This tag is for SQL Server 2012, major build version 11.00.xxxx.

learn more… | top users | synonyms (2)

8
votes
2answers
6k views

Sql Server 2012 data warehousing and different versions

With Sql Server 2012 there are 3 flagship editions: Enterprise Edition, Business Intelligence, Standard. The full comparison between the three: ...
8
votes
3answers
4k 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.
8
votes
1answer
1k views

How to move a database from SQL Server 2012 to SQL Server 2005

What are my options if I need to move a database from SQL Server 2012(32bit) to SQL Server 2005(64bit)? I know I cannot: restore a backup of the database on SQL Server 2005 detach & attach I ...
8
votes
2answers
233 views

Are “out of the row” fields read when a clustered index is used?

I know that when VARCHAR(MAX)/NVARCHAR(MAX) columns are used the data is stored out of the row - the data row will have a pointer to another location where the 'large value' is stored. I have the ...
8
votes
2answers
4k 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 ...
8
votes
1answer
424 views

Re-run a specific actual query plan

I have captured an actual query plan for a specific query. After this I've changed a few things around (including updating the statistics) and re-ran that specific query. Now the actual query plan ...
8
votes
3answers
4k 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 ...
8
votes
2answers
942 views

In SSIS 2012, what is the purpose of flagging a package as an “Entry Point” package

In the Visual Studio designer you can right click on a SSIS package and designate it as an "Entry Point" package" Doing a search I found this page on MSDN which states: The value of 1 signifies ...
8
votes
2answers
1k 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 ...
8
votes
2answers
368 views

Shouldn't SQL Server Support RANGE?

As someone who develops websites and does a bit of SQL Server, it seems a no brainer to me that SQL Server should support a simple clause that indicates the results should only include a specific ...
8
votes
5answers
7k views

Freeing Unused Space SQL Server Table

I have a table in SQL Server Express with a lot of unused space. I need to free up space in the database. | NAME | ROWS | RESERVED | DATA | INDEX_SIZE | UNUSED | ...
8
votes
3answers
898 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 ...
8
votes
2answers
324 views

SQL Server : how to create user with access only from specific HOSTNAME or IP addres

I have one stupid app which I rely on, which has hardcoded connection string inside. To increase security of my SQL Server I'd love to make SQL users same as one hardcoded inside app, but I want to ...
8
votes
1answer
1k views

Can Availability Groups provide seamless failover (with no query failures)?

I have been testing the Availability Groups feature in SQL Server 2012 and am finding that there is approximately 15 seconds of down time when the primary server fails over to the secondary server. ...
8
votes
1answer
8k views

Detecting the locked table or row in SQL Server

I'm trying to understand/learn how to track down the details of a blocked session. So I created the following setup: create table foo (id integer not null primary key, some_data varchar(20)); ...
8
votes
1answer
510 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 ...
8
votes
2answers
2k views

Creating index on computed field: string or binary data would be truncated

I have a table Foo with the following fields: ID bigint not null identity(1,1), SerializedValue nvarchar(max), LongValue as TRY_CAST(SerializedValue as bigint) Now I want to create an index on ...
8
votes
1answer
295 views

Are the cost percentages in this SQL Server plan over 100% for a valid reason?

I'm looking through the plan cache, looking for low-hanging optimization fruit and came across this snippet: Why are many of the costs listed above 100% ? Shouldn't that be impossible?
8
votes
3answers
12k views

Upgrade process from SQL Server 2000 to SQL Server 2012

I have a SQL Server 2000 database that I would like to upgrade to SQL Server 2012 (running on a different server). I don't think there is a direct upgrade path, but if there is, what is it? My ...
8
votes
2answers
106 views

Getting a realistic query plan when partitioning with low volumes of data

We're using partitioning to reduce the amount of blocking our OLTP system experiences due to locks, with a partition scheme that splits the working tables into 100 partitions based on a customer id. ...
8
votes
1answer
1k 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 ...
8
votes
1answer
1k 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 ...
8
votes
1answer
630 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 ...
8
votes
1answer
1k views

Is SQL Server data compression categorically good for read-only databases?

Some literature on SQL Server data compression I read state that the write cost increases to about four times what would normally be required. It also seems to imply that this is the primary downside ...
8
votes
2answers
1k views

Handling time zones in data mart/warehouse

We are starting to design the building blocks of a data mart/warehouse and we need to be able to support all time zones (our clients are from all over the world). From reading discussions online (and ...
8
votes
2answers
3k 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. ...
8
votes
1answer
194 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 ...
8
votes
0answers
248 views

Troubleshooting THREADPOOL Waits [closed]

From everything I have read, THREADPOOL waits occur when a task is waiting for a worker thread. A high amount of THREADPOOL waits typically means you are running out of available worker threads. ...
7
votes
2answers
2k views

Is there a better option than Union All for multiple selects from the same row?

