SQL Server 2012 (major build version 11.00.xxxx). Please also tag sql-server.

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11
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1answer
3k views

Is it possible to record incoming parameter values in a procedure call while tracing in SQL Server Profiler?

Using SQL Server Profiler (I'm on SQL Server 2012), I'm trying to generate a useful trace that shows the parameter values, not just the SQL with variable names. The stored procedure walks through a ...
11
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1answer
662 views

SET STATISTICS IO- worktable/workfile

I am executiong query, that produces plan: Statistics IO: Table 'Worktable'. Scan count 0, logical reads 0, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob ...
11
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1answer
2k views

SQL Server 2012 Standard server with 50 instances won't uninstall instances

I suspect this is an issue because we hit the 50 instance max limit of SQL Server. At the limit it won't install more instances, naturally. However, it seems it won't UNinstall them either. That's ...
10
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4answers
1k views

Determine 3rd Friday of each month

I need to determine the dates which are the "3rd Friday of each month" for a date range of "1.1.1996 - 30.8.2014" in SQL Server. I expect I should use a combination of DENSE_RANK() and PARTITION BY() ...
10
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3answers
10k views

Restrict update on certain columns. Only allow stored procedure to update those columns

I have sensitive price columns that I would like to have updated only through a stored procedure. I would like all code or manual attempts to alter values in these price columns to fail if it is not ...
10
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2answers
821 views

What is the logic behind ISNUMERIC for certain special characters?

The ISNUMERIC function has some unexpected behavior. The MSDN documentation says: ISNUMERIC returns 1 when the input expression evaluates to a valid numeric data type; otherwise it returns 0. ...
10
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1answer
902 views

Forcing an index spool

I know its something that should be avoided for performance reasons, but am trying to show a condition where it appears as a demo on how to make sure it does not appear. However, I end up with a ...
10
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4answers
12k views

SSMS Tools Pack Alternative [closed]

Are there any tools out there comparable to SSMS Tools Pack 2012? The licensing ($30 per machine, $100 for any number of machines... for 3 months) leaves a lot to be desired and I wasn't sure of what ...
10
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5answers
36k views

What is the fastest way to export a table to a text file

I will have a SQL Server 2012 database and a table with 3 million rows and maybe 50 columns. What will be the fastest way for an unattended background .net process (maybe issues some SQL or Powershell ...
10
votes
3answers
8k views

How best to maintain SQL log file sizes

I'm somewhat of a new DBA and I'm managing a SQL Server 2012 instance that has a fair amount of activity. I'm running in Full Recovery mode because we need point in time recovery. Right now, I'm ...
10
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3answers
1k views

Why are there execution plan differences between OFFSET … FETCH and the old-style ROW_NUMBER scheme?

The new OFFSET ... FETCH model introduces with SQL Server 2012 offers simple and faster paging. Why are there any differences at all considering that the two forms are semantically identical and very ...
10
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2answers
4k views

SQL Server Management studio slow connection or timeout when using Windows Authentication

I'm getting extremely long delays (10~30 seconds) in SQL Server Management Studio 2014 when attempting to connect to a SQL Server 2012 instance over TCP using Windows Authentication. This happens when ...
10
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3answers
337 views

Configure RAM for SQL Server and NUMA

Accidental DB admin here. Question: Would you still manually limit max RAM for SQL Server even though the sole purpose of that server is to serve SQL Server database engine only? I have Microsoft ...
10
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3answers
2k views

SQL Server query slow when paginated

I am seeing some strange behaviour with the following T-SQL query in SQL Server 2012: SELECT Id FROM dbo.Person WHERE CONTAINS(Name, '"John" AND "Smith"') ORDER BY Name Executing this query alone ...
10
votes
1answer
153 views

Does CREATE TABLE SomeSchema.#TempTableName have a bug?

Simple test-bed: USE tempdb; GO /* This DROP TABLE should not be necessary, since the DROP SCHEMA should drop the table if it is contained within the schema, as I'd expect it to be. */ ...
10
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1answer
161 views

Why is the secondary selective index not used when the where clause filters on `value()`?

Setup: create table dbo.T ( ID int identity primary key, XMLDoc xml not null ); insert into dbo.T(XMLDoc) select ( select N.Number for xml path(''), type ) from ( ...
10
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2answers
213 views

SARG cardinality estimate, why not full-scan?

