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GroupBy – Free SQL Server Training

GroupBy.org is free technical training by the community, for the community. Volunteer speakers submit abstracts at GroupBy.org and you – the attendee – vote to pick the sessions. Want to present your own session or just vote on others? Join us at GroupBy.org.
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Now displaying: 2019
Feb 12, 2019

Ever had a manager standing over your shoulder, wanting to know why an instance is running slow or if it can handle additional workload? What information would you use to answer these questions? If only you knew what performance metrics to collect and had them for your existing instances to answer these questions.

In this session, we will discuss sp_whoisactive and Query Store. Then we will be combining three open source tools – Telegraf, InfluxDB, and Grafana – into an inexpensive system that collects performance metrics you can use to troubleshoot issues and answer important questions about your SQL Server instances, including your Linux SQL Server instances. We will learn what metrics to collect, how to use the tools to collect performance metrics and then we’ll put it all together in an interactive dashboard for easy visualization.

Attendees will see how easy it is to get good performance data and visualize in an interactive way and combine with other tools to troubleshoot issues. For an example, we will combine this solution with Query Store and/or sp_whoisactive to find a problem that occurred on a system and caused me to get my nap interrupted on a Saturday.

Get full session notes here: https://groupby.org/conference-session-abstracts/using-open-source-products-to-collect-performance-metrics/

Feb 5, 2019

Every time you see a Columnstore Index getting involved in the execution plan, do you realize that there are whole execution plans behind those Index Scans ? Did you ever ask yourself, what are those strange and weird HT_* waits stand for ? Why do we wait for seconds/minutes for something like HTBUILD while it seems that nothing happens ? Why do we have a ROWGROUP_VERSION wait on one server, while the other allows queries to run faster ?

This session focuses on answering those question - to help you understand the reasons and the conditions behind every single available wait for the Columnstore Indexes and the Batch Execution Mode.

Jan 29, 2019

The optimizer has options.

Not every option is optimal.

Optimistic query tuners hope that the optimizer will make optimal choices.

Often, the optimizer will stick an optional operator in a plan that just doesn’t belong.

Sorts, Spools, Lookups, Tops, Aggregates, and Bitmaps can all end up where they don’t belong.

Opt out of bad powerpoint decks with this demo-only session!

Joe Obbish and Erik Darling will show you when the optimizer’s optics might require a trip to the optometrist.

Jan 22, 2019

What do you want to be when you grow up? I want to be a DBA, a teacher, a blogger, and a world-traveler. I'm living my dream.

In this session, we'll talk about how I got where I am, and how you can get to where you want to be. In addition to sharing my journey, I'll give some helpful tricks to getting your next job. You'll learn how to write a resume that gets you noticed, and how to avoid writing a resume that lands in the trash. I'll finish by teaching you how to navigate interviews, and how to decide if a potential job and employer is right for you.

Jan 15, 2019

Whether you love or hate buzzwords, the big ones signify critical cultural changes. In this session, Kendra Little will explain what executives mean when they describe a 'digital transformation', why this transformation is happening across all industries, and how understanding this gives developers and database administrators an advantage in building their careers. You will learn what motivates CEOs to modify their business models in a digital transformation, and patterns and anti-patterns of companies that have attempted these transformations – with different results. You'll leave the session with an understanding of the core ideas and philosophies behind digital transformation that will help you prioritize what to learn, guide your interactions at work, and strategize your career path.

Get full session notes here: https://groupby.org/conference-session-abstracts/how-to-monitor-everything/

Jan 8, 2019

A new release of SQL Server is like a new season of your favorite TV show. Some releases in the past were lacking; I always felt like SQL Server 2008 R2 was about as exciting as the Seinfeld finale. But Microsoft hasn't disappointed in recent years, and SQL Server 2019 is no exception.

There are some really exciting features here. Some are big-ticket items, like support for Secure Enclaves, which provide all the benefits of Always Encrypted but without the client round trips. Others are smaller but powerful improvements, like deferred table variable compilation, and better error messages. Some are in between, like enhancements to batch mode, more online operations, and query hints to target specific compatibility levels.

With plenty of demos, I'll show how these features will improve your performance, security, workflow, or all three. And when necessary, I'll point out pitfalls or gotchas that you won't find in the official documentation.

These and many other features are worth talking about, so let's talk about them!

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