I have a partitioned view sitting over several tables and I'm slowly
approaching the 256 number. Can anybody confirm if there is such a
limit for the maximum number of tables that a partitioned view can
hold?
If this is true, does anybody have any suggestions or ideas to work
around this max limit?
TIA!
I have some Partitioned Views and on all queries using a table for the in clause, table elimination isn't happening.
Check Constraint is on the oid column
This works as expected, only goes to 2 tables;
SELECT *
FROM view_oap_all
WHERE oid IN ( '05231416529481', '06201479586431' )
This works as expected, only goes to 2 tables;
SELECT *
FROM view_oap_all
WHERE oid IN ( SELECT oid
FROM owners
WHERE oid IN ( '05231416529481', '06201479586431' ) )
This is checking all tables (headingnames are unique), ive tried this for the last 3 hours on many different tables containing the oid column.
Unless I write the oid as in the above queries it just doesn't work.
SELECT *
FROM view_oap_all
WHERE oid IN ( SELECT oid
FROM owners
WHERE headingname = 'TestSystem' )
I have a few databases that are using Partitioned Views in order to manage the table sizes and they all work well for our purposes. Recently I noticed a table that had grown to 400+ million rows and want to partition it as well, so I went about creating new base tables based on the initial table's structure, just adding a column to both table and primary key to be able to build a Partitioned View on them.The first time around, on a test system, everything worked flawlessly but when I put the same structure in place on the production system I get the dreaded "UNION ALL view 'DBName.dbo.RptReportData' is not updatable because the primary key of table '[DBName].[dbo].[RptReportData_201405]' is not included in the union result. [SQLSTATE 42000] (Error 4444)" error.
I have searched high and low and everything I see points to a few directives in order for a UNION ALL view to be updatable:
- Need a partitioning column that is part of the primary key
- Need a CHECK constraint that make the base tables exclusive, i.e. data cannot belong to more than one table
- Cannot have IDENTITY or calculated columns in the base tables
- The INSERT statement needs to specify all columns with actual values, i.e. not DEFAULT
Well, according to me, my structure fulfills these conditions but the INSERT fails anyway. CREATE scripts below scripted from SQL Server. I only modified them to be on a single row - it is easier to verify that they are identical in a text editor that way.
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
[code]....
Hi,
I've starting to explore the Distributed Partitoned Views, in order to use it in the next project, and I've found the article:
"MS SQL Server Distributed Partitioned Views"
By Don Schlichting
I came across the following problem:
While running sample:
USE test
GO
CREATE VIEW AllAuthors
AS
SELECT *
FROM AuthorsAM,
TEST1.test.dbo.AuthorsNZ
GO
I got the error message:
Server: Msg 4506, Level 16, State 1, Procedure AllAuthors, Line 5
Column names in each view or function must be unique. Column name 'au_lname' in view or function 'AllAuthors' is specified more than once.
Could anyone please explain? Can't i use the same column names in both tables?
Regards,
Yifat
I would like to break up a very large table into about ten smaller ones. With partitioning to be efficient the columns in the check constraint need to be used when accessing the view. The problem is the table has a composite primary key made up of LocationID/ProductID. With another composite index on ProductID/LocationID. This is accessed both ways from our applications.
I would like to partition the table by LocationID. But then when called by ProductID a scan of all tables in the view would have to be done.
In Oracle there is something called a global index that would solve this. Is there anything similar in SQL Server or does anybody have a work around?
Thanks,
Rob
Hello,I have a large set of data that I have set up as a partitioned view.The view is partitioned by a datetime column and the individual tableseach represent one month's worth of data. I need to keep at least twoyear's worth of data at all times, but after two years I can archivethe data. A sample of the code used is below. It is simplified forspace reasons.My question is, how do other people maintain the database in this typeof scenario? I could create all of the tables necessary for the nextyear and then go through that at the end of each year (archive tablesover two years, add new tables, and change the view), but I was alsothinking that I might be able to write a stored procedure that runsonce a month and does all three of those tasks automatically. It seemslike a lot of dynamic SQL code though for something like that.Alternatively, I could write VB code to handle it in a DTS package.So, my question again is, how are others doing it? Any suggestions?Thanks!-Tom.CREATE TABLE [dbo].[Station_Events_200401] ([event_time] [datetime] NOT NULL ,[another_column] [char] (8) NOT NULL )GOCREATE TABLE [dbo].[Station_Events_200402] ([event_time] [datetime] NOT NULL ,[another_column] [char] (8) NOT NULL )GOCREATE VIEW Station_EventsASSELECT event_time,another_columnFROM Station_Events_200401UNION ALLSELECT event_time,another_columnFROM Station_Events_200402GO
View 3 Replies View RelatedHi everyone,
I have some doubts about distributed partitioned views.
