sql存储过程获取汉字拼音头字母函数

--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