During the early stages of my career, I was captivated by the theories and concepts surrounding foreign keys and how they empowered us to maintain data integrity. However, in practical application, I have found them to be quite challenging to manage. I am sure you’re a champion DBA, but I keep my distance from foreign keys.
With that short story as a background, this post aims to address the dilemma that arises when utilizing the pt-online-schema-change tool on tables that contain foreign keys.
We already know what one of the most used Percona tools pt-online-schema-change is and how pt-online-schema-change handles foreign keys.
When utilizing the pt-online-schema-change tool to alter a table, such as …[Read more]