SQL server数据库创建代码，filegroup文件组修改，

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 mydb
on 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);
go
alter 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