When we create a distributed partitioned view whcih include three server, do we have tocreate this same distributed partitioned view in that three server in order to make each server to see adn especially modify it ?
Thanks
Hi, I am using sql2000 ent edition. I have a partitioned view based on 8 tables. My selects and inserts are fine. But, when I run a delete on the view based on a query on the paritioned column, I get a "Transaction (Process ID 149) was deadlocked and has been chosen as a victim".
I looked at the query plan and it was showing a parallel query on all the underlying tables. So, I put the Option(maxdop 1), using only one processor and the delete worked fine.
Does anybody know why? is parallel query create deadlocks? is there any known problems with deletes on partitioned views?
same question for updates. I think I have the same problem for updates.
Any help will be useful.
thanks!!
From BOL...
CHECK constraints are not needed for the partitioned view to return the correct results. However, if the CHECK constraints have not been defined, the query optimizer must search all the tables instead of only those that cover the search condition on the partitioning column. Without the CHECK constraints, the view operates like any other view with UNION ALL. The query optimizer cannot make any assumptions about the values stored in different tables and it cannot skip searching the tables that participate in the view definition.
Then why am I getting index scans on my partitioning column on tables that fail the search value based on their check constraint?
Not looking for an answer because I know the query optimizer is a fickle b*tch and I did not post any code, but I needed to rant.
Thanks in advance in reading this post ! I'm facing a situation in sql server 2000 sp4 with partitioned views.
I have a partition views that joins about 10 tables, in each table there is a check constraint.
For example, if a exec a select count(*) from VIEW where col1 = '20080101' , it goes for the table that has data for '20080101' .
If I exec a select col1,col2,col3,col4 from VIEW where col1='20080101', it goes to all tables and make an index seek.
I want the beaviour of query 1, beause it is just looking on 1 table and not one the 10.
Thanks in advance !
someone please tell me if i can bcp or dts data in to partition views
it is failing with the error the bulk operation does not support this
SQL 2008R2, Standard on Windows 2008R2 Enterprise.I have implemented a set of local partitioned views to facilitate multi-threading in one of our applications.Testing with SQL and the insert, update, Delete all work fine. However the inserts from SSIS are Bulk and then fail.According to all I have read I should be able to add "instead of Trigger" for the insert and it should work fine. URL....
I have created instead of triggers for insert and delete and again they work fine when I test them with T-SQL but fail in the SSIS package. The error message is that the view is not updateable.
/*problem: Trying to get partitioned views to "prune" unneededpartitions fromselect statements against the partitioned view. There are 5partitionedtables. Each with a check constraint based on a range of formula_idcolumn.Test: Run this script to create the 5 partitioned tables and thepartitioned view. Thenrun the explain plans on the select statements at the end of thescript and see that wecan only prune if we give a seemingly superfluous is not nullcriteria in addition tothe formula_id.Ideal: We want to only have to use the formula_id in the selectstatement to prune.