使用檔案群組和檔案來儲存數據
適用於：
SQL ServerAzure SQL 資料庫 Azure SQL 受控執行個體 Azure Synapse Analytics
數據檔可用來儲存資料庫檔案。 數據檔會細分為檔案群組。 物件 Database 具有 FileGroups 參考 FileGroupCollection 對象的屬性。 FileGroup該集合中的每個物件都有 Files 屬性。 這個屬性是指 DataFileCollection 集合，其中包含屬於資料庫的所有數據檔。 檔案群組主要用來將用來儲存資料庫對象的檔案群組在一起。 將資料庫物件分散到數個檔案的其中一個原因是它可以改善效能，特別是當檔案儲存在不同的磁碟驅動器上時。
每個自動建立的資料庫都有名為 「Primary」 的檔案群組，以及與資料庫同名的數據檔。 您可以將其他檔案和群組新增至集合。
範例
針對下列程式代碼範例，您必須選取程式設計環境、程式設計範本和程式設計語言，才能建立您的應用程式。 如需詳細資訊，請參閱 在Visual Studio .NET 中建立Visual C# SMO 專案。
在 Visual Basic 中將 FileGroups 和 DataFiles 新增至資料庫
主要檔案群組和數據文件會自動使用預設屬性值來建立。 程式代碼範例會指定一些您可以使用的屬性值。 否則會使用預設屬性值。
'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks2022 database.
Dim db As Database
db = srv.Databases("AdventureWorks2022")
'Define a FileGroup object called SECONDARY on the database.
Dim fg1 As FileGroup
fg1 = New FileGroup(db, "SECONDARY")
'Call the Create method to create the file group on the instance of SQL Server.
fg1.Create()
'Define a DataFile object on the file group and set the FileName property.
Dim df1 As DataFile
df1 = New DataFile(fg1, "datafile1")
df1.FileName = "c:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\datafile2.ndf"
'Call the Create method to create the data file on the instance of SQL Server.
df1.Create()
在 Visual C 中將 FileGroups 和 DataFiles 新增至資料庫#
主要檔案群組和數據文件會自動使用預設屬性值來建立。 程式代碼範例會指定一些您可以使用的屬性值。 否則會使用預設屬性值。
{
Server srv = new Server();
//Reference the AdventureWorks2022 database.
Database db = default(Database);
db = srv.Databases["AdventureWorks2022"];
//Define a FileGroup object called SECONDARY on the database.
FileGroup fg1 = default(FileGroup);
fg1 = new FileGroup(db, "SECONDARY");
//Call the Create method to create the file group on the instance of SQL Server.
fg1.Create();
//Define a DataFile object on the file group and set the FileName property.
DataFile df1 = default(DataFile);
df1 = new DataFile(fg1, "datafile1");
df1.FileName = "c:\\Program Files\\Microsoft SQL Server\\MSSQL.1\\MSSQL\\Data\\datafile2.ndf";
//Call the Create method to create the data file on the instance of SQL Server.
df1.Create();
}
在 PowerShell 中將 FileGroups 和 DataFiles 新增至資料庫
主要檔案群組和數據文件會自動使用預設屬性值來建立。 程式代碼範例會指定一些您可以使用的屬性值。 否則會使用預設屬性值。
# Set the path context to the local, default instance of SQL Server.
CD \sql\localhost\default\Databases\
#And the database object corresponding to AdventureWorks2022.
$db = get-item AdventureWorks2022
#Create a new filegroup
$fg1 = New-Object -TypeName Microsoft.SqlServer.Management.SMO.Filegroup -argumentlist $db, "SECONDARY"
$fg1.Create()
#Define a DataFile object on the file group and set the FileName property.
$df1 = New-Object -TypeName Microsoft.SqlServer.Management.SMO.DataFile -argumentlist $fg1, "datafile1"
#Make sure to have a directory created to hold the designated data file
$df1.FileName = "c:\\TestData\\datafile2.ndf"
#Call the Create method to create the data file on the instance of SQL Server.
$df1.Create()
在 Visual Basic 中建立、改變和移除記錄檔
程式代碼範例會 LogFile 建立 對象、變更其中一個屬性，然後將它從資料庫移除。
'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks2022 database.
Dim db As Database
db = srv.Databases("AdventureWorks2022")
'Define a LogFile object and set the database, name, and file name properties in the constructor.
Dim lf1 As LogFile
lf1 = New LogFile(db, "logfile1", "c:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\logfile1.ldf")
'Set the file growth to 6%.
lf1.GrowthType = FileGrowthType.Percent
lf1.Growth = 6
'Run the Create method to create the log file on the instance of SQL Server.
lf1.Create()
'Alter the growth percentage.
lf1.Growth = 7
lf1.Alter()
'Remove the log file.
lf1.Drop()
在 Visual C 中建立、改變和移除記錄檔#
程式代碼範例會 LogFile 建立 對象、變更其中一個屬性，然後將它從資料庫移除。
//Connect to the local, default instance of SQL Server.
Server srv = new Server();
//Reference the AdventureWorks2022 database.
Database db = default(Database);
db = srv.Databases["AdventureWorks2022"];
//Define a LogFile object and set the database, name, and file name properties in the constructor.
LogFile lf1 = default(LogFile);
lf1 = new LogFile(db, "logfile1", "c:\\Program Files\\Microsoft SQL Server\\MSSQL.10_50.MSSQLSERVER\\MSSQL\\Data\\logfile1.ldf");
//Set the file growth to 6%.
lf1.GrowthType = FileGrowthType.Percent;
lf1.Growth = 6;
//Run the Create method to create the log file on the instance of SQL Server.
lf1.Create();
//Alter the growth percentage.
lf1.Growth = 7;
lf1.Alter();
//Remove the log file.
lf1.Drop();
在 PowerShell 中建立、改變和移除記錄檔
程式代碼範例會 LogFile 建立 對象、變更其中一個屬性，然後將它從資料庫移除。
#Load the assembly containing the enums used in this example
[reflection.assembly]::LoadWithPartialName("Microsoft.SqlServer.SqlEnum")
# Set the path context to the local, default instance of SQL Server.
CD \sql\localhost\default\Databases\
#And the database object corresponding to AdventureWorks2022
$db = get-item AdventureWorks2022
#Create a filegroup
$fg1 = New-Object -TypeName Microsoft.SqlServer.Management.SMO.Filegroup -argumentlist $db, "Secondary"
#Call the Create method to create the file group on the instance of SQL Server.
$fg1.Create()
#Define a LogFile object on the file group and set the FileName property.
$lf1 = New-Object -TypeName Microsoft.SqlServer.Management.SMO.LogFile -argumentlist $db, "LogFile2"
#Set a location for it - make sure the directory exists
$lf1.FileName = "logfile1", "c:\\Program Files\\Microsoft SQL Server\\MSSQL.10_50.MSSQLSERVER\\MSSQL\\Data\\logfile1.ldf"
#Set file growth to 6%
$lf1.GrowthType = [Microsoft.SqlServer.Management.Smo.FileGrowthType]::Percent
$lf1.Growth = 6.0
#Call the Create method to create the data file on the instance of SQL Server.
$lf1.Create()
#Alter a value and drop the log file
$lf1.Growth = 7.0
$lf1.Alter()
$lf1.Drop()