All versions of Microsoft SQL Server (not MySQL). Please also add a version-specific tag like sql-server-2016 if that is relevant to the question.

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Does the PCI standard forbid the use of Windows Authentication?

We currently use Mixed Mode for our SQL Server Authentication. I've tried to convince our DBA to allow us to use Windows Authentication so we can use Team Foundation Server, however he absolutely ...
6
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1answer
76 views

Some SQL Server geospatial queries take much, much longer than others

We have a simple SQL Server table with geospatial data that looks like this: CREATE TABLE [dbo].[Factors]( [Id] [int] IDENTITY(1,1) NOT NULL, [StateCode] [nvarchar](2) NOT NULL, [...
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4answers
554 views

Compare 4 or more columns values

I have a table like: ID A0 A1 A2 A3 A4 14 A B A C A 15 A A A A A I need to compare all 5 columns and check if they have same value and retrive the only one that have all same ...
6
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1answer
84 views

Is my implementation of type/subtype design pattern (for mutually exclusive subclasses) correct?

Introduction In order for this question to be useful for future readers I will use the generic data model to illustrate the problems I face. Our data model consists of two entities, which shall be ...
6
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2answers
4k views

SQL Server Profiler is available for SQL Server 2008 Dev Edition?

I just upgrade from SQL Server 2008 Express with advance services to Dev Edition. I wonder whether SQL Profiler is available for the Dev Edition? Please let me know how to access that if it is ...
6
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2answers
201 views

Most effective way to determine the minimum set of permissions for user

I have a database that an application connects to using db_owner permissions. How do I effectively determine the minimum set of requirements actually needed by this user (application) to run without ...
6
votes
1answer
2k views

Referencing system views in SSDT?

I've imported a database into SSDT containing a reference to a system view (specifically, sys.columns). The problem is, that I then get warnings about unresolved references when I build the project ...
6
votes
1answer
607 views

Why am I missing some output?

Archiving to avoid ID Exhaustion We are about to run out of IDs in one of the tables of our OLTP logging system. It's my job to find a way to 'archive' the existing row data in the full table and in ...
6
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3answers
856 views

How do I merge similar records with different validity dates?

The table I am working on has three components: An ID column (primary key in another table) Some data columns Date valid from/to columns. Values: ID Data From To 1 a 2015-01-...
6
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2answers
3k views

How do I shrink the physical Transaction Log file when it's the principal in a mirror?

We setup database mirroring over the weekend, and forgot to re-enable the job that backs up the transaction logs. When I came in this morning, the transaction log had ballooned to 58GB, and was taking ...
6
votes
3answers
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Transaction Log maintenance when switching to Simple Recovery

Background: I recently inherited 50+ SQL Servers with 450+ databases. The nightly backups are roughly 8TB and, needless to say, we're using more disk space than we'd like. All of the databases are ...
6
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2answers
22k views

Why does simple ALTER TABLE command take so long on table with full-text index?

I have a large (~67 million rows) name-value table that has full-text indexing on the value column (DataValue). My question is: If I try to run the following sql command: ALTER TABLE VisitorData ...
6
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2answers
803 views

How can I run multiple concurrent versions of my application against the same database?

Background: I have multiple concurrent versions of my application running in my production environment. Depending on the user account that's used, the user will have access to a different version of ...
6
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1answer
5k views

Error 18456 error severity 14 state 5 SQL Server 2012 SCCM2012 SP1

We had a primary site for SCCM 2012 SP1 running fine. I then installed CAS for SCCM on another server. The prerequisites required me to change the collation on the existing server. I did this and ran ...
6
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2answers
5k views

Is it viable to attribute permissions to SQL Server virtual accounts (NT Service\SQLSERVERAgent, etc)?

Using MS SQL Server 2012 in Microsoft Windows Server 2008. I am somewhat confused by the New Account Types Available with Windows 7 and Windows Server 2008 R2 virtual Windows accounts [NT SERVICE]\&...
6
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2answers
646 views

Why select max partitioned column is much slower than indexed one?

I have a big partitioned table (300+M rows, 70 active partitions). The table has clustered PK of (K0, K1) and it's partitioned on column K1. And K1 has very low selectivity. However the following ...
6
votes
1answer
655 views

Why can a SQL Server table not have more than one IDENTITY column?