*//*note: you may get errors on the drops first time run*/drop table dbo.cs_working_e2goCREATE TABLE dbo.cs_working_e2 (formula_id int NOT NULLCONSTRAINT formula_id_e14CHECK (formula_id between 1and 1000),submission_id int NOT NULL,node_id int NOT NULL,reference_year smallint NOT NULL,observation_period datetime NOT NULL,authority_flag tinyint NOT NULLCONSTRAINT ONE_DEFAULT3436DEFAULT 1CONSTRAINT Binary_flag_rule667CHECK (authority_flag IN(0, 1)),interpolated_flag tinyint NOT NULLCONSTRAINT ZERO_DEFAULT6926DEFAULT 0CONSTRAINT Binary_flag_rule668CHECK (interpolated_flag IN(0, 1)),observation_value decimal_datatype NOT NULL,time_created smalldatetime NOT NULLCONSTRAINTCURRENT_DATE_DEFAULT1807DEFAULT getdate(),CONSTRAINT XPKcs_working_e2PRIMARY KEY NONCLUSTERED (formula_id, submission_id,node_id, reference_year, observation_period)--ON "INDEXES")--ON "WORKING"goCREATE UNIQUE CLUSTERED INDEX XAK1cs_working_e2 ON dbo.cs_working_e2(submission_id ASC,formula_id ASC,node_id ASC,authority_flag ASC,observation_period ASC,reference_year ASC,observation_value ASC)goCREATE INDEX XIE1cs_working_e2 ON dbo.cs_working_e2(node_id ASC,authority_flag ASC,formula_id ASC,observation_period ASC,reference_year ASC,observation_value ASC)--ON "INDEXES"godrop table dbo.cs_working_indexes2goCREATE TABLE dbo.cs_working_indexes2 (formula_id int NOT NULLCONSTRAINT formula_id_indexes14CHECK (formula_id between7001 and 9000),submission_id int NOT NULL,node_id int NOT NULL,reference_year smallint NOT NULL,observation_period datetime NOT NULL,authority_flag tinyint NOT NULLCONSTRAINT ONE_DEFAULT3437DEFAULT 1CONSTRAINT Binary_flag_rule669CHECK (authority_flag IN(0, 1)),observation_value decimal_datatype NOT NULL,interpolated_flag tinyint NOT NULLCONSTRAINT ZERO_DEFAULT6927DEFAULT 0CONSTRAINT Binary_flag_rule670CHECK (interpolated_flag IN(0, 1)),time_created smalldatetime NOT NULLCONSTRAINTCURRENT_DATE_DEFAULT1808DEFAULT getdate(),CONSTRAINT XPKcs_working_indexes2PRIMARY KEY NONCLUSTERED (formula_id, submission_id,node_id, reference_year, observation_period)--ON "INDEXES")--ON "WORKING"goCREATE UNIQUE CLUSTERED INDEX XAK1cs_working_indexes2 ONdbo.cs_working_indexes2(submission_id ASC,formula_id ASC,node_id ASC,authority_flag ASC,observation_period ASC,reference_year ASC,observation_value ASC)goCREATE INDEX XIE1cs_working_indexes2 ON dbo.cs_working_indexes2(node_id ASC,authority_flag ASC,formula_id ASC,observation_period ASC,reference_year ASC,observation_value ASC)--ON "INDEXES"godrop table dbo.cs_working_other2goCREATE TABLE dbo.cs_working_other2 (formula_id int NOT NULLCONSTRAINT formula_id_other14CHECK (formula_id >= 9001),submission_id int NOT NULL,node_id int NOT NULL,reference_year smallint NOT NULL,observation_period datetime NOT NULL,authority_flag tinyint NOT NULLCONSTRAINT ONE_DEFAULT3438DEFAULT 1CONSTRAINT Binary_flag_rule671CHECK (authority_flag IN(0, 1)),observation_value decimal_datatype NOT NULL,interpolated_flag tinyint NOT NULLCONSTRAINT ZERO_DEFAULT6928DEFAULT 0CONSTRAINT Binary_flag_rule672CHECK (interpolated_flag IN(0, 1)),time_created smalldatetime NOT NULLCONSTRAINTCURRENT_DATE_DEFAULT1809DEFAULT getdate(),CONSTRAINT XPKcs_working_other2PRIMARY KEY NONCLUSTERED (formula_id, submission_id,node_id, reference_year, observation_period)--ON "INDEXES")--ON "WORKING"goCREATE UNIQUE CLUSTERED INDEX XAK1cs_working_other2 ONdbo.cs_working_other2(submission_id ASC,formula_id ASC,node_id ASC,authority_flag ASC,observation_period ASC,reference_year ASC,observation_value ASC)goCREATE INDEX XIE1cs_working_other2 ON dbo.cs_working_other2(node_id ASC,authority_flag ASC,formula_id ASC,observation_period ASC,reference_year ASC,observation_value ASC)--ON "INDEXES"godrop table dbo.cs_working_p1q12goCREATE TABLE dbo.cs_working_p1q12 (formula_id int NOT NULLCONSTRAINT formula_id_p1q114CHECK (formula_id between3001 and 7000),submission_id int NOT NULL,node_id int NOT NULL,reference_year smallint NOT NULL,observation_period datetime NOT NULL,authority_flag tinyint NOT NULLCONSTRAINT ONE_DEFAULT3439DEFAULT 1CONSTRAINT Binary_flag_rule673CHECK (authority_flag IN(0, 1)),interpolated_flag tinyint NOT NULLCONSTRAINT ZERO_DEFAULT6929DEFAULT 0CONSTRAINT Binary_flag_rule674CHECK (interpolated_flag IN(0, 1)),observation_value decimal_datatype NOT NULL,time_created smalldatetime NOT NULLCONSTRAINTCURRENT_DATE_DEFAULT1810DEFAULT getdate(),CONSTRAINT XPKcs_working_p1q12PRIMARY KEY NONCLUSTERED (formula_id, submission_id,node_id, reference_year, observation_period)--ON "INDEXES")--ON "WORKING"goCREATE UNIQUE CLUSTERED INDEX