SQL 2005 - Partitioning Tables
Oct 29, 2005I want to know how to partition a table using two columns (Example: Salesman, OrderDate).
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Partitioning Tables
May 4, 2007How to partition tables in dynamic way?
I want to partion a table based on the client specific id and I want these values (client id's) to be passed dynamically to the create partition function.
I am not familiar with partitioning so it will be great if someone guides me (I am also reading some articles on partitioning, but it will be easier with some help)
The table I am trying to partition has like 80 million rows with four client's data as of now and will be more once we implement new clients.
I also think Partition will help, because before we load a client's data, we remove the data that is already out there (we flush previous qtr data before we insert this qtr data)
Any help will be appreciated.
Thanks
Raj
Partitioning Tables Vs San Hardware
Feb 26, 2008Guys,
I am trying to use table partition feature from Sql Server 2005 enterprise edition.
I have Names table with columns FNAME, LNAME and DISPLAYNAME (concatenation of FNAME and LNAME) which I partitioned across 2 drives and 4 file groups based on the below criteria.
CREATE PARTITION FUNCTION pfNameRange(varchar(200))
AS RANGE RIGHT FOR VALUES ('F', 'I', 'S');
Currently there are 5 mill rows in this partitioned tables - partitioned table has clustered index on ID (identity property) and LNAME.
I also created another table with the same data without partition on the table.
When I run the following query I get the same response time of 10secs from both tables.
Names - partitoned table with clustered index on ID and Lname
NameSEARCH - with no partition and no index
select * from names where lname = 'smith'
select * from namesearch where lname = 'smith'
Is it safe to assume that if the data files are on San it doesnt give any advantage of table paritioning?
How can paritioning be made effective with data files on San
Any suggestions and inputs would help.
Thanks
Historical Tables, Partitioning Or What?
Apr 4, 2007I have about 45000 records in a CSV file, which I am using as HTTP request parameters to query a website and store some results in a database. This is the kind of application which runs 24/7, so database grows really quickly. Every insert fires up a trigger, which has to look for some old records based on some criteria and modify the last inserted record. My client is crazy about performance on this one and suggested to move the old records into another table, which has exactly the same structure, but would serve as a historical table only (used to generate reports, statistics, etc.), whilst the original table would store only the latest rows (so no more than 45k at a given time, whereas the historical table may grow to millions of records). Is this a good idea? Having the performance in mind and the fact that there's that trigger - it has to run as quickly as possible - I might second that idea. Is it good or bad? What do you think?
I read a similar post here, which mentioned SQL Server 2005 partitioning, I might as well try this, although I never used it before.
Tables Partitioning -- Performance Boost
Nov 13, 2007Hi
I have a question about the partitioning a table.
I have a database with more 50 tables and 25 tables are having more than 10 lakhs records which includes history records.I have two data files for this database under PRIMARY FILE GROUP.Now i want to transfer these history records to some other database.
I wanted to know if this kind of activity will boost the database performance?.If yes how should i configure my new database.
On what factors of partitioning my performance will boost.
Thanks in advance
Regards
Arvind
Partitioning Tables And Filegroup Stuff
Jan 17, 2007Hi everyone,
Primary platform is 64-bit on A-P cluster.
Our needs are on yearly basis and on monthly basis. We're forced to keep up five years for the majority of the production tables.
In terms of years, I see three ways:
1.Create all the ranges for a FILEGROUP with a only NDF
2004, 2005, 2006 => FG1 => ONE.NDF
2.Create all the ranges for a FILEGROUP along with more than one NDF.
2004, 2005, 2006 => FG1 => ONE.NDF
TWO.NDF
3.Create each range to a FILEGROUP where there will be one NDF or (n) NDF
2004 => FG0=> ZERO.NDF
2006 => FG1 => ONE.NDF
2005 => FG2 => TWO.NDF
What is the best approach in terms of availability, performance and best practices? Maybe is a silly question, I'm sorry if it is.
As usual, thanks a lot for your time.
SQL Server Admin 2014 :: Partitioning Master And 4 Child Tables
Jul 5, 2014I have 6 tables which are very huge in row count and need to be partitioned for better manageability.
Little info: Every day, 300 Million records are inserted and 300 million records are deleted in below 7 tables. we maintain only 8 days worth of data in below tables which is the reason records which are older than 8 days are continuously deleted.
