在 SQL SERVER 中将汉字转换为拼音 - 根据拼音搜索汉字

在项目中，有时需要根据拼音来搜索对应的汉字，找了许多资料，也参考了一些示例，这个sql函数总是解决了这个问题，而且性能是找的资料中最好的。

原理是通过这个函数将中文汉字的字段中的数据转换成拼音，再根据拼音来进行搜索。

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:  <lisky.li>
-- Create date: <2013>
-- Description: <汉字转全拼音函数>
-- =============================================
create function [dbo].[Get_QuanPin_li](@str varchar(120))
returns varchar(8000)
as
begin declare @re varchar(8000),@crs varchar(10) declare @strlen int 
select @strlen=len(@str),@re='' while @strlen>0 begin    set @crs= substring(@str,@strlen,1)      select @re=        case        when @crs<'吖' then @crs        when @crs<='厑' then 'a'        when @crs<='靉' then 'ai'        when @crs<='黯' then 'an'        when @crs<='醠' then 'ang'        when @crs<='驁' then 'ao'        when @crs<='欛' then 'ba'        when @crs<='瓸' then 'bai'        when @crs<='瓣' then 'ban'        when @crs<='鎊' then 'bang'        when @crs<='鑤' then 'bao'        when @crs<='鐾' then 'bei'        when @crs<='輽' then 'ben'        when @crs<='鏰' then 'beng'        when @crs<='鼊' then 'bi'        when @crs<='變' then 'bian'        when @crs<='鰾' then 'biao'        when @crs<='彆' then 'bie'        when @crs<='鬢' then 'bin'        when @crs<='靐' then 'bing'        when @crs<='蔔' then 'bo'        when @crs<='簿' then 'bu'        when @crs<='囃' then 'ca'        when @crs<='乲' then 'cai'        when @crs<='爘' then 'can'        when @crs<='賶' then 'cang'        when @crs<='鼜' then 'cao'        when @crs<='簎' then 'ce'        when @crs<='笒' then 'cen'        when @crs<='乽' then 'ceng'        when @crs<='詫' then 'cha'        when @crs<='囆' then 'chai'        when @crs<='顫' then 'chan'        when @crs<='韔' then 'chang'        when @crs<='觘' then 'chao'        when @crs<='爡' then 'che'        when @crs<='讖' then 'chen'        when @crs<='秤' then 'cheng'        when @crs<='鷘' then 'chi'        when @crs<='銃' then 'chong'        when @crs<='殠' then 'chou'        when @crs<='矗' then 'chu'        when @crs<='踹' then 'chuai'        when @crs<='鶨' then 'chuan'        when @crs<='愴' then 'chuang'        when @crs<='顀' then 'chui'        when @crs<='蠢' then 'chun'        when @crs<='縒' then 'chuo'        when @crs<='嗭' then 'ci'        when @crs<='謥' then 'cong'        when @crs<='輳' then 'cou'        when @crs<='顣' then 'cu'        when @crs<='爨' then 'cuan'        when @crs<='臎' then 'cui'        when @crs<='籿' then 'cun'        when @crs<='錯' then 'cuo'        when @crs<='橽' then 'da'        when @crs<='靆' then 'dai'        when @crs<='饏' then 'dan'        when @crs<='闣' then 'dang'        when @crs<='纛' then 'dao'        when @crs<='的' then 'de'        when @crs<='扽' then 'den'        when @crs<='鐙' then 'deng'        when @crs<='螮' then 'di'        when @crs<='嗲' then '