XAK1cs_working_p1q12 ONdbo.cs_working_p1q12(submission_id ASC,formula_id ASC,node_id ASC,authority_flag ASC,observation_period ASC,reference_year ASC,observation_value ASC)goCREATE INDEX XIE1cs_working_p1q12 ON dbo.cs_working_p1q12(node_id ASC,authority_flag ASC,formula_id ASC,observation_period ASC,reference_year ASC,observation_value ASC)--ON "INDEXES"godrop table dbo.cs_working_pq2goCREATE TABLE dbo.cs_working_pq2 (formula_id int NOT NULLCONSTRAINT formula_id_pq14CHECK (formula_id between1001 and 3000),submission_id int NOT NULL,node_id int NOT NULL,reference_year smallint NOT NULL,observation_period datetime NOT NULL,authority_flag tinyint NOT NULLCONSTRAINT ONE_DEFAULT3440DEFAULT 1CONSTRAINT Binary_flag_rule675CHECK (authority_flag IN(0, 1)),interpolated_flag tinyint NOT NULLCONSTRAINT ZERO_DEFAULT6930DEFAULT 0CONSTRAINT Binary_flag_rule676CHECK (interpolated_flag IN(0, 1)),observation_value decimal_datatype NOT NULL,time_created smalldatetime NOT NULLCONSTRAINTCURRENT_DATE_DEFAULT1811DEFAULT getdate(),CONSTRAINT XPKcs_working_pq2PRIMARY KEY NONCLUSTERED (formula_id, submission_id,node_id, reference_year, observation_period)--ON "INDEXES")--ON "WORKING"goCREATE UNIQUE CLUSTERED INDEX XAK1cs_working_pq2 ONdbo.cs_working_pq2(submission_id ASC,formula_id ASC,node_id ASC,authority_flag ASC,observation_period ASC,reference_year ASC,observation_value ASC)goCREATE INDEX XIE1cs_working_pq2 ON dbo.cs_working_pq2(node_id ASC,authority_flag ASC,formula_id ASC,observation_period ASC,reference_year ASC,observation_value ASC)--ON "INDEXES"go----- create view ---------drop view cs_working2goCREATE VIEW cs_working2 (submission_id, node_id, reference_year,observation_period, formula_id, observation_value, interpolated_flag,time_created, authority_flag) ASSELECT we.submission_id, we.node_id, we.reference_year,we.observation_period, we.formula_id, we.observation_value,we.interpolated_flag, we.time_created, we.authority_flagFROM cs_working_e2 weunion allSELECT wo.submission_id, wo.node_id, wo.reference_year,wo.observation_period, wo.formula_id, wo.observation_value,wo.interpolated_flag, wo.time_created, wo.authority_flagFROM cs_working_other2 wounion allSELECT wpq.submission_id, wpq.node_id, wpq.reference_year,wpq.observation_period, wpq.formula_id, wpq.observation_value,wpq.interpolated_flag, wpq.time_created, wpq.authority_flagFROM cs_working_pq2 wpqunion allSELECT wp1q1.submission_id, wp1q1.node_id, wp1q1.reference_year,wp1q1.observation_period, wp1q1.formula_id, wp1q1.observation_value,wp1q1.interpolated_flag, wp1q1.time_created, wp1q1.authority_flagFROM cs_working_p1q12 wp1q1union allSELECT wi.submission_id, wi.node_id, wi.reference_year,wi.observation_period, wi.formula_id, wi.observation_value,wi.interpolated_flag, wi.time_created, wi.authority_flagFROM cs_working_indexes2 wigo--- sample selects against partitioned view -----/*--run explain plan here and see all 5 partitions being pulledselect * from cs_working--run explain plan here and see just the 1 partitionselect * from cs_working_e2--run explain plan and see this is not pruning to the needed partitionselect * from cs_workingwhere formula_id = 1--run explain plan and see it is now pruning to the needed partitionselect * from cs_workingwhere formula_id = 1and submission_id is not null--run explain plan and see it is now pruning to the needed partition,tooselect * from cs_workingwhere formula_id = 1and observation_value is not null*/
View 1 Replies View RelatedI'm trying to do some researh on the use of SQL's DPV. I'm looking for feedback from people who've actually done this production to know more about the design challenges and level of added administration required. Any information will be much appreciated. Thanks.
aK
We have are SQL 2014 Standard edition, I have a situation where-in I plan to partition a table now since table partition is not supported in standard version I thought about Partitioned views however now I am stuck where I cant make the view writable because of the identity column in the base table.
Do I have any other option in this case?