Master table which has [ID],[Timestamp]
Table Name: Sample - 2,578,106
Child tables: Foreign key [ID] is common for all the tables. There is no timestamp column in child table.
dbo.ConnectionDB - 1,147,578,048
dbo.ConnectionSS - 876,458,321
dbo.ConnectionRT - 118,133,857
dbo.ConnectionSample - 100,038,535
dbo.Command - 100,032,235
I would like to partition the above child tables based on the IDs that are inserted every 4 hours. Meaning, All IDs that are inserted in 4 hours window should be in a partition.
SQL Server 2008 :: Retrofitting Partitioning To Existing (large) Tables
Feb 9, 2015We have an existing BI/DW process that adds large chunks of data daily (~10M rows) to an existing table, as well as using Deletes to remove stale data. This scenario seems to beg for partitioning to support switching in/out data.
After lots of reading on this, I have figured out the mechanics of the switching, bit I still have some unknowns about the indexes needed to support this.
The table currently has several non-clustered indexes, including one on the partitioning column - let's call that column snapshotdate. Fortunately there are no FKs involved, and no constraints.
Most of the partitioning material I see focuses on creating a clustered PK to assist with switching. Not sure if this is actually necessary, but assume I create one using an Identity column (currently missing) plus snapshotdate.
For the other non-clustered, non-unique indexes, can I just add the snapshotdate to the end of the index? i.e. will that satisfy the switching requirement?
SQL 2005 Automatically Partitioning?
Mar 26, 2007Once I've added Files for a database across mulitple SAN drives willSQL 2005 automatically partition data across the Files automatically?Will it atleast grow across files automatically? Or do I have to doScheme Functions, Partitions, and assign the Scheme Partition to eachtable in the database?ThanksErik
View 1 Replies View RelatedSql Server 2005 Partitioning Problem
Jul 19, 2006i'm using sql server 2005 partitioning feature, when i update a record in 100 record partition it takes the same time as 1000000 records partition why, could any one help
View 1 Replies View RelatedGeneral Partitioning In SQL Server 2005
Jan 8, 2007Ananth writes "A new feature is established in SQL Server 2005. That is Partitioned Table. I went through several articles in net regarding partioned table. But I did not get any generalized version of Partitioning.
For example I partitioned a table into 4 Filegroups based on Transaction Date. So I used range function to give ranges for 4 quarters of one year. It works fine. But I would like to generalize this scenario. It will work for one year. If new year comes ,I have to write new script and execute the same.
The Partitioned function should work for 12 months in a given year. So here year is the paramter and then that function should be construct based on the year automatically.
Can anybody give me answer asap."
Partitioning And Replication To Non-enterprise SQL 2005 Edition
Aug 24, 2007We currently want to move towards partitioning tables on a master server which is running SQL 2005 Enterprise Edition. However, we have transactional replication as well as log-shipping set-up against that server. The log-ship destination is also running Enterprise Edition, but the subscription server(s) are all Standard Edition only. Will there be any problems or special steps required in creating data partitions on some of these replicated tables if we don't upgrade our license?
View 1 Replies View RelatedWhy Would Tables Pulled In From ODBC In Access Be Different Than Tables In SQL 2005 Tables?
Jan 24, 2008I'm new to my company, although not new to SQL 2005 and I found something interesting. I don't have an ERD yet, and so I was asking a co-worker what table some data was in, they told me a table that is NOT in SQL Server 2005's list of tables, views or synonyms.
I thought that was strange, and so I searched over and over again and still I couldn't find it. Then I did a select statement the table that Access thinks exists and SQL Server does not show and to my shock, the select statement pulled in data!
So how did this happen? How can I find the object in SSMS folder listing of tables/views or whatever and what am I overlooking?
Thanks,
Keith
Partitioning
Sep 10, 2007Hello
I have a table containing 100,000 record for each year, and every year a new 100,000 record are inserted,I need to know how to make partion this table by year
I need to know the syntax
Thank you
Help With Partitioning And Between
Jul 25, 2006I have begun my quest to become familiar with SQL 2000 table partitioning and have had some success.
I've partitioned tables according to the "rules" and guidlines of other papers and the show plans look good for all cases.
But when I went to create another demo series, I got stuck.
I've created two tables, with the appropriate CHECK constraints, and with a "union all" view.
When inserting data, it goes to the right tables.
When reading data with a where clause like:
col1=10,
the show plan shows the query getting the data from the ONE correct table.
BUT
When the where clause looks like:
where col1 between 1 and 10:
the showplan shows the query getting data from both tables, instead of the table that 1 to 10 belongs to.
Help!
