Andy Warren

I started my SQL journey here at SQLServerCentral as one of the founders, helping to build a place to share and learn that continues to thrive under the editorial guidance of my friend Steve Jones. I've done a lot of volunteer work over the years ranging from our local SQL group (oPASS, SQLOrlando) to serving on the Board of Directors of PASS to designing and building the framework of SQLSaturday (which has gone on to produce more than 1000 locally managed events since we started in 2007). These days I manage a DBA team, but over the years I've been a trainer, consultant, contractor, and DBA. I'm rarely present on social media, the best way to contact me is here, LinkedIn, or via email.

SQLServerCentral Article

Is all code really code? One question from an interview

Andy discusses one of the questions he uses to screen senior developer candidates. While the question itself is interesting, we think it will be more interesting to see how many of you agree with one of his positions - that developers think of program code and sql code as different animals, especially when it comes to debugging.

★ ★ ★ ★ ★ ★ ★ ★ ★ ★

You rated this post out of 5. Change rating

2004-07-09

11,934 reads

SQLServerCentral Article

Mini Disaster - AC Failure

Are you prepared to handle a full or partial failure of your AC system? Ever thought about what would happen if it did happen. Once again Andy offers comments on a real world incident. While we'd all like to think it will never happen to us, we think sharing these incidents is a great way to prevent it from happening to others.

★ ★ ★ ★ ★ ★ ★ ★ ★ ★

You rated this post out of 5. Change rating

2004-06-07

6,189 reads

SQLServerCentral Article

Case Sensitivity in Selects - Part 1

Your SQL Server has a case insensitive collation, but you need a case sensitive join? Do you know what happens? There are a couple options but do you know the performance implications of using each? Or a way to mitigate the performance degradation that can result?

★ ★ ★ ★ ★ ★ ★ ★ ★ ★

(1)

You rated this post out of 5. Change rating

2004-06-03

10,140 reads

SQLServerCentral Article

Replication Gotcha - Columns with Defaults

Some days the simplest things go wrong. On this particular day Andy tried to remove a column that was part of an article in a transactional publication, wound up in an inconsistent state that required a snapshot to fix. Deeper investigation reveals the cause and a work around.

★ ★ ★ ★ ★ ★ ★ ★ ★ ★

You rated this post out of 5. Change rating

2004-05-25

7,570 reads

Blogs

Lift and shift vs modernizing your data warehouse

By

If you are migrating a data warehouse, there is a question worth asking before...

Power BI Fun With Travels

By

I’m back from a great vacation. I had the chance to visit two new...

DiskANN Experiment — Exploring Entry Points and Graph Neighborhoods

By

Introduction I was experimenting with vector search in SQL Server 2025 using approximately 3.8...

Read the latest Blogs

Forums

DML Trigger Types

By Steve Jones - SSC Editor

Comments posted to this topic are about the item DML Trigger Types

PostgreSQL in action with Opensearch

By sabyda

Comments posted to this topic are about the item PostgreSQL in action with Opensearch

Choose the Second One

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Choose the Second One

Visit the forum

Question of the Day

DML Trigger Types

How many types of DML triggers are there?

See possible answers