Classe Statistic

The Statistic class represents a SQL Server statistic counter.

Gerarchia di ereditarietà

System.Object
  Microsoft.SqlServer.Management.Smo.SmoObjectBase
    Microsoft.SqlServer.Management.Smo.SqlSmoObject
      Microsoft.SqlServer.Management.Smo.NamedSmoObject
        Microsoft.SqlServer.Management.Smo.ScriptNameObjectBase
          Microsoft.SqlServer.Management.Smo.Statistic

Spazio dei nomi  Microsoft.SqlServer.Management.Smo
Assembly:  Microsoft.SqlServer.Smo (in Microsoft.SqlServer.Smo.dll)

Sintassi

'Dichiarazione
<PhysicalFacetAttribute> _
<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)> _
Public NotInheritable Class Statistic _
    Inherits ScriptNameObjectBase _
    Implements ICreatable, IDroppable, IMarkForDrop, IScriptable,  _
    ISfcSupportsDesignMode
'Utilizzo
Dim instance As Statistic

[PhysicalFacetAttribute]
[EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)]
public sealed class Statistic : ScriptNameObjectBase, 
    ICreatable, IDroppable, IMarkForDrop, IScriptable, ISfcSupportsDesignMode

[PhysicalFacetAttribute]
[EvaluationModeAttribute(AutomatedPolicyEvaluationMode::CheckOnSchedule)]
public ref class Statistic sealed : public ScriptNameObjectBase, 
    ICreatable, IDroppable, IMarkForDrop, IScriptable, ISfcSupportsDesignMode

[<SealedAttribute>]
[<PhysicalFacetAttribute>]
[<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)>]
type Statistic =  
    class 
        inherit ScriptNameObjectBase 
        interface ICreatable 
        interface IDroppable 
        interface IMarkForDrop 
        interface IScriptable 
        interface ISfcSupportsDesignMode 
    end

public final class Statistic extends ScriptNameObjectBase implements ICreatable, IDroppable, IMarkForDrop, IScriptable, ISfcSupportsDesignMode

Nel tipo Statistic sono esposti i membri seguenti.

Costruttori

	Nome	Descrizione
	Statistic()	Initializes a new instance of the Statistic class.
	Statistic(SqlSmoObject, String)	Initializes a new instance of the Statistic class on the specified parent object and with the specified name.

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Proprietà

	Nome	Descrizione
	Events	Gets the events that are associated with the database.
	FileGroup	Gets or sets the filegroup in which the statistic counter is stored.
	FilterDefinition	Gets or sets the statistic counters filter definition.
	HasFilter	Gets a value that indicates whether there is a filter associated with the statistic counter.
	ID	Gets the ID value that uniquely identifies the statistic counter.
	IsAutoCreated	Gets the Boolean property value that specifies whether the statistic counter is automatically created.
	IsFromIndexCreation	Gets the Boolean property value that specifies whether the statistic counter was generated from the creation of an index.
	IsTemporary	Gets the Boolean property value that specifies whether the Statistic counter is temporary or permanent.
	LastUpdated	Gets the date and time when the statistic counter was last updated.
	Name	Gets or sets a String value that specifies the name of the statistic counter. Esegue l'override di NamedSmoObject.Name.
	NoAutomaticRecomputation	Gets or sets the Boolean property value that specifies whether the statistics counter recomputed automatically.
	Parent	Gets or sets the SqlSmoObject object that is the parent of the Statistic object.
	Properties	Gets a collection of Property objects that represent the object properties. Ereditato da SqlSmoObject.
	State	Gets the state of the referenced object. Ereditato da SmoObjectBase.
	StatisticColumns	Represents a collection of StatisticColumn objects. Each StatisticColumn object represents a column defined on the statistic counter.
	Urn	Gets the Uniform Resource Name (URN) address value that uniquely identifies the object. Ereditato da SqlSmoObject.
	UserData	Gets or sets user-defined data associated with the referenced object. Ereditato da SmoObjectBase.

