sql存储过程获取汉字拼音头字母函数

代码如下：

--函数 
CREATE function fn_GetPy(@str nvarchar(4000)) 
returns nvarchar(4000) 
--WITH ENCRYPTION 
as 
begin 
declare @intLenint 
declare @strRetnvarchar(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) >= '' then 'Z' 
when substring(@str,@intLen,1) >= '丫' then 'Y' 
when substring(@str,@intLen,1) >= '夕' then 'X' 
when substring(@str,@intLen,1) >= '' then 'W' 
when substring(@str,@intLen,1) >= '他' then 'T' 
when substring(@str,@intLen,1) >= '仨' then 'S' 
when substring(@str,@intLen,1) >= '' then 'R' 
when substring(@str,@intLen,1) >= '七' then 'Q' 
when substring(@str,@intLen,1) >= 'r' then 'P' 
when substring(@str,@intLen,1) >= '噢' then 'O' 
when substring(@str,@intLen,1) >= '' then 'N' 
when substring(@str,@intLen,1) >= '`' 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) >= '' then 'E' 
when substring(@str,@intLen,1) >= '' 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 
go 
--调用 
select dbo.fn_getpy('张三') 
--返回：zs 
答！： 2: 
取汉字拼音首字母的存储过程 
Create function fun_getPY ( @str nvarchar(4000) ) 
returns nvarchar(4000) 
as 
begin 
declare @word nchar(1),@PY nvarchar(4000) 
set @PY='' 
while len(@str)>0 
begin 
set @word=left(@str,1) 
--如果非汉字字符，返回原字符 
set @PY=@PY+(case when unicode(@word) between 19968 and 19968+20901 
then ( 
select top 1 PY 
from 
( 
select 'A' as PY,N'' as word 
union all select 'B',N'簿' 
union all select 'C',N'e' 
union all select 'D',N'z' 
union all select 'E',N'' 
union all select 'F',N'v' 
union all select 'G',N'B' 
union all select 'H',N'' 
union all select 'J',N'h' 
union all select 'K',N'i' 
union all select 'L',N'w' 
union all select 'M',N'' 
union all select 'N',N'' 
union all select 'O',N'a' 
union all select 'P',N'曝' 
union all select 'Q',N'' 
union all select 'R',N'U' 
union all select 'S',N'R' 
union all select 'T',N'X' 
union all select 'W',N'F' 
union all select 'X',N'R' 
union all select 'Y',N'' 
union all select 'Z',N'' 
) T 
where word>=@word collate Chinese_PRC_CS_AS_KS_WS 
order by PY ASC 
) 
else @word 
end) 
set @str=right(@str,len(@str)-1) 
end 
return @PY 
end