根據漢字的首字母轉換成拼音 oracle

--建立函式

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) 
--如果非漢字字元，返回原字元 
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 
--根據s_person表中的name(漢語名字)字段更新spell(漢語拼音)字段
update s_person set spell= dbo.fun_getpy(name)

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