如何把一个表中的列的文字转换一下

[lsyyfj]

如一列的汉字
前片 --QP
后片 HP

[dawugui]

--获取拼音首字母函数
create function f_GetPy(@str nvarchar(4000))
returns nvarchar(4000)
as
begin
declare @strlen int,@re nvarchar(4000)
declare @t table(chr nchar(1) collate Chinese_PRC_CI_AS,letter nchar(1))
insert into @t(chr,letter)
  select '吖','A' union all select '八','B' union all
  select '嚓','C' union all select '咑','D' union all
  select '妸','E' union all select '发','F' union all
  select '旮','G' union all select '铪','H' union all
  select '丌','J' union all select '咔','K' union all
  select '垃','L' union all select '嘸','M' union all
  select '拏','N' union all select '噢','O' union all
  select '妑','P' union all select '七','Q' union all
  select '呥','R' union all select '仨','S' union all
  select '他','T' union all select '屲','W' union all
  select '夕','X' union all select '丫','Y' union all
  select '帀','Z'
  select @strlen=len(@str),@re=''
  while @strlen>0
  begin
    select top 1 @re=letter+@re,@strlen=@strlen-1
      from @t a where chr<=substring(@str,@strlen,1)
      order by chr desc
    if @@rowcount=0
      select @re=substring(@str,@strlen,1)+@re,@strlen=@strlen-1
  end
  return(@re)
end
go
--调用
create table tb(col varchar(10))
insert into tb values('潇洒老乌龟')
insert into tb values('孤星')

go
select 按拼音首字母 = dbo.f_GetPy(col) from tb

drop table tb
drop function f_GetPy

/*
按拼音首字母
------------
XSLWG
GX

(2 行受影响)
*/

[-狙击手-]

不懂

[dawugui]

--获取拼音首字母函数
create function f_GetPy(@str nvarchar(4000))
returns nvarchar(4000)
as
begin
declare @strlen int,@re nvarchar(4000)
declare @t table(chr nchar(1) collate Chinese_PRC_CI_AS,letter nchar(1))
insert into @t(chr,letter)
  select '吖','A' union all select '八','B' union all
  select '嚓','C' union all select '咑','D' union all
  select '妸','E' union all select '发','F' union all
  select '旮','G' union all select '铪','H' union all
  select '丌','J' union all select '咔','K' union all
  select '垃','L' union all select '嘸','M' union all
  select '拏','N' union all select '噢','O' union all
  select '妑','P' union all select '七','Q' union all
  select '呥','R' union all select '仨','S' union all
  select '他','T' union all select '屲','W' union all
  select '夕','X' union all select '丫','Y' union all
  select '帀','Z'
  select @strlen=len(@str),@re=''
  while @strlen>0
  begin
    select top 1 @re=letter+@re,@strlen=@strlen-1
      from @t a where chr<=substring(@str,@strlen,1)
      order by chr desc
    if @@rowcount=0
      select @re=substring(@str,@strlen,1)+@re,@strlen=@strlen-1
  end
  return(@re)
end
go
--调用
select * from a order by case Name when '其他' then 1 else 0 end,dbo.f_GetPy(Name)





--获取字符串拼音字头
--Pqs 2006-11-20
--@Char 输入的字符串
CREATE function dbo.GetPY (@Char varchar(100))  
returns varchar(100) as 
begin
 --字符串长度		返回数据		遍历字符串位置		遍历的字符
 declare @i_Len int, @c_Return varchar(100), @i_pos int,@c varchar(2),@c_CN varchar(100)
 --初始化数据
 --set @str='龙岂池中物'
 set @i_Len = len(@Char)
 set @c_Return = ''
 set @i_pos = 0 
 --遍历字符串 
 while (@i_pos < @i_Len )
 begin
  set @i_pos = @i_pos + 1
  set @c_CN = substring(@Char, @i_pos, 1)
  if (@c_CN > 'z' )
  --中文处理，查询匹配
  begin
         set @c = case when @c_CN>='帀' then 'Z' 	 when @c_CN>='丫' and @c_CN<'帀' then 'Y'	 when @c_CN>='夕' and @c_CN<'丫' then 'X'	 when @c_CN>='屲' and @c_CN<'夕' then 'W'
		 when @c_CN>='他' and @c_CN<'屲' then 'T'	 when @c_CN>='仨' and @c_CN<'他' then 'S'	 when @c_CN>='呥' and @c_CN<'仨' then 'R'	 when @c_CN>='七' and @c_CN<'呥' then 'Q'
		 when @c_CN>='妑' and @c_CN<'七' then 'P'	 when @c_CN>='噢' and @c_CN<'妑' then 'O'	 when @c_CN>='拏' and @c_CN<'噢' then 'N'	 when @c_CN>='嘸' and @c_CN<'拏' then 'M'
		 when @c_CN>='垃' and @c_CN<'嘸' then 'L'	 when @c_CN>='咔' and @c_CN<'垃' then 'K'	 when @c_CN>='丌' and @c_CN<'咔' then 'J'	 when @c_CN>='铪' and @c_CN<'丌' then 'H'
		 when @c_CN>='旮' and @c_CN<'铪' then 'G'	 when @c_CN>='发' and @c_CN<'旮' then 'F'	 when @c_CN>='妸' and @c_CN<'发' then 'E'	 when @c_CN>='咑' and @c_CN<'妸' then 'D'
		 when @c_CN>='嚓' and @c_CN<'咑' then 'C'	 when @c_CN>='八' and @c_CN<'嚓' then 'B'	 when @c_CN>='吖' and @c_CN<'八' then 'A'	 Else '' End
--   	select  top 1 @c = Code  from Code_PY   where name <= @c_CN
  end
  else
  begin
	--过滤字符（除了字符、数字和'.'外的所有字符）
	if (@c_CN>='a' or (@c_CN>='0' and @c_CN<='9') or @c_CN='.')
		set @c=@c_CN
	else
		set @c=''
  end
  
  set @c_Return=@c_Return+isnull(@c ,'')
 end
 return  upper(@c_Return)
end

[wzy_love_sly]

replace(列,'a','')
把列的字符‘a'换成'b'?

[-狙击手-]

update table
set col = case when col = '前片' then '后片' else col end

[tim_spac]

这个帖子好像应该放到"疑难问题"区 :)

[dawugui]

应该是这个意思.

[lsyyfj]

潇洒老乌龟你这个如何用呀能说明一下

[dawugui]

在sql里面创建这个函数,然后调用它即可.

[lsyyfj]

我的意思就是说把一个表中的一个字段的汉字，都转换为拼音首个字母，能不能一次性都做好呀那个表有10000个记录

[dobear_0922]

update table
set col = case when col when '前片' then 'QP' when '后片' then 'HP' end