SQL 汉字转换拼音首字母

最新推荐文章于 2019-07-22 23:04:00 发布

转载最新推荐文章于 2019-07-22 23:04:00 发布 · 784 阅读

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本文介绍了一个SQL Server中实现的自定义函数，该函数能够将输入的汉字字符串转换成对应的拼音字符串。通过逐字符判断并查找的方式实现了转换，适用于简单的汉字拼音需求。

CREATE function whk_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
--函数调用实例：
select dbitrenji_f.whk_fun_getPY('中华人民共和国')
--结果都为：ZHRMGHG