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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