discourse/db/migrate/20140801052028_fix_incoming...

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# frozen_string_literal: true
class FixIncomingLinks < ActiveRecord::Migration[4.2]
def up
execute "DROP INDEX incoming_index"
add_column :incoming_links, :post_id, :integer
remove_column :incoming_links, :updated_at
remove_column :incoming_links, :url
execute "UPDATE incoming_links l SET post_id = (
SELECT p.id FROM posts p WHERE p.topic_id = l.topic_id AND p.post_number = l.post_number
)"
execute "DELETE FROM incoming_links WHERE post_id IS NULL"
change_column :incoming_links, :post_id, :integer, null: false
add_index :incoming_links, :post_id
end
def down
raise ActiveRecord::IrreversibleMigration
end
end