Articles

SQLServerCentral Article

Understanding CRUD Operations on Tables with B-tree Indexes, Page-splits, and Fragmentation

Introduction Every DML transaction reads the data before it makes any changes. Not only during a SELECT query, but when you run any DML statement, insert, update, or delete, SQL Server first fetches a bunch of pages into the buffer pool locating the desired rows and changes them while synchronously writing to the transaction log […]

(6)

You rated this post out of 5. Change rating

2021-05-10

8,202 reads

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.

(3)

You rated this post out of 5. Change rating

2021-05-07 (first published: )

5,388 reads

External Article

DevOps as a bludgeon

With both personal experience and the real world evidence to back it up, Grant Fritchey says, unequivocally, a well-implemented DevOps process helps the organization. But it's not always easy to bridge a siloed organization, and sometimes organizations adopt DevOps for the wrong reasons.

2021-05-07

Blogs

2025 Wrapped for Steve

By

I’ve often done some analysis of my year in different ways. Last year I...

The Book of Redgate: Spread across the world

By

This was Redgate in 2010, spread across the globe. First the EU/US Here’s Asia...

Merry Christmas

By

Today is Christmas and while I do not expect anybody to actual be reading...

Read the latest Blogs

Forums

SQL Server 2019 - Agent job PowerShell step issue

By Pete Bishop

I have a couple of SQL Agent job steps which run PowerShell commands of...

Database security permissions save script

By Srinivas Merugu

Comments posted to this topic are about the item Database security permissions save script

Database backup job steps

By Pete Bishop

I have a SQL Agent job for backing up a set of Analysis Services...

Visit the forum

Question of the Day

The Large Encoded Value

I want to use the new BASE64_ENCODE() function in SQL Server 2025, but return a string that isn't large type. What is the longest varbinary string I can pass in and still get a varchar(8000) returned?

See possible answers