Kathi Kellenberger

Mentoring

Over the years when I changed careers and then advanced in IT, many people helped me learn or provided opportunities. Some of these people gave specific in-person help, like my brothers who taught me programming logic and database normalization before I ever thought about working in technology. Others assisted from a distance when I read […]

2020-09-05

70 reads

How to be an MVP

For those of you who haven’t heard of it, MVP stands for Most Valuable Professional. Microsoft gives this award to people in the community – not employees – who help teach the community at large about their products. The award can be given in one or more of the categories such as Data Platform, AI, […]

5 (1)

2020-08-08

119 reads

Controlling Intelligent Query Processing Features

I always look forward to new T-SQL features and optimizer enhancements with every new version of SQL Server. Starting in 2017, Microsoft came up with a set of features called Intelligent Query Processing (IQP). These features work to improve performance without changing any code. If you’d like to learn more about these features, take a […]

5 (2)

2020-07-11

115 reads

What is Azure SQL Database Serverless?

I remember when the first SQL databases were available on Azure. The size limits and missing features made them impractical for most uses at the time. Fast forward 10 years and you can you create a terabyte database and take advantage of configurations like Hyperscale, Elastic Pool, and Managed Instances. You get automatic high-availability and […]

2020-06-13

132 reads

Bad Managers

I’m constantly hearing stories about terrible managers, and, of course, I’ve experienced quite a few myself. In fact, I can’t come up with many nice things to say about most managers when I look back over my career. (Luckily, my manager at Redgate is wonderful!) Early in my tech career, I was working at a […]

5 (1)

2020-05-16

165 reads

The SQL Community Steps up in Time of Need

Healthcare workers are some of the many heroes working bravely in the face of the Covid-19 pandemic. To protect themselves and their patients, they must wear face masks during their entire shifts. This causes a great deal of ear irritation, so a strap was designed to make wearing the masks easier and alleviate pressure on […]

2020-04-18

118 reads

Azure Data Studio and Deployment Notebooks

Azure Data Studio (ADS) is a cross-platform tool that you can use to run T-SQL queries much as you have done using SQL Server Management Studio. No, the databases do not need to be hosted in Azure; the tool works fine for on-premises SQL Servers as well. I’ve started using ADS more as I teach […]

2020-03-21

115 reads

Moving on from Volunteer Projects

I can’t remember a time when I was not involved in side-projects, usually as a volunteer but also writing books or creating courses. New projects are like bright, shiny objects, and it’s easy to get involved in too many of them.

2020-03-16

Blogs

Daily Coping 18 Sep 2020

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

Optimize for Unknown for Inline Table-Valued Functions

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I had a curious performance issue today. An inline table-valued function (iTVF) was performing...

Daily Coping 17 Sep 2020

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

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Hi I'm new-ish to MLS and have been trying to add new python packages...

Find row closest to date

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Just having trouble getting this to work as I hoped. Trying to extract entire...

SQL Query - FULL JOIN multiple tables but return NULL results

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Good day! Need help with my sql query code; first FULL JOIN "ILEtransfer" no...

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