Synatax and Example of Materialized Views in SQL server?

Syntax and Example of Materialized Views in SQL server?

Also see
http://sqlperformance.com/2014/01/sql-plan/indexed-views-and-statistics
http://www.brentozar.com/archive/2013/11/what-you-can-and-cant-do-with-indexed-views/
Please Mark This As Answer if it helps to solve the issue Visakh ---------------------------- http://visakhm.blogspot.com/ https://www.facebook.com/VmBlogs

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Equivalent of Materialized Views in SQL Server

Hi
we are migrating Oracle Database to SQL Server 2012 and is looking for solution, equivalent to Materialized Views in Oracle.
we had tried to implement indexed View, but that was not possible, because the MVs have outer joins, subqueries, aggregate functions and also there is no column in it which can act as a Primary Key.
Please Help to get a solution for this issue.
Regards
Joyasree Mondal

>use tempdb
>drop table t
>go
>create table t(id int, constraint pk_t primary key (id))
>
>go
>insert into t(id)
>select top 1000 cast( cast( newid() as binary(4) ) as int)
>from sys.objects o, sys.columns c
>go 100
>
>
>select id
>from t with (index=pk_t, tablockx)
>
>
>select id
>from t with (index=pk_t, nolock)
Still the same order.
>> No, its always in the key order like I've shown here.
> You are extrapolating from a single example.
Actually, this information doesn't even come from my exampleS (there were quite a few so far). Its written in the article you posted here. My examples are meant to confirm that and explain why the ORDER BY clause is redundant in some cases.
> I have. ORDER BY in a view used to always return ordered results. Then it didn't.
Examples? References?
>GROUP BY without an ORDER BY used to always return ordered results. Then it didn't. Many queries have >change the result ordering when you get a parallel plan.
Now you finally admit ordered results would always be returned, even without an order by clause. We are in the right track it appears. The reason for this change of behavior is a variation in the logical operator used by the query optimizer, and not the
way the engine reads pages from disk.
In the beginning of times there was stream aggregate, an operator that would require its input to be sorted. And this is how a GROUP BY clause would ensure results were always ordered.
But then his ugly cousin came and messed things up. He doesnt need an ordered input so yeah, order would be random. AGAIN, there are still ways of enforcing order here, through query hints, without requiring an order by clause, so this changes nothing.
You have confirmed that for a given operator, results will always be ordered. Your own argument has, once again, proven my point.
> Right. But there are different _kinds_ of scans. An ordered scan, where SQL Server reads rows based on the logical order of the index is just one kind.
It only won't scan in key order (by scheduling reads) if you change the transaction isolation level and hope for the worse. Because the key order scan is the best performing way of reading pages, this behavior (although possible) wasan't even observed in
the example with NOLOCK/TABLOCK (known to cause allocation-order scans in larger tables) you posted above.
> Other kinds include the parallel scan, the reverse scan,
References?
> the merry-go-round scan,
Only applies to table scans, not indexes.
http://technet.microsoft.com/en-us/library/ms191475%28v=SQL.105%29.aspx
> And the allocation-order (or unordered) scan.
Only if you specify TABLOCK or NOLOCK query hints, which I haven't done. This is something that goes without saying, it's irrelevant to an indexed view scenario such as this one.
Some people have also said it will perform an allocation-order scan if the index is too fragmented in SQL Server 2005, but as of 2012 it (probably) won't, as I have shown here. There is also no document anywhere in the internet (you are free to search for
it), that would point us otherwise. If you have access to additional information, I would be more than happy if you could share it with us.
Reference: http://sqlmag.com/database-development/quaere-verum-clustered-index-scans-part-iii
> And don't take my word for it. Take Conor Cunningham's:
>If you need order in your query results, put in an ORDER BY. It's that simple. Anything else is like >riding in a car without a seatbelt.
>No Seatbelt - Expecting Order without ORDER BY
Again, with all due respect, did you read your own article? Did you read what I said earlier about having multiple I/O threads as a whole other situation? If you add new variables, OF COURSE the results will be different. Parallelism was disabled in the
server I performed these tests on, but still you can control this by query hints, and you can enforce execution plans by using plan gudes.
Its like I always say - it's always about the 0.001% of situations, the exceptions, rather than the general rule.
Tell Mr Connor to add MAXDOP 1 to his querys OPTION clause and see if results are still unordered lol
References:
http://msdn.microsoft.com/en-us/library/ms190417.aspx
http://msdn.microsoft.com/en-us/library/ms181714.aspx
http://technet.microsoft.com/en-us/library/ms188611%28v=sql.105%29.aspx
http://blogs.msdn.com/b/conor_cunningham_msft/archive/2008/08/27/no-seatbelt-expecting-order-without-order-by.aspx
Imagining uncontrollable factors that would get an ordered input to be retrieved in an unordered manner is one of SQL Server's myths. There are a whole other people around who think the same way because of some experiences they had when they didn't know
how to control the execution plan, and adding an order by clause is a very popular and easy shortcut to a complex problem. "In the worst cases it will just be redundant", they say. What they like to forget is that sorting has an often high cost,
and it can be avoided by taking advantage of indexes.

