The vast majority of us never work on high volume systems. And I mean high volume systems, like backing a web server that gets millions of hits in a few minutes, which might result in tens of millions of database queries in the same amount of time.
What is the best way to return the "duration" of an event in SQL, given the start and end datetime values? How can we add up these durations to return grand totals? What data types should be used to return this data to our clients? How do we handle overflows, such as when hours go over 23 or minutes total up to over 59? Are there any T-SQL functions or other techniques that are useful in these scenarios?
From one of the SQL Server 2005 storage engine lead developers comes this look at the impact of using the NO_LOG and TRUNCATE_ONLY options.
Performance tuning is an art or science, depending on who you talk to. SQL Server guru Joe Sack has authored a book on SQL Server 2005 T-SQL and brings us the performance tuning chapter as a preview.
Rodney Landrum demonstrates an ingenious way to monitor blocked SQL Server processes across all your servers, using nothing but SSRS.
This installment illustrates how to use PowerShell in conjunction with SMO to display object properties of all SQL Server Objects.
Longtime SQL Server author Raj Vasant brings us a technique for delivering databases along with an application. As more and more systems take advantage of SQL Server or Express, this is a technique that can come in very handy.
A look at some of the more interesting stories from a database perspective.
When designing your SQL Server 2005 Analysis Services (SSAS) dimensions and related attributes—appropriately called attribute relationships—you should consider how changes in your dimension data will affect the underlying dimension aggregations and, in turn, processing and query performance.
Every organization I talk to has the same problem dressed up in different clothes....
By DataOnWheels
I am delighted to host this month’s T-SQL Tuesday invitation. If you are new...
By alevyinroc
Ten years (and a couple jobs) ago, I wrote about naming default constraints to...
Comments posted to this topic are about the item The day-to-day pressures of a...
Comments posted to this topic are about the item The Problem Isn't Always Your...
Comments posted to this topic are about the item Identity Defaults
What happens when I run this code?
CREATE TABLE dbo.IdentityTest
(
id int IDENTITY(10) PRIMARY KEY,
somevalue VARCHAR(20)
)
GO
See possible answers