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: )

5,158 reads

Blogs

Daily Coping 18 Oct 2021

By

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

Azure Cosmos DB – HTAP using Azure Synapse Link

By

I haven’t done much blogging in the last 6 months. My last article was...

Azure Cosmos DB – HTAP using Synapse Analytics

By

I haven’t done much blogging in the last 6 months. My last article was...

Read the latest Blogs

Forums

Event log filling up with Sql error

By IT researcher

Windows event log filling up with ERROR 1 : "The activated proc '[dbo].[SqlQueryNotificationStoredProcedure-]' running...

How to do Join

By patla4u

Hello, I am looking for output where EG_RequestID = 175998968 and Reissue from paymentID...

Connect to PostgreSQL as an External Data Source using PolyBase

By JerodJ

Comments posted to this topic are about the item Connect to PostgreSQL as an...

Visit the forum

Ask SSC

SQL Server Q&A from the SQLServerCentral community

Get answers