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
Buckle up, database wranglers! Nowadays, SQL DBAs hold the keys to a company's most...
By DataOnWheels
Picture this, your data ingestion team has created a table that has the sales...
By Brian Kelley
I did a post last month titled RTO and RPO are myths unless you've...
First off, my apologies for what could potentially be a bad title! I am...
I've inherited a couple of rather large databases from my ex-colleague when I join...
Comments posted to this topic are about the item Identifying Customer Buying Pattern in...
I have marked a few transactions in my code. How can I find out which marks were stored in a transaction log?
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