SQL2005CLR函数扩展-繁简转换的实现代码

这个方法比较简单，用microsoft.visualbasic命名空间下强大的字符串处理函数就可以了
c#代码如下，编译为bigconvertor.dll
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using system;
using system.data.sqltypes;
using microsoft.sqlserver.server;

public partial class userdefinedfunctions
{
    [microsoft.sqlserver.server.sqlfunction ]
    public static sqlstring bigtogb(sqlstring instring)
    {
        if (instring.isnull) return sqlstring .null;
        return (microsoft.visualbasic.strings .strconv(instring.value, microsoft.visualbasic.vbstrconv .simplifiedchinese, 0));
    }
     [microsoft.sqlserver.server.sqlfunction ]
    public static sqlstring gbtobig(sqlstring instring)
    {
        if (instring.isnull) return sqlstring .null;
        return (microsoft.visualbasic.strings .strconv(instring.value, microsoft.visualbasic.vbstrconv .traditionalchinese, 0));
    }
};

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部署代码如下
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create assembly bigconvertor from 'e:/sqlclrdata/bigconvertor.dll' with permission_set = unsafe;
--
go
create function dbo. xfn_bigtogb 
(  
    @value nvarchar ( max )
)    
returns nvarchar ( max )
as external name bigconvertor. userdefinedfunctions. bigtogb
go
create function dbo. xfn_gbtobig 
(  
    @value nvarchar ( max )
)    
returns nvarchar ( max )
as external name bigconvertor. userdefinedfunctions. gbtobig

go

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测试代码如下
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/* 测试 */
select dbo. xfn_gbtobig( ' 简体与繁体文的转换 ' )
-- 簡體與繁體文的轉換
select dbo. xfn_bigtogb( ' 簡體與繁體文的轉換 ' )
-- 简体与繁体文的转换