Hi All,
My database's design is set out here. In summary, I'm trying to model a Stock Exchange for a Technical Analysis application written using Visual C++. In order to create the hierachy I'm using a Nested Set Model. I'm now trying to write code to add and delete equities (or, more generically, nodes) to the database using a form presented to the user in my application. I have example SQL code to create the necessary add and delete procedures that calculate the changes to the values in the lft and rgt columns, but these examples focus around a single table, where as my design aggregates rows from multiple tables using UNION ALL:
Code Snippet
CREATE VIEW vw_NSM_DBHierarchy -- Nested Set Model Database Hierarchy
AS
SELECT clmStockExchange, clmLeft, clmRight FROM tblStockExchange_
UNION ALL
SELECT clmMarkets, clmLeft, clmRight FROM tblMarkets_
UNION ALL
SELECT clmSectors, clmLeft, clmRight FROM tblSectors_
UNION ALL
SELECT clmEPIC, clmLeft, clmRight FROM tblEquities_
Essentially, I'm trying to create an updateable view but I receive the error "UNION ALL View is not updatable because a partitioning column was not found". I suspect that my design in wrong or lacks and this problem is highlighting the design flaws so any suggestions would be greatly appreciated.
I've been using partitioned views in the past and used the check constraint in the source tables to make sure the only the table with the condition in the where clause on the view was used. In SQL Server 2012 this was working just fine (I had to do some tricks to suppress parameter sniffing, but it was working correct after doing that). Now I've been installing SQL Server 2014 Developer and used exactly the same logic and in the actual query plan it is still using the other tables. I've tried the following things to avoid this:
- OPTION (RECOMPILE)
- Using dynamic SQL to pass the parameter value as a static string to avoid sniffing.
To explain wat I'm doing is this:
1. I have 3 servers with the same source tables, the only difference in the tables is one column with the server name.
2. I've created a CHECK CONSTRAINT on the server name column on each server.
3. On one of the three server (in my case server 3) I've setup linked server connections to Server 1 and 2.
4. On Server 3 I've created a partioned view that is build up like this:
SELECT * FROM [server1].[database].[dbo].[table]
UNION ALL SELECT * FROM [server2].[database].[dbo].[table]
UNION ALL SELECT * FROM [server3].[database].[dbo].[table]5. To query the partioned view I use a query like this:
SELECT *
FROM [database].[dbo].[partioned_view_name]
WHERE [server_name] = 'Server2'
Now when I look at the execution plan on the 2014 environment it is still using all the servers instead of just Server2 like it should be. The strange thing is that SQL 2008 and 2012 are working just fine but 2014 seems not to use the correct plan.
Yes, I do know what this means and why the error is thrown but this is not my question.
I have two servers that are both running Windows Server 2003 and SQL Server 200 SP3. Below are the results from both servers using @@version
Sever 1 (BB)
Microsoft SQL Server 2000 - 8.00.760 (Intel X86)
Dec 17 2002 14:22:05
Copyright (c) 1988-2003 Microsoft Corporation
Developer Edition on Windows NT 5.2 (Build 3790: Service Pack 1)
Server 2 (Genesis)
Microsoft SQL Server 2000 - 8.00.760 (Intel X86)
Dec 17 2002 14:22:05
Copyright (c) 1988-2003 Microsoft Corporation
Developer Edition on Windows NT 5.2 (Build 3790: Service Pack 1)
These servers are identical or so it seems. I've got a real ugly query that uses views and a derived table to get results. The problem is the 256 limit message only comes up on one server and on the other (Genesis) the query runs fine. I get the error though it reads a 260 limit on a box with SP4 applied. I've also run the query on a box that is Windows 2003, sql2k and sp4 and the query runs but not on a similar server here. This is all very odd. Please note that the database structure, views, etc are all exactly the same as far as I know.
Any suggestions? There seems to be no pattern between versions of Windows and/or SP levels.
I want to find a way to get partition info for all the tables in all the databases for a server. Showing database name, table name, schema name, partition by (maybe; year, month, day, number, alpha), column used in partition, current active partition, last partition (for date partitions I want to know if the partition goes untill 2007, so I can add 2008)
all I've come up with so far is:
Code Block
SELECT distinct o.name From sys.partitions p
inner join sys.objects o on (o.object_id = p.object_id)
where o.type_desc = 'USER_TABLE'
and p.partition_number > 1
I'm running sqlserver 2000 enterprise edition on windows 2000 and I need
to know, how to create partition table. Please give me a small partition table example.
Thanks,
Ranjan
hello
i want to ask if the insertion of a record into a partion is slower than insertion it into a non partitioned table or not?
cuz sql has to decide to wich partion the record has to insert according to the partitioning key and is this decesion process is making insertion slower ?
Hello;
I have inserted 200m rows into a partitioned table using SSIS, the table has a [RecID] column which is an identity(1,1) primary key.
