The question came up on SQL Server Central that someone wanted to track queries on their 2008R2 instance and on their 2014 instance in order to validate performance after an upgrade. The plan was to use query hash values. I was curious, so I set up a quick test. First,… Read more
I spend many of my evenings researching and writing. Sometimes it’s writing new books. Sometimes it’s fixing and rewriting old books. Occasionally it’s a blog post like this one. Lately, it’s been a series of articles for SQL Magazine that are all about the new functionality available in Azure SQL… Read more
The new portal for managing Azure is pretty. I’m not sure I’m in love with it, but it’s pretty.
However, one thing that I have to access regularly is the firewall settings for my Azure SQL Database. I do demos from all over the place. I never know what my… Read more
I decided in January that I would write regularly about people that I’m grateful for. Now it’s April. Oops.
The concepts are simple and science based. Positive emotions help your clarity of thought. Further, your moods and actions extend out through your network to the third layer. With that in… Read more
If you’re starting the process of moving your databases in Azure SQL Databast to v12, you need to do one thing. Make sure you have SQL Server 2014 CU5 or better installed on your machine with Management Studio (current list of updates). Otherwise, like me, you’ll be looking… Read more
I’ve posted previously about how a foreign key constraint can change how a SELECT query behaves. Logically that just makes sense. But other types of constraints don’t affect execution plans do they?
Let’s take this constraint as an example:
ALTER TABLE Sales.SalesOrderDetail WITH CHECK ADD CONSTRAINT CK_SalesOrderDetail_UnitPrice CHECK…
One of my favorite events of the year is the SQL Saturday in Silicon Valley. They’ve had four of them and I’ve gone to three (had to miss last year, scheduling conflict). It’s a fantastic event and Mark Ginnebaugh (b|t) does a great job putting… Read more
It’s been a while since my last update. Sorry. I’ve just been traveling and presenting and working on books and this slipped through the cracks a bit. I’ll try to do better in the future.
Nothing major to report. As a board member I’ve been working primarily on… Read more
Although, that answer can be slightly, ever so slightly, nuanced…
Parameter sniffing is a good thing. But, like a good wine, parameter sniffing can go bad. It always comes down to your statistics. A very accurate set of statistics with very little data skew (some values that… Read more
Last year I purchased a Lenovo W530. Nightmares then ensued. Nice laptop if you just want to use it as a laptop, and only a laptop. Horror show if you need to present from it. So, I replaced it with an HP… which also gave me some troubles (try presenting… Read more
Simple paramaterization occurs when the optimizer determines that a query would benefit from a reusable plan, so it takes the hard coded values and converts them to a parameter. Great stuff. But…
Let’s take this example. Here’s a very simple query:
SELECT ct.* FROM Person.ContactType AS ct WHERE ct.ContactTypeID =…
The PASS SQL Saturday events are meant to be a place to grow the pool of speakers, provide a mechanism for the speakers to learn, and fulfill the PASS goals of Connect, Share and Learn. So, you’ve decided you want to start speaking at a SQL Saturday event. Cool. You… Read more
It’s not a question of scheduling. I just haven’t been to lots of community events in the last several months so that I can see community speakers and find one to give an award to. I’ve been trying. So, we’re giving out two awards this month (my blog, my award,… Read more
The question came up at SQL Rally, “Can you use Extended Events to monitor for query timeouts?”
My immediate response was yes… and then I stood there trying to think of exactly how I’d do it. Nothing came quickly to mind. So, I promised to track down the answer… Read more
I get around quite a bit.
Next week I’ll be visiting three cities in Germany talking to user groups in Frankfurt, Cologne and Munich on the 17th, 18th, and 19th of March, respectively. Here’s the one link I can find for information. EDIT: Here’s Cologne and here’s Munich.
Next,… Read more
Sjor Takes (b|t) has just barely started blogging, but he’s got a great post about a discussion he had with a colleague. It’s worth a read. When you get done, I’ll provide my answer to the question posed at the start and conclusion of his post.
I had… Read more
You recognize that you need to provide a pipeline for database deployments, that you need to automate as much support for your development teams as you possibly can, that you have to have testing in place to ensure protection of the production environment, that you need to speed your processes.… Read more
Check out this DevOps Reactions animated GIF and caption.
It’s funny on multiple levels, but it also makes me both mad and disappointed.
I get mad because it’s 2015. Surely by now most of us, especially those who have worked in the enterprise with development teams, know that the old… Read more
Never forget, we’re making buggy whips. And everybody we know drives little buggies and they need our buggy whips. We’ve got a special talent, a unique knowledge set, and it’s fulfilling a defined need. So we’re all set, right?
Well, other than that Stanley Steamer over there. And maybe that… Read more
Parents, you know that feeling you get after you’ve brought home that brand new baby (or in my case, babies) where you suddenly say to yourself, “Oh damn. What have I done?” Yeah, that’s my feeling after my first board meeting. But let me give you a run-through of how… Read more