priv/repo/migrations/20221219082326_create_player.exs


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defmodule Chessh.Repo.Migrations.CreatePlayer do
  use Ecto.Migration

  def change do
    execute "CREATE EXTENSION IF NOT EXISTS citext", ""

    create table(:players) do
      add :username, :citext, null: false
      add :hashed_password, :string, null: false
      timestamps()
    end

    create unique_index(:players, [:username])
  end
end