That would seem like a good idea at first. However if your product is deployed to hundreds of customers each being at various versions of the DB, what happens?

That would seem like a good idea at first. However if your product is deployed to hundreds of customers each being at various versions of the DB, what happens? Ex: Customer A is at v10, customer B at v20 and customer C at v30. Then you decide for some reason that patch v11 needs to be deployed. What happens to Customers B and C? Do you create 2 new patch, i.e v11 and v40 which have similar changes?