SqlServer 汉字转换拼音码函数

最新推荐文章于 2023-09-02 15:24:46 发布

转载最新推荐文章于 2023-09-02 15:24:46 发布 · 298 阅读

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原文链接：http://www.cnblogs.com/whz881027/articles/2124708.html

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#数据库

本文介绍了一个 SQL Server 的自定义函数 uf_GetPY，该函数用于将输入的汉字字符串转换为对应的拼音首字母缩写。通过一系列条件判断和拼音对照表，实现了对特殊地名和普通汉字的有效处理。

CREATE function [dbo].[uf_GetPY](@str nvarchar(4000))
returns nvarchar(4000)
as
begin
    set @str=RTRIM(@str)
    declare @word nchar(1),@PY nvarchar(4000)
    set @PY=''
    while len(@str)>0
    begin
        --处理常用多音字
        if len(@str)>=2
        begin
   if left(@str,2)='重庆'
   begin
      set @PY=@PY+'CQ'
      if LEN(@str)>2
      set @str=right(@str,len(@str)-2)
      else
      set @str=''
   end
   if left(@str,2)='西藏'
   begin
      set @PY=@PY+'XZ'
      if LEN(@str)>2
      set @str=right(@str,len(@str)-2)
      else
      set @str=''
   end
   if left(@str,2)='藏族'
   begin
      set @PY=@PY+'ZZ'
      if LEN(@str)>2
      set @str=right(@str,len(@str)-2)
      else
      set @str=''
   end
        end
        --汉字返回拼音首字母
        if LEN(@str)>0
        begin
        set @word=left(@str,1)
        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 --非汉字字符，返回原字符
                              @word
                      end)
        set @str=right(@str,len(@str)-1)
        end
    end
    return @PY
end
GO