Phil Jacobs

Phil began his career as a Member of the Technical Staff at Bell Labs. He worked in IT at Moody's Investors Service for 27 years supporting Structured Finance, his last position being Vice President - Senior Database Developer, and he is currently a senior SQL development engineer at Dynamic Healthcare Solutions. 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)

You rated this post out of 5. Change rating

2021-05-07 (first published: )

5,376 reads

Blogs

Can I Change a Primary Key Value? #SQLNewBlogger

By

I heard someone say recently that you can’t change a primary key value in...

SQL Server Index Primer

By

Indexes 101: What, Why, and When? “What Is an Index?” I get this question...

Secure Azure SQL Server Backups Using Managed Identities

By

I do believe most people know about the ability to backup your SQL server...

Read the latest Blogs

Forums

Update particular record in a table

By dhanekulakalyan

I need to update greatherthan8 (category) record to Missing (status) if the same member...

Internationalisation

By julian.fletcher

Quick one I hope in case I'm heading off in entirely the wrong direction!...

Size of DB on physical disk doesn't match Disk Usage by Table report

By water490

Hi everyone I am looking at the size of my db on disk (ie...

Visit the forum

Question of the Day

Getting the TEXTSIZE

How can I check what value I used for TEXTSIZE? I ran this code:

SET TEXTSIZE 8096
But then deleted the code and couldn't remember. Is there a way to check this?

See possible answers