Query To Delete Millions Of Records

Jul 23, 2012

i have a query to delete millions of records. I whant to delete in batches of a 1000. My Select join statement will return millions of records so this takes alot of time how to i select a 1000 records delete everything that his not in those record and loop and not select the same records again.Here is what i have :

DECLARE @i INT
WHILE (1=1)
BEGIN
BEGIN TRAN
DELETE TOP(1000) FROM dbo.ABC123
WHERE SUBSTRING(dumbdumb,1,8) NOT IN

[code]....

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Millions Records Archiving And Delete

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The iussue:Sql 2KI have to keep in the database the data from the last 3 months.Every day I have to load 2 millions records in the database.So every day I have to export (in an other database as historical datacontainer) and delete the 2 millions records inserted 3 month + one day ago.The main problem is that delete operation take a while...involvingtransaction log.The question are:1) How can I improve this operation (export/delete)2) If we decide to migrate to SQL 2005, may we use some feature, as"partitioning" to resolve the problems ? In oracle I can use the "truncatepartition" statement, but in sql 2005, I'm reading, it cant be done.This becouse we can think to create a partition on the last three mounts tosplit data. The partitioning function can be dinamic or containing afunction that says "last 3 months ?" I dont think so.May you help usthank youMastino

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Hi

Please guide me for the below given problem.


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A001 10 10 +
A001 10 20 -
A001 40 40 +
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A003 10 30 +
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same thing is happening while fetching records from that table.

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find ddl below:

GO
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Hi Teachies,



I am using SQL Server Standard Edition with good HardWare configuration.

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same thing is happening while fetching records from that table.

this database contains only single file group i.e primary

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it doesnot have any Triggers.

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Paritioning of table cannot be use in SQL Server Standard Edition.

Or Dropping all non clustered index before insert operation will improve my performance.

Please find the details ..

SERVER CONFIGURATION:

Intel pentium (R) 4 CPU
2.88 GHZ,
2.79 GHZ ,2 GB RAM

Operating System: WINDOWS 2003 R2 STANDARD SERVICE PACK 2



Microsoft SQL Server 2005 - 9.00.1399.06 (Intel X86)

Oct 14 2005 00:33:37

Copyright (c) 1988-2005 Microsoft Corporation

Standard Edition on Windows NT 5.2 (Build 3790: Service Pack 2)





DAtABASE DETAILS:


MDF and LDF located on C: Drive

Available Space on C: DRIVE 2.94 GB




TABLES DETAILS

CREATE TABLE [dbo].[TIX_PAYMENT_SCHEDULE](

[PaymentScheduleId] [bigint] IDENTITY(1,1) NOT NULL,

[OwedAmountId] [int] NULL, --NonClusteredIndex

[ProposalId] [int] NOT NULL, --NonClusteredIndex

[BrandId] [int] NULL, -- NonClusteredIndex

[DueDate] [datetime] NULL, --NonClusteredIndex

[OverdueDate] [datetime] NULL,--NonClusteredIndex

[ExpectedAmount] [decimal](18, 2) NULL,

[TransactionStatusId] [tinyint] NULL,--NonClusteredIndex

[IsLate] [char](1) NULL,

[IsPaymentReceived] [char](1) NULL,

[ScheduleBatchJournalId] [bigint] NULL,--NonClusteredIndex

[IsValidSchedule] [char](1) NULL,

[RuleId] [int] NULL,

[ActionId] [int] NOT NULL,

[ReasonId] [tinyint] NULL,

[Comments] [nvarchar](2000) NULL,

[NoofDays] [int] NULL,

[ActualAmountReceived] [decimal](18, 2) NULL,

[CreatedBy] [uniqueidentifier] NULL,

[CreatedDateTime] [datetime] NOT NULL,

[LastUpdatedBy] [uniqueidentifier] NULL,

[LastUpdatedDateTime] [datetime] NOT NULL,

[CaseScheduleId] [bigint] NULL,--NonClusteredIndex

[ActionDate] [datetime] NULL,

[HasExactMatch] [char](1) NULL,

[IsCatchupBalanced] [char](1) NULL,

[HasModified] [char](1) NULL,--NonClusteredIndex

[PendDate] [datetime] NULL,

[IsAutoAccept] [char](1) NULL,

[CatchupBalanceIdentifier] [uniqueidentifier] NULL,--NonClusteredIndex

CONSTRAINT [PK_TIX_PAYMENT_SCHEDULE] PRIMARY KEY CLUSTERED

(

[PaymentScheduleId] ASC

)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]

) ON [PRIMARY]