Why can a SQL Server table not have more than one identity column? CREATE TABLE t(id INT IDENTITY, id2 INT IDENTITY) Msg 2744, Level 16, State 2, Line 5 Multiple identity columns specified for ...
6
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3answers
11k views

How to make conditional ordering for two or more columns

IN MSSQL 2005 I am writing one query with conditional sort and my problem is I do not know how I can sort condidional using two columns. if i wrte code like this it is working normaly select * from ...
6
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2answers
665 views

SQL Server configuration / specification recommendations and advice!

I am about to deploy a new server at work as follows: Dell T610 2 x Xeon 2.53 Quad core 24 GB RAM 1 x Perc H700 RAID controller with 1GB Non Volatile memory 8 x 300GB 15k SAS Hard drives I am looking ...
6
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2answers
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What units are 'reads' and 'writes' in dm_exec_query_stats

MSDN describes the various logical / physical read and write columns in dm_exec_query_stats as: Number of physical reads performed the last time the plan was executed. Those columns are all 64 ...
6
votes
1answer
331 views

sys.dm_exec_requests - start_time

I have the following query that tells me the status of queries in a database I'm responsible for (although I am not a DBA). SELECT T3.FullStatement as FullSQLStatement ,T3....
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votes
3answers
824 views

Why is Row Overflow not working on SQL Server 2005

I have a SQL Server 2005 database with a table that has around 860 columns. Aside from the ID column all other columns are varchar(N) where N is either 100 or 500. Upon inserting a new row (via an ...
6
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3answers
860 views

Tell SQL Server a query is ad hoc and not to optimize based on it

Is there a way to run a one-off query against a production SQL Server database and tell it not to make any future judgments based on that query. E.g. Store execution plans, recommend indexes, etc. ...
6
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1answer
2k views

Replicated Database Log File Maintenance

I have a database on the publisher that is involved in replication (publication configured for merge and transaction). Trying to regain control of the log file for this particular database (VLF count, ...
6
votes
1answer
160 views

Procedure Cache Dropping

We've experienced an issue with SQL Server dropping proc cache out of the blue. I'm talking 4GB down to 0 in 2 minutes. This has occurred approx once per day in the last two weeks. It does happens ...
6
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3answers
32k views

“lock request time out period exceeded” Error When Trying to See DB Hierarchies

I'm having problems with a database. I can run basic queries, albeit much slower than normal. When I attempt to view the hierarchy trees for tables, views, or procedures in SSMS Object Explorer, I ...
6
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1answer
640 views

SQL Server: Unable to save import export package, but am on Standard Edition

I am confused. Issue: SSIS ("SQL Server Import Export Wizard") should let me build a data import package and save it to a file, for easy re-running (converting to a task, etc.). I want to save a ...
6
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2answers
2k views

sql server max memory includes SSIS?

I have installed 2 instances of sql server plus SSIS on the following server. Note the amount of RAM is nearly 384 GB And this is the max and min memory settings that I have applied to my 2 ...
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2answers
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Does the Sql Server Agent account need sysadmin permission?

I ran Brent Ozar's sp_blitz script, and one of the things it's complaining about is that my SQL Server Agent account has sysadmin permission. I removed the sysadmin permission, but then the agent ...
6
votes
2answers
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How can I backup & restore a single FILEGROUP in Sql Server 2008

Previously, on ServerFault I asked a question about backing up and restoring a Sql Server 2008 Filegroup. Today, when I tried to RESTORE one of these FILEGROUP backups, I got the following error:- ...
6
votes
1answer
1k views

How to get online the database which has missing/corrupted FILESTREAM files?

I've corrupted the files related to FILESTREAM in a database. The .mdf and .ldf files are still intact, but when I try to get the database online, it complains, saying that the files related to ...
5
votes
1answer
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How can dm_db_index_usage_stats show 0 for user_seeks and user scans but a large number for user_lookups?

