SQLServerCentral Editorial

Non-Stop Learning

There was a recent discussion in the forums here at SQL Server Central regarding the difficulties presented by the constantly shifting technology landscape. The core question was, how on earth do you master stuff? Especially, how do you master things when they're both new and constantly changing? Honestly, you don't. I mean, you can, but […]

SQLServerCentral Article

Optimize Your SQL by Reformulating the Spec

As SQL developers, we tend to think of performance tuning in terms of crafting the best table indices, avoiding scalar and table valued functions, and analyzing query plans (among other things). But sometimes going back to the spec and applying some properties of elementary math can be the best way to begin to improve performance of SQL queries which implement mathematical formulas. This article is a case study of how I used this technique to optimize my SQL implementation of the Inverse Simpson Index.

Blogs

Who Are You Doing It For?

By

But as I've matured over the years, I came to realize that I needed...

Presenting Twice in May 2026

By

I will be presenting my latest session, Documenting Your Work for Worry-Free Vacations, in-person...

Finding the Next Sequence Value: #SQLNewBlogger

By

I saw a question asking about the next sequence value and decided to try...

Read the latest Blogs

Forums

DB Design Methods

By mjdemaris

I've read a few posts regarding what we use to design DB models and...

Auto Update Statistics not triggering on filtered indexes

By Leo.Miller

I've got a table with 186,703,969 rows, about 300GB of data. There are several...

What is the difference between SQL Server and SQL Database?

By kamiiteore

I created a SQL Database in Azure Portal but I've just noticed it also...

Visit the forum

Question of the Day

An Unusual Identity

What values are returned when I run this code?

CREATE TABLE dbo.IdentityTest2
(
     id NUMERIC(10,0) IDENTITY(10,10) PRIMARY KEY,
     somevalue VARCHAR(20)
)
GO
INSERT dbo.IdentityTest2
(
    somevalue
)
VALUES
( 'Steve')
, ('Bill')
GO
SELECT top 10
 id
 FROM dbo.IdentityTest2

See possible answers