No, that’s not a threat. It’s an offer to help out.
Redgate Software is very serious about the efforts we’re putting into creating the tools needed to support your Database Lifecycle Management (DLM) processes. DLM is a vital part of supporting both Agile development methods and moving towards an automated… Read more
I’m almost done reading the book Connected (will be by the time this is published). It’s fascinating although, at least so far, little in the way of suggestions for how to take advantage of this information. That however doesn’t change my plans around working on positive thoughts and emotions as… Read more
I tend to write my queries using LEFT JOIN. Why? Because logically I see it in my head like this:
Give me all the rows from this table and only those rows that match from the other table.
But, wouldn’t this logic work just as well:
Give me only the…
I live for questions. And my favorite questions are the ones where I’m not completely sure of the answer. Those are the questions that make me stop presenting in order to take a note so I can try to answer the question later, usually in a blog post. Guess where… Read more
I finally got out to some community events last month and got to see a bunch of great speakers. Not that you don’t see great speakers at paid events, you do. It’s just that they’re usually professional speakers and I want to encourage others when I can.
The Speaker of… Read more
Let me start with an important note: I am voicing my opinion here as an individual, not an… Read more
It’s been a pretty interesting month on the board.
First, we did have a little problem. I’m sure one or two of you may have noticed that the SQL Saturday web site was down for a moment. Well, three days. Joking aside, this was a serious problem, but my… Read more
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