Reading the right MySQL Manual

I learned an extremely valuable lesson today on a client site. It’s important that users of MySQL read the right version of the manual for the product they are using. It’s very easy to just goto http://dev.mysql.com/doc/ which is what I type in directly and browser the manual. While the MySQL Manual has separate sections for 4.x, 5.0, 5.1 etc, the 5.0 Manual for example reflects the most current version of MySQL 5.0. You may not be running the most current version, infact most production systems rarely run the current version.

My specific case was with Connector/J (JDBC) Reference of 5.0.4. The manual pages reflects the new 5.0.5 or todays’ 5.0.6 release and a particular default is now a different value. With Connector/J the docs are bundled with the version. The MySQL Community Server product does not bundle the manual, and I don’t know where to view instances of the MySQL manual for each specific dot release!

Tagged with: Databases MySQL

Speaking at COSCUP 2026 — Planning your upgrade to MySQL 9.7

Speaking at COSCUP 2026 — Planning your upgrade to MySQL 9.7

I am excited to be speaking at COSCUP 2026 in Taipei, Taiwan on August 8th and 9th. COSCUP (Conference for Open Source Coders, Users and Promoters) is one of the largest open source conferences in Asia, and it is always a privilege to present to the engaged and technically sharp community there.

Producing Two Sample T-Test statistics with SQL

Producing Two Sample T-Test statistics with SQL

The two sample t-test for equal variance is a statistical test to determine if the means of two groups are different enough that the difference is likely caused by some underlying difference, rather than random chance.

Building your first VillageSQL Extension with AI skills

Building your first VillageSQL Extension with AI skills

This is a technical walkthrough of the vsql-extension-builder recently released May 28 at Percona Live Bay Area 2026 and found at https://github.com/villagesql/villagesql-skills . Highlights Install VillageSQL pre-built binary first Install SDK with pre-built binary second Install the skill Run it with your AI tool The output can be found at https://github.