# frozen_string_literal: true class ArchiveSystemMessagesWithNoReplies < ActiveRecord::Migration[4.2] def up # backdate archival of system messages send on behalf of site_contact_user execute <<SQL INSERT INTO user_archived_messages (user_id, topic_id, created_at, updated_at) SELECT p.user_id, p.topic_id, p.created_at, p.updated_at FROM posts p JOIN topics t ON t.id = p.topic_id LEFT JOIN user_archived_messages um ON um.user_id = p.user_id AND um.topic_id = p.topic_id WHERE t.subtype = 'system_message' AND t.posts_count = 1 AND t.archetype = 'private_message' AND um.id IS NULL AND p.user_id IS NOT NULL AND p.topic_id IS NOT NULL AND p.post_number = 1 SQL end def down end end