得到漢字的拼音碼

create    function   f_getpy(@str   nvarchar(4000)) 

returns   nvarchar(4000) 
as begin 
declare   @strlen   int,@re   nvarchar(4000) 
declare   @t   table(chr   nchar(1)   collate   chinese_prc_ci_as,letter   nchar(1)) 
insert   into   @t(chr,letter) 
select   '吖 ', 'a '   union   all   select   '八 ', 'b '   union   all 
select   '嚓 ', 'c '   union   all   select   '咑 ', 'd '   union   all 
select   '妸 ', 'e '   union   all   select   '發 ', 'f '   union   all 
select   '旮 ', 'g '   union   all   select   '鉿 ', 'h '   union   all 
select   '丌 ', 'j '   union   all   select   '咔 ', 'k '   union   all 
select   '垃 ', 'l '   union   all   select   '嘸 ', 'm '   union   all 
select   '拏 ', 'n '   union   all   select   '噢 ', 'o '   union   all 
select   '妑 ', 'p '   union   all   select   '七 ', 'q '   union   all 
select   '呥 ', 'r '   union   all   select   '仨 ', 's '   union   all 
select   '他 ', 't '   union   all   select   '屲 ', 'w '   union   all 
select   '夕 ', 'x '   union   all   select   '丫 ', 'y '   union   all 
select   '帀 ', 'z ' 
select   @strlen=len(@str),@re= ' ' 
while   @strlen> 0 
begin 
select   top   1   @re=letter+@re,@strlen=@strlen-1 
from   @t   a   where   chr <=substring(@str,@strlen,1) 
order   by   chr   desc 
if   @@rowcount=0 
select   @re=substring(@str,@strlen,1)+@re,@strlen=@strlen-1 
end 
return(@re) 
end

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