SQL 2012 :: Dynamic Partitioning Of Table Server
Dec 3, 2014
I need Dynamic Partition of SQL Table.
1. What is the best practice for partitioning (on date column)
2. The project on which i am working correctly have a case where in i get the update of my status flag after few days (Say 15 - 30) in that case if my data got into partition table how to update and how to search which partition has my data
3. Is creating partition occupies more disk space?
4. Is every partition would need index?
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Feb 25, 2014
Script to do the table partitioning for a 500gb in sliding window technique?
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Aug 25, 2014
We have a database and have 6-7 growing tables. All the tables have Primary and foreign key relation. I want to do partition based on the date column.
I need 3 partitions
First partition has to hold present data
second partition need to hold the previous year data (SAS storage)
Third partition need to hold all the old data and need to be in the archive database
I understand that first we need to disable the constraints (Indexes PK & FK)
Then create partition function and partition schema
Then Create the Constraints again
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Jul 31, 2015
I am new to Partitioning tables. My scenario is as listed below.
I am getting Monthly Transaction data on Every First Monday of the Month and I want to do partition for those data.
For Example: Let's say I will get my next monthly data on August 3rd 2015 which is First Monday of the month of August.
I want those Transaction data to go in new partitioned FileGroup in my existing partitioned table. How can I do partition for this kind of scenario ? Can we create one or multiple Stored Procedure which will create New Partition and load data in that partition ?
FYI, this monthly data will be loaded in Staging table and that table has LoadDate column which will have 2015-08-03 in it. I am using SQL 2012 Enterprise edition.
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Mar 6, 2014
If the partitioning MERGE command attempts to drop historic data at the wrong boundary point then data movement between file groups may be necessary before or during the next index rebuild. The script below creates 2 test tables, one using a range right function and the other using range left. The partitioning key is a number between 0 - 59, an empty partition is maintained at the start and end of ranges, 4 partitions contain data in the ranges between 0-14, 15-29, 30-44, 45-59. Data in the lowest range (0 - 14) is switched out and a merge command is run, edit the script to try the different merge boundaries, edit the variables at the start to suit runtime environment 'Data Drive' & 'Log Drive' paths.Variables are redeclared but commented out at the start of code blocks to allow stepping through if desired.
--=================================================================================
-- PartitionLabSetup_20140330.sql - TAKES ABOUT 1 MINUTE TO EXECUTE
-- Creates a test database (workspace)
-- Adds file groups and files
-- Creates partition functions and schema's
-- Creates and populates 2 partitioned tables (PartitionedRight & PartitionedLeft)
[Code] ....
The T-SQL code below illustrates one of the problems caused by MERGE at the wrong boundary point. File Group 3 of the Range Right table is empty according to the data space views, it cannot be dropped though. File Group 2 contains data according to the views but you are allowed to drop it's file.
USE workspace;
DROP TABLE dbo.PartitionedRightOut;
USE master;
ALTER DATABASE workspace
REMOVE FILE PartitionedRight_f3 ;
--Msg 5042, Level 16, State 1, Line 2
--The file 'PartitionedRight_f3 ' cannot be removed because it is not empty.
ALTER DATABASE workspace
REMOVE FILE PartitionedRight_f2 ;
-- Works surprisingly although contains data according to system views.
If the wrong boundary point is used then the system 'Data Space' views show where the data should be (FG2), not where it actually still is (FG3). You can't tell if data movement between file groups is pending and the file group files are not protected from deletion by the OS.
I'm not sure this is worth raising a connect item for but it would be useful knowing where data physically resided after a MERGE RANGE and before an INDEX REBUILD, the data space views reflect the logical rather than the physical location if a data movement is pending.
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May 15, 2014
I have a very large table that I need to partition. Ideally the table will write to three filegroups. I have defined the Partition function and scheme as follows.
