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根据汉字查询汉字的首字母 sql

转载请注明:http://www.pmjava.com/Article/ShowInfo.asp?ID=56719
ALTER FUNCTION [dbo].[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''
union all select 'D',N''
union all select 'E',N''
union all select 'F',N''
union all select 'G',N''
union all select 'H',N''
union all select 'J',N''
union all select 'K',N''
union all select 'L',N''
union all select 'M',N''
union all select 'N',N''
union all select 'O',N''
union all select 'P',N''
union all select 'Q',N''
union all select 'R',N''
union all select 'S',N''
union all select 'T',N''
union all select 'W',N''
union all select 'X',N''
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

                                                                  

posted on 2009-06-12 18:20 rrong_m 阅读(269) 评论(0)  编辑  收藏

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