leadchat/db/migrate/20231219073832_add_last_activity_at_to_notifications.rb

class AddLastActivityAtToNotifications < ActiveRecord::Migration[7.0]
  def change
    add_column :notifications, :last_activity_at, :datetime, default: -> { 'CURRENT_TIMESTAMP' }
    add_index :notifications, :last_activity_at
  end
end