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

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11
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3answers
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SQL Profiler tutorials for newbie

The MSDN documentation tough to understand. Are there any online tutorials available to learn SQL Profiler? If possible, videos or simple blog posts would be preferred.
31
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5answers
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Why is there still a varchar data type?

Many of my databases have fields defined as varchars. This hasn't been much of problem since I live and work in America (where the only language that exists is "American". ahem) After working with ...
14
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4answers
10k views

SQL Server database on an SSD - any advantage to a separate file for every table?

I'm creating a database in which there will be around 30 tables, with every table containing tens of millions of rows and each table containing a single important column and a primary/foreign key ...
12
votes
1answer
11k views

How do you ORDER BY a parameter?

Just wondering if I could solicit some feedback on a stored procedure I'm running and whether there's a more efficient way of handling the scenario (I'm pretty sure there will be!). Basically I have ...
15
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1answer
2k views

What types of corruption can DBCC CheckDB miss?

This question was prompted by this earlier post and my having a database filed away for future investigation that was restored following: BACKUP 'BrokenDatabase' detected an error on page (1:123456) ...
12
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3answers
7k views

Is there a way to determine if SQL Server queries are running in memory or going to disk?

I came across a set of stored procedures in an application today that are called repeatedly within a long running process. Within each procedure I found multiple different select statements, some ...
11
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5answers
8k views

What's a good tool for visualizing SQL Agent jobs? [closed]

I find the built-in MS SQL Studio tools for managing Agent jobs to be a little frustrating. What tools out there have you found helpful? Offhand, there are three things I'd like to see in such a ...
9
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5answers
24k views

How to prevent transaction log getting full during index reorganize?

We have multiple machines where we have pre allocated the size of the transaction log to 50gb. The size of the table that I am trying to reorganize is 55 - 60 gb but is going to continuously increase. ...
8
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1answer
30k views

Finding the last time a table was updated

The query: SELECT name AS TableName, create_date AS CreatedDate, modify_date as ModifyDate FROM sys.tables order by ModifyDate; ...will tell me the last time a table was created ...
7
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3answers
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Will the transaction log shrink automagically in SQL Server?

When SQL Server database in a SIMPLE mode, you don't have to care about the transaction log bakcups. But in a SIMPLE mode, the transaction log seems to grow as it does in FULL mode. Does is truncate ...
6
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2answers
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Is it possible to get execution call stack in a trigger?

I have 10 stored procedures and each of them does INSERTs into one tableX. Is it possible in a trigger body of tableX to get what object causes modification of tableX (stored proc1 or sp2 or....) ? ...
16
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1answer
9k views

What exactly does “No Join Predicate” mean in SQL Server?

MSDN "Missing Join Predicate Event Class" says it "indicates that a query is being executed that has no join predicate". But unfortunately it does not seem to be as easy as that. For example, very ...
15
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4answers
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Anybody using HierarchyId in production? Is it reliable?

Is anybody using HierarchyId in real production with tables of reasonable size, more than a few thousand rows? Is it reliable/performant? So far I have not found anyone not affiliated with the vendor ...
15
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3answers
4k views

Why might a table's data space take up 4x the size of the raw data?

I have a table with 490 M rows and 55 GB of table space, so about 167 bytes per row. The table has three columns: a VARCHAR(100), a DATETIME2(0), and a SMALLINT. The average length of the text in ...
11
votes
2answers
1k views

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 ...
10
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2answers
4k views

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,...
9
votes
6answers
4k views

Tables with hierarchy: create a constraint to prevent circularity through foreign keys

Suppose we have a table that has a foreign key constraint to itself, like such: CREATE TABLE Foo (FooId BIGINT PRIMARY KEY, ParentFooId BIGINT, FOREIGN KEY([ParentFooId]) REFERENCES ...
8
votes
3answers
36k views

How do I run a batch file from a scheduled Job via SQL Server Agent

I'm attempting to run a (Windows) batch file from within a SQL Server agent job under SQL Server 2008 R2. In the Job Steps, I've created a new step, set its type to "Operating system (CmdExec)". I ...
6
votes
3answers
518 views

Is there an advantage to not partition aligning an index?

