ash_admin/priv/repo/migrations/20210315182310_migrate_resources1.exs

defmodule Demo.Repo.Migrations.MigrateResources1 do
  @moduledoc """
  Updates resources based on their most recent snapshots.

  This file was autogenerated with `mix ash_postgres.generate_migrations`
  """

  use Ecto.Migration

  def up do
    create table(:users, primary_key: false) do
      add :id, :binary_id, null: false, default: fragment("uuid_generate_v4()"), primary_key: true
      add :representative, :boolean
      add :last_name, :text
      add :first_name, :text
    end

    create unique_index(:users, [:first_name, :last_name],
             name: "users_representative_name_unique_index",
             where: "representative = true"
           )

    alter table(:users) do
      add :admin, :boolean, default: false
    end

    create table(:tickets, primary_key: false) do
      add :id, :binary_id, null: false, default: fragment("uuid_generate_v4()"), primary_key: true
      add :subject, :text, null: false
      add :status, :text, null: false
      add :response, :text
      add :representative_id, references(:users, type: :binary_id, column: :id)
      add :reporter_id, references(:users, type: :binary_id, column: :id)
      add :description, :text
    end
  end

  def down do
    drop table(:tickets)

    alter table(:users) do
      remove :admin
    end

    drop_if_exists unique_index(:users, [:first_name, :last_name],
                     name: "users_representative_name_unique_index"
                   )

    drop table(:users)
  end
end