SQL Server 2008 (major build version 10.00.xxxx). Please also tag with sql-server.

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noexpand hint for non-enterpise edition and performance

I have to use Indexed views to reach performance. As I can see from this comparison table standard edition does not support indexed views. But BOL says: Indexed views can be created in any ...
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alert when any job in a job category fails

Is it possible to set up an alert in SQL Server 2008 that will send an e-mail anytime a job in a specific category fails? I am wondering because I would like to set up an e-mail anytime an SSRS ...
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Is there a reliable way to determine when you should run DBCC CLEANTABLE to reclaim space?

Lately, instead of just growing files when they near 80% file utilization, I've been more proactive at reclaiming space via the usual tricks like defragmenting heaps, adding & dropping clustered ...
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Should I add page level compression before adding the primary key, or after?

Situation Data warehouse on Sql Server 2008 Enterprise 36+ million row heap (don't ask), with 60+ columns 750k added monthly No primary key defined (I have now identified one) No compression What ...
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ODBC Data Source SQL Server Connection - Login Failed For User

I have moved my database from an SQL 2005 to a server with SQL 2008. I am now trying to create an ODBC Data Source. I am using "With SQL Server authentication using a login ID and password ...
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SQL Agent powershell context reference

At my new job, we have multiple named instances on each servers. Server1\Dev Server1\DevIntegrated Server1\QA I have a SQL PowerShell script in the works that calls out to the OS, invokes Foo....
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How to detect any changes to a database (DDL and DML)

There are a lot of databases on my client's sql server. In common, these databases is under development, so developers can design, refactor, do data modifications and so on. There are some databases ...
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BULK INSERT permission on a single database

I work on a company that has straight IT security manners. I was hired as a Database Analyst in order to optimize some processes in our team. The problem is that I only have read and write permissions ...
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SQL Server 2008 R2 Dirty reads - how non-atomic?

I am wondering "how dirty" dirty reads can get under a read-uncommited isolation level. I understand that rows that have been updated but not yet committed are visible, but: Can a row appear as ...
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Maximum table capacity in SQL Server 2008

I have an application which inserts more than 1 billion rows annually into a table. This table contains some varchar and bigint columns and one blob column as well. The 1 billion rows consist of ...
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Query becomes drastically slower when wrapped in a TVF

I have a fairly complex query which runs in just a few seconds on its own, but when wrapped in a table-valued function, it's far slower; I've not actually let it finish, but it's run for up to ten ...
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SQL Server VARCHAR Column Width

Searching around the web, I have found conflicting advice on whether there is a performance impact when specifying overly-wide VARCHAR columns, e.g. VARCHAR(255) when VARCHAR(30) will probably do. I ...
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Why does my ORDER BY sort two tables before the EXCEPT (slow) and not after (fast)?

SQL server 2008 R2 query optimizer puzzle We have two tables, both containing 9 million rows. 70.000 rows are different, the others are the same. This is fast, 13 seconds, select * from bigtable1 ...
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SQL Server Analysis Studio naive Bayes attribute has too many states [closed]

I'm using SQL Server Analysis Studio and I'm trying to train a naive Bayes classifier. I've got an attribute called "item description" that basically represents products you can buy at a store. I've ...
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SQL Server command line usage? Is it possible?

I've been trying to use the SQL Server Management Studio 2008's built in "Solution Explorer" to manage a project and after 2 weeks of struggling with it, I've decided I don't really care for it. It's "...
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How can I write windowing query which sums a column to create discrete buckets?

I have a table which includes a column of decimal values, such as this: id value size -- ----- ---- 1 100 .02 2 99 .38 3 98 .13 4 97 .35 5 96 .15 6 95 .57 7 94 .25 ...
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How to change the firing order of Triggers?

Realy I rarely use triggers. So I met a problem at first time. I have a lot of tables with triggers (2 or more for every table). I would like to know and change the order of firing triggers for every ...
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How do I determine if a table exists in a SQL Server database in SQL Server 2008?

How do I determine if a table exists in a SQL Server database in SQL Server 2008?
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SQL Server 2008/R2 recovery model

Pretty much all of our databases on certain servers do not require the Full Recovery model (we don't do transaction log backups) and the default should always be to create databases and specify the ...
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Location of the mdf file of the database

I have a database Project. My problem is where can I find the .mdf and _log.ldf of my database so that I can transfer my database to another user. I am using Microsoft SQL Server 2008 Management ...
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Why does 10^37 / 1 throw an arithmetic overflow error?

Continuing my recent trend of playing with large numbers, I recently boiled an error I was running into down to the following code: DECLARE @big_number DECIMAL(38,0) = '1' + REPLICATE(0, 37); PRINT @...
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Would it be considered as a bad practice to have multiple nullable FKs on a table in SQL Server

On my database structure in SQL Server, I have 3 types of products which requires different information about the order. So, I created one Customers table and three different orders tables: ...
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Chaining SQL Server Agent Jobs

I have several work packages for each I have setup up a job in sql server agent. Sometimes I should run all together. What is the best way to run them all in a given sequence? I'm a bit surprised that ...
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@table_variable or #temp_table

I have a big user defined table type variable that has 129 columns. I will store around 2000-3000 records in this table variable at a time and pass it to various stored procedures and functions to get ...
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If a transaction is “committed” , is it then saved for sure?

