DetachDatabase-Methode (String, Boolean)
Trennt die angegebene Datenbank von der SQL Server-Instanz. Optional können vor dem Trennen der Datenbank Statistiken aktualisiert werden.
Namespace: Microsoft.SqlServer.Management.Smo
Assembly: Microsoft.SqlServer.Smo (in Microsoft.SqlServer.Smo.dll)
Syntax
'Declaration
Public Sub DetachDatabase ( _
databaseName As String, _
updateStatistics As Boolean _
)
'Usage
Dim instance As Server
Dim databaseName As String
Dim updateStatistics As Boolean
instance.DetachDatabase(databaseName, _
updateStatistics)
public void DetachDatabase(
string databaseName,
bool updateStatistics
)
public:
void DetachDatabase(
String^ databaseName,
bool updateStatistics
)
member DetachDatabase :
databaseName:string *
updateStatistics:bool -> unit
public function DetachDatabase(
databaseName : String,
updateStatistics : boolean
)
Parameter
- databaseName
Typ: System. . :: . .String
Ein String-Wert, der den Namen der zu trennenden Datenbank angibt.
- updateStatistics
Typ: System. . :: . .Boolean
Ein Boolean-Wert, der angibt, ob die Statistiken für die Datenbank vor dem Trennen aktualisiert werden sollen.
Wenn der Wert True ist, werden die Statistiken aktualisiert.
Wenn der Wert False ist, werden die Statistiken nicht aktualisiert.
Hinweise
The data and transaction log files of a database can be detached and then reattached to the same or another instance of SQL Server. Detaching and attaching a database is useful if you want to change the database to a different instance of SQL Server on the same computer, or if you want to move the database.
Beispiele
Visual Basic
'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
Dim owner As String
Dim logstr as String
Dim datastr as String
owner = srv.Databases("AdventureWorks2008R2").Owner
'Detach the AdventureWorks2008R2 database.
srv.DetachDatabase("AdventureWorks2008R2", False, False)
'Display information about the detached database.
Dim d As DataTable
Datastr = "C:\Program Files\Microsoft SQL Server"
Datastr = datastr + "\MSSQL10_50\MSSQL\Data\AdventureWorks2008R2_Data.mdf"
Logstr = "C:\Program Files\Microsoft SQL Server"
Logstr = datastr + "\MSSQL10_50\MSSQL\Data\AdventureWorks2008R2_Log.ldf"
d = srv.DetachedDatabaseInfo(datastr)
Dim r As DataRow
Dim c As DataColumn
For Each r In d.Rows
Console.WriteLine("==========================")
For Each c In r.Table.Columns
Console.WriteLine(c.ColumnName + " = " + r[c].ToString)
Next
Next
'Check whether the file is a detached primary file.
Console.WriteLine(srv.IsDetachedPrimaryFile(datastr))
'Attach the database
Dim sc As StringCollection
sc = New StringCollection
sc.Add(datastr)
sc.Add(logstr)
srv.AttachDatabase("AdventureWorks2008R2", sc, owner, AttachOptions.None)
PowerShell
$srv = new-object Microsoft.SqlServer.Management.Smo.Server("(local)")
$db = New-Object Microsoft.SqlServer.Management.Smo.Database
$db = $srv.Databases.Item("AdventureWorks2008R2")
$owner = $db.Owner
$srv.DetachDatabase("AdventureWorks2008R2", $FALSE, $FALSE)
$datastr = "C:\Program Files\Microsoft SQL Server"
$datastr = $datastr + "\MSSQL10_50\MSSQL\Data\AdventureWorks2008R2_Data.mdf"
$logstr = "C:\Program Files\Microsoft SQL Server"
$logstr = $logstr + "\MSSQL10_50\MSSQL\Data\AdventureWorks2008R2_Log.ldf"
$d = $srv.DetachedDatabaseInfo($datastr)
foreach ($r in $d.Rows)
{
Write-Host "=========================="
Foreach ($c in $d.Columns)
{
Write-Host $c.ColumnName "=" $r[$c].ToString()
}
}
Write-Host $srv.IsDetachedPrimaryFile($datastr)
$sc = new-object Systems.Collections.Specialized.StringCollection
$sc.Add($datastr)
$sc.Add($logstr)
$srv.AttachDatabase("AdventureWorks2008R2", $sc, $owner, [Microsoft.SqlServer.Management.Smo.AttachOptions]::None)