CREATE PARTITION FUNCTION vm_Visits_PM(datetime)
AS RANGE RIGHT FOR VALUES ('2012-07-01', '2013-06-01')
CREATE PARTITION SCHEME vm_Visits_PS
AS PARTITION vm_Visits_PM TO (vm_Visits_Data_Archive2, vm_Visits_Data_Archive, vm_Visits_Data)
This should create three partitions of the vm_Visits table. I am having a few issues, the first has to do with adding a new clustered index Primary Key to the existing table. The main issue here is that the closed column is nullable (It is a datetime by the way). So running the following makes SQL Server upset:
ALTER TABLE dbo.vm_Visits
ADD CONSTRAINT [PK_vm_Visits] PRIMARY KEY CLUSTERED
(
VisitID ASC,
Closed
)
ON [vm_Visits_PS](Closed)
I need to define a primary key on the VisitId column, but I need to include the Closed column in order to partition on it.how I would move data between partitions on a monthly basis. Would I simply update the Partition function, or have to to some sort of merge, split, or switch function?
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Jan 13, 2015
I am trying to select data from table that have YYMM as table names, they are formatted table1410,table1411, table1412. I am trying to format it like this
declare @tablename60 varchar(50) = 'table' + SUBSTRING(CAST(DATEPART(YY,dateadd(yy, -1, getdate())) as varchar(4)),3,4) + SUBSTRING(CAST(DATEPART(MM,dateadd(mm, -1, getdate())) as varchar(2)),1,2)
But this is hard coding the YYMM, and I would like to have it pull 30,60,90 days fromthe first of the current month. I am having a bit of trouble formatting, how to accomplish this.
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Mar 26, 2014
I have a query
DECLARE @DynamicPivotQuery AS NVARCHAR(MAX)
DECLARE @ColumnName AS NVARCHAR(MAX)
--Get distinct values of the PIVOT Column
SELECT @ColumnName= ISNULL(@ColumnName + ',','')
+ QUOTENAME(name)
[Code] ....
and so on.
I've tried putting my group by everywhere but it's not working. I'm missing something but what?
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Jul 2, 2014
I am having trouble figuring out why the following code throws an error:
declare
@cols nvarchar(50),
@stmt nvarchar(max)
select @cols = ('[' + W.FKStoreID + ']') from (select distinct FKStoreID from VW_PC_T) as W
select @stmt = '
select *
[Code] ...
The issue that I am having is:
Msg 245, Level 16, State 1, Line 4
Conversion failed when converting the varchar value '[' to data type int.
I know that I have to use the [ ] in order to run the dynamic sql. I am not sure what is failing and why as the syntax seems to be clean to me (obviously it is not).
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Mar 9, 2015
I have query which is used to dynamically insert value but not working. We are trying to get all table names and insert dynamically to all tables by looping through table names.
declare @a varchar(max),@i int;
declare @table table(rno int, name varchar(max))
declare @b varchar(max)
insert into @table
select row_number() over( order by table_name) rno, table_name from INFORMATION_SCHEMA.tables
declare @tblname varchar(max)
[Code] .....
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Jul 2, 2015
I have started working with dynamic queries recently. I am using a table variable and need to add a join in query dynamically.
For Eg- @TableVariable
SET @query_from = @query_from + CHAR(10) + ' JOIN @TableVariable on ABC.ID = @TableVariable.ID '
BUt it gives an error that @TableVariable must be declared
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Jan 23, 2014
I am trying to pivot table DYNAMICALLY but couldn't get the desired result .
Here is the code to create a table
create table Report
(
deck char(3),
Jib_in float,
rev int,
rev_insight int,
jib_out float,
[Code] .....
Code written so far. this pivots the column deck and jib_in into rows but thats it only TWO ROWS i.e the one i put inside aggregate function under PIVOT function and one i put inside QUOTENAME()
DECLARE @columns NVARCHAR(MAX), @sql NVARCHAR(MAX);
SET @columns = N'';
SELECT @columns += N', p.' + QUOTENAME(deck)
FROM (SELECT p.deck FROM dbo.report AS p
GROUP BY p.deck) AS x;
[Code] ....
I need all the columns to be pivoted and show on the pivoted table. I am very new at dynamic pivot. I tried so many ways to add other columns but no avail!!
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Sep 9, 2015
I wan to print out the dynamic query result so that i can use as a script for some tasks.This is the scenario wher i got stuck, i am not able to print out the result as it return only the last value because of OUTPUT param limitation
Is there any way to print all the 3 INSERT stmt.
IF OBJECT_ID ('tempdb.dbo.#temp') IS NOT NULL
DROP TABLE #temp
CREATE TABLE #temp (Command varchar(8000))
INSERT INTO #temp
SELECT 'INSERT INTO Test1(column1,column2)values(1,2)'
UNION ALL
SELECT 'INSERT INTO Test2(column1,column2)values(1,2)'
[code]....