How do I use Primary Key and RowID in Materialized View Logs and MVs

How do I use Primary Key and RowID in Materialized View Logs and Materialized Views????
I donât understand in the Materalized View Logs the diference between Primary Key and RowID. Besides, I could choose both Primary Key and RowID.
When I have to use RowID?? Why?? And Primary Key??? And both, Primary Key and RowID????
Thank you very much!

Yes, I have already read it...
But for example I donât Understand:
This is the example 8-1
CREATE MATERIALIZED VIEW LOG ON products
WITH SEQUENCE, ROWID
(prod_id, prod_name, prod_desc, prod_subcategory, prod_subcat_desc, prod_
category, prod_cat_desc, prod_weight_class, prod_unit_of_measure, prod_pack_
size, supplier_id, prod_status, prod_list_price, prod_min_price)
INCLUDING NEW VALUES;
But if I create a Materialized View with TOAD if I choose a KEY field I receive the error:
ORA-12026: invalid filter column detected
Then I have to take out the Key (in the above example prod_id)
And then the script is
CREATE MATERIALIZED VIEW LOG ON products
WITH ROWID, SEQUENCE, PRIMARY KEY!!!!!!!!!!!!!!!!!!!!
(prod_id, prod_name, prod_desc, prod_subcategory, prod_subcat_desc, prod_
category, prod_cat_desc, prod_weight_class, prod_unit_of_measure, prod_pack_
size, supplier_id, prod_status, prod_list_price, prod_min_price)
INCLUDING NEW VALUES;
I have PRIMARY KEY in the definition (I donât choose it) and I donât have the prod_id field
Why is it????
Note: If I execute the script to create the MV Log manually the PRIMARY KEY option NO IS in the script and the prod_id field either is in the script.
And on the other hand,
What is this:
CREATE MATERIALIZED VIEW LOG ON sales
WITH ROWID;
CREATE MATERIALIZED VIEW LOG ON times
WITH ROWID;
CREATE MATERIALIZED VIEW LOG ON customers
WITH ROWID;
These MATERIALIZED VIEW LOG contain any fields????
Or it contain the primary key fields of this tables (sales, times and customers)??? Then, Why is it ROWID instead of PRIMARY KEY????
Thanks!

Data Replication Between Sqlserver and Oracle11g using materialized view.

I have Sqlserver 2005 as my source and oracle11g as my target.I need to populate the target daily with change data from source.
for that we have created a dblink between sqlserver and oracle and replicated that table as a Materialized view in Oracle.
problem we are getting here is Fast refresh option is not available.each day it will pick full data from the source.
is there any way to use Fast refresh in this scenario??
Thanks in advance.
Regards,
Balaram.

Pl do not post duplicates - Data Replication Between Sqlserver and Oracle11g using materialized view.

How do I create a view in SQL Server in Visual Studio Express 2013 for Desktop?

