Recently I created my first Azure SQL Database. But now I need to connect to it.
There is a highly useful system view called sys.master_files. If you’ve never encountered it before it returns a list of all files from all databases. It’s been somewhat frustrating to me that there is no similar master_objects, master_tables, master_indexes etc. So what does a dev/dba do? Create them! So… Read more
Starting with Randolph’s definition of a best practice (he got it from Wikipedia and it’s more than good enough)
A best practice is a method or…
Let’s start with a very brief definition of some RAID levels.
- RAID 0 : Stripe your data across multiple disks. Writing a portion of the data to each disk. This improves performance but increases the risk of corruption.
- RAID 1 : Mirror your data across multiple disks. This duplicates…
I’ve been working on tuning a query for the last week and I’ve had to make several changes to the query’s logic. I’m always a little nervous when making those types of changes so I try to do some careful testing before I even suggest the changes to the developers.… Read more
One of the things I like best about joining in on Adam Machanic’s (b/t) TSQL Tuesday blog party is that it can force you to explore things you haven’t tried before. Well that’s exactly what Wendy Pastrick (b/t) wanted us to do.… Read more
It always amazes me how often these three commands get confused. Heck it amazes me how long I confused them.
TL;DR; GRANT and DENY are opposites. GRANT applies a positive permission, DENY a negative permission. DENY will always override GRANT. REVOKE is the opposite of GRANT and DENY. It removes… Read more
You have a database with one or more filegroups, and one or more of those filegroups has multiple files. You’ve decided that you don’t actually need some of those additional files and want to get rid of them. Here are some steps you can follow.
Assume there are 5 files… Read more
Oh Noes! I have a job that requires me to run an SSIS package, cmdshell script, etc. And I need them to have specific file level permissions! What do I do! I know I need to run my job/job step as a specific AD/Windows user but I don’t see how… Read more
I’m a big fan of certifications as a training exercise. However not everyone has the same interests. With the new MCSA (well new 6-8 years ago) we were required to take the data exam (70-461), the admin exam (70-462) AND the BI exam (70-463). I know a number… Read more
Me: I think I’m going create a new playground instance.
Myself: Make sure you use a case sensitive (CS) collation when you install it!
I: You mean a collation that forces us to pay attention to the case of the variable names (for example)? So that something like this returns… Read more
Everyone makes mistakes right? And sometimes you create an object and decide later that you messed up and need to rename it.
EXEC sp_rename 'OldName','NewName'
I love this somewhat obscure mathematical operator. All it does is return the remainder of a division statement but even though it’s pretty basic most people I talk to have never heard of it. The format is
dividend % divisor = remainder
DECLARE @remainder INT DECLARE @dividend INT = 10…
It’s T-SQL Tuesday again and this month we are hosted by Jens Vestergaard (b/t) who want’s us to talk about our favorite SQL Server feature. Great topic, but a really difficult choice. There are so many great features of SQL Server.
Some of my favorites include: Read more
This is one of those frequently ignored best practices.
When you create an object, specify the schema where it will be created.
I should also point out
When you reference an object (in a query for example), specify it’s schema.
I know I have a tendency to forget this myself.… Read more
Typically it’s considered best to run your queries without an ORDER BY and let the application do any sorting needed. Sometimes though it’s faster and easier to let SQL handle the sorting for you. And that’s fine. SQL is very good at sorting.
Simple sorts are pretty easy. In the… Read more
I’ve playing around with AdventureWorks and managed to found some hidden code! Truly odd stuff. I’m so shocked I couldn’t wait until the time I usually post.
So if you take the x character of the first character column of each table (where x is object_id % len(column) ), merge… Read more
To test or not to test. That is the question. Or is it? Shouldn’t we always test? That was the question posted here. It’s a big question so let’s break it down a bit.
You have a system and are about to upgrade some or all of it.… Read more
I answered an interesting question on SE today (ever notice how many posts come from stuff I read on forums?) and I was pleased with how the answer turned out. In particular one piece (expanded a bit) seemed like it would make a good blog post.
Tomorrow (3/24/2016) at noon CT I’ll be presenting my SQL Server Security Basics session for the Pass Security Virtual Chapter. If you are interested in SQL Server database security and have little to no experience with it then this is the session for you! Heck even if you do… Read more