When I open the table, I see that RecId doesn't start from 1(its not ordered), it starts from 889823. But, when I query the table for RecID = 1, I can see that row.
Is it a typical behavior of a partitioned table? Or am I doing something wrong?
This is the query I used to create the partitioned table.
create partition function pf_LoadDate(Datetime)
as range right for
values ('01/01/1997','01/01/1999','01/01/2001','01/01/2002','01/01/2003',
'01/01/2004','01/01/2005','01/01/2006','01/01/2007')
--------------
create partition Scheme ps_RecBuyLoadDateScheme
as partition pf_LoadDate
to (FG1,FG1,FG1,FG1,FG2,FG2,FG2,FG3,FG3,FG3)
I'll appreciate any help.
Prok
Hi,
Has anyone had any problems on one row updates on a table where you have defined horizontal and vertical partitioning of the data to be replicated?
When I execute an update clause that modifies just one row the log reader misses the modification and it does not get replicated to the other databases.
If I do the same update clause but on several rows then all the modifications are read by the log reader and the replication task goes ok.
What might be wrong?
-janne
Hi all,
We have a table with 15 Partitions in SQL Server.Can i write a stored procedure or an SQL statement just to truncate a particular partition by passing the partition name.
Any Suggestions??????????
Thanks
Chow.
I'm having a problem creating a partitioned table with a filestream column. I'm getting error: Cannot create table 'MyTable' since a partition scheme is not specified for FILESTREAM data
CREATE TABLE MyTable
(
IndexID BIGINT IDENTITY(1,1),
PartitionID SMALLINT,
IndexGUID UNIQUEIDENTIFIER NOT NULL ROWGUIDCOL
[code]...
I actually managed to get the table created. The table below gets created. I had to specifically indicate that the unique constraint is on [PRIMARY] (non-partitioned) and create a partition scheme in the filestram filegroup. However my problem now is with partition switching. I successfully created a non-partitioned staging table identical to the partitioned table, but the switching operation doesn't work.
CREATE TABLE MyTable
(
IndexID BIGINT IDENTITY(1,1),
PartitionID SMALLINT,
IndexGUID UNIQUEIDENTIFIER NOT NULL ROWGUIDCOL
CONSTRAINT DF_MyTable_IndexGUID DEFAULT (NEWID())
[code]...
I get error:
'ALTER TABLE SWITCH' statement failed. The table 'MyTable' is partitioned while index 'UQNP_MyTable_IndexGUID' is not partitioned.
However, I can't drop the non-partitioned unique index on MyTable as it violates the filestream, and would make the table unusable.
I began with a partition function as follows:
CREATE PARTITION FUNCTION [TimeTicksRangePFN](bigint) AS RANGE RIGHT FOR VALUES (633294720000000000, 633320640000000000, 633347424000000000, 633374208000000000, 633399264000000000)
These numbers happen to correspond to the dates 11/1/7, 12/1/7, 1/1/8, 2/1/8 and 3/1/8 in ticks respectively.
I began with a partition scheme as follows:
CREATE PARTITION SCHEME [TimeTicksRangePScheme] AS PARTITION [TimeTicksRangePFN] TO ([FG_xxx_EventArchive00001], [FG_xxx_EventArchive00002], [FG_xxx_EventArchive00003], [FG_xxx_EventArchive00004], [FG_xxx_EventArchive00005], [PRIMARY])
While running my “sliding window script� , which I hoped would 1) roll off the oldest partition of my EventArchive table and 2) add a new partition with a tick boundary that equates to 3/5/8, I get an error related to my switch out table's index, the same table's Filegroup and Primary.
After getting the error, I scripted the partition function as a create in mgt studio and got…
CREATE PARTITION FUNCTION [TimeTicksRangePFN](bigint) AS RANGE RIGHT FOR VALUES (633320640000000000, 633347424000000000, 633374208000000000, 633399264000000000, 633402720000000000)
...which looks like what I had intended cuz the last boundary is the tick representation of 3/5/8 and the oldest has rolled off
scripting the scheme produced...
CREATE PARTITION SCHEME [TimeTicksRangePScheme] AS PARTITION [TimeTicksRangePFN] TO ([FG_xxx_EventArchive00001], [FG_xxx_EventArchive00003], [FG_xxx_EventArchive00004], [FG_xxx_EventArchive00005], [PRIMARY], [FG_xxx_EventArchive00001])
which looks nothing like what I intended, I thought I’d end up with …00002,…00003,…00004,…00005,…00001,PRIMARY
the script steps that seem most relevant start at the 5th step as follows...
