pleroma/priv/repo/migrations/20191026190712_set_not_null_for_conversation_participation_recipient_ships.exs

defmodule Pleroma.Repo.Migrations.SetNotNullForConversationParticipationRecipientShips do
  use Ecto.Migration

  # modify/3 function will require index recreation, so using execute/1 instead

  def up do
    execute("ALTER TABLE conversation_participation_recipient_ships
    ALTER COLUMN user_id SET NOT NULL,
    ALTER COLUMN participation_id SET NOT NULL")
  end

  def down do
    execute("ALTER TABLE conversation_participation_recipient_ships
    ALTER COLUMN user_id DROP NOT NULL,
    ALTER COLUMN participation_id DROP NOT NULL")
  end
end