SQL code
USE [master]
GO
ALTER DATABASE [AdventureWorks2012] ADD FILE ( NAME = N'test', FILENAME = N'D:\DB\test.ndf' , SIZE = 5120KB , FILEGROWTH = 1024KB ) TO FILEGROUP [PRIMARY]
GO
USE [master]
GO
ALTER DATABASE [AdventureWorks2012] ADD FILE ( NAME = N'test', FILENAME = N'D:\DB\test.ndf' , SIZE = 5120KB , FILEGROWTH = 1024KB ) TO FILEGROUP [PRIMARY]
GO