[dijit]

> The changes you mention like llvm, CTE de-mat and such: Were these for "free" or did you have to adapt your code?

The changes were made "for-free" as in no code needed to be changed, but when changing query planners caution should be heeded..

I remember a time where a mysql 5.6->5.7 upgrade crippled our entire monitoring stack:

https://bugs.mysql.com/bug.php?id=87164

https://dba.stackexchange.com/questions/121841/mysql-5-7-inn...