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  • sql 中文转拼音首字母

    http://blog.csdn.net/zhanglong_longlong/article/details/46772571

    --可支持大字符集20000个汉字!
    
    create function f_ch2py(@chn nchar(1))
    returns char(1)
    as
    begin
    declare @n int
    declare @c char(1)
    set @n = 63
    
    select @n = @n +1,
           @c = case chn when @chn then char(@n) else @c end
    from(
    select top 27 * from (
         select chn = 
    '吖' union all select
    '八' union all select
    '嚓' union all select
    '咑' union all select
    '妸' union all select
    '发' union all select
    '旮' union all select
    '铪' union all select
    '丌' union all select  --because have no 'i'
    '丌' union all select
    '咔' union all select
    '垃' union all select
    '嘸' union all select
    '拏' union all select
    '噢' union all select
    '妑' union all select
    '七' union all select
    '呥' union all select
    '仨' union all select
    '他' union all select
    '屲' union all select  --no 'u'
    '屲' union all select  --no 'v'
    '屲' union all select
    '夕' union all select
    '丫' union all select
    '帀' union all select @chn) as a
    order by chn COLLATE Chinese_PRC_CI_AS 
    ) as b
    return(@c)
    end
    go
    
    select dbo.f_ch2py('中')  --Z
    select dbo.f_ch2py('国')  --G
    select dbo.f_ch2py('人')  --R
    select dbo.f_ch2py('镆')  --M
    go
    -----------------调用
    CREATE FUNCTION F_GetHelpCode (
            @cName VARCHAR(20) )
    RETURNS VARCHAR(12)
    AS
    BEGIN
       DECLARE @i SMALLINT, @L SMALLINT , @cHelpCode VARCHAR(12), @e VARCHAR(12), @iAscii SMALLINT
       SELECT @i=1, @L=0 , @cHelpCode=''
       while @L<=12 AND @i<=LEN(@cName) BEGIN
          SELECT @e=LOWER(SUBSTRING(@cname,@i,1))
          SELECT @iAscii=ASCII(@e)
          IF @iAscii>=48 AND @iAscii <=57 OR @iAscii>=97 AND @iAscii <=122 or @iAscii=95 
           SELECT @cHelpCode=@cHelpCode  +@e
          ELSE
          IF @iAscii>=176 AND @iAscii <=247
                SELECT @cHelpCode=@cHelpCode  + dbo.f_ch2py(@e)
            ELSE SELECT @L=@L-1
          SELECT @i=@i+1, @L=@L+1 END 
        RETURN @cHelpCode
    END
    GO
    
    --调用
    select dbo.F_GetHelpCode('大力')
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  • 原文地址:https://www.cnblogs.com/lxwphp/p/8183426.html
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