A Fine Slice Of SQL Server
Steven Sanderson goes for a walk on the stock exchange:
In the world of time series analysis, Random Walks, Brownian Motion, and Geometric Brownian Motion are fundamental concepts used in various fields, including finance, physics, and biology. Today, we’ll explore these concepts using functions from the
healthyR.tspackage.
Click through to learn about each of these concepts and some examples of how you can generate time series datasets following each of them.
Comments closedChris LaGreca spits out some dates:
I often work with time series data and find it useful to have a variety of ways to randomly generate dates. This particular example is great for evenly distributed date partitions. Running the script below with
the default argumentswill output a list of random dates, one for each month of the year.
It looks like this is generating based off of a uniform distribution, which probably makes the most sense for “give me a day of the month” data generation.
Comments closedJared Westover needs to delete some rows:
In this article, we’ll examine the importance of indexes in improving DELETE statements. Also, many developers assume that adding a foreign key creates an index, which means they’re typically missing. How can you identify which foreign keys are missing indexes? Don’t worry. A handy DMV helps find them. Starting today, you’ll have the skills to make your DELETE statements faster.
Click through for the full post.
Comments closedChad Callihan gets rid of dupes:
In a recent comment on a my post about combining CSV files using PowerShell, a reader named Oliver asked how duplicate values should be handled when combining multiple CSV records. I added a suggestion to that post but figured, “Why not elaborate more on a post of its own?”
Why not, indeed? Click through for the solution.
Comments closedJeff Iannucci gives us the details:
SQL Server database ownership may seem like an insignificant concern, but choosing the wrong owner for your database can be a main contributor to security disasters like ransomware. Let’s talk a bit about how to choose an owner that doesn’t create a huge security vulnerability for you and your SQL Server instance.
(Note: this isn’t the same as being in the db_owner role, although we will look at that later in this post.)
Click through for more information. This is one of the big reasons to avoid cross-database ownership chaining or setting TRUSTWORTHY on any database. Jeff has another way of resolving this particular problem that works, but the best solution is not to use either of those features.
Comments closedSagheer Ahmed sets up TLS encryption:
This technical guide provides detailed instructions on how to configure SSL/TLS encryption for SQL Server using a self-signed or CA-issued certificate. Secure your data transmissions and enhance your security posture with these essential steps.
Read on for the instructions.
Comments closed