The freshly released MySQL 8.0 includes a data dictionary, which makes MySQL much more reliable. Thanks to this features, we don't have any '.frm' files, and querying the information_schema is 30x to 100x faster than previous versions.
One drawback of the implementation is that the data dictionary tables are hidden by design.
While the reason is fully understandable (they don't want to commit on an interface that may change in the future) many curious users are disappointed, because openness is the basis of good understanding and feedback.
The problem to access the dictionary tables can be split in three parts:
- Finding the list of tables; …