There are limits on the single table dimension in ApsaraDB for RDS for MySQL:
The valid largest dimension of a single table is usually subject to the limits of the file dimension in the operating system, instead of the limits of the MySQL mechanism.
Since the ApsaraDB for RDS instance can be up to 1 TB in size, the single table can be up to a little smaller than 1 TB (because of some metadata). If MySQL instances in ApsaraDB for RDS have multiple tables, the total sum of the table dimensions cannot exceed 1 TB.