redmine/db/migrate/20091123212029_add_default_done_ratio_to_issue_status.rb

class AddDefaultDoneRatioToIssueStatus < ActiveRecord::Migration[4.2]
  def self.up
    add_column :issue_statuses, :default_done_ratio, :integer
  end

  def self.down
    remove_column :issue_statuses, :default_done_ratio
  end
end