Why there is no full-scan (On SQL 2008 R2 and 2012)? Test data: DROP TABLE dbo.TestTable GO CREATE TABLE dbo.TestTable ( TestTableID INT IDENTITY PRIMARY KEY, VeryRandomText VarChar(50), ...
10
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2answers
4k views

SQL Server's READ COMMITTED SNAPSHOT vs SNAPSHOT

I was researching the differences between SQL Server's READ COMMITTED SNAPSHOT and SNAPSHOT isolation levels and came across the following resource: Choosing Row Versioning-based Isolation Levels ...
10
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1answer
2k views

Using SQL Server 2012 Standard with Bitlocker

We're trying to use Bitlocker to secure an SQL Server 2012 database. We don't have any issue getting bitlocker to work... the issue we have is that once the drive is locked, SQL Server can no longer ...
10
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1answer
95 views

Job not running on Schedule

So I have a basic SQL agent job that runs a Robocopy script to move all files from one folder to another. Job is a pretty basic set up. With a pretty basic schedule. And yet it has yet to run. ...
10
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2answers
1k views

Improving the performance of STIntersects

Table T_PIN has 300,000 pins and T_POLYGON has 36,000 polygons. T_PIN has this index: CREATE SPATIAL INDEX [T_PIN_COORD] ON [dbo].[T_PIN] ( [Coord] )USING GEOGRAPHY_GRID WITH (GRIDS =(LEVEL_1 = ...
10
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1answer
6k views

Upgrade SQL Server 2005 to SQL Server 2012

I have a test environment set up with the following: Virtual Machine (Hyper-V) Windows Server 2008 R2 SP1(x64-bit) Windows SQL Server 2005 Developer Edition SP4 (x64-bit)(default instance name) 1 ...
10
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1answer
1k views

MDX Query for RANK regardless of hierarchy

I'm hoping to add a calculation to my SSAS Cube (SSAS 2012) that will show the relative rank of whatever the current member is against all other members in that grouper, without specifying the ...
10
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1answer
1k views

SQL Server 2012 Page Life Expectancy resets to 0 after about 50 days

I've noticed an odd behavior on a 2-server HA cluster and I was hoping someone could confirm my suspicion, or maybe offer some other explanation... Here is my setup: A 2-server SQL 2012 SP1 ...
10
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1answer
427 views

High PAGELATCH_* and WRITELOG waits. Are they related?

We are seeing very high PAGELATCH_EX and PAGELATCH_SH wait types along with high WRITELOG waits. I've diagnosed the query causing the PAGELATCH waits and can eliminate them by reducing the insertion ...
9
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6answers
3k views

Migrate from SQL Server 2000 to 2012 without a 2005 or 2008 instance

I have come across three old databases sitting on SQL Server 2000 which I need to move to 2012. I believe the standard approach is to restore into a 2005 or 2008 instance, update, re-export and ...
9
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3answers
12k views

Truncated 200GB table but disk space not released

I have only 2GB left, so I need to remove this history table. This table now is empty but the database disk space not released. And the database file is 320GB.
9
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4answers
27k views

Is there a way to generate table create script in TSQL?

Is there a way to generate a create script from an existing table purely in T-SQL (that is without using SMO, since T-SQL does not have access to SMO). Let's say a stored procedure that receives a ...
9
votes
3answers
298 views

What is the use of restore headeronly when performing a backup?

When I monitor my backups with the following query: SELECT command, percent_complete, 'elapsed' = total_elapsed_time / 60000.0, 'remaining' = estimated_completion_time / ...
9
votes
1answer
896 views

Could a null column be part of a primary key?

I'm developing a SQL Server 2012 database and I have a question about a One-to-Zero-Or-One relationship. I have two tables, Codes and HelperCodes. A code could have zero or one helper code. This is ...
9
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3answers
533 views

Backup internals - What happens when a backup job is running - in terms of locking and performance overhead in SQL Server?

For MySQL I know the database is backed up table by table in SQL Statements, this results in locking and if you update columns while backing up you might end up in integrity problems. To my ...
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2answers
30k views

SQL Server 2012 Restore backup to new DB Name

I seem to remember that, in 2008, you could restore a backup to a new copy of a DB, by changing the name in the "Destination Database" field from the restore-wizard. It would create a brand new DB, ...
9
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1answer
339 views

What is the different between compression on the PK vs. on the Table?

