Louis Davidson 16 June 2019

A Father’s Influence

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Blogs

My dad and I had a very interesting and complex relationship. Some of this was due to his complex upbringing. His father was an alcoholic who died fairly early in his life, and his mom, well, his mom liked me a lot, but she was a messed up woman in many ways. After his father … Read more

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Louis Davidson 12 June 2019

Building a Great Technical Team

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Editorials

The process of putting together a team of technical people once was largely centered around getting a group of similarly minded people. How people worked was valued more than how well they could accomplish their job. Finding people who could work together smoothly was a big focus when picking new team members, and was a … Read more

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Louis Davidson 05 June 2019

SQL Saturday Virginia Beach this weekend!

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Uncategorized

Coming up this weekend, I will be in Virginia Beach, VA for their first ever SQL Saturday event. I have strong ties to the area, as the company I work for is located there, and they are helping me out to be able to come in for the event at a more reasonable pace than … Read more

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Uncategorized

Louis Davidson 01 June 2019

NOT NULL Persisted Computed Columns (And What They Allow)

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Blogs

Ok, so I have been, and will mostly stay, in a bit of blog hibernation. I am super busy trying to finish up a rather large number of tasks (a few chapters in a book, 2 more SQL Saturdays, and as much theme park time as I can get in before the end of June, … Read more

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Louis Davidson 30 April 2019

Speaking at SQL Saturday Jacksonville on May the Fourth

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SQL Saturday Jacksonville this weekend! Coming up this weekend, on the least holiest, but still very awesome holiday (May the Fourth), I will be in Jacksonville, Florida delivering a couple of sessions. Now, you might say: “Louis, why would you be travelling on May 4?” Check out the logo for Jacksonville’s event: That’s right, since … Read more

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Louis Davidson 05 April 2019

Finding a character in every character string by elimination

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A few weeks ago, a coworker had a scenario where he was trying to import a large amount of data into some format (I think it was JSON, but I think it was a special limitation… that isn’t really important to the solution), and it didn’t allow certain characters. Narrowing down what the bad character … Read more

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Louis Davidson 08 March 2019

Discovering Three or Four Part Names in SQL Server Database Code

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I am in the middle of a project to enable our corporate databases to work with continuous integration using RedGate SQL Automation (and hopefully get a few blogs/articles out of it too.) One of the things that the tool does is create your database in multiple ways, with multiple names, in order to compare to … Read more

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Louis Davidson 27 February 2019

Running a .PS1 or .CMD file from Visual Studio Project Explorer

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Today’s blog is one of those topics that I just needed to get written down somewhere, and I expect that a few readers may find this interesting and want to do the same thing. In many of the Visual Studio projects we have where I work, there are Powershell and/or batch CMD files that we … Read more

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Louis Davidson 17 February 2019

How To, and Not To, Escape a String In TSQL

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Blogs

You are never too old to learn an important lesson. Like most programmers, I read programming language documentation for one of two reasons. 1. You have just found out about something new 2. You find out that you were wrong about something you thought you had read the first time, probably 10 years ago. Today’s … Read more

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Louis Davidson 14 February 2019

We’re Putting the SQL Band Back Together In Chattanooga

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Wow, it has been a while since I last posted, with the holidays, and way too many other projects that I haven’t blogged about just yet because I haven’t found the time. Last June, the SQL Saturday in Chattanooga and SQL Server User Group lost their venue, as well as the leader of the group. … Read more

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Louis Davidson 03 January 2019

The New Year Has Started, So It Must Be SQL Saturday Nashville Time!

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Blogs

Happy New Year everyone! Hope the holiday season’s passing finds you well rested, well fed, and ready to hit the ground running. As year’s go, it was a relatively great year last year… as far as the SQL community goes in any case. But now that 2019 has started, it is time to get back … Read more

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Louis Davidson 11 December 2018

Technique and Simple Utility to Determine the Datatype of a Scalar T-SQL Expression

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Blogs

Note: post revised to take into consideration tips from comments The other day, I was working with a query where someone had put together an expression that had something along the lines of: And I thought to myself… “Self, what will the datatype of this be? Will it fit what the programmer wanted it to … Read more

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Louis Davidson 06 December 2018

I Have an Exclusive Lock, My Row Is Safe, Right?

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Blogs

Note: This is an update of a blog I posted in 2006 with a lot of additional information (I was less wordy in my 30s apparently). It is just as relevant today. I have a presentation I do occasionally on concurrency entitled “Let Me Finish” that covers many of the different types of concurrency behaviors … Read more

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Louis Davidson 26 November 2018

PASS Summit Wrap-up and 2019 PASS Resolutions

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Blogs

Most years, by the time the PASS Summit has finished, I have at least written the basics of my wrap-up blog to the conference, usually when I am sitting at SEATAC eating my breakfast pizza from the little Italian restaurant. It may take me a few days or a week to post it, but that … Read more

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Louis Davidson 03 November 2018

PASS Summit Resolutions 2017 Followup

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The summit is my favorite time of year, but this is literally my least favorite post of every year (and yes, I do consider NOT posting it every year, this year more than most!) It is that time when I take my previous year’s resolutions (centered squarely on the most important 12-ish month period, from … Read more

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Louis Davidson 09 October 2018

Calculating a Security Principal’s Complete Effective Rights

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In my blog Calculating a Security Principal’s Effective Rights. I built a view, named Utilty.EffectiveSecurity that you could query to fetch a security principal’s rights to objects in a database. In that blog I tested the code and showed how it works. Now I have taken this to the extreme and expanded the view to … Read more

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Louis Davidson 01 October 2018

Speaking at SQL Saturday Memphis on October 6

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There are several SQL Saturday events I have attended every event that has existed. Louisville, Nashville, Chattanooga (didn’t speak one of the years), and (I am pretty sure) Birmingham. On October 6, I will add one more to this list. The inaugural SQL Saturday Memphis! Having lived in Nashville for 20 or so years before … Read more

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Louis Davidson 26 September 2018

Calculating a Security Principal’s Effective Rights

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Security. Oh that most painful of topics. I discussed it a few months earlier when I discussed the need to give rights only through roles to users, so everything is the same in dev and prod except the users who are placed in each role (SQL Server Database Security And Source Control). As I was … Read more

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Louis Davidson 05 September 2018

Using WITH in an IF Condition

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I am in the middle of working on my DB Design conference that occurs in a bit over a week from now. But I had this come up in some work I was doing and wanted to put it down in a blog. One of the most exciting features of SQL Server 2005 was the … Read more

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Louis Davidson 15 August 2018

Teaching a Database Design and Implementation Class in Orlando 9-13

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Blogs

Thanks to Andy Warren (@sqlandy), on Thursday, September 13, I will be in Orlando, FL teaching an all-day seminar on the process of designing and implementing a relational database, entitled “Constructing a SQL Server Database.” Throughout the following 7 modules, we will make some requirements, model the database, create tables, with foreign keys, check constraints, … Read more

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Compliant Database DevOps

By need

By role

Louis Davidson