Like all new MySQL versions, the following features are considered obsolete in MySQL 8.0, and may be removed in a future new release. When alternatives are displayed, applications must be updated to use them.
Since MySQL 8.0.4, the validate_password plugin has been re-enabled for use in the server component framework, and although it is still available, there are plans for it to be removed from future versions of MySQL.
The ALTER TABLESPACE and DROP TABLESPACE ENGINE clause will be removed from future releases.
The function JSON_MERGE () is removed from MySQL 8.0.3. You should use JSON_MERGE_PRESERVE () instead.
