Microsoft's SQL Server is a relational database management system (RDBMS) that runs as a server providing multi-user access to a number of databases. It originated from the Sybase SQL Server codebase, which is why both products use the extension of SQL called Transact-SQL (T-SQL).

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14
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3answers
10k views

How does shrinking a SQL Server log file affect performance?

I have a SQL Server 2008 database that has a data file of some 2GB in size, but the log file is over 8GB. With pre-2008 databases I could use the 'Backup log' and the TRUNCATE_ONLY option but this is ...
2
votes
1answer
441 views

SQL Server Logon Trigger causing problems with the Distributed Transaction Coordinator

I've created the following simple logon trigger on my SQL Server 2005: CREATE TRIGGER LOGON_RESTRICTION ON ALL SERVER FOR LOGON AS BEGIN PRINT 'Hello World' END GO Which seems to be working fine ...
8
votes
5answers
8k views

Pros/Cons Using multiple databases vs using single database

Working on a new project which has the requirement to use 7 databases. Arguing performance, stability, optimization is easier implemented. While I don't agree I'm having trouble collecting good ...
3
votes
1answer
86 views

How do you move a Database from one server to the other using MS-SQL-SMS

I need to move a database, but I want to make sure I do it safely and with all triggers, store proc and functions. I was think to simply detach the database from my server using MS-SQL-SMS and move ...
3
votes
3answers
831 views

Does this computed CHECKSUM() index design make sense?

I have come across what looks to me like a slightly odd pattern in a SQL Server 2005 database I'm taking care of, and was wondering whether it's just me, or whether it really is odd. There are a ...
1
vote
2answers
2k views

Distributed Transactions between SQL Server 2000 & MySQL Stopped Working

We have been successfully copying data from a MySQL Slave database into a SQL Server 2000 database. The MySQL server is a linked server. I have tried using v3.51 and v5.1.8 of the ODBC connector ...
2
votes
1answer
208 views

Query table A for any rows that are like any search term in table B

I need some help writing a select statement (I still don't think in sets!). Here's the scenario: I have table A with column "Name varchar(20)". I have table B with column "SearchTerm varchar(20)". I ...
8
votes
2answers
3k views

SQLCMD Mode in SSMS and @@variable expansion

When using the SQLCMD mode withing SSMS (not from the commandline), is there a way to assign the current server and instance to a variable? This is different and distinct from assigning ordinary TSQL ...
6
votes
1answer
1k views

Why "Select * into targettable from sourcetable “ is faster than “insert into targettable select * from sourcetable

This title is the question. I am curious to know the answer. Someone told select into is minimally logged in Simple recovery model database ... I didn't get into it at all. Excerpt from Microsoft: ...
1
vote
1answer
716 views

Is it possible to make schema changes on a replicated subscriber database?

I have a table that is published via transactional replication. A developer has requested modifying the subscribed table to add a column that is to be used for reporting purposes. The column will be ...
8
votes
9answers
2k views

Which DBMS are fast enough for an online game (few thousand players)?

I'm currently making an MMORPG game, which could have a few thousand players online at the same time (probably not; just wishful thinking). First we wanted to use MySQL, but I have heard it isn't fast ...
6
votes
3answers
9k views

Why is a .bak so much smaller than the database it's a backup of?

I just took a backup of a SQL Server database. The MDF and LDF files together total around 29 GB, but the .bak file was only 23 GB, about 20% smaller. My first guess when one version of a set of ...
5
votes
1answer
721 views

LDF and MDF file sizes for a dynamically created Database

I am creating a dynamic database from C# code, and would like the database to have a fixed size (for example 5 GB). While creating the DB through code, I need to specify MDF and LDF max file sizes. ...
3
votes
4answers
2k views

tempdb in sql server

Using SQL Server 2000, I am getting the following error. The log file for database 'tempdb' is full. Back up the transaction log for the database to free up some log space." How to solve it? I ...
2
votes
1answer
806 views

Update Schema in SSIS Export Package When Source Schema Changes

I have servers with lots of client databases, all with very similar, but not necessarily identical schemae. Some customers want their data in MSAccess on a monthly basis. This was getting tedious to ...
3
votes
2answers
427 views

How do I calculate working business minutes?

