db/migrate/064_indices_for_annotations.rb


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class IndicesForAnnotations < ActiveRecord::Migration
    def self.up
        add_index :info_request_events, :created_at
        add_index :info_request_events, :info_request_id
    end

    def self.down
        remove_index :info_request_events, :created_at
        remove_index :info_request_events, :info_request_id
    end
end