I'm probably not understanding something but here is the question. I have done a query on dm_db_index_usage_stats. I've noticed that a couple of my indexes have large numbers (6.5 million and 20 ...
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1answer
9k views

Problem adding a new node to a SQL Server 2012 Failover Cluster

I tried to add a new node to SQL Server (2012 Standard) Failover, that is already installed on another node in Windows2012 Failover Cluster I have an issue with non editable field wiht input for SQL ...
5
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3answers
3k views

Port number change

We are planning on setting a static port for SQL Server 2005/2008 failover clustering. Any guide on what port to choose/select for 4 nodes of each cluster?(Active/Active) I am also thinking some ...
5
votes
1answer
1k views

Connecting to SQL Server using cached credentials

While migrating from SQL authentication (user-password) to integrated security I ran into an unexpected combination of requirements. SQL clients are services running under a LOCALSYSTEM or ...
5
votes
3answers
4k views

“Deploy Database to SQL Azure” Task missing

I recently installed SQL Server 2014 Express on a workstation I have and am trying to deploy to SQL Azure. I've done this before on a previous workstation using SQL Server 2012 Express by doing the ...
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2answers
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Is there a way to ensure that a SQL Server trigger will be executed?

My supervisor is hesitant to use a trigger in a process because if there is a network interruption at just the right time, the process would not complete. Does SQL Server include the trigger in the ...
5
votes
1answer
281 views

Move content between filestream containers

I have a server running SQL Server 2012 with Multiple Filestream containers on a single table. I need to split one of the existing filestream containers into two parts by creating a new filestream ...
5
votes
4answers
18k views

TSQL command to delete backup files older than N hours

Can anyone please help me with a TSQL commmand to delete backup files older than N hours?
5
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3answers
3k views

SQL Server 2005 Tools makes SQL Server 2008 Express install fail

When I tried installing SQL Server 2008 Express, the install failed due to this line. How can I circumvent this, or fix the issue?
5
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4answers
693 views

Primary Key choice on table with unique identifier

I'm reconsidering my choice of Primary Key on a table, and would like some input. Some context: We are building a REST API, where clients access "Assets" identified by a GUID. So, the table for ...
5
votes
3answers
768 views

SQL Server- Table partitions on SSD

I have a table in my database that has about 250m rows. I'm new with databases but I have read up about partitioning the table to increase performance. One of the important points that I seem to ...
5
votes
1answer
14k views

Repairing corrupt SQL Server database backup?

I'm looking at a problem for someone who was backing up to a cloud-based service. Apparently the customer's server crashed while it was performing some maintenance on the cloud-based service's ...
5
votes
2answers
181 views

Always On Availability Group, Always redirect user to read only instance

We have an Always On availability group with a primary and a read-enabled secondary. We have a user for the implementation team who uses the database to check the correctness of the data that they are ...
5
votes
1answer
658 views

TFS 2012 - Database Project - User with NO LOGIN map to Windows - best practices

I have a SQL Server Database Project (.NET 4.5) in TFS 2012. As a DBA, i'm looking for a mechanism whereby the developers can create 'CREATE USER' sql scripts and assign their permissions within the ...
5
votes
2answers
209 views

Buffer Size Changing?

I have a production database that is experiencing wildly fluctuating Page Life Expectancy (PLE) issues. (It crashes to zero at random times.) I have been researching the PLE issue and have found ...
5
votes
1answer
203 views

What is the minimum required compatibility level to use parallel SELECT INTO?

What is the minimum required compatibility level to use parallel SELECT INTO in SQL Server 2014?
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1answer
358 views

How can we have IIS talk to SQL Server with TLS1.0 disabled? [duplicate]

Background We need PCI-DSS compliance, and so must disable TLS1.0. In my test environment we have SQL Server 2014 SP1 with CU 1 (as per this post) and IIS 8 all on the same box. I used the Nartac ...
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1answer
1k views

What is Sql Server Clustered Index in Oracle terminology

A clustered index in sql server like a dictionary or telephone directory. A,B,C,D it goes on. If you look up with a name Ozgur you start O then z etc. I would like a simple explaination for this ...
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4answers
196 views

Implicit conversion warning despite persisted computed column vs. performance hit from UDF in persisted computed column definition

I have a need for a computed column to resolve an implicit conversion problem. I have a column that is declared as a VARCHAR that should only ever store integers, but is occasionally populated in ...