Speaking in Denver

Following a heavy schedule in the last month speaking in Tokyo , Beijing, Manila and Auckland it is nice to be on home soil for upcoming speaking. I will be in Denver, Colorado for RMOUG 2012 from February 14-16, 2012 where I will be speaking about the essentials of MySQL security.

I hope to also organize another presentation in the area for the local MySQL users group. More to follow.

And a friendly reminder, the annual MySQL conference is on again, same place (Santa Clara), same dates (April 10-12), same great speakers (too many to say), just a new primary sponsor. Why not submit a paper to present. Call for papers is still open, closing on December 5. More information at Percona Live MySQL Conference & Expo 2012.

Tagged with: Databases MySQL

Producing Skewness statistics with SQL

Producing Skewness statistics with SQL

Skewness measures the asymmetry of a distribution. A perfectly symmetric distribution has a skewness of zero. A positive skew (right-skewed) means the tail extends to the right — a small number of high values pull the mean above the median.

Exploring the vsql-ai extension

Exploring the vsql-ai extension

The vsql-ai extension adds AI prompt capabilities and text embeddings directly in SQL queries, with support for Anthropic Claude , Google Gemini , OpenAI ChatGPT , or a local LLM such as Ollama .

Producing Chi-Squared statistics with SQL

Producing Chi-Squared statistics with SQL

The Chi-Squared test is one of the most widely used statistical tests for categorical data. It comes in two flavors: the goodness-of-fit test asks whether an observed frequency distribution matches an expected one, while the test of independence asks whether two categorical variables are associated with each other.