首字拼音查询

根据大力的贴子改成.将大力的两个函数合并成了一个函数.
可以应用于助记码的查询

作者：邹建
--*/
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[fGetPy]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[fGetPy]
GO

--创建取拼音函数
create function fGetPy(@Str varchar(500)='')
returns varchar(500)
as
begin
declare @strlen int,@return varchar(500),@ii int
declare @n int,@c char(1),@chn nchar(1)

select @strlen=len(@str),@return='',@ii=0
set @ii=0
while @ii<@strlen
begin
select @ii=@ii+1,@n=63,@chn=substring(@str,@ii,1)
if @chn>'z'
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' --because have no 'i'
union all select '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' --no 'u'
union all select '屲' --no 'v'
union all select '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
else set @c='a'
set @return=@return+@c
end
return(@return)
end

go
--测试
select dbo.fgetpy('魏保光') as 姓名拼音,dbo.fgetpy('ab中c国人') as 中国人
select dbo.fgetpy('刘子良') as 姓名拼音,dbo.fgetpy('ab中c国人') as 中国人
select dbo.fgetpy('吴过') as 姓名拼音,dbo.fgetpy('ab中c国人') as 中国人
select dbo.fgetpy('东北') as 姓名拼音,dbo.fgetpy('ab中c国人') as 中国人

--删除拼音函数
drop function fgetpy