Full table scans can be problematic for performance. Certainly if the scanned tables are large. The worst case is when full table scans are involved in joins and particularly when the scanned table is not the first one (this was…
Today, the book I would like to recommend is Efficient MySQL Performance – Best Practices and Techniques, Daniel Nichter, O’Reilly, 2021. I participated (just a bit) in the writing of this book as technical reviewer with Vadim and Fipar. I…
This fall, from October 16 to 20, the MySQL Summit will be held in La Vegas. This conference is totally dedicated to your favorite dolphin database and is part of Oracle CloudWorld. MySQL Summit will bring together a large community…
This is the second article of the series dedicated to MySQL trending. As I wrote before, understanding your workload and seeing the evolution of it over time can help anticipating problems and work on solutions before the breakdown. This article…
This is the first article of a new blog series related to MySQL books. Let’s start with MySQL Workshop, a practical guide to working with data and managing databases with MySQL written by Thomas Pettit and Scott Cosentino. The editor…
We are getting many requests for migration from MariaDB to MySQL. Here is a quick guide and steps to follow: On the MariaDB server: Create a logical dump of MariaDB (using MySQL Shell) Create a dedicated user for replication [optional]…
In a previous post, I explained how you can collect and plot metrics using MySQL Shell. This is a new series of article where I will explain how to read and understand some of the generated graphs. Understanding your workload…
When it’s time for a new MySQL release, it’s also time to thank our contributors ! Released on April 26th, MySQL 8.0.29 contains several contributions from our awesome Community and on behalf of the entire MySQL Team, I would like…
I could have also called this article When Pandas meet Dolphins in MySQL Shell. Some time ago, I wrote a post related on how to collect initial relevant data when trying to seek help for MySQL. Since then, the MySQL…
Recently we saw how we can catch audit information using invisible column, JSON data type and triggers in MySQL 8.0: Poorman’s MySQL table audit information Poorman’s MySQL table audit information – part 2 Of course, the creation of these triggers…
I really enjoyed to dig into the solution I described yesterday in this post, to generate table audit information using invisible columns and triggers. In this post, I will focus only on the solution using a JSON column to store…
Today, somebody asked me how he could track the creation of a record (who created it and when) and who and when it was last modified. Usually, this is performed in a different table, called audit table. In MySQL you…