SQL Server中实现汉语拼音搜索

用函数实现

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_GetPy]') and xtype in (N'FN', N'IF', N'TF'))

drop function [dbo].[f_GetPy]

GO

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

调用时:

select username from register where dbo.f_GetPy(left(username,1)) = 'L'