SQLServer中调用C#类中的方法实例（使用.NET程序集）

namespace MyDll
{
    public partial class MyClass
    {
        [SqlMethod]
        public static SqlString UrlDecode(string value)
        {
            return new SqlString(HttpUtility.UrlDecode(value));
        }
    }
}

EXEC sp_configure 'show advanced options','1';
GO
RECONFIGURE;
GO
EXEC sp_configure 'clr enabled','1'
RECONFIGURE;
GO
 
ALTER DATABASE DBName SET TRUSTWORTHY ON
GO
 
CREATE ASSEMBLY
[System.Web] FROM
'C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\System.Web.dll'
WITH permission_set = UNSAFE
GO
 
CREATE ASSEMBLY SQL_CLR_Url
FROM 'C:\MyDLL.dll'
WITH PERMISSION_SET = UNSAFE
 
GO
 
CREATE FUNCTION SqlUrlDecode(@urlstr NVARCHAR(4000))
RETURNS NVARCHAR(4000)
AS
EXTERNAL NAME SQL_CLR_Url.[SqlClr.MyClass].UrlDecode
GO

select dbo.SqlUrlDecode(Name) from Table