I'm working on business inteligence reports and one of my task is to create reports for time tracking. I have to report on business minutes (10 hours per day) within business week (monday to ...
2
votes
5answers
193 views

How can I store function names to be executed on a subset of rows?

I have a table, accounts, which contains the vast majority of the data I am concerned with. accountTypes contains different types of accounts (Business, Personal, etc.). I want to perform calculations ...
2
votes
4answers
117 views

Backup Scenarios

In My Computer, on C drive I have a Database of 50GB and I want to take backup of that 50 GB data to other drives D,E,F but D,E,F Drives contain only 20 GB for each. In this scenario how can i take ...
6
votes
5answers
7k views

SQL Select taking too much time to execute

It's a simple select from a temporary table, left joining an existing table on its primary key, with two sub selects using top 1 referring the joined table. In code: SELECT TempTable.Col1, ...
3
votes
1answer
503 views

Is using CRUD stored procedures against a view with NOLOCK bad?

(I am crossposting this from SO on the suggestion of a commenter) Our DBAs have created a pattern where our database layer is exposed to EF via views and CRUD stored procedures. The CRUD works ...
2
votes
1answer
2k views

Tool to Convert MySQL DB to MS SQL 2005 (Especially stored procedures) [closed]

Is there any tool to convert MySql db to MS SQL 2005. I am mostly interested in converting Stored Procedures. There are 100s of procedures and writing them again in T-SQL is a big job. Thanks.
3
votes
1answer
989 views

No “Using locked pages for buffer pool” in SQL Server log

As a trial run for a client I am trying to enable the "Lock Pages in Memory" setting on my development server, but no matter what I change, I cannot get the "Using locked pages for buffer pool" to ...
1
vote
1answer
158 views

Duplicate record problem

create table #Personel ( Ad varchar(100) ) create table #Masa ( MasaAdi varchar(100) ) insert into #Personel values('deneme1') insert into #Personel values('deneme2') insert into #Personel ...
8
votes
2answers
1k views

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 ...
1
vote
1answer
772 views

Cartesian Product SQL / Inserts with multiple Values Clauses

I want to create cartesian product sql query.But,I'm getting the error.Where I wrong? alter table #Personel ( Ad varchar(100) ) alter table #Masa ( MasaAdi varchar(100) ) insert into #Personel ...
1
vote
1answer
153 views

Is it require to fill all tables inside of the database?

Now,I created upper that table and in order to test I will give 3 textboxes values as below. SqlCommand cmd = new SqlCommand ("Insert Into dbo.PrnInf(PrnName, PrnSurName, PrnEgn ) Values ...
0
votes
4answers
139 views

Find material for improvement of my SQL ability

The following part that is needed to be improved is: script T-SQL Procedure Function Problem: Where can I get material to improve my ability in SQL coding? Is there any website for downloading ...
1
vote
1answer
612 views

SQL Server: join two tables with “valid-to” dates

I have two tables like so: T1_Key, T1_Data, T1_ValidUntil 1 A 2000-01-01 1 B 2000-06-30 2 C 2005-05-31 3 D 2004-12-31 3 E ...
2
votes
2answers
323 views

Search on part of a column in a SQL Server cross-database view

I'm currently writing an application that interfaces with a 3rd party vendor's SQL Server 2008 database that I only have read access to. We have a separate database that contains cross database views ...
6
votes
1answer
7k views

Restore encrypted database to another server

I'm using a product which runs on SQLServer 2008. Understandably the company supplying it don't offer SQLServer support. When I installed the product I specified a password to encrypt the database. ...
3
votes
1answer
366 views

How does the log reader process bulk updates

Key Problem The latency we are experiencing isn't applying the changes from the Distributor to the Subscribers (if we watch Replication Monitor it's latency is usually <1 second), it is the time ...
1
vote
1answer
256 views

Table Partitioning. What is the correct process for deleting .ndf and .ldf files?

Please go easy it’s a steep learn curve.. OK steps done so far Create files, Create file groups, Create partition function, Create partition scheme, Partition table associate files with filegroups ...
5
votes
1answer
1k views

SQL Server: How to create a table that fills one 8 KB page?

