Mix.Tasks.Ecto.Gen.Migration
Generates a migration for the given repository.
mix ecto.gen.migration MyApp.Repo add_posts_table
By default, the migration will be generated to the
"priv/repo/migrations" directory of the current application
but it can be configured by specify the :priv
key under
the repository configuration.
Command line options
--no-start
- do not start applications