Classic quotes – Community One East

The CommunityOne East 2009 conference has finished up. There were a few classic statements made by the speakers during the day. They included.

“We have a community reception, that’s a long way to say free beer.”

“Google is the dial tone of the Internet, if it’s not there people start freaking out.”

“I am an insom-maniac, a late night hacker.”

“Having a successful catastrophic – Achieving your marketing goals, and your site crashes due to the load.”

“Ruby is a beautiful expressive fun language.”

(talking about cloud providers) — “Lock-in, it’s like marriage, it’s not necessarily a bad thing.”

“It wasn’t a red carpet, but it was carpeted.”

Event: CommunityOne East in New York, NY.
Article Author: Ronald Bradford

Tagged with: CommunityOne East 2009 Conferences Sun

Producing Alternative Means statistics with SQL

Producing Alternative Means statistics with SQL

MySQL’s built-in AVG() computes the arithmetic mean — the sum divided by the count. That is the right default for many questions, but it is not always the right measure of central tendency.

Extending MySQL Capabilities with UDFs, Plugins and Components

Extending MySQL Capabilities with UDFs, Plugins and Components

MySQL offers three different approaches to extending the SQL capabilities with the default product you download and install. These are: User Defined Function (UDF) MySQL Manual MySQL Plugin MySQL Manual MySQL Component MySQL Manual For the purposes of this post I will be using the current LTS version MySQL 8.

Producing One-Sample Z-Test statistics with SQL

Producing One-Sample Z-Test statistics with SQL

The one-sample Z-test determines whether a sample mean differs significantly from a known population mean when the population standard deviation is also known. It is the appropriate test when the population parameters are established — quality control benchmarks, national averages, long-run process measurements — and you want to evaluate whether a new sample is consistent with them.