Is there a way to calculate the amount of data that fills one 8 KB page in SQL Server and create a table that fills one page entirely? This kind of table is presented in in this blog post.
7
votes
1answer
8k views

Auto Update Statistics in SQL Server 2008R2: Why do some statistics remain stale despite a large number of row inserts?

During investigation of a slow query it appeared that the execution plan was exceptionally suboptimal (A nested loop performing 9 million executions of a seek where the estimated number of executions ...
10
votes
2answers
4k views

Trimming down a big SQL Server database

I have a large SQL Server 2008 test database (1.9TB) and I want to reduced its size on the disk. I have been deleting unused tables, and purging significant amounts of data, but its size on disk it no ...
17
votes
3answers
38k views

Recommended page file size for SQL 2008R2 on Windows 2008R2

This Microsoft article - How to determine the appropriate page file size for 64-bit versions of Windows Server 2008 and or Windows 2008 R2 provides guidance for calculating the page file size for 64 ...
5
votes
1answer
594 views

Indications from obscenely high Operator Costs in Query Plan?

I have a monthly ETL process that's too complicated to explain here, but basically we get a large amount of customer data, bulk load it into various tables, then run a series of build processes. The ...
8
votes
5answers
4k views

Are there tools to perform data comparison between two different schemas?

We are migrating our database to a new schema but want to validate the data has been moved correctly. Traditional data comparison tools can compare two databases for differences if the schemas are ...
5
votes
2answers
594 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
votes
4answers
845 views

How can I tell if my SQL Server DB performance is hardware-limited?

Testing an app currently under single-user load - as the test data has increased to production sizes (400k-2M rows per table), some SELECT sp's are not quite fast enough anymore (with limited test ...
2
votes
1answer
581 views

SQL Return Count of Answers with 0's for Choices from another table

My question went dead after one unhelpful answer on SO here I need this to be optimized because it will be called often. It is going into a stored procedure. I am given @slide (tblILDSlide.id) and ...
4
votes
3answers
4k views

Copy encrypted database views

I need to take a copy of a SQL Server database. The database has approx 40 views that link to other databases, and I need sample data from those views too. Also, the views are encrypted so when I try ...
18
votes
4answers
2k views

What are the consequences of setting varchar(8000)?

Since varchar takes disk space proportional to the size of the field, is there any reason why we shouldn't always define varchar as the maximum, e.g. varchar(8000) on SQL Server? On create table, if ...
3
votes
1answer
2k views

MS Access displays alle columns in SQL Server tables as “deleted”

I have created an ODBC connection to a SQL Server 2005. When I link to the tables from MS Access, some tables have only "deleted" data. This means the rows and columns are displayed, but all data ...
16
votes
7answers
43k views

Need to migrate SQL Server to MySQL

I have a database on SQL Server 2008 on a Windows server and I want to move all of the data to a MySQL database on a Ubuntu server. I have tried using the SQL Server Import and Export Wizard with the ...
8
votes
3answers
512 views

What are best practices for safely permanently deleting a database?

We have an "organic" environment, meaning people piled code on code for ten years with minimal oversight or documentation. The server I use has several databases which I believe are no longer being ...
3
votes
2answers
3k views

How to import a varbinary(max) column with bulk import?

I have a varbinary(max) column that I need to bulk import. The data I'm putting into this column is a byte[] in C#. How do I format the data in the comma-delimited file used for bulk import? In ...
30
votes
6answers
3k views

The smallest backup possible … with SQL Server

Daily we ship our SQL Server backups across the WAN. We need to minimize the size of these backups so it does not take forever. We don't mind if our backup process takes a bit longer; as it stands ...
6
votes
3answers
755 views

Suggestion for Bulk Data Import

We are working on a project which requires import data from Excel spreadsheet on daily basis. The data will be import from pre-define template and what we're thinking, first we will upload data in ...
3
votes
3answers
1k views

Suggestion required for Large Database Optimization and performance

We are creating a large database with estimated growth rate 200 million+ records per annum. The database is use for analysis purpose and we will generate different tabular and graphical reports from ...