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Feb 3, 2015
I have this query:
SELECT TOP (100) PERCENT dbo.Filteredfs_franchise.fs_franchiseid AS FranchiseId, dbo.Filteredfs_franchise.fs_brandidname AS Brand,
dbo.Filteredfs_franchise.fs_franchisetypename AS [Franchise Type], dbo.Filteredfs_franchise.fs_franchisenumber AS [Franchise Number],
dbo.Filteredfs_franchise.fs_transactiontypename AS [Transaction Type], dbo.Filteredfs_franchise.fs_franchisestatusname AS [Status Code],
[Code] ....
I need to pivot this so I can get one row per franchiseID and multiple columns for [Franchisee Name Entity] and [Franchise Name Individual]. Each [Franchisee Name Entity] and [Franchise Name Individual] has associated percentage of ownership.
This has to be dynamic, because each FranchiseID can have anywhere from 1 to 12 respective owners and those can be any combination of of Entity and Individual. Please, see the attached example for Franchise Number 129 (that one would have 6 additional columns because there are 3 Individual owners with 1 respective Percentage of ownership).
The question is how do I PIVOT and preserve the percentage of ownership?
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May 29, 2015
I have written a script to pivot a table into multiple columns.
The script works when run on its own but gives an error when i try to create a view or aprocedure from the same script. The temporary table #.... does not work so i have converted it to a cte.
Here is a copy of the script below
-- Dynamic PIVOT
IF OBJECT_ID('#External_Referrals') IS NULL
DROP TABLE #External_Referrals;
GO
DECLARE @T AS TABLE(y INT NOT NULL PRIMARY KEY);
[Code] ....
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Nov 4, 2015
Within a trigger, I'm trying to create a unique table name (using the NEWID()) which I can store the data that is found in the inserted and deleted tables.
Declare @NewID varchar(50) = Replace(convert(Varchar(50),NEWID()),'-','')
Declare @SQLStr varchar(8000)
Set @SQLStr= 'Select * into [TMPIns' + @newID + '] from inserted'
Exec (@SQLStr)
I get the following error: Invalid object name 'inserted'
I know I can do:
Select * into #inserted from inserted
Set @SQLStr= 'Select * into [TMPIns' + @newID + '] from #inserted'
Exec (@SQLStr)
But I don't want to use TempDB as these tables can become big and I also feel that it is redundant. Is there a way to avoid the creation of #inserted?
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Dec 2, 2006
Is there any benefit in creating seperate file groups for a partitionedtable on a multi-processor server with RAID5 and 1 Logical Drive?
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May 8, 2013
we planning to create partitioning on existing tables. The partitioning is on date column, there should be one partition for each year.
Creating of new partitions should be automated, and also we dont have any plans of archiving old data, all we want is that new partition creation should be automated.
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May 9, 2014
The SQL CAT team's recommendation is to avoid partitioning dimension tables: URL.....I have inherited a dimension table that has almost 3 billion rows and is 1TB and been asked to look at partitioning and putting maintenance in place, etc.I'm not a DW expert so was wondering what are the reasons to not partition dimensions?
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Jun 17, 2014
I have a question about partitions in both SQL Server table and Tabular Model. I started to use Tabular Model recently.
I need to partition a table that collects daily rows for different clients.
The natural partition key is a combination of clientID+dateID (something like CL-YYYYMMDD)
I created a configuration table with a primary key PartitionID IDENTITY(1,1) , that contains also the field clientID and dateID
Every day I add a new row in it and I get a partitionID for the new client and date
Then I created a partitioned fact table using PartitionID as the partition field, using the partition function and the partition schema as well.
The daily client data is inserted in the partitioned table using the partitionID
Everything works fine, and the data are loaded correctly into the partitioned fact table.
Then I created a Tabular Model where the fact table is the partitioned table, and I created tabular model partitions using something like "select <field list> from PartitionedTable where partitionID = <partitionID>"
In this way, every day I load partitioned data in both sql server and tabular model. I have two dimensions, client and calendar
Now my question is: when I browse the Tabular Model, and I'm selecting a specific dimension date and dimension client, am I using the partitionID index correctly?
