sql 汉字转首字母拼音

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'驁' as word
union all select 'B',N'簿'
union all select 'C',N'錯'
union all select 'D',N'鵽'
union all select 'E',N'樲'
union all select 'F',N'鰒'
union all select 'G',N'腂'
union all select 'H',N'夻'
union all select 'J',N'攈'
union all select 'K',N'穒'
union all select 'L',N'鱳'
union all select 'M',N'旀'
union all select 'N',N'桛'
union all select 'O',N'漚'
union all select 'P',N'曝'
union all select 'Q',N'囕'
union all select 'R',N'鶸'
union all select 'S',N'蜶'
union all select 'T',N'籜'
union all select 'W',N'鶩'
union all select 'X',N'鑂'
union all select 'Y',N'韻'
union all select 'Z',N'咗'
) 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

--函数调用实例：
--select dbo.fun_getPY('中华人民共和国')

-----------------------------------------------------------------
--可支持大字符集20000个汉字!

create function f_ch2py(@chn nchar(1))
returns char(1)
as
begin
declare @n int
declare @c char(1)
set @n = 63

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' union all select --because have no 'i'
'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' union all select --no 'u'
'屲' union all select --no 'v'
'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
return(@c)
end
go

select dbo.f_ch2py('中') --Z
select dbo.f_ch2py('国') --G
select dbo.f_ch2py('人') --R
select dbo.f_ch2py('镆') --M
go
-----------------调用
CREATE FUNCTION F_GetHelpCode (
@cName VARCHAR(20) )
RETURNS VARCHAR(12)
AS
BEGIN
DECLARE @i SMALLINT, @L SMALLINT , @cHelpCode VARCHAR(12), @e VARCHAR(12), @iAscii SMALLINT
SELECT @i=1, @L=0 , @cHelpCode=''
while @L<=12 AND @i<=LEN(@cName) BEGIN
SELECT @e=LOWER(SUBSTRING(@cname,@i,1))
SELECT @iAscii=ASCII(@e)
IF @iAscii>=48 AND @iAscii <=57 OR @iAscii>=97 AND @iAscii <=122 or @iAscii=95
SELECT @cHelpCode=@cHelpCode +@e
ELSE
IF @iAscii>=176 AND @iAscii <=247
SELECT @cHelpCode=@cHelpCode + dbo.f_ch2py(@e)
ELSE SELECT @L=@L-1
SELECT @i=@i+1, @L=@L+1 END
RETURN @cHelpCode
END
GO

--调用
select dbo.F_GetHelpCode('大力')
------------------------------------------------
/*
函数名称:GetPY
实现功能:将一串汉字输入返回每个汉字的拼音首字母
如输入-->'经营承包责任制'-->输出-->JYCBZRZ.
完成时间:2005-09-18
作者:郝瑞军
参数:@str-->是你想得到拼音首字母的汉字
返回值:汉字的拼音首字母
*/
create function GetPY(@str varchar(500))
returns varchar(500)
as
begin
declare @cyc int,@length int,@str1 varchar(100),@charcate varbinary(20)
set @cyc=1--从第几个字开始取
set @length=len(@str)--输入汉字的长度
set @str1=''--用于存放返回值
while @cyc<=@length
begin
select @charcate=cast(substring(@str,@cyc,1) as varbinary)--每次取出一个字并将其转变成二进制,便于与GBK编码表进行比较
if @charcate>=0XB0A1 and @charcate<=0XB0C4
set @str1=@str1+'A'--说明此汉字的首字母为A,以下同上
else if @charcate>=0XB0C5 and @charcate<=0XB2C0
set @str1=@str1+'B'
else if @charcate>=0XB2C1 and @charcate<=0XB4ED
set @str1=@str1+'C'
else if @charcate>=0XB4EE and @charcate<=0XB6E9
set @str1=@str1+'D'
else if @charcate>=0XB6EA and @charcate<=0XB7A1
set @str1=@str1+'E'
else if @charcate>=0XB7A2 and @charcate<=0XB8C0
set @str1=@str1+'F'
else if @charcate>=0XB8C1 and @charcate<=0XB9FD
set @str1=@str1+'G'
else if @charcate>=0XB9FE and @charcate<=0XBBF6
set @str1=@str1+'H'
else if @charcate>=0XBBF7 and @charcate<=0XBFA5
set @str1=@str1+'J'
else if @charcate>=0XBFA6 and @charcate<=0XC0AB
set @str1=@str1+'K'
else if @charcate>=0XC0AC and @charcate<=0XC2E7
set @str1=@str1+'L'
else if @charcate>=0XC2E8 and @charcate<=0XC4C2
set @str1=@str1+'M'
else if @charcate>=0XC4C3 and @charcate<=0XC5B5
set @str1=@str1+'N'
else if @charcate>=0XC5B6 and @charcate<=0XC5BD
set @str1=@str1+'O'
else if @charcate>=0XC5BE and @charcate<=0XC6D9
set @str1=@str1+'P'
else if @charcate>=0XC6DA and @charcate<=0XC8BA
set @str1=@str1+'Q'
else if @charcate>=0XC8BB and @charcate<=0XC8F5
set @str1=@str1+'R'
else if @charcate>=0XC8F6 and @charcate<=0XCBF9
set @str1=@str1+'S'
else if @charcate>=0XCBFA and @charcate<=0XCDD9
set @str1=@str1+'T'
else if @charcate>=0XCDDA and @charcate<=0XCEF3
set @str1=@str1+'W'
else if @charcate>=0XCEF4 and @charcate<=0XD1B8
set @str1=@str1+'X'
else if @charcate>=0XD1B9 and @charcate<=0XD4D0
set @str1=@str1+'Y'
else if @charcate>=0XD4D1 and @charcate<=0XD7F9
set @str1=@str1+'Z'
set @cyc=@cyc+1--取出输入汉字的下一个字
end
return @str1--返回输入汉字的首字母
end

--测试数据
--select dbo.GetPY('从来就是这样酷,我酷,就是酷,看你能把我怎么样,哈哈')