I frequently need to see rowcounts and execution time for queries while they’re running. Maybe I’m troubleshooting a slow query that’s still executing, or I want to understand which operators are causing the slowdown before the query completes.
Last week at the PASS Summit I learned some little nuances about how this works that I’d missed.
While every managed database service has high points and low points, there are three things that make RDS for SQL Server shine in comparison to Azure SQL Managed Instance: options for a higher memory:vCPU ratio, a well documented API that works beautifully with python, and fast and effective customer support that isn’t painful to use.
It’s just three things, but they make a huge difference. And these are three things that Microsoft can, and SHOULD, really fix for their cloud database services.
tldr; I’ve published a script to loop through all databases on an instance, identify if there are any query plans in a problematic ‘failed" forced state (which can hurt query performance), and un-force them if found. Get the dbo.dba_QueryStoreUnforceFailed stored procedure on GitHub.
This script is designed to work on SQL Server on-prem, in a VM, or in Azure SQL Managed Instance or SQL Server RDS. Since the script is instance-level and loops through all databases, this isn’t really designed for Azure SQL Database – and you don’t get a SQL Agent there anyway, so you probably want to change this around for that use case. The script is shared under the MIT license, feel free to contribute code and/or adapt away for your own uses.
I’m teaming up with Erik Darling to teach you SQL Server Performance Tuning in two days at the PASS Data Community Summit in Seattle.
Erik and I are co-teaching both days of training to give you a strong strategic background on the internals you need to know, along with critical tactical performance tuning techniques. Join us to level up your perf tuning skills!
I’m thrilled to be heading to Seattle in November for the PASS Data Community Summit. My favorite things about the PASS Summit are making connections, learning from folks, broading my horizons, helping build a vibrant community, and teaching.
Teaching is a great privilege, and I’m excited to be giving both a pre-conference session and a regular session. I chat about the sessions in this ~4 minute video.
PASS Summit 2019 starts up next Monday with pre-conference sessions. I’ve got my schedule all set, and I’m going to be busy: I’m speaking in two full-day pre-conference sessions, giving two regular sessions, judging the ever-exciting Speaker Idol competition, and also spending time at the Redgate booth in the expo hall. I scored a little PASS-TV interview to talk about Redgate right before the keynote on the first day.
It’s just ten days until PASS Summit 2019 begins in Seattle. The schedule is up and there are loads of good sessions. Here’s what I’m putting on my calendar to make sure that I don’t miss it: along with some sessions I wish I could attend that I’ll be sure to catch the videos of afterwards.
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