SQL Partitioning
Apr 22, 2008Hi guys,
1) I'm about to implement SQL Table/Index Partitioning for the first time. It seems really good, no downside. Is there an "Gotcha's" I gotta be weary of?
2) My tests show a clear performance gain. Is there a performance loss in other areas?
In "Designing Partitions to Improve Query Performance" it says this:
"In this way, the SQL Server query optimizer can process the join faster, because the partitions themselves can be joined. If a query joins two tables that are not collocated or are not partitioned on the join field, the presence of partitions may actually slow down query processing instead of accelerate it."
What does that mean?
If I have:
Select A.Col1, B.Col3
from A
join B on A.Col5=B.Col6
Does that mean I have to partition A.Col5 & B.Col6 the same way else my queries will get slower?
3) Does it take up more space? Do restores take longer?
4) How much maintenance is involved?
Is there a way of automating the creation of new partitions? Or do you just create loads that you'll need in the future e.g. always have a few months' partition created ahead of time?
The "Designing Partitions to Manage Subsets of Data" article in BOL seems to indicate some manual work every month (if you have a monthly partitioning strategy).
5) Why not partition every table that has over say a million rows?
6) If I create a Yearly Partition on a table that has been around for a long time, will it automatically partition all the indexes on that table? Or do you have to re-create the indexes for that to happen?
7) Neither table can have a full-text index in a partition move. Does that mean you can't ever partition tables with full-text indexes?
8) Partitioning doesn't seem to fit well with replication. Do you have to end up choosing between the two?
Partitioning A Table
Mar 27, 2008i have a table named "user" in which user which are located at different places within a city are recorded.
i want to group user with respect to there location like users of northern region are recorded first then users of western region and so on.
tell me from horizontal and vertical partitioning wh technique is better or i should use some other technique.
thanks for ur consideration.
Partitioning Question
Jan 24, 2002Hello all. My company's in the process of configuring our new Dell server boxes. We're contemplating whether to partition the drive (where DB will reside) into 1 large partition or several smaller partitions.
What are the pros and cons of each option? Any suggestion will be greatly appreciated.
Table Partitioning
Nov 14, 2000Hi,
I want to know more on table partitioning.I do not know where to get the right info.from.
I have a doubt - if a table is partitioned horizontally how does a query identifies where to pick up the data from i.e. from which part of partitioned table?
Partitioning Question
Oct 9, 2004I'm faced with a project that requires the caching of vacations.
Each vacation has a departure date & a price.
The amount of different vacations that will need to be cached is probably near 1 million per day.
I will then need to select the price(s) of vacations for either a single day or a date range (based on the vacation criteria).
I was considering creating a new partition (table with a date on it) every day.
This would allow me to jump into the needed table(s) based on the vacation search criteria. This would also allow me to drop tables with past dates.
I was considering running this all on 1 sql server. I was hoping I could create multiple threads for a datespan search and hit all the tables in the daterange at the same time.
Can you guys enlighten the noob on where I really need some help on this?
Partitioning Error
Apr 3, 2006Hi,
I am trying to implement partitioning on a table
depending upon the fiscal_month value...
The current values are from 1-6...
Create partition function LoadDataPartitionFunction ( smallint)
as
Range for values (1,2,3,4,5,6)
-- drop partition scheme LoadDataPartitionScheme
create partition scheme LoadDataPartitionScheme
as
Partition LoadDataPartitionFunction ALL to ([PRIMARY])
CREATE TABLE Load_Data_Partition (
[RowID] [int] NOT NULL,
[Fiscal_Month] [smallint] NOT NULL,
[Fiscal_Year] [smallint] NOT NULL,
....
[Service] [nvarchar](100) COLLATE
) ON LoadDataPartitionScheme (Fiscal_Month)
truncate table Load_Data_old --- same schema as load_data_partition
Alter table load_data_partition switch partition 1 to Load_Data_old
-- which month's data to be moved out
alter partition function LoadDataPartitionFunction () merge range (1)
Alter partition scheme LoadDataPartitionScheme next used [primary]
-- which months data to be moved in
alter partition function LoadDataPartitionFunction () split range(7)
Select * from sys.partition_range_values
function_id boundary_id parameter_id value
----------- ----------- ------------ -----
65545 1 1 2
65545 2 1 3
65545 3 1 4
65545 4 1 5
65545 5 1 6
65545 6 1 7
Alter table [Load_Data_new] switch to [Load_Data_partition] partition 6
ALTER TABLE SWITCH statement failed. Check constraints of source table Load_Data_new' allow values that are not allowed by range defined by partition 6 on target table 'Load_Data_partition'.
