sql 中文转拼音首字母

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lxw1844912514 发表于 2022/03/27 01:59:32 2022/03/27
【摘要】 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 ...

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')

 

文章来源: blog.csdn.net,作者:lxw1844912514,版权归原作者所有,如需转载,请联系作者。

原文链接:blog.csdn.net/lxw1844912514/article/details/100028568

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