TABLE 2



CREATE TABLE [dbo].[TIX_PAYMENT_CASE_SCHEDULE](

[CaseScheduleId] [bigint] IDENTITY(1,1) NOT NULL,

[ProposalId] [int] NOT NULL,--NonClusteredIndex

[DueDate] [datetime] NOT NULL,

[OverDueDate] [datetime] NOT NULL,

[TotalExpectedAmount] [decimal](18, 2) NOT NULL,

[TotalActualPaymentReceived] [decimal](18, 2) NOT NULL,

[TransactionStatusId] [int] NOT NULL,--NonClusteredIndex

[ActionId] [int] NULL,

[CreatedBy] [uniqueidentifier] NULL,

[CreatedDateTime] [datetime] NULL,

[LastUpdatedBy] [uniqueidentifier] NULL,

[LastUpdatedDateTime] [datetime] NULL,

[IsValidSchedule] [char](1) NULL,

[ScheduleBatchJournalId] [bigint] NULL,

[IsCatchupBalanced] [char](1) NULL,

[HasModified] [char](1) NULL,--NonClusteredIndex

[CatchupBalanceIdentifier] [uniqueidentifier] NULL,

CONSTRAINT [PK_TIX_PAYMENT_CASE_SCHEDULE] PRIMARY KEY CLUSTERED

(

[CaseScheduleId] ASC

)WITH (PAD_INDEX = ON, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]

) ON [PRIMARY]

GO



STORED PROCEDURE:





CREATE PROC [dbo].[TIX_PRC_GENERATE_PAYMENTSCHEDULE_DATA]
(
@XMLParams XML,
@ToDate datetime,
@HasModified char(1)

)
AS
BEGIN
SET NOCOUNT ON
--Exception Handling Variable Declaration
DECLARE @ErrorMessage NVARCHAR(200),
@ErrorNumber INT,
@ErrorSeverity INT,
@ErrorState INT,
@ErrorProcedure NVARCHAR(50),
@ErrorLine INT,
@ErrorDesc NVARCHAR(100)

DECLARE @XMLPayment INT
BEGIN TRY
IF @XMLParams IS NOT NULL
BEGIN --BEGIN IF


SET @ErrorDesc='Error Occured While Inserting into TIX_PAYMENT_SCHEDULE FROM XML'

INSERT INTO TIX_PAYMENT_SCHEDULE
(
OwedAmountId,
ProposalId,
BrandId,
DueDate,
OverdueDate ,
CreatedDateTime,
LastUpdatedDateTime,
ExpectedAmount,
ActualAmountReceived,
ScheduleBatchJournalId,
RuleId,
TransactionStatusId,
ActionId,
IsLate,
IsPaymentReceived ,
IsValidSchedule,
--Added by DC : 119
IsCatchupBalanced,
CatchupBalanceIdentifier,
HasModified
---------------------------------------------------
)
SELECT
Main.ELEMENT.value('(OwedAmountId)[1]','int') AS OwedAmountId,
Main.ELEMENT.value('(ProposalId)[1]','int') AS ProposalId,
Main.ELEMENT.value('(BrandId)[1]','int') AS BrandId,
convert(datetime,Main.ELEMENT.value('(DueDate)[1]','varchar(100)')) AS DueDate,
convert(datetime,Main.ELEMENT.value('(OverdueDate)[1]','varchar(100)')) AS OverdueDate,
@ToDate AS CreatedDateTime,
@ToDate AS LastUpdatedDateTime,
convert(decimal(18,2),Main.ELEMENT.value('(ExpectedAmount)[1]','varchar(100)')) AS ExpectedAmount,
convert(decimal(18,2),Main.ELEMENT.value('(ActualAmountReceived)[1]','varchar(100)')) AS ActualAmountReceived,
Main.ELEMENT.value('(ScheduleBatchJournalId)[1]','bigint') AS ScheduleBatchJournalId,
Main.ELEMENT.value('(RuleId)[1]','int') AS RuleId,
Main.ELEMENT.value('(TransactionStatusId)[1]','int') AS TransactionStatusId,
Main.ELEMENT.value('(ActionId)[1]','int') AS ActionId,
Main.ELEMENT.value('(IsLate)[1]','char(1)') AS IsLate,
Main.ELEMENT.value('(IsPaymentReceived)[1]','char(1)') AS IsPaymentReceived,
Main.ELEMENT.value('(IsValidSchedule)[1]','char(1)') AS IsValidSchedule

--Added by DC for 119

,Main.ELEMENT.value('(IsCatchupBalanced)[1]','char(1)') AS IsCatchupBalanced
,Main.ELEMENT.value('(CatchupBalanceIdentifier)[1]','nvarchar(1000)') AS CatchupBalanceIdentifier
,@HasModified
---------------------------------------------------------------------

FROM @XMLParams.nodes ('(/ROOT/DATA)') AS Main(ELEMENT)

END--END IF


END TRY--Main END TRY
BEGIN CATCH --Main BEGIN CATCH



SELECT @ErrorMessage = @ErrorDesc+Char(13)+Error_Message(),
@ErrorSeverity = Error_Severity(),
@ErrorState = Error_State(),
@ErrorNumber = Error_Number(),
@ErrorProcedure = Error_Procedure(),
@ErrorLine = Error_Line()
RAISERROR(
@ErrorMessage,
@ErrorSeverity,
@ErrorState,
@ErrorNumber,
@ErrorProcedure,
@ErrorLine
)
END CATCH --Main END CATCH
END --Main END