Data compression can be set on the table: CREATE TABLE dbo.SomeTable( SomeId [bigint] NOT NULL, OtherId [bigint] NOT NULL, IsActive [bit] NOT NULL, CONSTRAINT [PK_Some] PRIMARY KEY ...
9
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3answers
6k views

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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2answers
2k views

Do natural keys provide higher or lower performance in SQL Server than surrogate integer keys?

I'm a fan of surrogate keys. There is a risk my findings are confirmation biased. Many questions I've seen both here and at http://stackoverflow.com use natural keys instead of surrogate keys based ...
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3answers
3k views

Get transactions that failed or were never committed

Is there anywhere I can look to find failed transactions in SQL server 2012?
9
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5answers
267 views

Getting a scan though I expect a seek

I need to optimize a SELECT statement but SQL Server always does an index scan instead of a seek. This is the query which, of course, is in a stored procedure: CREATE PROCEDURE dbo.something ...
9
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2answers
2k views

What effect will reducing the size of a varchar column have on the database file?

We have a number of tables in our database that have VARCHAR(MAX) columns where a VARCHAR(500) (or something much smaller than max) will suffice. Naturally I want to clean these up, and get the sizes ...
9
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6answers
33k views

Error 3154 while restoring a backup using WITH REPLACE

I have SQL 2012 with SP1 installed on my computer. I made a backup of a database test.bak. I have a database with the name test2 which is the same database, but the data changed. I want to restore ...
9
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2answers
4k views

How to flatten results of a table with two related “many” tables?

I've reorganized some tables in my database to be more flexible but I'm not really sure how to write the SQL to extract meaningful data from them. I have the following tables (somewhat abbreviated ...
9
votes
1answer
253 views

Recursive sql query performance issue [closed]

This is the sixth time I'm trying to ask this question and it's the shortest one too. All the previous attempts were resulting with something more similar to a blog post rather than the question ...
9
votes
3answers
771 views

Find the identity of the client firing a query in SQL Server without using triggers?

I'm currently using Change Data Capture (CDC) to track data changes, and I wish to track the host name and IP address of the client submitting the query that made the changes. If there are 5 different ...
9
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1answer
695 views

“truncate log on checkpoint” option in SQL Server

Long story but our long term consultants (former employees) wrote a custom script years back (2006 or so) to interface with Tivoli Storage Manager and it appears to be checking for a SQL Server DB ...
9
votes
1answer
904 views

Sequence is reusing

I have a sequence that generates tracking numbers for objects in my system. It had been working fine for quite some time. Last week we noticed that it was starting to re-use values. What seems to ...
9
votes
2answers
106 views

How to specify SQL startup parameters in quiet installation via command line

I want to fix the identity gap bug in SQL Server 2012 via the -T272 startup parameter. How can I automate this after installation? I found no install parameter for startup parameters.
9
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1answer
2k views

SSIS 2012 Create environment variable fails

I'm working a script to port an Environment from one server to another. I am running into an issue calling catalog.create_environment_variable wherein I get the error "The data type of the input value ...
9
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1answer
142 views

Why does SQL Server refuse to update these statistics with anything but fullscan?

I noticed a relatively long running (20 min+) auto update statistics operation in a daily datawarehouse build. The table involved is CREATE TABLE [dbo].[factWebAnalytics]( [WebAnalyticsId] ...
9
votes
1answer
882 views

Restoring differential backup creates DEFUNCT log file?

Here is my problem. I'm trying to move a database to a new server via a full restore, then cutover with a quick differential backup/restore. I can do a full restore without a problem, but when ...
9
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1answer
3k views

Optimal placement of tempdb, mdf and ldf files in SQL Server 2012 on SSD's?

I realize this is probably a very open ended question and the answers could vary, but what is the optimal placement for the tempdb, mdf and ldf files in SQL Server 2012 when talking SSD's? ...
9
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2answers
7k views

SQL Server database design for “archived but available” data

We have this large database (>1TB) that we intend to "shrink". The database revolves around one main entity, let's call it "Visit". For discussion, let's say it is a database for a medical practice. ...