Hi
I've got a SQL Server database set up using the internal SQL Server in Visual Studio Express 2013 for Desktop. I want to create a view (using tables with one to many relationships) but I don't
know how to do it.
Where can I find a good tutorial on creating views in SQL Server in Visual Studio Express 2013 for Desktop? I think Visual Studio Express 2013 for Desktop doesn't have some view designer that
exists in the non-express version of Visual Studio (if I'm not mistaken). So I think I'd need a tutorial on how to do the actual SQL, unless there is some tool I don't know about.
Thanks

Hi ,
According to your description, if you install SQL Server SQL Server 2014 Express and SQL Server Manager Studio tools (SSMS), if you want to create a view, you can use SSMS. Then if you want to connect to and Diagram your SQL Express Database in Visual Studio
2013, you can attach the database file by using the .NET Framework Data Provider for SQL Server in Visual Studio, and create a database diagram via expanding the “Database Diagrams” node.
For more information, there is similar issue about how to connect to and Diagram your SQL Express Database in Visual Studio 2012 , you can review the following article,
http://blogs.msdn.com/b/bethmassi/archive/2011/10/27/how-to-connect-to-and-diagram-your-sql-express-database-in-visual-studio-lightswitch.aspx.
Regards,
Sofiya Li
Sofiya Li
TechNet Community Support

Possible to view MS SQL Server Log in SAP GUI?

Hi,
I am wondering if I can view the SQL Server log in SAP GUI using a transaction code.
I don't readily see how to do this with the TEs. It would be helpful to see things like: who has tried to log into the SQL Server via a Database Management tool : agnostic to SAP.: is SQL Server Management Studio or DBArtisan or other services.
thanks
Chris

Hi chris
Yes,you can view the Sql server log in transaction code ST04 & DBA Cockpit in SAPGUI.
Kindly refer the SAP notes.
139945 - SAP Database Monitor for MS SQL Server
1027512 - MSSQL: DBA cockpit for basis release 7.00 and later
Regards
Ram

How can we find the most usage and lowest usage of table in Sql Server by T-SQL

how can we find the most usage and lowest usage of table in Sql Server by T-SQL
The table has time stamp column
StartedOn datetime
EndedOn datetime

The Below query has been used , but the textdata column doesnot include the name of the table ServiceLog.
SELECT
FROM
databasename,
duration
fn_trace_gettable('F:\Program
Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Log\log_148.trc',
default)
WHERE
DATABASENAME='ZTCFUTURE'
AND TEXTDATA
IS
NOT
NULL
--AND TEXTDATA LIKE 'SERVICE%'
order
by cpu
desc;

Need to connect SQL Server 2008 and CR 2008 via OLE DB SQL Server Provider

I am relatively new to Crystal but have done some minor design/layout work in the past. I just purchased CR 2008 and dowloaded a Eval Copy of SQL Server 2008 to build test reports that will then be uploaded to a hosted web app we use for use with live data.
I am having some trouble, however, getting SQL server and CR 08 to talk the way I need them to. We have to use the OLE DB for SQL Server Provider connection for the reports to work in our hosted live environment but I cannot get this to work on SQL 2008. The server never appears in the Server dropdown and if I manually type it get the following error:
failed to open connection.
Detail ADO Error Code: 0x80004005
Source: Microsoft OLE DB Provider for SQL Server
Description: [DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access is denied.
SQL State: 08001
Native Error: 17 [Database Vendor Code: 17 ]
I am setting up the connection through the Database Expert choosing the OLE DB (ADO) folder and then selecting 'Microsoft OLE DB Provider for SQL Server' then entering my server name, user id, password, and Database name.
I have uninstalled and reinstalled everything twice. I have installed the Microsoft SQL Server 2008 Analysis Service 10.0 OLEDB Provider pack.
My provider/host does use SQL Server 2005 but since I can't get a free Evaluation version of it I have to use 2008 for my local copy. I have searched the web over (including here) and cannot find an answer to my issue.
I cannot use SQL Server Express version because our copy of the DB is too big. I cannot use the Native 10 provider as the reports will not work once I have uploaded them to the live data.
any help anyone can provide for this would be GREATLY appreciated. Thank you and sorry if this is a dupe post. I have searched everywhere and cannot find the answer.

Hello,
Go to Microsoft's site and download their OLE DB test tool and test the connection. Did you install the MS client tools to test the connection also?
As a test try creating an ODBC System DSN just to verify you can connect and create a report also.
And don't use the SA account, MS 2008 disabled it, sort of, so you'll have to create a new account and grant permissions to any table you need to use.
SQL 2008 changed security model big time so it's not the same as 2005 once was....
Good luck
Don

How to migrate SharePoint 2013 Content and Configuration DataBases to a new SQL Server and DataBases in it?