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Metodi

	Nome	Descrizione
	Create	Creates a statistics counter on the instance of SQL Server as defined by the Statistic object.
	Discover	Discovers a list of type Object. Ereditato da SqlSmoObject.
	Drop	Removes the statistic counter.
	Equals	Ereditato da Object.
	FormatSqlVariant	Formats an object as SqlVariant type. Ereditato da SqlSmoObject.
	GetContextDB	Gets the context database that is associated with this object. Ereditato da SqlSmoObject.
	GetDBName	Gets the database name that is associated with the object. Ereditato da SqlSmoObject.
	GetHashCode	Ereditato da Object.
	GetPropValue	Gets a property value of the SqlSmoObject object. Ereditato da SqlSmoObject.
	GetPropValueOptional	Gets a property value of the SqlSmoObject object. Ereditato da SqlSmoObject.
	GetPropValueOptionalAllowNull	Gets a property value of the SqlSmoObject object. Ereditato da SqlSmoObject.
	GetServerObject	Gets the server of the SqlSmoObject object. Ereditato da SqlSmoObject.
	GetType	Ereditato da Object.
	Initialize()	Initializes the object and forces the properties be loaded. Ereditato da SqlSmoObject.
	Initialize(Boolean)	Initializes the object and forces the properties be loaded. Ereditato da SqlSmoObject.
	IsObjectInitialized	Verifies whether the object has been initialized. Ereditato da SqlSmoObject.
	IsObjectInSpace	Verifies whether the object is isolated or connected to the instance of SQL Server. Ereditato da SqlSmoObject.
	MarkForDrop	Marks the statistics counter to be dropped next time its parent SqlSmoObject object is altered with the ALTER method.
	Refresh	Refreshes the script name. Ereditato da ScriptNameObjectBase.
	Script()	Generates a Transact-SQL script that can be used to re-create the database.
	Script(ScriptingOptions)	Generates a Transact-SQL script that can be used to re-create the database as specified by the script options.
	SetParentImpl	Sets the parent of the SqlSmoObject to the newParent parameter. Ereditato da SqlSmoObject.
	SetScanOptions	Sets the scan options for the statistic counter.
	ToString	Returns a String that represents the referenced object. Ereditato da SqlSmoObject.
	Update()	Updates the statistics for the referenced object.
	Update(StatisticsScanType)	Updates information about the distribution of key values.
	Update(StatisticsScanType, Int32)	Updates information about the distribution of key values.
	Update(StatisticsScanType, Int32, Boolean)	Updates information about the distribution of key values.
	Validate	Validates the state of an object. Ereditato da SmoObjectBase.

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Eventi

	Nome	Descrizione
	PropertyChanged	Represents the event that occurs when a property is changed. Ereditato da SqlSmoObject.
	PropertyMetadataChanged	Represents the event that occurs when property metadata changes. Ereditato da SqlSmoObject.

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Implementazioni esplicite dell'interfaccia

	Nome	Descrizione
	IAlienObject.Discover	Discovers any dependencies. Non fare riferimento direttamente a questo membro nel codice. Supporta l'infrastruttura di SQL Server. Ereditato da SqlSmoObject.
	IAlienObject.GetDomainRoot	Returns the root of the domain. Ereditato da SqlSmoObject.
	IAlienObject.GetParent	Gets the parent of this object. Non fare riferimento direttamente a questo membro nel codice. Supporta l'infrastruttura di SQL Server. Ereditato da SqlSmoObject.
	IAlienObject.GetPropertyType	Gets the type of the specified property. Ereditato da SqlSmoObject.
	IAlienObject.GetPropertyValue	Gets the value of the specified property. Ereditato da SqlSmoObject.
	IAlienObject.GetUrn	Gets the Unified Resource Name (URN) of the object. Non fare riferimento direttamente a questo membro nel codice. Supporta l'infrastruttura di SQL Server. Ereditato da SqlSmoObject.
	IAlienObject.Resolve	Gets the instance that contains the information about the object from the Unified Resource Name (URN) of the object. Ereditato da SqlSmoObject.
	IAlienObject.SetObjectState	Sets the object state to the specified SfcObjectState value. Ereditato da SqlSmoObject.
	IAlienObject.SetPropertyValue	Sets the property value. Ereditato da SqlSmoObject.
	ISfcPropertyProvider.GetPropertySet	Gets the interface reference to the set of properties of this object. Ereditato da SqlSmoObject.
	ISfcSupportsDesignMode.IsDesignMode	Gets a value that indicates whether the statistic counter is in design mode.

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Osservazioni

To get Statistic object properties, users can be a member of the public fixed server role.

To set Statistic object properties, users must have ALTER permission on the parent table or view or be a member of the db_owner fixed database role.

To create or drop a statistics counter, users must have ALTER permission on the parent table or view or be a member of the db_owner fixed database role.

To update statistics, users must have ALTER permission on the parent table or view or be a member of the db_owner fixed database role.

Thread Safety

Tutti i membri statici pubblici (Shared in Microsoft Visual Basic) di questo tipo sono sicuri per le operazioni a thread multipli. Non è invece garantita la sicurezza dei membri dell'istanza.

Esempi

Creazione e aggiornamento delle statistiche

Protezione dei thread

I membri static (Shared in Visual Basic) pubblici di questo tipo sono affidabili. Non è invece garantita la sicurezza dei membri dell'istanza.

Vedere anche

Riferimento

Spazio dei nomi Microsoft.SqlServer.Management.Smo

Altre risorse

Creazione e aggiornamento delle statistiche

CREATE STATISTICS (Transact-SQL)