A Fine Slice Of SQL Server
John Mount answers a common question:
We will phrase the problem in terms of a measurement of error. For example, let’s try to achieve a given square error in a regression problem. That is, how hard it it to estimate a number given a sample from a larger population?
From there, John covers several scenarios and provides us guidance. The answer isn’t “30 observations.” Usually.
Comments closedRobert Cain has been working on a neat project:
In this post we’ll begin with an overview of what an ISBN is. We’ll then talk about the website that will be the source for our data. It has two different web APIs (Application Programming Interface) that we can use. We’ll discuss one here, then in the next blog post cover the advanced version.
First though, if you haven’t read the introductory post in this series, The ArcaneBooks Project – An Introduction, I’d highly recommend doing so as it lays the foundation for why and how this project to get ISBN data originated.
Robert is building this up over a series of posts, so stay tuned.
Comments closedEduard van Valkenburg does a bit of data validation:
Great Expectations (Great Expectations Home Page • Great Expectations) is a popular Python-based OSS tool to validate data that comes into your data estate. And for me, validating incoming data is best done file by file, as the files arrive! On Azure there is no better platform for that then Azure Functions. I love the serverless nature of Functions and with the triggers available for arriving blobs, as well as HTTP, event grid events, queues and others. There are some great patterns that allow you to build event-driven data architectures. We also now have the Python v2 framework for Azure Functions available, which makes the developer experience even better. So, let’s go through how to get it running.
This looks really interesting and tying it in to Azure Functions is a good idea assuming that the checks don’t run for too long.
Comments closedMatthew McGiffen made the first mistake—admitting fault for anything, ever:
My biggest fear when my book went into production was that any factual errors had slipped through my checks and the various reviews. I had a lot of reviewer support from Apress, but at the end of the day any issues are my responsibility.
So far I’m not aware of any factual errors but one kind reader (Ekrem Önsoy) has shared with me a few typos they have found. I’m going to document them here and will keep this post up to date as I’m made aware of any others:
Mistakes in 300 pages of text will happen, no matter how many times you go through your magnum opus. For example, I hate the fact that I went through every chapter of PolyBase Revealed 8 or 9 times to weed out any little typo. Then, as soon as I got my copies of the print edition in, I flipped open to a random page and immediately spotted a typo.
Comments closedBen DeBow gives us a once-over of things you can do to harden a SQL Server instance:
Microsoft SQL Server is one of the most secure platforms available, but companies need to deploy, configure, and implement it correctly – along with implementing its built-in security features – in order to ensure their systems are fully protected. Here, we’ll explore six of the most important security features and how to implement them to enhance your SQL Server security.
This isn’t a how-to guide so much as it is a what-you-can-do guide.
Comments closedChad Callihan backs that database up:
Keeping on the recent PowerShell trend, let’s use PowerShell to accomplish a primary task of any database administrator: backups. With PowerShell and dbatools, you can do a simple backup or add a range of options to fit your needs.
I’d also like to call out that it’s really easy to set configuration options with dbatools, such as buffer count and max transfer size.
Comments closedBob Pusateri keeps it all straight in his head:
Ooh! A mnemonic! And a pretty good one at that. The idea being that the first letter of each word of the sentence helps you remember something else, like the order of the major parts of a SELECT statement:
SELECT
FROM
WHERE
GROUP BY
HAVING
ORDER BY
Click through for Bob’s best attempts. Oddly enough, now I want some Rally’s fries. Or maybe Checkers—I can’t decide.
Comments closed