Partition Function
Feb 25, 2008
Guys,
I have names in the database which I want partition by last name - for example last names starting with A, B, C, D should go to the file group 1. last names starting with E, F, G, H should go to file group 2.
I am trying to use the following function - but do I specify in the function that last names with with A, B, C, D should go to the file group 1
CREATE PARTITION FUNCTION myRangePF3 (char(20))
AS RANGE RIGHT FOR VALUES ('EX', 'RXE', 'XR');
Is there any way to modify partition function to accomplish this?
Any suggestions and inputs would help
Thanks
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Feb 20, 2007
I can't seem to find a way to do the following:create table part_table (col1 int,col2 datetime) on psX (datename(week,col2))I want to partition based on the week number of a date field.So if I enter in data like the following in my part_table:(1, 1/1/2007) should go into partition 1 for week #1(52, 12/21/2007) should go into partition 52 for week #52 of the yearI tried adding in a computed column, but it says its nondeterministic.
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May 16, 2008
Am I correct in assuming, in partitioning scenarion - the NUMBER OF PARAMETERS in a partitioning function is equal to number of file groups?
------------------------
I think, therefore I am - Rene Descartes
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Oct 29, 2015
I am facing issue in generating total sum and daily sum from table ThresholdData.
DailyTransactionAmount should be sum of todays amount in the table
TransactionAmount should be sum of all amount in the table.
Basically,
1. I don't want to scan ThresholdData table twice.
2. I don't want to create temporary table/table variable/CTE for this.
3. Is there is any way to make it done in single query.
I hope, where criteria is not possible in partition function. I am trying query something as given below,
SELECT TransactionDate,
TransactionAmount,
ROW_NUMBER() over (order by TransactionDate) AS TransactionCount,
SUM(TransactionAmount) over (partition by id ) AS TransactionAmount,
SUM(TransactionAmount) over (partition by id ,CONVERT (DATE, @TodaysTransactionDate)) AS DailyTransactionAmount
FROM ThresholdData
WHERE id = @id
AND transactiondate >= dateadd(d,-@TransactionDaysLimit,@TodaysTransactionDate)
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May 4, 2006
Hi,I need to create a partition table but the column on which I need tocreate a partition may not have any logical ranges. So while creatingor defining partition function I can not use any range.likeCREATE PARTITION FUNCTION my_part_func (NUMERIC(7)) AS RANGE LEFT FORVALUES (1,100,1000);Is there any way to define partition function in SQL Server somethinglike Oracle HASH partitions where logical range is unkown?ThanksSameer
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May 26, 2008
Normally we create a new table for tabler partitioning, like:
Code Snippet
CREATE TABLE [dbo].[Sales]
(
[SalesID] [int] IDENTITY(1,1) NOT NULL,
[SalesDate] [datetime] NOT NULL,
[col_01] varchar(50) NULL,
[col_02] varchar(50) NULL,
..
) ON [ps_Sales](SalesDate)
GO
with
Code SnippetCREATE PARTITION SCHEME [ps_Sales]
AS
PARTITION PFN_Sales TO ([FG_20080501], [FG_20080516], [FG_20080601], [FG_20080616],
[FG_20080701], [FG_20080716], [FG_20080801], [FG_20080816],
[FG_20080901], [FG_20080916], [FG_20081001], [FG_20081016])
But what if I have [dbo].[Sales] existed in db, that have attached to [PRIMARY]?
Alter table?
or I need to create a temp table first?
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Dec 20, 2013
DECLARE @DatePartitionFunction nvarchar(max) = N'CREATE PARTITION FUNCTION DatePartitionFunction (datetime) AS RANGE RIGHT FOR VALUES (';
DECLARE @i datetime = '2007-09-01 00:00:00.000';
WHILE @i < '2008-10-01 00:00:00.000'
BEGIN
SET @DatePartitionFunction += '''' + CAST(@i as nvarchar(10)) + '''' + N', ';
[Code] ....
Msg 7705, Level 16, State 2, Line 1
Could not implicitly convert range values type specified at ordinal 1 to partition function parameter type.
However if I change to datetime2 it works
DECLARE @DatePartitionFunction nvarchar(max) = N'CREATE PARTITION FUNCTION DatePartitionFunction (datetime2) AS RANGE RIGHT FOR VALUES (';
DECLARE @i datetime2 = '2007-09-01 00:00:00.000';
WHILE @i < '2008-10-01 00:00:00.000'
BEGIN
SET @DatePartitionFunction += '''' + CAST(@i as nvarchar(10)) + '''' + N', ';
[Code] ...
