Phil Jacobs

Phil began his career as a Member of the Technical Staff at Bell Labs. For the last 24 years he has worked at Moody's Investors Service where he is currently Vice President - Senior Database Developer in the Analytic & Technology Solutions Group supporting Structured Finance. Phil holds a Sc.B. in Computer Science from Brown University and a M.S. in Computer Science from Purdue University.

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.

5 (3)

2021-05-07 (first published: )

5,227 reads

Blogs

Techorama 2022 Slides

By

I had a great time at Techorama. I’ll do a writeup on the event,...

Daily Coping 27 May 2022

By

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

Daily Coping 26 May 2022

By

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

Read the latest Blogs

Forums

The 2022 Preview

By Steve Jones - SSC Editor

Comments posted to this topic are about the item The 2022 Preview

OLE DB provider \"SQLNCLI11\" for linked server

By EasyBoy

We have a DTS package running on one of the production server. This is...

Need to provide access to database without giving access to production

By gray6

Hoping I could find some best practice answers here: We have analysts who need...

Visit the forum

Ask SSC Logo Ask SSC

SQL Server Q&A from the SQLServerCentral community

Get answers