Performance tuning

SQLServerCentral Article

Optimize Your SQL by Reformulating the Spec

  • Article

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.

5 (3)

2021-05-07 (first published: )

5,227 reads

The Basics - Level 1 of the Stairway to Query Store

  • Stairway Step

Introduction Instead of going straight into the topic of the Query Store, I would like to start this Stairway Series by mentioning a few performance tuning scenarios that are very common to production DBAs. I think most of us have been in one of these situations at some time: An application experiencing slowness after a […]

4.8 (5)

2020-10-07 (first published: )

5,927 reads

Blogs

VMware & SQL Server 823-824 alerts

By

We’ve been tracking a weird state with SQL Server virtual machines on VMware and...

Daily Coping 18 May 2022

By

I started to add a daily coping tip to the SQLServerCentral newsletter and to...

Storage Field Day 23 – SIOS

By

I am thrilled to have been a part of this year’s Storage Field Day...

Read the latest Blogs

Forums

Strange Issue With Data Corruption

By planetmatt

Our Reporting process works like this 00:00 - SQL Takes it's daily Full backup...

How do we populate missing values from last available data?

By T.Ashish

Hi There, I am working on a query where I need to convert some...

need some help in tweaking a query

By bobrooney.81

Hi All, I am looking for some tsql help. I am from Oracle background....

Visit the forum

Ask SSC Logo Ask SSC

SQL Server Q&A from the SQLServerCentral community

Get answers