Hello Mitch,
All the changes that you make to the table from ‘Alter Table’ option can be viewed in the query format even before committing/saving the changes in the ‘SQL Preview’ tab. You may either save or revert the changes made to the table also. You may refer the below image,
SQL Preview.png
Instead, you may also use the ‘Schema Synchronization Tool’ to sync the changes in the table structure.
Regards,
Sibin