Is the data type of the column used for partitioning. All data types are valid for use as partitioning columns, except text, ntext, image, xml, timestamp, varchar(max), nvarchar(max), varbinary(max), alias data types, or CLR user-defined data types.
In this case why isn't datetime works?
version is as follow:
Microsoft SQL Server 2012 (SP1) - 11.0.3128.0 (X64)
Dec 28 2012 20:23:12
Copyright (c) Microsoft Corporation
Enterprise Evaluation Edition (64-bit) on Windows NT 6.1 <X64> (Build 7601: Service Pack 1)
from [URL] .....
Table and index partitioning is supported in this edition
so I don't know why it fails!
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Apr 15, 2015
I have a heavy database , More than 100 GB only for six month .every Query on it takes me along time and I dont have enough space to add more indexes.by a way I decided to do partitioning. I create a partition function , on date filed and all Data records per month was appointed to a separate file.And is partitioning only for Future data entry?
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Aug 28, 2015
I'm currently stuck with a table that has 350 mil records. Querying this table is insanely slow so I had a better look at existing yearly partitioning. I already managed to partition on a month level which increased the performance/querrying a lot. I did this on the staging table where I used an alter statement to split the 2015 partition by 12 months.
However, in our project we used Data Vault. This means that we have 4 tables (hub, sathub, link, satlink), all carrying 350 mil records. The problem is that altering the partition function does not work. The server cannot handle this action. What the best way is to do this, without having to drop/reload all tables.
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Jul 6, 2006
i have a table named table1 sitting on a a partittion scheme px.
table1 is partitioned on u_id by tens,
first partion u_id=0 to 9
second partion u_id=10 to 19
third partion u_id=20 to 29
ans so on and so forth
i have a table named table2 with
records having u_id = 13 to 16
obviously belonging to the second partion.
i want to load table2 to table1 as fast as i could with
the following requirements:
all contents of partition 2 of table1 must be deleted before loading
table2 ceases to exist after the operation
how will i do that.
thanks.
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May 15, 2008
Hi All,
Can someone take a look at my code and tell me what i'm doing in wrong. The script runs fine but when i go to table property it says the table is not partitioned. Thanks for your help.
create database [mypartition]
go
--CREATE FILEGROUP
USE [mypartition]
GO
ALTER DATABASE mypartition ADD FILEGROUP Y2000_filegroup
ALTER DATABASE mypartition ADD FILEGROUP Y2001_filegroup
ALTER DATABASE mypartition ADD FILEGROUP Y2002_filegroup
ALTER DATABASE mypartition ADD FILEGROUP Y2003_filegroup
ALTER DATABASE mypartition ADD FILEGROUP Y2004_filegroup
ALTER DATABASE mypartition ADD FILEGROUP Y2005_filegroup
ALTER DATABASE mypartition ADD FILEGROUP Y2006_filegroup
ALTER DATABASE mypartition ADD FILEGROUP Y2007_filegroup
ALTER DATABASE mypartition ADD FILEGROUP Y2008_filegroup
ALTER DATABASE mypartition ADD FILEGROUP Y2009_filegroup
--CREATE FILES
USE mypartition
GO
ALTER DATABASE mypartition
ADD FILE
(NAME = mypartition_detail_2000,
FILENAME = 'F:ss_datadatadetail_2000.ndf',
SIZE = 2MB)
TO FILEGROUP Y2000_filegroup;
ALTER DATABASE mypartition
ADD FILE
(NAME = mypartition_detail_2001,
FILENAME = 'F:ss_datadatadetail_2001.ndf',
SIZE = 2MB)
TO FILEGROUP Y2001_filegroup;
ALTER DATABASE mypartition
ADD FILE
(NAME = mypartition_detail_2002,
FILENAME = 'F:ss_datadatamdetail_2002.ndf',
SIZE = 2MB)
TO FILEGROUP Y2002_filegroup;
ALTER DATABASE mypartition
ADD FILE
(NAME = mypartition_detail_2003,
FILENAME = 'F:ss_datadatadetail_2003.ndf',
SIZE = 2MB)
TO FILEGROUP Y2003_filegroup;
ALTER DATABASE mypartition
ADD FILE
(NAME = mypartition_detail_2004,
FILENAME = 'F:ss_datadatadetail_2004.ndf',
SIZE = 2MB)
TO FILEGROUP Y2004_filegroup;
ALTER DATABASE mypartition
ADD FILE
(NAME = mypartition_detail_2005,
FILENAME = 'F:ss_datadatadetail_2005.ndf',
SIZE = 2MB)
TO FILEGROUP Y2005_filegroup;
ALTER DATABASE mypartition
ADD FILE
