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20170507141759_optimize_index_subscriptions.rb 371 B

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  1. class OptimizeIndexSubscriptions < ActiveRecord::Migration[5.0]
  2. def up
  3. add_index :subscriptions, [:account_id, :callback_url], unique: true
  4. remove_index :subscriptions, [:callback_url, :account_id]
  5. end
  6. def down
  7. add_index :subscriptions, [:callback_url, :account_id], unique: true
  8. remove_index :subscriptions, [:account_id, :callback_url]
  9. end
  10. end