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        T-SQL入門攻略之修改數(shù)據(jù)庫alter database

        字號(hào):


            更改數(shù)據(jù)庫名
            (1)
            alter database database_name
            modify name=new_database_name
            (2)
            sp_renamedb olddbname,newdbname
            添加數(shù)據(jù)文件和文件組(擴(kuò)大)
            (1)添加數(shù)據(jù)文件
            USE master
            GO
            DECLARE @data_path nvarchar(256);
            -- 獲取主數(shù)據(jù)文件的存放位置
            SELECT @data_path=physical_name
            FROM MyDatabase.sys.database_files
            WHERE file_id=1;
            SET @data_path=SUBSTRING(@data_path, 1, CHARINDEX(LOWER('MyDatabase.mdf'), LOWER(@data_path)) - 1);
            -- 添加數(shù)據(jù)文件(放在主數(shù)據(jù)文件所在的目錄下)
            go
            ALTER DATABASE MyDatabase
            ADD FILE
            (
            NAME = LogicNameOfDataFile1_1,
            FILENAME = 'D:/Program Files/Microsoft SQL Server/MSSQL.1/MSSQL/DATA/DataFile1_1.ndf',
            SIZE = 5MB,
            MAXSIZE = 100MB,
            FILEGROWTH = 5MB
            )
            (2)添加日志文件
            USE master
            GO
            DECLARE @data_path nvarchar(256);
            --獲取主數(shù)據(jù)文件的存放位置
            SELECT @data_path=physical_name
            FROM MyDatabase.sys.database_files
            WHERE file_id=1;
            SET @data_path=SUBSTRING(@data_path, 1, CHARINDEX(LOWER('MyDatabase.mdf'), LOWER(@data_path)) - 1);
            --添加數(shù)據(jù)文件(放在主數(shù)據(jù)文件所在的目錄下)
            go
            ALTER DATABASE MyDatabase
            ADD LOG FILE
            (
            NAME = LogicNameOfLogFile1_1,
            FILENAME = 'D:/Program Files/Microsoft SQL Server/MSSQL.1/MSSQL/DATA/LogFile1_1.ldf',
            SIZE = 2MB,
            MAXSIZE = 50MB,
            FILEGROWTH = 3MB
            )
            (3)添加文件及文件組
            USE master
            GO
            -- 創(chuàng)建文件組_1
            ALTER DATABASE MyDatabase
            ADD FILEGROUP UserFG1_1;
            GO
            DECLARE @data_path nvarchar(256);
            --獲取主數(shù)據(jù)文件的存放位置
            SELECT @data_path=physical_name
            FROM MyDatabase.sys.database_files
            WHERE file_id=1;
            SET @data_path=SUBSTRING(@data_path, 1, CHARINDEX(LOWER('MyDatabase.mdf'), LOWER(@data_path)) - 1);
            --添加數(shù)據(jù)文件(放在主數(shù)據(jù)文件所在的目錄下)
            Go
            ALTER DATABASE MyDatabase
            ADD FILE
            (
            NAME = LogicNameOfDataFile1_2,
            FILENAME = 'D:/Program Files/Microsoft SQL Server/MSSQL.1/MSSQL/DATA/DataFile1_2.ndf',
            SIZE = 10MB,
            MAXSIZE = 50MB,
            FILEGROWTH = 5MB
            ),
            (
            NAME = LogicNameOfDataFile1_3,
            FILENAME = 'D:/Program Files/Microsoft SQL Server/MSSQL.1/MSSQL/DATA/DataFile1_3.ndf',
            SIZE = 5MB,
            MAXSIZE = 50MB,
            FILEGROWTH = 2MB
            )
            TO FILEGROUP UserFG1_1
            注:以上添加數(shù)據(jù)文件時(shí)如果不指定所在文件組那么將被默認(rèn)添加到主文件組中
            更改數(shù)據(jù)文件和文件組
            (1)更改數(shù)據(jù)庫的數(shù)據(jù)文件
            USE master
            GO
            ALTER DATABASE MyDatabase2
            MODIFY FILE
            (
            NAME = LogicNameOfDataFile2,
            NEWNAME = newLogicNameOfDataFile2,
            FILENAME
            ='C:/Program Files/Microsoft SQL Server/MSSQL10.MSSQLSERVER/MSSQL/DATA/newDataFile2.mdf',
            SIZE = 25MB,
            MAXSIZE = 150MB,
            FILEGROWTH = 10MB
            )
            (2)更改數(shù)據(jù)庫的日志文件
            USE master
            GO
            ALTER DATABASE MyDatabase3
            MODIFY FILE
            (
            NAME = MyDatabase3_log,
            FILENAME
            ='C:/Program Files/Microsoft SQL Server/MSSQL10.MSSQLSERVER/MSSQL/DATA/LogFile3.LDF',
            SIZE = 10MB , -- 設(shè)置初始大小
            MAXSIZE = 50MB, -- 設(shè)置文件的最大存儲(chǔ)空間
            FILEGROWTH = 5MB -- 設(shè)置自動(dòng)增長幅度
            )
            (3)更改文件組名稱
            USE master
            GO
            ALTER DATABASE MyDatabase6
            MODIFY FILEGROUP UserFG6_2 NAME = newUserFG6_2
            GO
            (4)更改默認(rèn)文件組
            USE master;
            GO
            ALTER DATABASE MyDatabase6
            MODIFY FILEGROUP newUserFG6_2 DEFAULT;
            GO
            ALTER DATABASE MyDatabase6
            MODIFY FILEGROUP [PRIMARY] DEFAULT;
            GO