mssql 中将汉字转换为拼音首字母方法

1.

--将汉字转换为拼音首字母

CREATE function GetAllPY(@str nvarchar(4000))

returns nvarchar(4000)

--WITH ENCRYPTION

as

begin

declare @intLen int

declare @strRet nvarchar(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) >= '帀' then 'Z'

when substring(@str,@intLen,1) >= '丫' then 'Y'

when substring(@str,@intLen,1) >= '夕' then 'X'

when substring(@str,@intLen,1) >= '屲' then 'W'

when substring(@str,@intLen,1) >= '他' then 'T'

when substring(@str,@intLen,1) >= '仨' then 'S'

when substring(@str,@intLen,1) >= '呥' then 'R'

when substring(@str,@intLen,1) >= '七' then 'Q'

when substring(@str,@intLen,1) >= '妑' then 'P'

when substring(@str,@intLen,1) >= '噢' then 'O'

when substring(@str,@intLen,1) >= '拏' then 'N'

when substring(@str,@intLen,1) >= '嘸' 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) >= '妸' then 'E'

when substring(@str,@intLen,1) >= '咑' 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

--测试

select dbo. GetAllPY('中华人民共和国')

2.

--第二种方法

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

--测试

select dbo.fun_getPY('中国山东')