Amnesia - How to add a new table to an existing database

Questions / Help
,
1

I created an mnesia database with:-

mix amnesia.create -d Database --disk

and with table schema defined in database.ex

After some tests, I want to add more tables to the same database. Can anybody tell me how to do this?

Thanks in advance.

2

Never used amneisa but looking at docs you probably created a file disk.ex I suppose.
https://hexdocs.pm/amnesia/Amnesia.Table.html#create/2

use Amnesia

defdatabase Foo do
  deftable Bar, [:id, :a], type: :bag

  deftable Baz, [:id, :a, :b] do
    def foo(self)
      42
    end
  end
end

So in that file you need to add deftable.

3

Thank you for the reply. I cant add another deftable since the DB already exist.

23:32:11.820 [notice] Application mnesia exited: :stopped
** (Amnesia.TableExistsError) Table Database already exists
(amnesia 0.2.8) lib/amnesia/table.ex:138: Amnesia.Table.create!/2
(test_app 0.1.0) lib/database.ex:18: Database.create!/1
(amnesia 0.2.8) lib/mix/amnesia.create.ex:19: Mix.Tasks.Amnesia.Create.run/1
(mix 1.14.0) lib/mix/task.ex:421: anonymous fn/3 in Mix.Task.run_task/4
(mix 1.14.0) lib/mix/cli.ex:84: Mix.CLI.run_task/2