```ruby
Sequel.migration do
  change do
    create_table(:testset) do
      serial :set, primary_key: true
      text :info, unique: true, null: false
      text :testdb, null: false
      text :testuser, null: false
      text :testhost, null: false
      text :testport, null: false
      text :settings
      foreign_key :database_uuid, :databases, type: :uuid
    end
  end
end```

Change testset migration to alter table not create it
user
```ruby
Sequel.migration do
  change do
    alter_table(:testset) do
      add_foreign_key :database_uuid, :databases, type: :uuid
    end
  end
end
```
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