MSSQL基础学习--数据库操作

CREATE DATABASE test

ON
(
NAME = main_dat, 　--数据库名称
FILENAME = ‘e:/program files/Microsoft sql server/mssql/data/maindat.mdf‘, 　--物理路径
SIZE = 10, 　--初始容量,默认单位是MB
MAXSIZE = 50, 　--最大容量
FILEGROWTH = 5　　--增长值
) 

LOG ON
(
NAME = ‘main_log‘,
FILENAME = ‘e:/program files/Microsoft sql server/mssql/data/maindat.ldf‘,
SIZE = 5MB,
MAXSIZE = 25MB,
FILEGROWTH = 5MB 
) 

CREATE DATABASE company
ON

PRIMARY　--主数据文件组，可以直接用PRIMARY
(
NAME = Pri1_dat,
FILENAME = ‘e:/program files/Microsoft sql server/mssql/data/Pri1dat.mdf‘,
SIZE = 10,
MAXSIZE = 50,
FILEGROWTH = 15% 　--也可以用百分比来作为增长率
), 　--在一个组中有多个文件时，用","分隔开
(
NAME = Pri2_dat,
FILENAME = ‘e:/program files/Microsoft sql server/mssql/data/Pri2dat.ndf‘,　--一个数据库只能有1个mdf
SIZE = 10,
MAXSIZE = 50,
FILEGROWTH = 15%
),

FILEGROUP ComGroup1
(
NAME = Grp1File1_dat,
FILENAME = ‘e:/program files/Microsoft sql server/mssql/data/G1Fi1dt.ndf‘,
SIZE = 10,
MAXSIZE = 50,
FILEGROWTH = 5 
),
(
NAME = Grp1File2_dat,
FILENAME = ‘e:/program files/Microsoft sql server/mssql/data/G1Fi2dt.ndf‘,
SIZE = 10,
MAXSIZE = 50,
FILEGROWTH = 5 
),

FILEGROUP ComGroup2
(
NAME = Grp2File1_dat,
FILENAME = ‘e:/program files/Microsoft sql server/mssql/data/G2Fi1dt.ndf‘,
SIZE = 10,
MAXSIZE = 50,
FILEGROWTH = 5 
),
(
NAME = Grp2File2_dat,
FILENAME = ‘e:/program files/Microsoft sql server/mssql/data/G2Fi2dt.ndf‘,
SIZE = 10,
MAXSIZE = 50,
FILEGROWTH = 5 
)

LOG ON
(
NAME = ‘Company_log‘,
FILENAME = ‘e:/program files/Microsoft sql server/mssql/data/comlog.ldf‘,
SIZE = 5MB,
MAXSIZE = 25MB,
FILEGROWTH = 5MB 
) 

GO

sp_helpdb

sp_helpdb pubs

sp_databases

use pubs 

sp_helpfile

sp_helpfile pubs_log 　-- pubs_log是该数据库的日志文件 

sp_helpfilegroup

sp_helpfilegroup own_group

sp_dboption ‘pubs‘, ‘select into/bulkcopy‘, ‘false‘ 

-- 这个例子在Company数据库的默认文件组PRIMARY文件组里，增加了一个数据文件Pri3_dat

ALTER DATABASE Company
ADD FILE
(
NAME = Pri3_dat,
FILENAME = ‘e:program files/Microsoft sql server/mssql/data/Pri3dat.ndf‘,
SIZE = 5,
MAXSIZE = 20,
FILEGROWTH = 5 
) 

-- 这个例子增加一个数据文件Pri4_dat至组ComGroup1里

ALTER DATABASE Company 
ADD FILE
(
NAME = Pri4_dat,
FILENAME = ‘e:program files/Microsoft sql server/mssql/data/Pri4dat.ndf‘,
SIZE = 5,
MAXSIZE = 20,
FILEGROWTH = 5 
)
TO FILEGROUP ComGroup1

ALTER DATABASE Company

MODIFY FILEGROUP ComGroup1 DEFAULT

ALTER DATABASE Company
MODIFY FILE
(
NAME = Pri3_dat,
SIZE = 22,
MAXSIZE = 55,
FILEGROWTH = 3% 
)

ALTER DATABASE Company 
REMOVE FILE Pri4_dat