5) creates table [dbo].Switch on the switch out filegroup with columns, PK and indexes matching exactly those of [dbo].EventArchive
6) switches partition 1 of [dbo].EventArchive to [dbo].Switch
7) ALTER PARTITION FUNCTION TimeTicksRangePFN() MERGE RANGE (633294720000000000) --this was the oldest date corresponding to 11/1/7
8) truncates [dbo].Switch
9) drops all indexes on [dbo].Switch except a clustered index (IX_TimeTicks), leaves PK constraint alone
10) ships the new data whose values range from 3/1/8 to less than 3/5/8 to [dbo].Switch and deletes them from their source
11) recreates all non clustered indexes on [dbo].Switch
12)ALTER TABLE [dbo].[Switch] WITH CHECK ADD CONSTRAINT RangeCK CHECK ([TimeTicks] < the number of ticks represented by 3/5/8)
13)ALTER PARTITION SCHEME TimeTicksRangePScheme NEXT USED [FG_xxx_EventArchive00001] --fg isnt really hardcoded
14)ALTER PARTITION FUNCTION TimeTicksRangePFN() SPLIT RANGE (the number of ticks represented by 3/5/8)
15)ALTER TABLE [dbo].[Switch] SWITCH TO [dbo].[EventArchive] PARTITION 5
step 15 is the one that fails with message "ALTER TABLE SWITCH statement failed. index 'xxx.dbo.Switch.IX_TimeTicks' is in filegroup 'FG_xxx_EventArchive00001' and partition 5 of index 'xxx.dbo.EventArchive.IX_TimeTicks' is in filegroup 'PRIMARY'.
I have a very large table that I am trying to partition and use to reduce maintenance overhead as well as improve performance. The table contains about 12 years worth of data but only the most recent years is inserted/updated/deleted from thru the app. I created partitions on a computed(persisted) column which holds the "year" value derived from a date column. I have created the partitions with all the default set options, and the stored procedure which performs the delete against this table also was created with no special set options(basically database/session default). Yet, every time I try to run the proc to delete data thru the app, I get this error:
Msg 1934, Level 16, State 1, Procedure xxxx, Line 118
DELETE failed because the following SET options have incorrect settings: 'ANSI_WARNINGS'. Verify that SET options are correct for use with indexed views and/or indexes on computed columns and/or filtered indexes and/or query notifications and/or XML data type methods and/or spatial index operations.
I've tried setting ANSI_WARNINGS on and off when creating the proc, inside the proc etc.., its always the same error whatever I set the option to.
Is there a way to figure out if a table is partitioned by month/day in SQL.Â
View 2 Replies View RelatedHi All,
I am new to SQL Server. I have a table which is paritioned by Value (String). Can I write a stored procedure or an SQL Statment to truncate a particular partition in SQL Server. Please suggest me on this.
Thanks
Chow
Hello,
The illustration below is for a customer dedupification project.
The Source file, containing customer name and address records, is conditionally split based on 7 ranges of substring(city,1,2) to distribute the load across 7 different threads for parallelization. Each customer record in the source file
is looked up against a reference table named Location_Stage for its existence using the Fuzzy Lookup
transformation.
The reference table Location_Stage has around 10 miilion+ records. The source file would normally have around 1 million
records.
I am wondering :
- if it would be possible to partition the Match Index of the reference table (NOT the reference table) into
7 partitions based on 7 ranges of substring(city,1,2) and maintain these partitions on different drives?
- if it is possible to specify a particular partition to be used by a FzLkup transformation?
- if the partitioning approach will improve the performance of the Fuzzy Lookups?
Source File Feed
|
Split data into 7 groups based on substring(city,1,2)
|
------------------------------------------------------------------------------------------------------------------------------------------
| | | | | | |
UnionAll UnionAll UnionAll UnionAll UnionAll UnionAll UnionAll
| | | | | | |
FzLkup FzLkup FzLkup FzLkup FzLkup FzLkup FzLkup
| | | | | | |
Split Split Split Split Split Split Split
| | | | | | |
------------- -------------- -------------- -------------- -------------- -------------- --------------
| | | | | | | | | | | | | |
<- - - - - - - Write the Canonicals and Dupes from each of these splits into database - - - - - - - - ->
Please advice.
Thanks.