I have the privilege of managing a large partitioned OLAP table. While reviewing this table I noticed one of the indexes is not aligned with the partitioning scheme. Since the author is not ...
5
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2answers
12k views

SAN block size for SQL Server on 4KB NTFS

A potential customer wants to evaluate our storage system. They run Windows 2008R2 x64 with 4KB NTFS on a virtual test machine they've sent us. They did not seem to know this at hand, so I think it's ...
4
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3answers
3k views

How to sync the data between two identical DB

The thing is I've two identical databases, one is in my localhostserver at my laptop and the other one is on the office main server. Is there any automatic way or software that can synchronize the ...
14
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2answers
6k views

Central stored procedure to execute in calling database context

I am working on a customized maintenance solution using the sys.dm_db_index_physical_stats view. I currently have it being referenced from a stored procedure. Now when that stored procedure runs on ...
13
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3answers
2k views

What's the most effective way to duplicate an instance on SQL 2008?

We've got a simple database instance with just enough data in the databases to keep it useful, and we can use it for demonstration purposes, and I want to put a copy of it on my laptop so I can use it ...
11
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5answers
2k views

Backing up & restoring 10-20 SQL Server databases to a ~synchronous state?

I need to backup up 10-20 SQL Server 2008 R2 databases with sizes between 10-50 GB, while they are online and used simultaneously by a single enterprise app. I also need to restore them to a state ...
9
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4answers
31k views

Read XML file in SQL Server 2008

How can I read an XML file and store the data in XML to our table in SQL Server 2008?
8
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5answers
5k views

What is the most efficient way to alter a column definition in a table with millions of rows

I need to change a column from NOT NULL to NULL in a table that contains millions of rows. I've tried a simple alter table Table1 ALTER COLUMN Column1 XML NULL but it takes forever. So here are my ...
8
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2answers
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how will nvarchar(max) store data in database will it be fast if some data is less then 4000 characters?

I have to develop a CMS which will support two Language English, Arabic. This CMS will be a sort of Article Publishing site. While designing & analysis i found that some articles are more than ...
8
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5answers
14k views

User Permissions Messed Up following a Backup -> Restore Operation

I had to move several SQL Server 2008 databases to our new db server so I backed them all up (to .bak files), copied these files over to the new box and restored them (all done using SQL Management ...
8
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1answer
3k views

Free space of mdf and ldf does not match with database free space

In SSMS I saw file size related properties and found below details for one database. Here values does not match with other properties. Here size of the mdf, ldf and total size matches with other ...
7
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2answers
3k views

SQL Profiler - Scripting a trace with HostName filter

I have a stock of scripted trace definitions that I use for different levels of diagnostics, none of which filter by HostName. I needed to filter traffic by host today so: Fired up Profiler Created ...
6
votes
1answer
15k views

UPSERT - Is there a better alternative to MERGE or @@rowcount? [closed]

I was wondering if you have encountered a T-SQL command similar to the concept of UPSERT? Performing INSERT|UPDATE operations using options (1) or (2) seems overly complex and error prone. OBJECTIVE ...
6
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2answers
40k views

Primary filegroup is full SQL Server 2008

I have a large table (~50 million rows) I'm trying to bulk insert into SQL Server and I get the error: Could not allocate space for object 'myDB' in database 'I 3 Stroke' because the 'PRIMARY' ...
6
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2answers
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Linked Server Risks

I'm implementing a new feature which requires data from databases on multiple servers. I just need to union data from all these servers and sort it. The two options that come to mind are: Use linked ...
5
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2answers
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Grouping records based on intervals of time

I have a table with the following schema, and I need to define a query that can group data based on intervals of time (Ex. records per minute) and then provide the sum of the changes to the ...
5
votes
1answer
42k views

IF NOT NULL then UPDATE else keep the value of the field

I think I am somehow close to get it work, but for some reason I still get errors. I have the following UPDATE query: UPDATE DeviceAttribute SET Details = CASE Name WHEN 'Accessories' THEN ...
5
votes
2answers
13k views

Separate stored procedures for inserts and updates?

