常用SQL函数之中文转首字母拼音

常用SQL函数之中文转首字母拼音

USE [GZMetroRmsWF]
GO

/****** Object:  UserDefinedFunction [dbo].[fGetPy]    Script Date: 07/08/2013 15:11:02 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

/*
  Description:获取字符串拼音的首字母
*/
Create function [dbo].[fGetPy](@Str varchar(500)='')  
returns varchar(500)  
AS  
Begin  
 Declare @strlen int
 Declare @return varchar(500)
 Declare @ii int  
 Declare @n int,@c char(1),@chn nchar(1)  
  
 select @strlen=len(@str),@return='',@ii=0  
 set @ii=0  
 while @ii<@strlen  
 begin  
  select @ii=@ii+1,@n=63,@chn=substring(@str,@ii,1)  
  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'  --because have no 'i'  
     union all select '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'  --no 'u'  
     union all select '屲'  --no 'v'  
     union all select '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  
  if @c ='@' --英文直接返回  
    set @c=@chn  
  set @return=@return+@c  
 end  
 return(@return)  
End  
  

GO


 

 调用SELECT dbo.fGetPy('吴晓峰')

----结果:WXF

----成功调用