I am using SQL Server 2000, SP3.I created an updatable partitioned view awhile ago and it has beenrunning smoothly for some time. The partition is on a DATETIME columnand it is partitioned by month. Each month a stored procedure isscheduled that creates the new month's table, and alters the view toinclude it. Again... working like a charm for quite some time.This past weekend I moved some of the first tables onto a new filegroup. I did this through Enterprise Manager, by going into designmode for the table, then going into the properties for the table andchanging the file group there as well as in all of the indexes. Nowthe partitioned view is no longer updatable. It gives the errormessage: "UNION ALL view '<view name>' is not updatable because apartitioning column was not found."I have extracted the DDL for all of the partition tables and comparedthem and they all look the same. I checked and then double-checked theCHECK constraints to make sure that they were all valid and they are.If I remove the tables that I moved to the new file group from theview, then it is once again updatable, but when I put them back in itfails again.Any ideas? If you would like samples of the code then I can send italong, but it's rather large, so I have not included it here.Thanks!Thomas R. Hummel
View 3 Replies View RelatedI have a partition function as follows:
CREATE PARTITION FUNCTION [TimeTicksRangePFN](bigint) AS RANGE RIGHT FOR VALUES (633294720000000000, 633320640000000000, 633347424000000000, 633374208000000000, 633399264000000000)
These numbers happen to correspond to the dates 11/1/7, 12/1/7, 1/1/8, 2/1/8 and 3/1/8 in ticks respectively.
I have a partition scheme as follows:
CREATE PARTITION SCHEME [TimeTicksRangePScheme] AS PARTITION [TimeTicksRangePFN] TO ([FG_xxx_EventArchive00001], [FG_xxx_EventArchive00002], [FG_xxx_EventArchive00003], [FG_xxx_EventArchive00004], [FG_xxx_EventArchive00005], [PRIMARY])
After running my €œsliding window script€? , which I wanted to switch out the lowest partition with, and add a new partition with a new tick boundary that equates to 3/5/8, I get an error saying that 1 of my switch out table€™s indexes is in filegroup 1 but partition 5€™s index of the same name is in PRIMARY. At this point the partition function looks like€¦
CREATE PARTITION FUNCTION [TimeTicksRangePFN](bigint) AS RANGE RIGHT FOR VALUES (633320640000000000, 633347424000000000, 633374208000000000, 633399264000000000, 633402720000000000) which looks like what I had intended cuz the last boundary is tick representation of 3/5/8 and the oldest has rolled off
and the scheme looks like€¦
CREATE PARTITION SCHEME [TimeTicksRangePScheme] AS PARTITION [TimeTicksRangePFN] TO ([FG_xxx_EventArchive00001], [FG_xxx_EventArchive00003], [FG_xxx_EventArchive00004], [FG_xxx_EventArchive00005], [PRIMARY], [FG_xxx_EventArchive00001]) which looks nothing like what I intended, I thought I€™d end up with €¦00002,€¦00003,€¦00004,€¦00005,€¦00001,PRIMARY
the relevant script steps are...
5) creates table [dbo].Switch on the switch out filegroup with columns, PK and indexes matching those of [dbo].EventArchive (allows default location for indexes)
6) switches partition 1 of [dbo].EventArchive to [dbo].Switch
7) ALTER PARTITION FUNCTION TimeTicksRangePFN() MERGE RANGE (633294720000000000)
8) truncates [dbo].Switch
9) drops all indexes on [dbo].Switch except a clustered index (IX_TimeTicks), leaves PK constraint alone
10) ships the new data whose values range from 3/1/8 to less than 3/5/8 to [dbo].Switch and deletes them from their source
11) recreates all non clustered indexes on [dbo].Switch
12)ALTER TABLE [dbo].[Switch] WITH CHECK ADD CONSTRAINT RangeCK CHECK ([TimeTicks] < the number of ticks represented by 3/5/8)
13)ALTER PARTITION SCHEME TimeTicksRangePScheme NEXT USED [FG_xxx_EventArchive00001]
14)ALTER PARTITION FUNCTION TimeTicksRangePFN() SPLIT RANGE (the number of ticks represented by 3/5/8)
15)ALTER TABLE [dbo].[Switch] SWITCH TO [dbo].[EventArchive] PARTITION 5
step 15 is the one that fails with message "ALTER TABLE SWITCH statement failed. index 'xxx.dbo.Switch.IX_TimeTicks' is in filegroup 'FG_xxx_EventArchive00001' and partition 5 of index 'xxx.dbo.EventArchive.IX_TimeTicks' is in filegroup 'PRIMARY'.
I have a query that has a left join with a large partitioned table. The partitioned table has 10s of millions of records, and each partition has about 100,000 records.
The left join is part of an insert that gets a column from the partitioned table, if the column exists. The query contains the partition ID and all other joined columns are part of a non-clustered index.
Through the profiler, I found that there were millions of reads and the execution plan was giving me a table scan on the partitioned table.
I changed the query to do the insert followed by an update with inner join. That did the trick, but it worries me that SQL Server 2014 behaves differently from 2012 or 2008R2, which can make upgrading very time consuming.