returns  nvarchar(4000)  
  --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)  >=  '铪'  then  'H'  
  when  substring(@str,@intLen,1)  >=  '旮'  then  'G'  
  when  substring(@str,@intLen,1)  >=  '发'  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  
  --对于汉字特殊字符，不生成拼音码  
  if  (ascii(@temp)>127)  set  @temp  =  ''  
  --对于英文中小括号，不生成拼音码  
  if  @temp  =  '('  or  @temp  =  ')'  set  @temp  =  ''  
  select  @strRet  =  @temp  +  @strRet  
  set  @intLen  =  @intLen  -  1  
  end  
  return  lower(@strRet)  
  end 
  

2. After performing step one, you can directly substitute the method: fn_GetPy(str), str is the parameter to be passed in.

Examples:

Automatically generate a pinyin code from the name field in the table department table (DicDept_KS). Note: Code, Name, and PYM are all fields in the table DicDept_KS.

--Query whether the pinyin code is generated in this department table, and modify it after confirming that the pinyin code is generated

SELECT Code, name , dbo.fn_GetPy(name) AS PYM  FROM dbo.DicDept_KS

--Modify the PYM field in the department table to the generated pinyin code

update dbo.DicDept_KS set  PYM =dbo.fn_GetPy(name )

 The final result is as follows:

--The UPPER (str ) function can be used to convert the generated Pinyin code into uppercase .

SELECT  Code ,Name,UPPER(PYM) as PYM   FROM   DICDEPT_KS