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  • Stairway to T-SQL DML Level 11: How to Delete Rows from a Table

    You may have data in a database that was inserted into a table by mistake, or you may have data in your tables that is no longer of value. In either case, when you have unwanted data in a table you need a way to remove it. The DELETE statement can be used to eliminate data in a table that is no longer needed. In this article you will see the different ways to use the DELETE statement to identify and remove unwanted data from your SQL Server tables.

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  • SQL Server 2012 Integration Services - Implementing Package Security using Access Control

    SQL Server 2012 Integration Services offers a wide range of powerful features that allow you to streamline and automate tasks involving data extraction, transformation, and loading. However, incorporating these features into your existing business intelligence framework frequently necessitates additional security measures ensuring that data which is being processed remains protected from unauthorized access.

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  • How to Evict a Failed Node and Add it Back to SQL Server 2005 Cluster

    Adding and removing nodes in SQL Server Clusters is not so difficult, and instructions on how to do so abound on the internet. However, mismanagement when adding/removing nodes can quickly become a 'gotcha' that wastes time. Bo Chen offers insight into some of those scenarios that are not normally covered in the standard online documents.

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  • How to Optimize Stored Procedures

    - by Derek D.
    There are many factors to speeding up stored procedures. Knowing these in advance can save you and your company many hours of headaches. Using these practices when writing procedures, you can turn your SQL Server into a fine-tuned machine. This tutorial will cover the specifics to help you tune your procedures optimally. Know [...]

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  • Stairway to T-SQL DML Level 9: Adding Records to a table using INSERT Statement

    Not all applications are limited to only retrieving data from a database. Your application might need to insert, update or delete data as well. In this article, I will be discussing various ways to insert data into a table using an INSERT statement. Need to share database changes?Keep database dev teams in sync using your version control system and the SSMS plug-in SQL Source Control. Learn more.

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  • Using SQL Server Concatenation Efficiently

    This article shares some tips on using concatenation efficiently for application development, pointing out some things that we must consider and look at when concatenating values or fields in our queries or stored procedures. NEW! Never waste another weekend deployingDeploy SQL Server changes and ASP .NET applications fast, frequently, and without fuss, using Deployment Manager, the new tool from Red Gate. Try it now.

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  • SQL Azure - Creating backups and copies of your databases

    As a DBA you always followed a practice to back up your database (or take a snapshot of your database) before making any changes so that you can revert to your old database state if something goes wrong. Also to setup a development or test environment you use a backup of your database and restore it in the respective environment. If you are moving to SQL Azure, what would you do in these cases as backup / restore and database snapshots are not supported as of now?

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  • New SQL Monitor Custom Metric: Database Autogrowth

    This metric for Red Gate SQL Monitor measures the number of database autogrowth events (data file or log file) in the last hour. Too many autogrowth events causes disk fragmentation which requires a change in the autogrowth settings of a database. ‘Disturbing Development’Grant Fritchey & the DBA Team present the latest installment of the Top 5 hard-earned lessons of a DBA – read it now

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  • Help us improve SQL Source Control

    We've been working really hard on SQL Source Control, and need your input. We're currently working on suggestions from our user forum and on an updated migrations feature that supports all source control systems and works across branches. We'd love it if you could spare 10 minutes to complete this survey. If you complete the survey by Friday June 14, you could win a $100 Amazon voucher. There are two up for grabs!

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  • Simplified Restores with SQL Server 2012 Recovery Advisor

    Occasionally, a DBA may need to restore a database from a multiple backup files that originated from multiple servers. This requirement might arise, for example, in a database-mirroring configuration, where backups may be from either of the servers. Get smart with SQL Backup ProGet faster, smaller backups with integrated verification.Quickly and easily DBCC CHECKDB your backups. Learn more.

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  • AlwaysOn Availability Groups in SQL Server 2012

    This article discusses and demonstrates AlwaysOn Availability groups in SQL Server 2012, a new feature for high availability. Keep your database and application development in syncSQL Connect is a Visual Studio add-in that brings your databases into your solution. It then makes it easy to keep your database in sync, and commit to your existing source control system. Find out more.

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  • Stairway to SQL Dialects Level 3: MySQL

    As part of the LAMP stack, MySQL is incredibly important for providing a reliable and platform-agnostic database platform for web development. This level looks at the syntax of MySQL and how to best port SQL code to a MySQL environment. NEW! The easiest way to deploy .NET codeDeploy ASP.NET applications fast, frequently, and without fuss, using Deployment Manager, the new tool from Red Gate. Try it now.

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  • Which CPU for SQL Server machine (Xeon, i5, i7, AMD Phenom)?

    - by Tony_Henrich
    I am going to build a full height server machine to be used for SQL Server 2008 64bit. I have $400 to spend for a CPU. Which CPU should I get among i5, i7, Xeon and Phenom in terms of performance. There are so many options and I am out of touch with the latest stuff. All I know I want something fast and works with DDR3 fast memory and works with some kind of fast system bus. I don't care about overclocking, 3D & gfx benchmarks. The machine is not used for games and gfx apps. Any recommendations?

