A couple of years I ago I was going to write a song about automation, in reggae style, which could maybe have been used by the Trinidad SQL community – particularly Nigel Sammy (@nigelsammy). The theme was going to be around the fact that you need automation because the sun shines and the beach is calling.
But of course, automation is about so much more than freeing up time for the beach (even here in Adelaide, where every weekday this week is set to be over 40C). Automation helps you be consistent in what you do by removing manual steps, and lets you focus your attention on the things that require thought, rather than being the same as always.
This month’s T-SQL Tuesday is about automation, and I thought I’d write about how a few of my favourite applications help me massively in the quest for better automation. The host-post asks about what has changed since the last time automation was a topic, but that time I mainly looked at Policy Based Management, which is great for being able to make sure that things happen. This time, I want to look particularly at the things I use to develop repeatable commands, thereby reducing how much I have to do compared to how much can be done by the machine.
SQL Server Management Studio (SSMS)
The Script button in dialogs! Oh how I love it. In fact, I wish that there were no OK button on dialog boxes in SSMS. I would be perfectly fine with a “Script and Close” button instead. I know I could have an Extended Events session or Trace running to be able to pick up what has just been run on the SQL box, but that doesn’t quite cut it. When I hit the OK button, I don’t actually know what commands are going to be run. I’ll have a good idea, of course, but if I’ve been tabbing through options and accidentally changed something, I might not have noticed (ok, I’m sure I will have, no one ever makes that mistake in real life). Even more significantly though, I might want to be able to run exactly the same command against another server. The Script button is amazingly useful and should be used by EVERYONE.
While I was at university, I used Unix a lot. My PC at home ran Linux, and I shuddered whenever I’d find out I had to use a Microsoft environment. It’s okay – I got over it – but one thing that remains is my appreciation for the text editor vi. I was pretty much forced to use it for a long while, and for a good year or more, I think I learned a new way of doing things almost every day. Just about every time you’d sit with someone else and work with them, you’d see something they’d do and go “Oh, how did you do that?” Of course, they’d reply with “Oh, that’s just pressing star”, or something like that. It was a good time, and I developed an appreciation for vi (and later, vim, and its Windows client gVim), which has stayed with me. Still I find myself opening Visual Studio and filling a row with ‘j’s as I hope to scroll down through the code.
From an automation perspective, gVim is great. The whole environment is based on keystrokes, so there’s never any reliance on putting the mouse cursor somewhere and clicking. Furthermore, I can hit ‘q’ and then record a macro, playing it back with @ (ok, it’s actually q followed by another letter, in which you store the macro, and @ followed by the letter for the macro of interest). This makes it great not just for writing code, but editing all kinds of text. I like Excel for being able to use formulas which can be repeated across each row, but I also find myself leveraging gVim’s macros for doing things even more easily – and navigating multiple lines.
I so wish that Windows had the macro-recording concept of gVim, or the Script button of SSMS. It would be really nice to be able to go to some spot in the Registry, or some Control Panel dialog, make some change, and say “And please give me a Script for what I’ve just done!” (If someone knows how to do this, PLEASE let me know)
But even so, PowerShell is tremendously useful. In my Linux days I would control everything through a shell environment (I preferred tcsh for some reason – I forget why – bash was good too, of course), and as such I could look back at what I’d just done, store scripts to repeat things another time, and so on. I don’t get that feeling with Windows, but PowerShell helps. I feel comfortable loading up a piece of XML in PowerShell (even an Execution Plan), and I love how easily I can move around XML in PowerShell.
Of course, every month I write a post for T-SQL Tuesday, and it would be quite neat to have a script that would automate that for me. But there are plenty of things that I don’t have automated (and may never do), and putting blog posts together is probably going to remain one of those. I can’t see myself creating a fully-automated Write-BlogPost cmdlet any time soon.