July 29, 2014

Avoiding auto-increment holes on InnoDB with INSERT IGNORE

Are you using InnoDB tables on MySQL version 5.1.22 or newer? If so, you probably have gaps in your auto-increment columns. A simple INSERT IGNORE query creates gaps for every ignored insert, but this is undocumented behaviour. This documentation bug is already submitted. Firstly, we will start with a simple question. Why do we have […]

Keynote Speakers for Percona Live MySQL Conference 2014 and $5 Expo Only Passes

The Percona Live MySQL Conference 2014 in Santa Clara, California is just around the corner: April 1-4. There is a tremendous amount of activity leading up to the conference, some of which I will highlight here. Percona Live MySQL Conference 2014 Keynote Speakers I am extremely pleased with the keynote speakers we can now announce. […]

Percona Live London 2013 and Percona Live MySQL Conference & Expo 2014

Thanks to everyone who participated in Percona Live London 2013. We had a great event with nearly 20% higher attendance versus 2012. This year’s conference featured participation by representatives from Oracle including a compelling keynote by Tomas Ulin. The conference featured 10 tutorial sessions on Monday and 4 keynotes and 30 breakout sessions on Tuesday. […]

InnoDB Full-text Search in MySQL 5.6: Part 2, The Queries!

This is part 2 in a 3 part series. In part 1, we took a quick look at some initial configuration of InnoDB full-text search and discovered a little bit of quirky behavior; here, we are going to run some queries and compare the result sets. Our hope is that the one of two things […]

Amazon Web Services and HP Keynotes at Percona Live MySQL Conference and Expo

We are very pleased to announce the addition of HP and Amazon Web Services as keynote speakers for the Percona Live MySQL Conference and Expo which is April 22-25 in Santa Clara, California. Amazon Web Services is sending Simone Brunozzi, Senior Technology Evangelist, who will speak on “Databases in the Cloud: Present and Future.” HP […]

On Character Sets and Disappearing Tables

The MySQL manual tells us that regardless of whether or not we use “SET FOREIGN_KEY_CHECKS=0″ before making schema changes, InnoDB will not allow a column referenced by a foreign key constraint to be modified in such a way that the foreign key will reference a column with a mismatched data type. For instance, if we […]

Percona Live MySQL Conference & Expo Was A Great Event

Thanks to all of our sponsors, speakers, speaker selection committee, event staff, and especially the attendees for making last week’s conference a resounding success. With over a thousand people, the event made a good comeback after last year’s event, but more importantly, the mood was strongly optimistic. I think a lot of people arrived with […]

Dot-Org Pavilion at the Percona Live MySQL Conference

This is a cross-post from my personal blog. Are you involved with an open-source project that’s interesting to MySQL users, such as Nginx, PHPMyAdmin, Drupal, Jenkins, PHP, and so on? Percona just published the application form for dot-org groups to have a free expo hall booth in the Percona Live MySQL Conference in April. Please […]

When would you use SAN with MySQL ?

One question which comes up very often is when one should use SAN with MySQL, which is especially popular among people got used to Oracle or other Enterprise database systems which are quite commonly deployed on SAN. My question in such case is always what exactly are you trying to get by using SAN ?

MySQL Public Worklog and Community Focus

MySQL made some tasks from their internal task tracking tool – Worklog a while back. I just have not look at it besides checking Maria related tasks until couple of days ago as Jay announced new Forge going live. Check it out – there are a lot of nice ideas out where. I can find […]