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  • mssql 中文转拼音首字母

     

    在做列车时刻表进行搜索时用到中文转拼音首字母时需要以下函数

    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'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

    --测试
    select dbo.fun_getPY('t北京大学医学部')

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  • 原文地址:https://www.cnblogs.com/liangyuwen/p/13233638.html
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