Promote MySQL Table Partition to Table
Yes, a PARTITION is a TABLE.  However, it takes some special commands to turn a partition into a table or vice versa.
See &quot;transportable tablespaces&quot; and FLUSH TABLES ptable FOR EXPORT; ALTER TABLE ptable DISCARD TABLESPACE; ALTER TABLE ptable IMPORT TABLESPACE.  The details are different between MySQL 5.6 and 5.7+.
http://mysql.rjweb.org/doc.php/partitionmaint#use_cases_for_partitioning has links to a few places that discuss the techniques.