Values in Load_Data_new for fiscal_month is 7
But when i try
Insert into [Load_Data_partition]
Select * from [Load_Data_new]
where fiscal_month = 7
it works fine...
reference used : http://www.sqlskills.com/resources/Whitepapers/Partitioning%20in%20SQL%20Server%202005%20Beta%20I I.htm
Partitioning A Database
Nov 21, 2006hi all,
before i had a big database more than 90GB and it's growing very sharp so what i did is to create a summary database that gonna hold some aggregation and i create also three tables that gonna hold the data, on will hold the data for the last three months (very detailed information) one between 3 months and a year(less detailed) and the last one older than a year(less less detailed) these are the company requirement i'm working with.
then i transfer the data to the new tables with stored procedures.
now my question is: do i need to create a view for these three tables? and if yes how should i do it?!! cus i do not have the same columns in the three tables.
thanks experts.
Table Partitioning
Jun 16, 2008i want to partition a table containing about 3 million rows. The partition column will be of datetime type.
following is the partition function i have used
create partition function MyPartFun
(datetime) as range left for values ('07/30/2007','09/30/2007','11/30/2007','01/30/2008','04/30/2008')
following is the partition scheme i have used
create partition scheme PartScheme as
partition MyPartFun all to ([primary])
i know how to add partition column while creating the table
But dont know how to add above partition scheme to an already populated table
Plz help...
Vertical Partitioning
Jan 4, 2007Snehalata writes "does view for vertical partitioning improves the performance, since the view will have all the columns which exist in the original table(without partitioning?"
View 1 Replies View RelatedTable Partitioning
Apr 24, 2007Hi,
I have a database created using Enterprise Manager Wizard.
For example datafile db1_data.mdf and log file db1_log file exists.
All the tables are created in datafile db1_data.mdf.
Now to improve performance I want to implement table partitioning.
Can anybody tell me howto implement it with existing strutcure.
Suppose there is table Mytable in which all update and delete actions are performed regularly.And it contains about 10,0000 records.
I want to partition the table so that it contains 5000 records.
Solution with example highly appreciated.
Satish
REPLICATION With Partitioning
Jun 6, 2006two questions:
Im using Snapshot replication;
1. how can I replicate database1.table1 to database2.tablex1
by default replication will replicate it to database2.table1
2. If i have database2.table1 sitting on 10 partitions
where table is partitioned on PK_x where x is divided by 10
how can i make tableX1 to be a member of database2.table1
sitting on the 7th partition. that is pk_x = 70-79
partition schemes and function are already set
thanks
Table Partitioning
Dec 13, 2007Hi Experts,
I am new to Table Partitioning, Can any body guide me how to do table partitioning?
any way here is my scenario, we are having one database called "DATA" in SQL 2000 server and we have migrated to SQL 2005 by using backup and restore. and "DATA" is having about 15 tables and they are very very very big in size. and they dont have any index on a coulum name "DATETIME", but i want make table partition according to that perticular field "DATETIME" and right present we are having 6 months of data.
So, how to proceed further?
Your help will be appreciable..
SQL Table Partitioning
Mar 19, 2007
i am trying to partition an sql table in sql server 2005, i created the partition schema and the data files that i want the data to be filled in after the partition. After the partition is finished sql gave me partition is successful , but i noticed that the size of data files i created has not increased and their sizes are the same.
notice: i have a clustered index on this table, so i dropped this index and recreated it
Bellow the script that i am using
and thank you for your help in advance
What Does Mean Table Partitioning ?
Mar 7, 2008Hello frnds....what does mean by this ?
View 1 Replies View RelatedWhat Does Mean By Horizontal Partitioning ?
Mar 7, 2008Hello frnds......what does mean by Horizontal Partitioning ?
View 4 Replies View RelatedCandidate For Partitioning?
Feb 12, 2008
I have a table that looks like this:
ItemID TokenID WordCount
12345 11334 5
12345 3453 1
12345 546546 2
12345 242555 1
12345 556346 4
12345 346346 1
Code SnippetCREATE TABLE [dbo].[ItemTokensLink](
[ItemID] [int] NOT NULL,
[TokenID] [int] NOT NULL,
[WordCount] [int] NOT NULL DEFAULT ((1)),
CONSTRAINT [PK_ItemTokensLink_1] PRIMARY KEY CLUSTERED
(
[ItemID] ASC,
[TokenID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
So this table has now reached over 22 million rows. The problem is my machine only has 1GB ram....so SQl Server tries to load up the whole table and this is ~560MB....equals zero ram for ...well anything else!
