sqlserver 汉字转拼音 首写字母 索引 函数

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

select dbo.fun_getPY('中国') 得到：ZG

好用的函数 哈哈！

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