Hi,
We need to migrate Our current 1 clustered SQL Server, Many Configurations DataBases and Many Content DataBases to a brand new clustered SQL server and brand new databases in it.
How can I do this?
Can someone list the steps involved?
Thanks.

Hi,
According to your description, you want to move Content databases and Configuration databases to a new SQL Server, refer to this article:
https://technet.microsoft.com/en-us/library/cc512725.aspx?f=255&MSPPError=-2147217396
Besides, here is a similar post, you can use as a reference:
https://social.technet.microsoft.com/Forums/office/en-US/2cd46f7a-d583-41b2-82c2-ddc6d7c43fb8/how-to-move-sharepoint-databases-to-new-sql-server?forum=sharepointadminprevious
Best Regards,
Lisa Chen
TechNet Community Support
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact
[email protected]

Please ... tell me how to download and instale the setup for the SQL Server Express 2012

My OS is 32-bit and i have already downloaded the SQL Server 2012 Express but i cant find the SQL Server Management studio so please tell me how can i get it?

Hello Muhammad,
if you already install SQL server, to run the Managment Studio you can click Start and Run, and type "SSMS".
Of course you can create a shortcut and look for the file (this is the installation location you selected during the installation process) using the Windows search (pressing F3 activates the search).
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How to view SQL for a materialized view in SQL Developer (Oracle 11g R2)

Good Morning,
I am new to SQL Developer 3.1.07 and just installed it on a Windows 7 PC yesterday.
There's a materialized view for which I need to view (and eventually update) the SQL. The mat'lized view is in another schema, but my Oracle user does have access to the schema and to this particular mat'lized view. My user also has SELECT, INSERT, UPDATE, DELETE, DEBUG, and ALTER permissions. When I select (click on) the matl'ized view in the object tree on the left, a multi-tab window opens with information in the Columns, Indexes, Grants, Dependencies and Details tabs, but the SQL pane is blank. I don't know if there's some other GRANT that I need in Oracle, or if there's something else I need to do in SQL Developer to see the matl'ized view SQL.
Thanks
Bob Gardner
[email protected]

1007420 wrote:
There's a materialized view for which I need to view (and eventually update) the SQL. The mat'lized view is in another schema, but my Oracle user does have access to the schema and to this particular mat'lized view. My user also has SELECT, INSERT, UPDATE, DELETE, DEBUG, and ALTER permissions. When I select (click on) the matl'ized view in the object tree on the left, a multi-tab window opens with information in the Columns, Indexes, Grants, Dependencies and Details tabs, but the SQL pane is blank. I don't know if there's some other GRANT that I need in Oracle, or if there's something else I need to do in SQL Developer to see the matl'ized view SQL.SQL*Developer can be tricky regarding what it shows for other schemas. I'm not sure what privileges you might need besides the one you listed except RESOURCE on the MV, or maybe CREATE ANY MATERIALIZED VIEW.
Can you use DBMS_METADATA.GET_DDL to get the data you want (may/may not work due to privileges)?

