Kevin3NF

Kevin Hill is a career SQL Server DBA living in Dallas, TX. His specialities include HA/DR, Best Practice configuration, Performance tuning and teaching new and accidental DBAs
  • Interests: Cycling, family, sci-fi, DBA stuff

Blog Post

Top 10 Careers in Data

Would you re-order these? Machine Learning Engineer $$$$$ Develop and deploy AI models Optimize machine learning algorithms for efficiency Work with big data frameworks to process large datasets Data...

2025-02-28 (first published: )

339 reads

Blog Post

3rd Party Applications Have Issues

As a SQL DBA, what do you do when a vendor application has performance problems that are code related? Server settings don’t generally seem to be an issue. Queries...

2024-05-20 (first published: )

212 reads

Blog Post

Degrees and Trade Schools

Can we normalize a couple of things? 1 – Trade Schools. Back in the 80’s trade classes in high school and post high school were frowned upon, or looked...

2024-05-08

43 reads

Blog Post

Set-Based vs Row-Based Database Code

In SQL Server, the terms “set-based” and “row-based” refer to different approaches or styles of writing SQL code to manipulate data. These styles have implications for performance, readability, and...

2023-12-18 (first published: )

615 reads

Blog Post

Database Concerns – A Poll!

What are you most concerned about in your database platforms? Please pick from the list below, and expand on your choice in the comments if you like:   Thanks...

2023-11-08 (first published: )

233 reads

Blog Post

IRL #8: SQL Server Down

Problem: My PocketDBA® client called in with a non-responsive SQL Server. Application errors, timeout, alerts firing. SQL Server box is up, and the services are running. Background: This is...

2023-09-06

50 reads

Blog Post

SQL Server is not a Car

Lets compare them anyway, just for fun. Both have an engine Both have a monitoring device (Dashboard/Activity Monitor) Both need power (Gas/Electricity) Both need to be told what do...

2023-09-05

54 reads

Blogs

Automated SQL Server Benchmarking with HammerDB and Docker: A Complete Testing Framework

By

I’m excited to announce the release of a new open-source project that fully automates...

T-SQL Snapshot Backups on Availability Group Secondary Replicas

By

One of my favourite features of SQL Server 2022 was the T-SQL Snapshot Backups....

The Book of Redgate: Hours

By

I have said and written this many times: Redgate Software is the type of...

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Forums

ORDER BY alias

By aniap

Comments posted to this topic are about the item ORDER BY alias

Optional Parameter Plan Optimization in SQL Server 2025: Fixing the Kitchen-Sink Search Procedure

By vgupta

Comments posted to this topic are about the item Optional Parameter Plan Optimization in...

AI Experience Gap that we keep talking about

By Pat Wright

Comments posted to this topic are about the item AI Experience Gap that we...

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Question of the Day

ORDER BY alias

There is a table tmp_tab:

CREATE TABLE tmp_tab (
id int,
val int
);
INSERT INTO tmp_tab VALUES
(1, 1),
(2, NULL),
(3, 3),
(4, 4),
(5, 5);
You want to order the rows ids by the following expression:
    ISNULL(val, id) + 1
Which of the following queries produces the expected ordering and why? (Select all correct)

See possible answers