I have a table in Microsoft SQL Server. Sometimes I need to update, and sometimes I need to insert. I could write 2 stored procedures: InsertNewPerson UpdatePertsonById But I was thinking to write ...
4
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1answer
803 views

Understanding SQL Server encryption (by password)?

After asking this I still have a question. A company need to store sensitive data. Please let's not talk about certificate right now. A DBA does the following : CREATE SYMMETRIC KEY ...
4
votes
2answers
6k views

Reducing Key Lookups

I am using SQL server, and I have been looking closely at the concept of key lookups, http://blog.sqlauthority.com/2009/10/07/sql-server-query-optimization-remove-bookmark-lookup-remove-rid-lookup-...
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votes
4answers
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Working Linked Server Query fails in sp_send_dbmail

Take the following example: EXEC msdb.dbo.sp_send_dbmail @recipients = 'me@whatever.co.uk' , @query = 'SELECT TOP 10 * FROM LINKEDSERVERA.DATABASE.dbo.TABLE' , @attach_query_result_as_file = N'True' ...
3
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1answer
3k views

Why dropping all foreign keys from a script is not working? [closed]

I have sysadmin rights on a SQL Server 2008 R2 box. I found a script that can drop all foreign keys and re-add them for us when we need to after a testing import. So I execute the below code with no ...
3
votes
2answers
2k views

Problem with Czech collation Czech_CI_AI in MS SQL Server 2008 R2

I have the following issue with accent insensitive search in Czech language. My database is set to Czech_CI_AI collation. For some diacritics system works correctly (ie. I), but for some does not (ie. ...
2
votes
3answers
833 views

How to merge data sets without including redundant rows?

I think this must be a fairly common thing to do, but I haven't been able to find an example. It involves merging data that involves dates/times (or more generally any sequential values) without ...
2
votes
4answers
1k views

Identify cause of unusual transaction log growth

I have an application running on SQL Server 2008 (its a cluster but it hasn't failed over.) Previously the transaction log used to grow to 10-20Gb every 2-3 days and we would shrink it back after ...
2
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1answer
2k views

Simple Implementation of SQL Server 2008 Encryption

I am looking at using some of SQL Server 2008's encryption. I have read the following article on MSDN: http://msdn.microsoft.com/en-us/library/ms179331.aspx Q1a: Is the master key password ...
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vote
2answers
4k views

Protect SQL Server from hackers

Today, my SQL Server 2008 is attacked by hacker from IP address in China [4300 Login failure in last 7 hours]. I contacted GoDaddy support and below is what they told me. EXEC sp_readerrorlog 0, 1, '...
17
votes
4answers
16k views

What is the best query to use to monitor a SQL Server database's status?

I want to be able to run a query to get the crucial information about a database's status. I.e., I want the query to be able to tell what whether or not the database is in a good state. This is the ...
12
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4answers
5k views

Rebuilding Indexes, DB now 10x the size

I have a SQL Server database (2008 R2 SP1) that was about 15 gigs. It turns out maintenance hadn't been running in a while, so I created a maintenance plan to rebuild all the indexes, they were very ...
12
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3answers
10k views

Emulate a TSQL sequence via a stored procedure

I have a requirement to create a stored procedure which emulates a TSQL sequence. That is it always gives an increasing distinct integer value on every call. In addition, if an integer is passed in ...
11
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3answers
959 views

Executing same request from C# VS SSMS give different execution time

I have a request like this one SELECT [EstimateId], [CreationUserId], [EstimateStatusValueId], [LanguageId], [LocationId], [EstimatorUserId], [FilterUnitSystemTypeId], [EstimateNumber], [...
11
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1answer
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Empty Strings: Why or when is '' equal to ' '?

Who can explain why select case when '' = ' ' then 1 else 0 end, LEN(''), LEN(' '), DATALENGTH(''), DATALENGTH(' '); yields ----------- ----------- ----------- ----------- ----------- 1 ...