If a transaction is committed successfully, can I then be 100% sure that it has been written to the database AND to the log files? Can I be sure that the data is SAVED ? Today our log files had ...
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Why does sql server need to convert count(*) result into int before comparing it with an int variable?

I have many queries in my application where in the having clause, I have comparison of count aggregate function with int variable. In the query plans, I can see an implicit_convert before the ...
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Restrict access for Windows administrator

As the SQL Server best practices says, "Windows Authentication mode is more secure than SQL Authentication". And now I want to know: is there a way to protect SQL Server from user with Windows ...
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Can I create a user defined table type and use it in the same transaction?

When I execute the following (in management studio, GO will separate the commands into batches) use tempdb begin tran go CREATE TYPE dbo.IntIntSet AS TABLE( Value0 Int NOT NULL, Value1 Int ...
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What are the differences between leaf and non-leaf pages?

I've been running some index usage reports, and I'm trying to get a definition of Leaf and Non-leaf. There seem to be both Leaf and Non-leaf Inserts, Updates, Deletes, Page Merges, and Page ...
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Suppress SQL Server Management Studio auto complete

Is there a way to temporarily suppress SQL Server Management Studio's auto-complete while typing a query? I don't want to disable auto-complete completely just say hold down some key while typing in a ...
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How many Sproc Parameters is too many?

I've just started writing a Stored Procedure in SQL Server 2008 and have 30+ parameters. I've never written one with more than ~10 parameters, and that got me thinking... At what point are there too ...
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Listing the existing SQL Server Logins and Users

I know we can check the logins and the users that are defined, using GUI in SQL Server, but am wondering how we can do this check using script. I ran the query below but it shows Principal_id which I'...
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How and when does SQL Agent update next_run_date/next_run_time values?

I've been working on code in T-SQL to add new schedules to a SQL Agent job using the sp_add_jobschedule proc in the msdb database. When I add a new schedule (typically a run-once at a specific date/...
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Is there a way to force an index to stay in memory with SQL Server 2008?

I've got a table with several millions rows, from which I need to run some queries from time to time. First query will usually be quite slow (around 10s), and subsequent queries are usually way faster ...
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Data type for storing an array of flags (a bitmap/bit array)

I need to store a bit array for each record of a table, supporting the following operations: Testing if a bit is set, and setting a bit (using SQL) Querying and setting the value using ADO 2.8 (not ...
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Tracking stored procedure usage

Besides using SQL Server Profiler, is there any way to track which stored procedures are being used, or at least when they were last executed?
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Do SQL Server Express Editions support CLR procedures?

Do SQL Server Express Editions (2005, and 2008) have support for installing, enabling and running CLR Stored procedures and functions.
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Snapshot Replication Retention

I've got Snapshot replication set up on my SQL Server 2008 production server, and I just noticed that there are snapshots ranging back to a year ago in the snapshot folder. How can I change the ...
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How to set up indexed view when SELECTing TOP 1 with ORDER BY from different tables

I am struggling to setup an indexed view in the following scenario so that the following query performs without two clustered index scans. Whenever I create an index view for this query and then use ...
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Setting user permissions for different SQL Server schemas

I need to limit access to a particular user, but they still need to be able to see the data in tables owned by dbo. I'm trying to do the following: dbo schema functions as it would normally, has ...
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Maximum memory setting in SQL Server

I'm running SQL Server 2008 and a web based application, on a single dedicated server, with only 2Gb of memory available. As is noted elsewhere, SQL Server regularly takes up to 98% of physical ...
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Is data retrieved from SQL Server compressed for transmission?

Is data retrieved from Microsoft SQL Server compressed? If this is controlled by the connection string, is there any simple way to tell if any particular app is using it? I'm examining analysis tools,...
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Mirroring - Server network address cannot be reached

I have SQL Server 2008 R2 Installed. It contains three instances. Default (MSSQLServer) First Instance Second Instance All these are Log On as Network Service.. Default Instance is Principal ...
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Why is “Lookup” colored as a function reserved word in SQL Server?

In SSMS 2208, the identifier "Lookup" is colored hot pink as if it were a function (same color as, say, "Power" or "Convert"). Why? I cannot find it in the official list of reserved words. Searches ...
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How to find corrupt page in SQL Server 2008

I know I can execute a DBCC CHECKDB and get a status of my database. Questions How can I find if there is some corrupt data page into my database? If an error is throwndue to page corruption, where ...
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How large is “too large” for SQL 2008 Web Edition?

For our soon-to-be-hosted application I need to choose between SQL Server 2008 Web edition and SQL Server 2008 Enterprise edition. There isn't any "must-have" functionality: the application currently ...
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Restore bak file to smaller mdf and ldf database files

I have a legacy database whose nightmarish lack of design I will not get into here, but the files on the server are (relatively) enormous. I have: MyDatabase.mdf: 24.8GB MyDatabase.ldf: 114.6GB This ...
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Database starts always in recovery mode

Everytime I restart my server, the database is always in recovery mode, and it takes about 20 minutes for it to behave as normal. This always and only happens when I restart the server, so I have a ...
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Is there a set based way to load/read a tree branch with HierarchyId

I am playing around with HierarchyId, and I have not figured out a set based way to do the following: insert all subtree at once retrieve all subtree at once This question is related to my ...
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What's the best method to refresh only a few tables within a test database from production?

I have a very large production database and a very large test environment database in SQL Server 2008R2. Both databases have similar table structure but different users/logins/permissions/roles. I ...