取汉字拼音首字母的存储过程

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 · 212 阅读

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#存储 #function #fun #c

本文介绍了一个SQL函数，用于将输入的汉字字符串转换为对应的汉语拼音。该函数通过逐字符检查并利用预定义的汉字拼音对照表来实现转换。

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)

if @word='属' set @word='S'

    --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