create function [PinYin](@strChinese varchar(500)='') 
returns varchar(500) 
as 
begin 
     declare @strLen int,@return varchar(500),@i int 
     declare @n int,@c char(1),@chn nchar(1)  
     select @strLen=len(@strChinese),@return='',@i=0 
     while @i<@strLen 
     begin 
             select @i=@i+1,@n=63,@chn=substring(@strChinese,@i,1) 
             if @chn>'z'/*原理:“字符串排序以及ASCII码表”*/                
                 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  
             else
                 set @c=@chn
             set @return=@return+@c  
     end 
     return(@return)  
end 

