Discussion :

[hunter_X]

Bsr à tous..
J'aimerais avoir votre avis d'expert sur ce sujet.
J'ai une table de base de données sql server 2008 R2 mise à jour chaque jour avec 1 000 000 d'enregistrements. Et je comptais créer une vue indexée filtrant certaines colonnes de la table.
Ma question est la suivante, en exploitant cette table pendant 6mois à quels problèmes puis-je être confrontés.
Merçi

[mikedavem]

Bonjour,

Il faudrait en premier lieu avoir la ddl de votre table concernes par la vue, les index associes et la ddl de votre vue.

++

[iberserk]

Dans les grandes lignes imaginez que votre vue indexée réagira comme si c'était une table comme une autres.

Les gains les plus interessant pour les vues indexées sont les requêtes faisant intervenir des agregats qui peuvent limiter de manière drastique les IO.

En revanche vos insertion/maj sur la table son pénalisés du fait de la nécessité de maintenir la vue indexée à jour...

Voyez ceci:
http://sqlpro.developpez.com/optimisation/indexation/

[Ptit_Dje]

Lorsque vous dites 6 mois, est ce la durée de rétention des données dans votre table ?
A priori 6 mois de données à 1M de row par jour vous fera environ 180M de lignes.
Selon la taille d'une ligne (il faut la DDL pour le dire) le volume de votre table risque vite de grossir.
Par soucis de maintenabilité et de performances, demandez vous si cette table n'est pas une bonne candidate au partitionning.
Prévoyez de l'espace disque en conséquence aussi.

[iberserk]

demandez vous si cette table n'est pas une bonne candidate au partitionning

Et si votre edition d'SQL SERVER vous le permet bien!

[hunter_X]

Merci à tous pour vos apports..

Voiçi la structure d'une des tables :

