Release Notes for 4.2.0 4.2.0 Total issues resolved: 0 Total pull requests resolved: 6 Total contributors: 3 CI 6537: CI: remove duplicate key thanks to @derrabus MariaDB,MySQL,New Feature,Schema Introspection,Schema Management,Types 6536: Implement an EnumType for MySQL/MariaDB thanks to @derrabus Connecting,Connections,New Feature,PDO 6532: Leverage the new PDO subclasses thanks to @derrabus New Feature,PostgreSQL,Schema Introspection 6516: Passive support for partitioned tables on Postgres thanks to @nikophil Cache,Improvement,Results 6510: Invalidate old query cache format thanks to @derrabus Cache,New Feature,Results 6504: Handle cached result column names and rows separately thanks to @morozov