1class AddMissingIndexes < ActiveRecord::Migration
 2  def change
 3    add_index :creations, :user_id
 4    add_index :creations_categories, [:category_id, :creation_id]
 5    add_index :creations_categories, [:creation_id, :category_id]
 6    add_index :taggings, :tagger_id
 7    add_index :avatars, :user_id
 8    add_index :comments, :parent_id
 9    add_index :comments, [:commentable_id, :commentable_type]
10    add_index :favorites, :user_id
11    add_index :favorites, :creation_id
12    add_index :tutorials, :user_id
13    add_index :users_interests, [:interest_id, :user_id]
14  end
15end