Add notification_email to NotificationSetting

db/migrate/20190327163904_add_notification_email_to_notification_settings.rb

+# frozen_string_literal: true
+
+class AddNotificationEmailToNotificationSettings < ActiveRecord::Migration[5.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def change
+    add_column :notification_settings, :notification_email, :string
+  end
+end

db/schema.rb

@@ -1516,6 +1516,7 @@ ActiveRecord::Schema.define(version: 20190527194900) do
     t.boolean "success_pipeline"
     t.boolean "push_to_merge_request"
     t.boolean "issue_due"
+    t.string "notification_email"
     t.index ["source_id", "source_type"], name: "index_notification_settings_on_source_id_and_source_type", using: :btree
     t.index ["user_id", "source_id", "source_type"], name: "index_notifications_on_user_id_and_source_id_and_source_type", unique: true, using: :btree
     t.index ["user_id"], name: "index_notification_settings_on_user_id", using: :btree