(NAME = mypartition_detail_2006,
FILENAME = 'F:ss_datadatadetail_2006.ndf',
SIZE = 2MB)
TO FILEGROUP Y2006_filegroup;
ALTER DATABASE mypartition
ADD FILE
(NAME = mypartition_detail_2007,
FILENAME = 'F:ss_datadatadetail_2007.ndf',
SIZE = 2MB)
TO FILEGROUP Y2007_filegroup;
ALTER DATABASE mypartition
ADD FILE
(NAME = mypartition_detail_2008,
FILENAME = 'F:ss_datadatadetail_2008.ndf',
SIZE = 2MB)
TO FILEGROUP Y2008_filegroup;
ALTER DATABASE mypartition
ADD FILE
(NAME = mypartition_detail_2009,
FILENAME = 'F:ss_datadatadetail_2009.ndf',
SIZE = 2MB)
TO FILEGROUP Y2009_filegroup;
--CREATE PARTITION FUNCTION
USE [mypartition]
GO
CREATE partition FUNCTION detail_part_function (varchar(10)) AS
RANGE LEFT FOR VALUES('2001','2002','2003','2004','2005','2006','2007','2008')
GO
--CREATE PARTITION SCHEME
USE [mypartition]
GO
CREATE PARTITION SCHEME detail_part_scheme AS
PARTITION detail_part_function TO
(Y2000_filegroup, Y2001_filegroup,Y2002_filegroup,Y2003_filegroup,Y2004_filegroup,Y2005_filegroup,Y2006_filegroup,Y2007_filegroup,Y2008_filegroup,Y2009_filegroup)
GO
-- Now just create a table that uses the particion scheme
USE [mypartition]
GO
/****** Object: Table [dbo].[partitioned_table] Script Date: 05/14/2008 09:44:21 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[partitioned_table](
[id] [int] NOT NULL,
[fiscal_year] [varchar](10) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
CONSTRAINT [PK_partitioned_table] PRIMARY KEY CLUSTERED
(
[id] ASC
)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON detail_part_scheme(fiscal_year)
GO
SET ANSI_PADDING OFF
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Feb 9, 2006
I can see lot of documentation on Range Partitioning. Is there any other type of partition supported in SQL Server 2005?
For example, I have a Fact table having Billion rows. It has a column called BATCH_ID. A BATCH_ID corresponds to 10-20 Million rows and it is a running sequence number like 1,2,3 etc. (not an identity column). Is there anyway I can specify a partition function with BATCH_ID column as an int value? Will the SQL Server automatically does the partition on each int value in that case? If not, what is the best way to do it?
Thanks in advance for all help in this
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Jul 3, 2004
Hi,
I recently installed MSSQL 2000 and sp3a onto a windows 2003 server in a test lab. I configured one big c: partion on this os and installed the db in the default location.
I need to detach the db's on this server and re-attach them onto another MSSQL 2000/sp3a server running 2003 os with a partition scheme like this:
c: = 20 gigs for the os
e: = 600 gigs for the data
I could not re-attach the db's onto the e:default path odatabase
Is there a work-around for this? This makes sense to me as to why it is not working and was an install oversight on my part but there has to be a way to overcome this delima?
Thanks in advance,
damnit
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Nov 22, 2005
Hi
Please help me how to do the Horizontal table partition??
I have to split the table in to multiple sub tables with same columns and less rows and then I have to use each sub table.
Thanks you in advance....
Regards
LakshmiPK
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Oct 10, 2007
Hi everybody
Does anyone know where I can find code to PROCESS a Partition using DSO.
Thank a lot.
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Mar 31, 2008
I keep getting this error:
Msg 156, Level 15, State 1, Line 12
Incorrect syntax near the keyword 'over'.
What am I missing? The max() over statement looks just like the statement in the documentation.
select RegistrationId,
OrderId,
Sequence,
Title,
InformalFirstName,
FirstName,
MiddleName,
Lastname,
EntryDate,
max(Sequence) over(partition by RegistrationId) as 'maxsequence'
from registration
where OrderId = '68379449583' and
Year = '2008' and
Active = 'Yes'
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May 21, 2008
I have a situation where my SQL works everywhere else but my COBOL compiler complains wherever I use PARTITION BY. I can't find a workaround for that problem so I would like to remove all the PARTITION BYs. I'm not confident that I can do this accurately and would like some help getting started.
