根据汉字的首字母转换成拼音(oracle)

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本文介绍了一个SQL函数，用于将中文姓名转换成对应的汉语拼音，并通过一个示例展示了如何使用该函数来更新数据库表中的拼音字段。

--创建函数
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'骜' as word 
union all select 'B',N'簿' 
union all select 'C',N'错' 
union all select 'D',N'鵽' 
union all select 'E',N'樲' 
union all select 'F',N'鳆' 
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'沤' 
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'箨' 
union all select 'W',N'鹜' 
union all select 'X',N'鑂' 
union all select 'Y',N'韵' 
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 


--根据s_person表中的name(汉语名字)字段更新spell(汉语拼音)字段
update s_person set spell= dbo.fun_getPY(name)