This week’s Quizletter featured a quiz on using the AVG() function in SQL Server.
I was inspired to write this quiz because I’ve been teaching “TSQL School” each week. When we covered aggregate functions, I remembered how tricksy AVG() can be.
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I’m proud, giddy, and just plain overly excited to be giving a pre conference session at the SQL PASS Summit in Seattle, Washington on November 5, 2018.
This is going to be a fun, demo-packed day which will teach you skills you can use throughout your career as a developer, database administrator, or data professional.
I am excited and honored to be giving two free online sessions next week. Both events are sponsored by the fine folks over at Quest Software. Why is That Data Wrong? How Choosing the Wrong Isolation Level Causes Bad Results Tuesday, June 12, Noon Pacific 24 Hours of PASS, Sponsored by Quest Software If you haven’t thought much about isolation levels in SQL Server, chances are your applications can return inconsistent data to your users: data that looks completely wrong.
A question came up in my webcast today on the topic of Snapshot and Read Committed Snapshot Isolation - what impact will enabling these have on my SQL Server instance?
This question came up in a webcast recently: if a filtered index is causing data modifications to fail, does disabling the filtered index fix the problem?
DBA vs Deadlock: How to Out-Index a Deadly Blocking Scenario June 14, 2018 8:30 AM – 9:30 AM PST <- This is past, but no worries, it was recorded Deadlocks strike fear into the hearts of even seasoned DBAs — but they don’t have to! In this session, you’ll get the code to cause a sample deadlock in SQL Server. You’ll see how to interpret the deadlock graph to find out where the conflict lies, and how to design an index to make the deadlock disappear.
I got a question recently about why a particular bit of code was failing when running.
My first thought: oh, that’s probably related to… whatsitcalled.
This week I discuss a question that I’ve gotten in many forms over the years - a lot of the scenarios are so specific that it’s hard to keep them anonymous, but they can be generalized as a bigger problem: how do I deal with being responsible for things that I can’t fully control?
I saw a question on Twitter today that took me down a little rabbit hole. And when I go down rabbit holes, I like to blog about it! There’s a TLDR at the bottom of this post if you’re short on time.
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