Although linear regressions can get complicated, most jobs involving the plotting of a trendline are easy. Simple Linear Regression is handy for the SQL Programmer in making a prediction of a linear trend and giving a figure for the level probability for the prediction, and what is more, they are easy to do with the aggregation that is built into SQL.
2017-06-22
5,131 reads
Statistical calculations in SQL are often perfectly easy to do. SQL was designed to be a natural fit for calculating correlation, regression and variance on large quantities of data. It just isn't always immediately obvious how. In the second of a series of articles, Phil factor shows how calculating a non-parametric correlation via Kendall's Tau or Spearman's Rho can be stress-free.
2017-06-20
3,513 reads
Some people will assure you that you can't do any serious statistical calculations in SQL. In the first of a series of articles, Phil factor aims to prove them wrong by explaining how easy it is to calculate Pearson's Product Moment Correlation.
2017-06-09
4,713 reads
"I’ve noticed that many indexes in my data warehouse aren’t used frequently. Is there a way to use the automatically generated statistics to make useful indexes?"
Kendra Little answers the question in episode 18 of Dear SQL DBA.
2016-11-15
4,733 reads
By Brian Kelley
In Parts 1-3, I covered how I prepare for a certification exam. In this...
By Steve Jones
I was chatting with the product managers at Flyway and one asked me whether...
By Brian Kelley
Even preparing for a class or seminar with set materials takes a lot of...
hi for the 2 years i've been here I believe we've had "encryption" turned...
Hi I have an overnight process that moves allot of claims records Been working...
Comments posted to this topic are about the item Unlocking Data Transformation: My journey...
In SQL Server 2025, what does this return?
DECLARE @player varchar(20) = 'Bo Nix', @num VARCHAR = '10' SELECT @player || @numSee possible answers