select isnull(nickname,email) as NickName from UserInfo order by NickName desc 得到的结果如下:我是超人
潘表
[email protected]
[email protected]
testPanny
[email protected]
DSA
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]我但想要的结果是;[email protected]
我却完全请问
[email protected]
testPanny
潘表
[email protected]
DSA
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]应该怎么写语句?
create function [dbo].[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 order by dbo.f_getpy(NickName) desc
CREATE TABLE aword(
PY varchar(10),
ZW nvarchar(10)
) ON [PRIMARY]
GO
--插入数据
insert into aword
select 'A',N'骜'
union all select 'B',N'簿'
union all select 'C',N'错'
union all select 'D',N'鵽'
union all select 'E',N'樲'
union all select 'F',N'鳆'
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'沤'
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'箨'
union all select 'W',N'鹜'
union all select 'X',N'鑂'
union all select 'Y',N'韵'
union all select 'Z',N'咗'
GO
--建立一个获取拼音首字母的函数
create function f_GetPY
(
@str nvarchar(2)
)
returns nvarchar(2)
as
begin
set @str = left(@str, 1)
return (
case when unicode(@str) between 19968 and 19968+20901 then(
select top 1 PY+'.' from aword where ZW>=@str
collate Chinese_PRC_CS_AS_KS_WS order by PY ASC
) else @str end
)
end
GO --> 查询结果
SELECT * FROM t1 Order by dbo.f_GetPY(name)desc