Re:Migrating Facebook to MySQL 8.0
by PeterZaitsev on Thursday July 22, 2021 @03:56PM
(#27923516)
MySQL does not follow semantic version and there have been features introduced in minor released including some incompatible changes as you can see for example https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-24....
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That's still a patch release not a minor release.
If it does not follow semantic versions, it is just a third-level version number. It's like Linux's 2.6.x series.