Does SQL Server load up an entire table when performing an INSERT?
Code Snippet
INSERT INTO ItemTokensLink(ItemID, TokenID, WordCount)
SELECT DISTINCT @ItemID as ItemID, t.TokenID, Count(t.TokenID) as WordCount
FROM #Tokens t
Group by TokenID
@ItemID is parameter provided
#Tokens is a temp table create with a word list
Would partitioning help here?
The table is is 80% of the time added to and the ItemID will always increase. What is the best to deal with massive tables that are inserted to frequently?
How does SQL Server decide when to load a table into memory?
TIA
Partitioning Archiving
Feb 21, 2007Hello,
I have current events going to a log, and I'm implementing partitioning it into weeks using the following function...
CREATE PARTITION FUNCTION [trackPointLogWeekPF](int)
AS RANGE LEFT FOR VALUES (7, 14, 21, 28)
and in the table create I add an extra field of day number to pass to the function...
[intPartitionDayNum] AS (datepart(day,[dtTrackPointTime]))
So if that's all for the current month, is it possible to have monthly partitions for the older data so that I could drop off a month from a year ago for example or would I need to keep it weekly?
Thanks for any help.
Partitioning Question
May 5, 2008I have a question about Partitions and if this is the best approach for my situation.
I have a table with many rows (300 Million or more) where there is a column that represents a date (actually it is an integer in the form of YYYYMM - example 200501 - January of 2005)
The data prior to a specific date (in my case 3 full years before the current YYYYMM - at this time 200501) is data that never changes. The data at that date (200501) and on is data that changes every month.
I have approximately 200 Million rows that are static (and growing every year) and 100 million that changes every month.
I wanted to do the following (and keep in mind i have to do a delete from this table every month and an insert every month)
1. Create a simple partition function like this to represent 2 buckets for data (one prior to 200501 and one post 200501)
CREATE PARTITION FUNCTION partPeriodData (INT)
AS RANGE RIGHT FOR VALUES (200501)
2. Create a partition scheme as follows (to separate the data from the two buckets onto two separate file groups)
CREATE PARTITION SCHEME partPeriodScheme AS
PARTITION partPeriodData TO
(ETOFinalHistoricalFG, ETOFinaCurrentlFG);
3. I Created my database as follows
CREATE DATABASE [Final] ON PRIMARY
( NAME = N'ETOFinalPrimary', FILENAME = N'd:DataETOFinalPrimary.mdf' , SIZE = 102400KB , MAXSIZE = UNLIMITED, FILEGROWTH = 102400KB ),
FILEGROUP [ETOFinaCurrentlFG]
( NAME = N'ETOFinalCurrent', FILENAME = N'd:DataETOFinalCurrent.ndf' , SIZE = 102400KB , MAXSIZE = UNLIMITED, FILEGROWTH = 102400KB ),
FILEGROUP [ETOFinalHistoricalFG]
( NAME = N'ETOFinalHistorical', FILENAME = N'd:DataETOFinalHistorical.ndf' , SIZE = 102400KB , MAXSIZE = UNLIMITED, FILEGROWTH = 102400KB )
LOG ON
( NAME = N'ETOFinalLog', FILENAME = N'd:dataETOFinalLog.ldf' , SIZE = 102400KB , MAXSIZE = 2048GB , FILEGROWTH = 102400KB )
GO
4. I Created my table as follows
CREATE TABLE [dbo].[f_eurostatdata](
[LoadId] [int] IDENTITY(1,1) NOT NULL,
[DeclarantId] [int] NULL,
[Partner] [int] NULL,
[ProductId] [int] NULL,
[Flow] [int] NULL,
[Stat_Regime] [int] NULL,
[Period] [int] NULL,
[Value1000ECU] [numeric](34, 4) NULL,
[QuantityTon] [bigint] NULL,
[SupQty] [numeric](34, 4) NULL,
[DateCreated] [datetime] NULL CONSTRAINT [DF_f_eurostatdata_DateCreated] DEFAULT (getdate()),
CONSTRAINT [PK_f_eurostatdata] PRIMARY KEY CLUSTERED
(
[LoadId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON partPeriodScheme(Period)
When i create my table i get the following message
The filegroup 'PRIMARY' specified for the clustered index 'PK_f_eurostatdata' was used for table 'dbo.f_eurostatdata' even though partition scheme 'partPeriodScheme' is specified for it.
Am i doing this right?
Corey