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  • SharePoint 2010 Server Configuration Error -> "Cannot connect to database master"

    - by Chrish Riis
    I recieve the following error when I try to configure SharePoint 2010 Server: "Cannot connect to the database master at SQL server at [computer.domain]. The database might not exist, or the current user does not have permission to connect to it." I run the following setup: Windows Server 2008 R2 Standard with SP1 and all the updates SQL Server 2008 R2 with SP1 SharePoint Server 2010 with SP1 Everything is installed on the same server (it's a testserver) I have tried the following: Rebooting the server Checking the install account's DB rights (dbcreator, securityadmin - I even let it have sysadmin) Opened up the firewall on port 1433 and 1434 Uninstalled both SQL and SP, then reinstalled the both Enabled all client protocols in SQL Server Configuration Made sure I used the correct account for installing SharePoint (local admin) Useful links: TCP/IP settings – http:// blog.vanmeeuwen-online.nl/2010/10/cannot-connect-to-database-master-at.html http:// ybbest.wordpress.com/2011/04/22/cannot-connect-to-database-master-at-sql-server-at-sql2008r2/ Wrong slash - http:// yakimadev.com/2010/11/cannot-connect-to-database-master-at-sql-server-at-serverdbname-error-during-sharepoint-2010-products-configuration-wizard-and-installation/ Port error - http:// www.knowsharepoint.com/2011/08/error-connecting-to-database-server.html

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  • Is ODBC on Windows 2003 slower than on Windows 7?

    - by nbolton
    I am seeing some MSSQL 2005 performance issues, and I am trying to diagnose the cause. I am using SQL profiler to gather query execution times. Both the client (using ODBC), and the SQL server are running on Windows 2003. I am also using Windows 7 (client) with a different Windows 2003 server to compare results. Windows 7 client / Windows 2003 server: SQL management studio: 393ms Through ODBC: 215ms Windows 2003 client: SQL management studio: approx 155ms Through ODBC: 3145ms ... in both cases, I'm running SQL management studio on the client. To me, these figures suggest there's something wrong with the ODBC client on the Windows 2003 server. On Windows, I see that the ODBC "SQL Server" driver is version 6.01.7600.16385 but on Windows 2003, it is 2000.86.3959.00 (by default). Could this be the problem? Is it possible to update an ODBC driver?

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  • aligning truecrypt partition on 1.5TB 4kB sector drive

    - by pQd
    hi, aligning partitions to start at real physical sector of ssds / stripped raids / 4kB drives is a 'good thing to do'. but i've run into a problems when trying to do it for a truecrypt partition that will contain ext3 on it. or so it seems. when drive is question is partitioned properly and formatted with ext3 i get very reasonable write speeds around 70-80MB/s, but when i put truecrypt and ext3 on the top of it write performance becomes very unstable and goes between 1-25MB/s with very high io-wait. on the same server i dont have any performance issues with ext3 on the top of truecrypt on regular 512B-sector 500GB sata disks. so my best guess is that iowaits are caused by misalignment but i cannot really find reliable information on how to calculate optimal partition beginning. i've tried to start it at 128 logical sector, i've also tried 8132 sector as suggested here but both gave me very bad and unstable performance. do you have any experience with similar setup? thanks!

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  • What is Peformance Monitor telling me when my page faults / second are high?

    - by David Robison
    I have a Windows 7 x64 computer that is having performance issues. After some investigation, I have discovered that the page faults / second on it, as reported by Performance Monitor, are really high. Everything else seems to be normal. Resource Monitor reports no hard faults and lots of available memory. Is this a potential cause for problems, or is it a red herring? If it is something that could be causing problems, what should I do next to figure out what is causing it? Here is a screen shot of the Performance Monitor. Notice that the average page faults / second is 75,887. On another computer that does not have problems, this number is closer to 3,000. Here is a screen shot of the Resource Monitor, sorted by hard faults / second, which is currently 0 for all processes.

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  • When to use Nginx PHP Fast CGI with a TCP socket instead of a UNIX socket?

    - by user64204
    I've followed this guide to setup PHP in FastCGI mode with Nginx. This guide describes 2 ways of doing it: TCP socket and UNIX socket. I've ran some Apache Benchmark on my locale machine and here are the results: Below tests ran multiple times to get better average statistics: $ ab -c 200 -n 100000 http://.... APACHE: 1800 req/sec NGINX (TCP socket): 2500 req/sec NGINX (UNIX socket): 15000 req/sec As far as I understand, there is overhead with using a TCP socket rather than a UNIX socket, hence the better performance with the latter. However I was not expecting such a performance difference given that the TCP socket is on the localhost, and therefore would like to ask the following question: Q: Given the huge performance gain with using a UNIX socket, what are the configuration scenarios where it would make sense to use a TCP socket instead?

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  • Processor upgrade on a laptop vs. Ram upgrade. Also does ram always matter?

    - by Evan
    I have a Dell Inspiron 14r (N4110) with an Intel Core i3 and 4gb of ram. It runs very smoothly, however gaming on this laptop is very limited. This is mostly because of integrated graphics but i have seen a computer with a Core i5, and very similar specs otherwise, run games that the N4110 cannot. This other computer has integrated graphics and 6gb of ram. I am wondering whether upgrading ram or upgrading the processor make the most difference in performance. Which setup would get better performance, an i5 with 4gb of ram or an i3 with 8 gb of ram? (Both with integrated graphics) Also, is there a certain point at which you have too much ram for the computer to ever possibly use? For instance is there really any difference in performance between 8 gb and 16 gb of ram?

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