Example Schema: CREATE TABLE [dbo].[Base]( [ID] [int] IDENTITY(1,1) NOT NULL, [Option1ID] [int] NULL, [Option2ID] [int] NULL, [Option3ID] [int] NULL, [Option1Name] [varchar] NULL, [Option2Name] ...
7
votes
1answer
822 views

SSIS organization

I'm familiar with SSMS, but I've never used .net, c# or visual studio (been doing other things: Assembler, c, unix, vi, oracle, etc). I'm trying to figure out basic 2012 SSIS ETL (no BI or data ...
7
votes
2answers
1k views

Securely generate a UNIQUEIDENTIFIER in SQL Server

I intend to be using a UNIQUEIDENTIFIER as an access key that users can use to access certain data. The key will act as a password in that sense. I need to generate multiple such identifiers as part ...
7
votes
2answers
528 views

How can I reliably determine if a given SQL Server instance has the “Lock Pages in Memory” right?

The "Lock Pages in Memory" right can be granted to the service account used by SQL Server. This allows SQL Server to prevent memory being paged to disk. I've noticed several of our SQL Server ...
7
votes
1answer
847 views

Why 0 is equal to empty string?

I need some help in finding why the following T-SQL statement returns 1 (true): SELECT IIF( 0 = '', 1, 0) I guess someone has change an ANSI option like SET ANSI_NULLS or something else that is ...
7
votes
3answers
10k views

Visio 2010 and SQL 2012 - Reverse Enginnering

We have upgraded to SQL 2012 and Am trying to reverse engineer our Dbs into Visio 2010. I setup a connecting using SQL 11 driver and Visio complains that that driver is not supported. Any one run ...
7
votes
2answers
765 views

Can Availability Groups replace transactional replication?

I've been looking at the new features of SQL Server 2012, and how it can help my current situation. Currently we're on SQL Server 2008 R2, and replicate two OLTP servers' databases to a single ...
7
votes
1answer
2k views

Direct the OUTPUT of an UPDATE statement to a local variable

I would like to do this : DECLARE @Id INT; UPDATE Logins SET SomeField = 'some value' OUTPUT @Id = Id WHERE EmailAddress = @EmailAddress -- this is a parameter of the sproc Is this even ...
7
votes
3answers
1k views

SQL Server 2012 Standard Edition - multiple instances and memory utilization

If we have multiple instances of a SQL Server 2012 Standard Edition (which has a 64 GB memory limit) on one server which has 192 GBs of RAM, do both instances only have access to the first 64 GBs of ...
7
votes
2answers
820 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 ...
7
votes
3answers
1k views

Get transactions that failed or were never committed

Is there anywhere I can look to find failed transactions in SQL server 2012?
7
votes
1answer
155 views

How does SQL Server's optimizer estimate the number of rows in a joined table?

I am running this query in the AdventureWorks2012 database: SELECT s.SalesOrderID, d.CarrierTrackingNumber, d.ProductID, d.OrderQty FROM Sales.SalesOrderHeader s JOIN ...
7
votes
1answer
1k views

How does SQL Server generate a query execution plan that adds up to 6,000%? [duplicate]

Today I was on The Heap and was looking at a query plan for something I thought could be improved. However, it created something that shook my belief in the SQL Server query optimizer. Can I still ...
7
votes
2answers
3k views

How might a corrupt partition in TempDB result in DBCC CHECKDB reporting no issue?

One of our SQL Servers reported the following error recently: DATE/TIME: 2/25/2013 9:15:14 PM DESCRIPTION: No catalog entry found for partition ID 9079262474267394048 in database 2. The ...
7
votes
1answer
3k views

How do I fix SQL Server assembly optimization errors and memory exhaustion?

The .NET Runtime Optimization Service (mscorsvw) keeps consuming all my workstation's memory since I installed SQL Server 2012 Service Pack 1. It consumes about 1.6 GB of memory before exhausting all ...
7
votes
1answer
222 views

T-SQL - OPTION (FAST x) and trace flag 8722

I have searched a long time and still haven't found the answer to my problem. Our Dynamics AX is generating queries with the query hint OPTION (FAST x), which sometimes forces a bad execution plan to ...
7
votes
2answers
6k views

Create database role to allow read access to all tables; write access to some

We have a database with over 1000 tables. I need to create a role that allows read only on all tables, as well as write access to two specific tables. I was messing around with database roles, but ...
7
votes
1answer
62 views

very poor cardinality estimate on a geometry intersection

I'm intersecting a point with a set of polygons. The query is indexed, and the polygons do not overlap but the query plan seems to think that instead of 1 row, i'll return 18k rows, and this results ...
7
votes
1answer
2k views

Timeout expired error while using copy database wizard

Microsoft made me believe that SQL Server 2012 Copy Database Wizard is the most optimal way of copying a SQL Server 2000 database to SQL Server 2012. After struggling a few hours, I was able to get ...
7
votes
3answers
1k views

SQL Server 2012 Simple Recovery Model with LOG_BACKUP log_reuse_wait_desc

While I'm doing my own investigation, does anyone know why a database in SIMPLE recovery model has a LOG_BACKUP for the log_reuse_wait_desc? SQL Server 2012 SP1. No replication, no mirroring, no log ...
7
votes
1answer
750 views

Query plan cache bloated by ad-hoc queries, even with “Optimize for Ad-hoc Workloads”

I've been noticing what I thought to be unusual issues with our query plan cache, where the plans in the cache were never more than a day old. Through running the following query (courtesy of ...
7
votes
1answer
22k views

How to uninstall SQL Server Management Studio 2012? [closed]

How to uninstall SQL Server Management Studio 2012? ControlPanel's "Uninstall or change programs" (in Windows 7 Prof) gives a row of entries: while internet search results always tell: "click ...