Really, you've always had to be careful with MySQL. It really was the PHP of RDBMSs.
The silent "SHOW WARNINGS" system, nonsense dates like Feb 31, implicit type conversions like converting strings to 0s, non-deterministic group by enabled by default, index corruption, etc.
The silent "SHOW WARNINGS" system, nonsense dates like Feb 31, implicit type conversions like converting strings to 0s, non-deterministic group by enabled by default, index corruption, etc.