Or should I put in the tabular model partition query something like "select <field list> from PartitionedTable where clientID = <clientID> and dateID = <dateID>"? In this case is still working the partitionID index? How can I check it?
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Oct 7, 2015
I have a requirement of table partitioning. we have 10 years of data on a table which is 30 billion up rows on 2005 server we are upgrading it to 2014. we have to keep 7 years of data. there is no keys on table or date column. since its a huge amount of data and many users its slow down the process speed. we are thinking to do partition on 7 years for Quarterly based. but as i said there is no date column on table we have to use reference table to get date. is there a way i can do the partitioning with out adding date column on table? also does partition will make query faster?
I have think three ways to do it.
1. leave as it is.
2. 7 years partition on one server
3. 3 years partition on server1 and 4 years partition on server2 (for 4 years is snapshot better?)
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Sep 21, 2015
Can we pass dynamic values while pivoting?
Here is example
Declare @a date, @b date
set @a='2015-09-08 22:19:29.330'
set @b='2015-09-17 22:19:29.330'
create table #DateTemp(Full_Date_Text_YYYY_MM_DD datetime,Full_Date date)
insert into #DateTemp(Full_Date_Text_YYYY_MM_DD,Full_Date)
select '2015-09-09 00:00:00.000','2015-09-09'
[Code] ......
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Mar 27, 2008
i 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.
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Nov 14, 2000
Hi,
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?
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Jun 16, 2008
i 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...
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Apr 24, 2007
Hi,
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
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Dec 13, 2007
Hi 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..
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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
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Mar 7, 2008
Hello frnds....what does mean by this ?
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Nov 25, 2013
I am trying to pivot some data as you would normally however I am trying to also group the pivot into three sub column groups too.
Basically the scenario is that I have three sub groups Budget, Person, RenewalDate for each Service (Service being the pivot point). So for each unique service I want to display the budget person and renewal date for each service by company.
I have created two tables to illustrate the base data and the required output.
How to do this dynamically because the number of Services is unknown, i.e. it could be 4 Services or 20, each with three sub columns, budget, person and renewal date.
Please find code below. It should be quite self explanatory as to what I am trying to do.
IMPORTANT:
1. I really need it to be dynamic
2. the Services are not standardised names, they are numbered for illustration purposes only, they vary in naming convention.
create table #BaseData
(
Company nvarchar(100),
Person nvarchar(50),
[Service] nvarchar(100),
Budget int,
RenewalDate datetime
)
[Code] .....
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Jul 2, 2015
I am creating a dynamic query where i am appending a where clause something like -
IF (@CurCaptureDate IS NOT NULL)
SET @where_clause = @where_clause + CHAR(10) + 'AND CD.CaptureDate = ' + @CurCaptureDate
PS - CD.CaptureDate is datetime and @CurCaptureDate is also datetime
but when executing , it gives this error - Msg 241, Level 16, State 1, Line 169 Conversion failed when converting date and/or time from character string.
i am not able to use convert here with these quotes.
i tried this - SET @where_clause = @where_clause + CHAR(10) + 'AND CD.CaptureDate = ' + CONVERT(VARCHAR(25),@CurCaptureDate )
but it makes it to -
AND CD.CaptureDate = Jul 19 2014 12:00AM. I would need the date in quotes.
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Sep 16, 2015
I have a table with the following data;
CREATE TABLE #Tab (Data Varchar(100))
INSERT INTO #Tab (Data)
Select 'Apple=5,Orange=10,Banana=11' UNION ALL
Select 'Apple=10,Orange=1033,Banana=0' UNION ALL
Select 'Apple = 120,Orange = 1,Banana = 112'
Select * from #Tab
How do I replace every value before the '=' but leave the comma.
Here is what the final output should look like
CREATE TABLE #TabFinal (Data Varchar(100))
INSERT INTO #TabFinal (Data)
Select 'Apple,Orange,Banana' UNION ALL
Select 'Apple,Orange,Banana' UNION ALL
Select 'Apple,Orange,Banana'
Select * from #TabFinal
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Oct 11, 2006
Hello,
I have a Sql Server 2005 database with many tables, each with millions of records within them.
They all have a Receive Date field, with records going back 10 years or so.
What would be the best way to partition it? I was thinking of partitioning them by years, but that would give me 10+ partitions -- would that be alot of overhead?
~Le
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