Index Seek vs Index Scan
The question comes up when looking at an execution plan of whats the difference between an index seek and an index scan. What it really comes down to is speed, for tables with a large number of rows, and …
MSG 128, Level 15, State 1 – not permitted in this context
Default Values and Computed Columns In SQL Server 2008, I was presented with the following error when attempting to create a table that has a default value that references other columns in the same table. Msg 128, Level 15, State …
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Big One Time Use Queries – Revisited
Just the same query that I posted months ago, but this time it is wrapped in a stored proc. I use this one often enough that it is easier to just call the stored proc. Download the FindOneTimeUseQueries source code. TSQL example: …
Big One Time Use Queries
There is a newer version of this posting, click here. Part of my regular database maintenance or tuning routine is to look for the queries with cached plans that are taking up the most space, and have only been used …
Indexing Presentation – The Basics
Attached is the slide deck for a short presentation on indexing that was created to educate software developers on the basics of indexing. Outline: What is an Index Types of Indexes Non Clustered Indexes Clustered Indexes When To Avoid A …
SQL Server 2008 R2 Compatibility Levels
There was no change to the compatibility levels between SQL Server 2008 and SQL Server 2008 R2. SQL Server can run in a number of different compatibility levels, but how do you change it and how do you set it. …
What is SQL Server?
Originated as Sybase SQL Server Acquired by Microsoft and named Microsoft SQL Server in 1989 Recent Versions (2005, 2008, and 2008 R2) But what is it? A system for managing large amounts of data Provides a language TransactSQL (T-SQL) to …
Notes from the Introduction to SQL server class.
Here are the slide decks from the Introduction to SQL Server class – January 2010. Class 1 About the Instructor Introduction and Class Overview (Review Syllabus) Course Logistics – What to expect and what is expected What is SQL Server? …
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Moving to a new datacenter – EPIC FAIL – Fibercloud.
The current datacenter has failed. The company that we have been using Fibercloud in Bellinhgam WA, with their “Always On” slogan has had an epic failure. Server temp of 117 degrees F means that it is time to move to …
Moving to a new datacenter – EPIC FAIL – Fibercloud. Read more »
Windows Shake in Windows 7
If you are using Windows 7, give this a try. When you have multiple windows all visible on your desktop, just click on the title bar of one of the windows. While holding your mouse button down “Shake” that window …