crowdAI/crowdai

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doc/technical/archived_migrations/20180605180520_add_missing_indexes.rb

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class AddMissingIndexes < ActiveRecord::Migration[5.2]
  def change
       add_index :follows, [:followable_id, :followable_type]
       add_index :submissions, :challenge_round_id
       add_index :votes, [:votable_id, :votable_type]
  end
end