以下示例在 SQL Server 实例上创建了一个数据库。该数据库包括一个主数据文件、一个用户定义文件组和一个日志文件。主数据文件在主文件组中，而用户定义文件组包含两个次要数据文件。ALTER DATABASE 语句将用户定义文件组指定为默认文件组。然后通过指定用户定义文件组来创建表。

USE master;GO-- Create the database with the default data-- filegroup and a log file. Specify the-- growth increment and the max size for the-- primary data file.CREATE DATABASE MyDBON PRIMARY  ( NAME='MyDB_Primary',    FILENAME=       'c:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\data\MyDB_Prm.mdf',    SIZE=4MB,    MAXSIZE=10MB,    FILEGROWTH=1MB),FILEGROUP MyDB_FG1  ( NAME = 'MyDB_FG1_Dat1',    FILENAME =       'c:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\data\MyDB_FG1_1.ndf',    SIZE = 1MB,    MAXSIZE=10MB,    FILEGROWTH=1MB),  ( NAME = 'MyDB_FG1_Dat2',    FILENAME =       'c:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\data\MyDB_FG1_2.ndf',    SIZE = 1MB,    MAXSIZE=10MB,    FILEGROWTH=1MB)LOG ON  ( NAME='MyDB_log',    FILENAME =       'c:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\data\MyDB.ldf',    SIZE=1MB,    MAXSIZE=10MB,    FILEGROWTH=1MB);GOALTER DATABASE MyDB   MODIFY FILEGROUP MyDB_FG1 DEFAULT;GO-- Create a table in the user-defined filegroup.USE MyDB;CREATE TABLE MyTable  ( cola int PRIMARY KEY,    colb char(8) )ON MyDB_FG1;GO