class AddIsQuoteToTopicLinks < ActiveRecord::Migration def up add_column :topic_links, :quote, :boolean, default: false, null: false # a primitive backfill, eventual rebake will catch missing execute " UPDATE topic_links SET quote = true WHERE id IN ( SELECT l.id FROM topic_links l JOIN posts p ON p.id = l.post_id JOIN posts lp ON l.link_post_id = lp.id WHERE p.raw LIKE '%\[quote=%post:' || lp.post_number::varchar || ',%topic:' || lp.topic_id::varchar || '%\]%\[/quote]%' )" end def down remove_column :topic_links, :quote end end