Here is my simplest example:
SELECT FESOR.REGION, FESOR.TYPE,
COUNT(*) OVER (PARTITION BY FESOR.REGION, FESOR.TYPE)
FROM FESOR, FR
where FESOR.phase = 'Ref'
and FESOR.assign is null
and FESOR.comp_date is null
and FESOR.region = FR.REGION
and FESOR.type = FR.TYPE
and FR.REP_ROW='A'
GROUP BY FESOR.REGION, FESOR.TYPE
What I'm looking for is a modified version of the SQL above which returns the same result set without using PARTITION BY.
Thanks in advance for your assistance.
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Aug 28, 2007
Hi,
I am using SQL Server 2000 SP3 Version 8.00.7.60. Can I create instances of SQL server 2000 even if it's already installed?
Thanks for your help in advance!
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Feb 27, 2008
All,
I have a partitioned table (1.7 billion rows) that is across 97 partions. The table is partitioned on datetime field.
When I query only this table with datetime field in where clause I see that cleary it outperforms the unpartitioned table.
When this table is joined to 3 tables it performs no better than
the non-partitioned table... it seems that the query does a partition scan.
The part. table has a 3 part composite clustered index and
a NC index on the partion field value.
Would appreciate any feedback.
thanks
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Mar 7, 2008
SUM(qtycolumn) OVER (PARTITION BY columnA, Column B)
is this function supported by Sql Ce?
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Nov 14, 2007
HI all,
I am in the progress of migrating my 2000 install over to SQL05 and onto a couple of new boxes. I have 2 Dell 1850's to set up mirroring on and wanted to know your opinion on the best partition setup. The 1850's are a 2 disk machine so it has to be a RAID 1 setup. I am just unsure of the benefit of partitioning the logical drive to seperate the log files from the data files.
Should I partition the drive, a 300G SCSI into 2 partitions and keep the logs on one partition and the data on another? Can anyone tell me if there is a benefit to doing this?
If there is a more pratical solution can you explain?
Thanks in advance!
Jason
Sydney Australia
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Mar 27, 2007
Most examples for SQL Server 2005 involve a sales table that you split based on date, i.e. sales records prior to 2000 go to this partition, and the ones after that go to another one. Nice and simple.
Say I have a sales table:
id Amount Date
1 10 1/1/1999
2 9.99 1/1/2007
Now then, I put all the records prior to 2000 in it's own partition.
So when I do something like this: SELECT * FROM Sales WHERE DATE = 1/1/1999
the SQL server will know which partition to look at. Very nice.
Now then, if I do this: SELECT * FROM Sales WHERE id = 1
How will the SQL server know which partition to look at?
Thank You!
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Oct 31, 2006
hi list
i have a table named stgBudgetFact, that is partitioned on DivisionID.
each DivisionID goes into its own partition, which is on its own file group.
the etl guru on the project wants to be able to truncate the partition, not do a delete from the table based on DivisionID.
Is it possible to truncate the partition somehow (remove rows where DivisionID = 3 for instance without ALTER DATABASE, where the medicine is worse than the disease) and then reestablish the partition so we can restart a failed load by division?
i really hope something like this is possible
thanks
drew
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Aug 30, 2007
hello,
I want to copy all or part data in one partition to another partition,how can I do?
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Nov 29, 2007
Dear all,
Sorry if my post misplaced. I have a table that contain huge data so I made a partition function and partition schema. Unfortunately there's only one column to be allowed as a partition column whereas my queries using a few columns. Can we make many partition function that apply to one partition schema ? I search no result in SQL BOL.
Thanks in advance.
Best regards,
Hery
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Dec 13, 2007
Hi Every body,
I am creating Table partition in tables but i am getting this error can you anybody plz help how can we do table partition in the database
CREATE TABLE PartitionTable (col1 int, col2 char(10))
ON myRangePS2 (col1) ;
GO
CREATE TABLE NonPartitionTable (col1 int, col2 char(10))
ON test2fg1 ;
GO
ALTER TABLE PartitionTable SWITCH PARTITION 2 TO NonPartitionTable ;
GO
Msg 1921, Level 16, State 1, Line 2
Invalid partition scheme 'myRangePS2' specified.
Msg 1921, Level 16, State 1, Line 1
Invalid filegroup 'test2fg1' specified.
Msg 4902, Level 16, State 1, Line 1
Cannot find the object "PartitionTable" because it does not exist or you do not have permissions.