STOREDPROCEDURE 2



CREATE PROCEDURE [dbo].[TIX_PRC_GET_PAYMENTSCHEDULE_SCHEDULE_FOR_DATE_RANGE]
(

@ToDate datetime,
@IsValidSchedule char(1)

)
AS
BEGIN
SET NOCOUNT ON

--Execption Handling Variable Declaration
DECLARE @ErrorMessage NVARCHAR(200),
@ErrorNumber INT,
@ErrorSeverity INT,
@ErrorState INT,
@ErrorProcedure NVARCHAR(50),
@ErrorLine INT,
@ErrorDesc NVARCHAR(100)


BEGIN TRY --Exception Handling
SET @ErrorDesc='Error Occured while fetching records from TIX_PAYMENT_SCHEDULE'


SELECT
PaymentScheduleId,
OwedAmountId,
ProposalId,
DueDate,
OverdueDate,
ExpectedAmount,
TransactionStatusId,
IsPaymentReceived,
IsLate,
ActionId,
ActualAmountReceived,
IsValidSchedule,
BrandId,
CaseScheduleId,
ReasonId,
Comments,
NoOfDays,
ActionDate,
IsCatchupBalanced,
CatchupBalanceIdentifier,
HasModified
from TIX_PAYMENT_SCHEDULE with (nolock)
WHERE DUEDATE <=@ToDate AND IsValidSchedule=@IsValidSchedule


SELECT DISTINCT OwedAmountId,proposalId,brandId from TIX_PAYMENT_SCHEDULE with (nolock) WHERE DUEDATE <=@ToDate AND IsValidSchedule=@IsValidSchedule Order By OwedAmountId,ProposalId,BrandId asc
SELECT DISTINCT ProposalId from TIX_PAYMENT_SCHEDULE with (nolock) WHERE DUEDATE <=@ToDate AND IsValidSchedule=@IsValidSchedule Order By ProposalId asc


END TRY
BEGIN CATCH
SELECT @ErrorMessage=@ErrorDesc+CHAR(13)+ Error_Message(),
@ErrorNumber=Error_Number(),
@ErrorState=Error_State(),
@ErrorProcedure=Error_Procedure(),
@ErrorLine=Error_Line(),
@ErrorSeverity=Error_Severity()

RAISERROR(
@ErrorMessage,
@ErrorSeverity,
@ErrorState,
@ErrorNumber,
@ErrorProcedure,
@ErrorLine
)

END CATCH

END





Thanks & Regards

Rajesh Varma

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Hi Teachies,


I am using SQL Server Standard Edition with good HardWare configuration.

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same thing is happening while fetching records from that table.

this database contains only single file group i.e primary

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Delete All Records From A Database

Aug 30, 2007

Is there a way to delete all records in a SQL Server 2005 database? A function or a script?

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How Do I Delete One Of A Pair Of Records.

Sep 8, 2007

I have a table, gdbdoc,  that contains record-key pairs, linking records in another table.   There is no significance in the order of the link: if records A and B are linked, then I don't care whether the link is A -> B or B -> A, and my normal query logic is     SELECT ... Where DCIindiid = A ...     union     SELECT ... Where DCILinkid = A(DCIindiid = key1, DCILinkid = Key2)
The link-creation process normally checks whether there is already a link in either direction.  Thus before creating a link A->B the logic checks to see whether either the A->B or B->A link record exists, and a new link is not created if the link already exists in either direction.  However recently one of my processes bypassed the reverse-link check, and I've ended up with a few hundred cases where there is both an A->B link and a B->A link. 
If I run a query: -      select gd1.* from gdbdoc as gd1 join gdbdoc as gd2 on gd1.dciindiid = gd2.dcilinkid and gd1.dcilinkid = gd2.dciindiid
this displays all the records where one record links A -> B and there is also another record that links B -> A. 
How do I write a query to delete ONE of the pair of duplicate records?  I have two problems: -
Problem 1:  Table gdbdoc is keyed on (DCIindiid, DCILinkid).  Both guids are needed to create a unique key, and the table does not have a single key field.  You can't write    DELETE gdbdoc where DCIIndiid, DCILinkid IN select gd1.dciindiid, gd1.linkid                             from gdbdoc as gd1 join gdbdoc as gd2 on gd1.dciindiid = gd2.dcilinkid and gd1.dcilinkid = gd2.dciindiid
as the DELETE ... SELECT ... syntax only seems to support a single returned value.  
Problem 2.  If we solved problem 1, we would (I think) delete BOTH the A->B link and the B->A link , whereas I only want to delete one of these links.
Afterthought:  Problem 2 seems easily solvable:  add "Where gd1.DCIindiid < gd1.DCILinkid" to the DELETE ... statement.  Although the concept of "<" doesn't really mean anything with a guid, this is accepted by SQL, and halves the number of records returned by the select.  Obviously I don't care which of the two links (A->B or B->A) is deleted.
Regards, Robert Barnes

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Delete Duplicate Records

Jul 30, 2004

I use a tabel for storin log data from a mail server. I noticed that I'm getting duplicate records, is there a way to delete the socond and/or third entry so I dont have any duplicates?

I need this done in SP.

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