I've recently moved some MySQL hosting from a virtual server at Digital Ocean to Google's Cloud SQL hosting. It took several goes to import the database and I didn't notice until afterwards that each time I deleted a database in the Google console it didn't actually reset the storage space that database had used.
I've not got about 40GB of storage but I know the database is only about 10, is there some way to clear the space or do I need to start again and import the database into a fresh db setup?