Problem refreshing Materialized View in SQL Developer

I have a database schema with a Materialized View (MV) that updates a products table shown on a website. This schema was recently imported to an 11g database from 8i, but since this import I have been unable to refresh my schema’s Materialized View.
The MV_PRODUCT_MASTER Materialized View attaches price data to product data that is stored in a normal WEB_PRODUCT table, and create an MV table as a result. The output MV table is what the website pulls data from to display to the site users. Since it is an MV table, this table cannot be edited directly. In order to change, say, a product description, I need to alter the description field in WEB_PRODUCT and manually refresh the MV_PRODUCT_MASTER table. Only through the refresh will the upstream edits appear in the MV_PRODUCT_MASTER table and be visible on the website.
In my old 7.6.0.11 copy of TOAD, I could manually refresh these MVs easily, by opening the “Snapshots” tab, right clicking on the MV I wanted to refresh and selecting the “Refresh” option. Since the schema was imported to 11g, I have been using the Oracle SQLDeveloper tool to manage the schema. SQLDeveloper doesn’t have a clear method for manually refreshing an MV, or else the method I am using isn’t working.
If I right click on the MV_PRODUCT_MASTER Materialized View object, and choose “Other Actions”, I see the following choices:
Shrink Materialized View
Compile Materialized View
Force Materialized View Refresh
Rebuild Materialized View
…I assumed that “Force Materialized View Refresh” was the right choice, and chose that. This option displays the SQL:
alter materialized view "WEBADMIN"."MV_PRODUCT_MASTER" consider fresh
When I apply this, I get the message: “Materialized view “MV_PRODUCT_MASTER” has been set torefreshed”. However, no changes appear in the MV output table. i.e. if I make a specific change to a row in the WEB_PRODUCT table, the change is not being carried into the MV_PRODUCT_MASTER table, so that indicated that the refresh is not actually happening. The MV table appears to believe it is being refreshed:
REWRITE_CAPABILITY     GENERAL
REFRESH_MODE     DEMAND
REFRESH_METHOD     COMPLETE
BUILD_MODE     IMMEDIATE
FAST_REFRESHABLE     NO
LAST_REFRESH_TYPE     COMPLETE
LAST_REFRESH_DATE     06-APR-10
STALENESS     UNKNOWN
…but it isn’t showing any changes.
What am I doing wrong? Is there a plain SQL statement I can run in order to run these refreshes, instead of using the SQLDeveloper GUI? Thanks for any advice on this.

Hi Blama,
DDL for Index-organized Materialized Views is generated in the Early Adopter release 4.1.0.866, which is now available for download.
The Organization on the Table that is implemented as the Materialized View should be set to INDEX, and the Table's IOT properties will be used during DDL generation.
David

Index organized Materialized View in SQL Developer Datamodeler

Hello SQL Developer Datamodeler Team,
I'm using version 4.0.2.840 and looking for a how-to to change a MV to an IOMV.
So far I do the following:
Create Table in Relational Model
Create MV in Oracle 11g Physical Model
Double Click Table in Oracle 11g Physical Model
Set "Implement as MV" to my MV
OK
Now I can't find an option for index organized in Physical Model Materialized View properties.
The setting "Organization: Head/Index" for Physical Model MV-Basetable properties does not change the generated DDL.
Also, setting this to "Index" does not enable the window's "IOT Properties"-tab (like it does for normal tables).
Is it possible to create an Index organized Materialized View in current SQL Developer Datamodeler?
Thank you & Best regards,
Blama

Hi Blama,
DDL for Index-organized Materialized Views is generated in the Early Adopter release 4.1.0.866, which is now available for download.
The Organization on the Table that is implemented as the Materialized View should be set to INDEX, and the Table's IOT properties will be used during DDL generation.
David

What is the red block on left of Materialized View in SQL Object Browser

Hi
In APEX 4.0 i have a few Materialized Views - all work fine, but when I view them in the SQL Workshop Object Browser, a little red block appears on the left hand side of the MV name.
I'm curious to know what this might mean.
Thanks
Mike

Hi Jari
That is what is puzzling me, because if I examine the Details tab of the particular MV it shows as VALID.
The same shows when I run in SQL:-
select status
from all_snapshots where NAME = 'MV_NAME';
The status is valid.
It is not a problem - just puzzling?!
Thanks anyway.
Mike

Benefit and limitation of temp table in sql server 2008

I have a datagrid in front end of asp.net . when user select a row it shows another gridview (multiple row ) where user have to put some data. when user click CLOSE button i have to keep all data of 2nd gridview in reference with 1st gridview row id.
Same process for each row of 1st gridview. If i will keep all the record in a datatable in view state and finally save the data in database table when final save is clicked then the process may be very slow due to large data in view state. So i think to store
data in temp datable in database for each CLOSE click. For this porpose which temp table i should use
1. Local temporary tables
2. Global temporary tables
3. Normal tables.
Multiple user may do the same thing same time. Please help me.
Thanks

>1. Local temporary tables
>2. Global temporary tables
>3. Normal tables.
When used in stored procedures, local temporary tables (#table) are automatically multi-user.
For global temp (##table) & normal tables, you need to develop your own mult-user logic.
Kalman Toth Database & OLAP Architect
SQL Server 2014 Design & Programming
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Synatax and Example of Materialized Views in SQL server?

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