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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CREATE TABLE [dbo].[MOC](
	[id] [int] IDENTITY(1,1) NOT NULL,
	[recordno] [nvarchar](max) NULL,
	[recordType] [nvarchar](20) NULL,
	[servedIMSI] [nvarchar](20) NULL,
	[servedIMEI] [nvarchar](20) NULL,
	[servedMSISDN] [nvarchar](30) NULL,
	[callingNumber] [nvarchar](40) NOT NULL,
	[calledNumber] [nvarchar](40) NOT NULL,
	[recordingEntity] [nvarchar](30) NULL,
	[mscIncomingROUTE] [nvarchar](25) NULL,
	[mscOutgoingROUTE] [nvarchar](25) NULL,
	[location] [nvarchar](25) NULL,
	[basicService] [nvarchar](30) NULL,
	[msClassmark] [nvarchar](15) NULL,
	[answerTime] [nvarchar](15) NOT NULL,
	[releaseTime] [nvarchar](15) NULL,
	[callDuration] [nvarchar](15) NULL,
	[radioChanRequested] [nvarchar](35) NULL,
	[radioChanUsed] [nvarchar](35) NULL,
	[causeForTerm] [nvarchar](40) NULL,
	[diagnostics] [nvarchar](40) NULL,
	[callReference] [nvarchar](30) NULL,
	[additionalChgInfo] [nvarchar](40) NULL,
	[gsm_SCFAddress] [nvarchar](35) NULL,
	[serviceKey] [nvarchar](5) NULL,
	[networkcallReference] [nvarchar](25) NULL,
	[mSCAddress] [nvarchar](30) NULL,
	[speechVersionSupported] [nvarchar](5) NULL,
	[speechVersionUsed] [nvarchar](5) NULL,
	[numberOfDPEncountered] [nvarchar](5) NULL,
	[levelOfCAMELService] [nvarchar](30) NULL,
	[freeFormatData] [nvarchar](20) NULL,
	[systemType] [nvarchar](10) NULL,
	[classmark3] [nvarchar](10) NULL,
	[chargedParty] [nvarchar](15) NULL,
	[mscOutgoingCircuit] [nvarchar](10) NULL,
	[orgRNCorBSCId] [nvarchar](10) NULL,
	[globalAreaID] [nvarchar](30) NULL,
	[subscriberCategory] [nvarchar](25) NULL,
	[firstmccmnc] [nvarchar](15) NULL,
	[lastmccmnc] [nvarchar](15) NULL,
	[translatedNumber] [nvarchar](30) NULL,
	[serviceCentre] [nvarchar](30) NULL,
	[deliveryTime] [nvarchar](15) NULL,
	[smsUserDataType] [nvarchar](5) NULL,
	[originationnumber] [nvarchar](30) NULL,
	[messageReference] [nvarchar](5) NULL,
	[originationTime] [nvarchar](15) NULL,
	[destinationNumber] [nvarchar](30) NULL,
	[supplServicesUsed] [nvarchar](100) NULL,
	[roamingNumber] [nvarchar](30) NULL,
	[calledIMSI] [nvarchar](20) NULL,
	[sequenceNumber] [nvarchar](5) NULL,
	[mscIncomingCircuit] [nvarchar](10) NULL,
	[maximumNumberOfSMSInTheConcatenatedSMS] [nvarchar](5) NULL,
	[concatenatedSMSReferenceNumber] [nvarchar](5) NULL,
	[sequenceNumberOfTheCurrentSMS] [nvarchar](5) NULL,
	[partialRecordType] [nvarchar](30) NULL,
	[connectedNumber] [nvarchar](30) NULL,
	[originalCalledNumber] [nvarchar](30) NULL,
	[routingNumber] [nvarchar](30) NULL,
	[interrogationTime] [nvarchar](15) NULL,
	[mscIncomingRouteAttribute] [nvarchar](10) NULL,
	[mscOutgoingRouteAttribute] [nvarchar](10) NULL,
	[transparencyIndicator] [nvarchar](20) NULL,
	[fnur] [nvarchar](30) NULL,
	[modemType] [nvarchar](30) NULL,
	[redirectingnumber] [nvarchar](30) NULL,
	[redirectingcounter] [nvarchar](15) NULL,
	[IncomingROUTE] [nvarchar](25) NULL,
	[OutgoingROUTE] [nvarchar](25) NULL,
	[ChangeofLocation] [nvarchar](25) NULL,
	[ChangeOfService] [nvarchar](30) NULL,
	[SupplementaryServices] [nvarchar](30) NULL,
	[AOCParameters] [nvarchar](30) NULL,
	[ChangeofAOCPara] [nvarchar](30) NULL,
	[ChangeofClassmark] [nvarchar](10) NULL,
	[Eventtimestamps] [nvarchar](15) NULL,
	[ChangeofRadioChan] [nvarchar](35) NULL,
	[Causefortermination] [nvarchar](40) NULL,
	[Sequenceno] [nvarchar](5) NULL,
	[Recordextensions] [nvarchar](30) NULL,
	[gsmSCFaddress] [nvarchar](30) NULL,
	[CAMELinitiatedCFindicator] [nvarchar](25) NULL,
	[Defaultcallhandling] [nvarchar](15) NULL,
	[FixedNetworkUserRate] [nvarchar](25) NULL,
	[AirInterfaceUserRateRequested] [nvarchar](30) NULL,
	[CAMELcallleginformation] [nvarchar](40) NULL,
	[Freeformatdataappendindicator] [nvarchar](20) NULL,
	[Defaultcallhandling2] [nvarchar](15) NULL,
	[GsmSCFaddress2] [nvarchar](30) NULL,
	[Servicekey2] [nvarchar](5) NULL,
	[FreeformatData2] [nvarchar](5) NULL,
	[Freeformatdataappendindicator2] [nvarchar](20) NULL,
	[RateIndication] [nvarchar](40) NULL,
	[Guaranteedbitrate] [nvarchar](30) NULL,
	[Maximumbitrate] [nvarchar](30) NULL,
	[CallingChargeAreaCode] [nvarchar](30) NULL,
	[CalledChargeAreaCode] [nvarchar](30) NULL,
	[RNCorBSCId] [nvarchar](10) NULL,
	[MSCIdorSPC] [nvarchar](10) NULL,
	[CallEmlppPriority] [nvarchar](30) NULL,
	[CallerDefaultEmlppPriority] [nvarchar](30) NULL,
	[EaSubscriberInfo] [nvarchar](5) NULL,
	[SelectedCIC] [nvarchar](5) NULL,
	[optimalRoutingFlag] [nvarchar](30) NULL,
	[optimalRoutingLateForwardFlag] [nvarchar](30) NULL,
	[optimalRoutingEarlyForwardFlag] [nvarchar](30) NULL,
	[Portedflag] [nvarchar](20) NULL,
	[ChangeOfGlobalAreaID] [nvarchar](15) NULL,
	[IntermediateMCCMNC] [nvarchar](30) NULL,
	[CUGOutgoingAccessIndicator] [nvarchar](15) NULL,
	[CUGInterlockCode] [nvarchar](5) NULL,
	[CUGOutgoingAccessUsed] [nvarchar](30) NULL,
	[CUGIndex] [nvarchar](30) NULL,
	[InteractionWithIP] [nvarchar](30) NULL,
	[Hotbillingtag] [nvarchar](15) NULL,
	[VoiceIndicator] [nvarchar](25) NULL,
	[BCategory] [nvarchar](30) NULL,
	[callType] [nvarchar](15) NULL,
	[ChangeofAOCParms] [nvarchar](30) NULL,
	[ChangeofRadChan] [nvarchar](35) NULL,
	[InitialCallAttemptFlag] [nvarchar](30) NULL,
	[USSDCallbackFlag] [nvarchar](30) NULL,
	[Calledpartynumber] [nvarchar](30) NULL,
	[ISDNBearerCapability] [nvarchar](30) NULL,
	[LowLayerCompatibility] [nvarchar](30) NULL,
	[HighLayerCompatibility] [nvarchar](30) NULL,
	[BasicServiceCode] [nvarchar](30) NULL,
	[CUGIncomingAccessUsed] [nvarchar](30) NULL,
	[SMSResult] [nvarchar](10) NULL,
	[CAMELSMSInformation] [nvarchar](30) NULL,
	[SMSText] [nvarchar](200) NULL,
	[LCSClientType] [nvarchar](30) NULL,
	[LCSClientIdentity] [nvarchar](30) NULL,
	[LCSQoS] [nvarchar](30) NULL,
	[LCSPriority] [nvarchar](15) NULL,
	[MLCNumber] [nvarchar](30) NULL,
	[MeasureDuration] [nvarchar](15) NULL,
	[NotificationToMSUser] [nvarchar](60) NULL,
	[PrivacyOverride] [nvarchar](30) NULL,
	[LocationEstimate] [nvarchar](30) NULL,
	[PositioningData] [nvarchar](40) NULL,
	[LCSCause] [nvarchar](30) NULL,
	[MOLRType] [nvarchar](20) NULL,
	[lcsReferenceNumber] [nvarchar](30) NULL,
	[EMSDigits] [nvarchar](30) NULL,
	[EMSKey] [nvarchar](20) NULL,
	[SSAction] [nvarchar](20) NULL,
	[SSActiontimestamp] [nvarchar](15) NULL,
	[SSParameters] [nvarchar](30) NULL,
	[SSActionResult] [nvarchar](30) NULL,
	[USSDCodingScheme] [nvarchar](30) NULL,
	[USSDString] [nvarchar](30) NULL,
	[USSDNotifyCounter] [nvarchar](15) NULL,
	[USSDRequestCounter] [nvarchar](15) NULL,
	[Interrogationtimestamp] [nvarchar](15) NULL,
	[NumberofForwarding] [nvarchar](30) NULL,
	[interrogationResult] [nvarchar](10) NULL,
	[Equipmenttype] [nvarchar](20) NULL,
	[EquipmentId] [nvarchar](15) NULL,
	[CAMELDestinationNumber] [nvarchar](30) NULL,
	[MSCserverindication] [nvarchar](30) NULL,
	[IMEICheckEvent] [nvarchar](20) NULL,
	[EventTimeStamp] [nvarchar](15) NULL,
	[IMEIStatus] [nvarchar](30) NULL,
	[supplService] [nvarchar](30) NULL,
	[ssActionTime] [nvarchar](15) NULL,
	[basicServices] [nvarchar](30) NULL,
	[seizureTime] [nvarchar](15) NULL,
	[setupTime] [nvarchar](15) NULL,
	[alertingTime] [nvarchar](15) NULL,
	[destinationRoutingAddress] [nvarchar](30) NULL,
	[aiurRequested] [nvarchar](25) NULL,
	[DestinationCode] [int] NULL,
 CONSTRAINT [PK_MOC_1] PRIMARY KEY CLUSTERED 
(
	[callingNumber] ASC,
	[calledNumber] ASC,
	[answerTime] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
 
