view db/migrate/20091017213027_add_missing_indexes_to_comments.rb @ 671:9fabf0da3b09 live

Select only the columns named in the GROUP BY clause, fixing #289

class AddMissingIndexesToComments < ActiveRecord::Migration
  def self.up
    add_index :comments, [:commented_id, :commented_type]
    add_index :comments, :author_id
  end

  def self.down
    remove_index :comments, :column => [:commented_id, :commented_type]
    remove_index :comments, :author_id
  end
end