Kathi Kellenberger


SQLServerCentral Editorial

PASS Data Community Summit Pre-cons

This year PASS Data Community Summit is a free virtual event, and I encourage you to register even if you are interested in just a handful of sessions. One of the Learning Pathways might be just what you are looking for, from Query Basics to Power BI to DevOps. What I’m most excited about this […]

2021-10-09

62 reads

SQLServerCentral Editorial

All the Tools in Your Toolbox

I recently began writing an article to compare the performance of several window functions to traditional query methods. I began with my favorite function, LAG, but soon found that there were so many other ways to write the query that the article never covered the additional window functions. The article was quite fun to write, […]

2021-09-18

126 reads

SQLServerCentral Editorial

Taking time off

Time is a precious commodity, and so much of our time is dedicated to working. IT professionals often have jobs with good benefits, including generous paid time off. It’s important to get away from work to relax and recharge, but, sometimes, it’s difficult to take those days that belong to us. Even when we do […]

2021-07-17

93 reads

SQLServerCentral Editorial

Looking Forward to SQL Server vNext

Releases of on-premises SQL Server arrived quite rapidly for a few years with seven releases during the years spanning 2008 and 2019. While it has technically been less than two years since SQL Server 2019 reached general availability in November 2019, it feels like ages since we have heard any news about what’s coming next. […]

2021-04-24

1,236 reads

SQLServerCentral Editorial

New Options for Training and Learning

In 2008, I managed to achieve the goal of becoming a Microsoft Certified Trainer. Once I achieved the status, Microsoft shipped me a binder with dozens of DVDs containing lab VMs and class materials for all the current classes. At some point, instead of receiving DVDs, you were expected to download images which was quite […]

5 (1)

2021-03-13

138 reads

SQLServerCentral Editorial

Common Table Expression Misunderstandings

I frequently use Common Table Expressions (CTEs) when I demo windowing functions and get questions about them. Windowing functions are limited to the SELECT and ORDER BY clause which means that you can’t filter or group on them directly. Using a CTE is one way to separate the logic of the query into multiple steps […]

5 (2)

2021-02-27

357 reads

SQLServerCentral Editorial

Let it go

I’ve been digging through the 18 years’ worth of articles, editorials, blogs, contests, interviews, promotions, and announcements over at Simple Talk. There are over 5000 posts, and many are quite outdated, especially those announcing beta versions of software or other time-sensitive content. Some articles haven’t seen the light of day for 10 years, yet some […]

2021-02-06

110 reads

SQLServerCentral Editorial

Who is my customer?

My final job in my previous career was at a hospital. I worked there for five years in the 90s before getting my first position as a developer. While I didn’t love the career I was leaving, I did appreciate what I learned from that last job. Part of the onboarding included a short class […]

5 (1)

2021-01-16

110 reads

SQLServerCentral Editorial

Goodbye to PASS

On December 17, the PASS organization announced the news that it would cease operations on January 15, 2021. Since the announcement, folks have been scrambling to figure out how to keep their user groups and events going or downloading recordings. By the way, if you need assistance with your user group, please reach out to […]

2020-12-26

181 reads

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