/**********************************************************
Voiçi les index de la table :
**********************************************************/
CREATE NONCLUSTERED INDEX [IX_FK_MOCDestination] ON [dbo].[MOC] 
(
	[DestinationCode] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
GO
 
 
CREATE NONCLUSTERED INDEX [IX_MOC_CallDuration] ON [dbo].[MOC] 
(
	[callDuration] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
GO
 
 
CREATE NONCLUSTERED INDEX [IX_MOC_Location] ON [dbo].[MOC] 
(
	[location] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
GO
 
 
CREATE NONCLUSTERED INDEX [IX_MOC_mscIncomingRoute] ON [dbo].[MOC] 
(
	[mscIncomingROUTE] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
GO
 
 
CREATE NONCLUSTERED INDEX [IX_MOC_mscOutgoingRoute] ON [dbo].[MOC] 
(
	[mscOutgoingROUTE] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
GO
 
 
CREATE NONCLUSTERED INDEX [IX_MOC_RecordParRoute] ON [dbo].[MOC] 
(
	[recordType] ASC,
	[mscOutgoingROUTE] ASC,
	[answerTime] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
GO
 
 
/**********************************************************
Voiçi la structure d'une vue indexée:
**********************************************************/
Create View [dbo].[Glo] WITH SCHEMABINDING AS
			select callingnumber, callednumber, answertime, callduration
			from dbo.MOC
			where recordType = 'moCallRecord'
			and answerTime like '1103%'
			and mscOutgoingROUTE = 'Glo';
GO
 
-- et l'index associé :
CREATE UNIQUE CLUSTERED INDEX [i_abc] ON [dbo].[Glo_Benin] 
(
	[callingnumber] ASC,
	[callednumber] ASC,
	[answertime] ASC,
	[callduration] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
GO

Qu'en pensez-vous ?