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Aug 20, 2007
Does anyone know how much free space should be left available on a storage partition to allow for the optimum performance? In fact is there any performance benefit to allowing a certain amount of free space on a partition that is occupied by SQL data files?
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Nov 7, 2007
How complex can the over (partition by...) window functions be? All the examples I see in BoL, the partition clause is the same for each window function. Can it be different? How different?
Here are some snippets of where I'd like to take this. Right now I'm using successive views to bring the results to a single row.
SUM(building_function_table.e_and_g_square_foot + building_function_table.auxillary_square_foot)
OVER (PARTITION BY building_function_table.fice_code, building_function_table.building_number) AS sqft
SUM(building_function_table.e_and_g_square_foot * function_table.square_foot_value)
OVER (PARTITION BY building_function_table.fice_code, building_function_table.building_number,building_function_table.function_code) AS repl_value_e_g
SUM(building_needs_table.percentage * (building_needs_table.age / system_component_table.useful_life) * component_multiplier_table.multiplier)
OVER (PARTITION BY building_needs_table.fice_code, building_needs_table.building_number, building_needs_table.system_code, building_needs_table.system_component_code, building_needs_table.function_code) as maint_needs
And it gets even more complex, but these are all I've written because I don't know if it will work.
These would be all part of a giant overhead view of a building maintenance database. It's normalized and the respective tables above are all simple inner joins on the primary key of their parent.
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Jan 23, 2007
1 HIS_HTTP_LOG a partition table2 REL_HTTP_LOG not a partition table,the same structure of HIS_HTTP_LOG；3 When HIS_HTTP_LOG doesn't exist any index the following executed succeed
ALTER PARTITION SCHEME PS_HIS_HTTP_LOG NEXT USED [FG_03] ALTER PARTITION FUNCTION PF_HIS_HTTP_LOG() SPLIT RANGE ('20070331 23:59:59.997') ALTER TABLE TMP_HTTP_LOG SWITCH TO HIS_HTTP_LOG PARTITION 3
4 However when I added the index in HIS_HTTP_LOG and execute the step 3,It made error: a) CREATE INDEX IDX_HIS_HTTP_LOG_001 ON HIS_HTTP_LOG(USERID)ON PS_HIS_HTTP_LOG (STARTIME) b) ALTER PARTITION SCHEME PS_HIS_HTTP_LOG NEXT USED [FG_03] ALTER PARTITION FUNCTION PF_HIS_HTTP_LOG() SPLIT RANGE ('20070331 23:59:59.997') ALTER TABLE TMP_HTTP_LOG SWITCH TO HIS_HTTP_LOG PARTITION 3
========================= Error messages================================================"ALTER TABLE SWITCH statement failed. There is no identical index in source table 'TMP_HTTP_LOG SWITCH ' for the index 'IDX_HIS_HTTP_LOG_001' in target table 'HIS_HTTP_LOG' ."
When I added index in REL_HTTP_LOG ,it gave me the same error message
Could you tell me how can I solve the problem !
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Jun 20, 2002
I have the pagefile.sys on the same partition (C:)as the database files. I been advised this is not a good idea. I'm getting paging. I'd like to move the swapfile to another partition on the same drive. Is that a good idea, or should I move it to another physical disk? And is it OK to leave the OS partition (C:) without any swapfile? Thanks!!
rob
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Dec 6, 1999
Does anyone know who can we do partition od table in sqlserve 7?
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Jan 21, 1999
Hi!
I'm installing a new SQL Server machine. During NT Server
installation our NT support guy converted the only 2GB FAT
C: partition to NTFS. So as of right now all my 4 8GB drives are
NTFS. I think it would be better to keep this C: partition in FAT
because, as of my knowledge, having FAT boot partition can help
to boot the machine in case of NT crash.
Is there anything that I'm really losing by this conversion to NTFS or I
should not be worried so much about it? Does it put my SQL Server
databases, database .dat files or NT Server in more danger situation
in case of any crash?
Or it's giving me some advantages?
Thanks
Ninel
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Jul 17, 2001
Hi folks,
Recently i've been working on a new project that would partition a large table 2 smaller tables. I then create a view to union the 2 smaller tables(table A, B). I've been getting a strange error when i try to update, insert, delete a record through the view. "View needs partitioning column"....i find this strange. Both of my table have a cluster primary key consisting of 3 columns, and one of the 3 columns(date field) consist of a check constraint. The constraint is used to determine what record goes into which table. Am i missing anything else? The really strange part is sometime it works, and sometimes i get the error message.
Any thoughts?
Joe R.
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