12 lines
		
	
	
	
		
			371 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
		
		
			
		
	
	
			12 lines
		
	
	
	
		
			371 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
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								class OptimizeIndexSubscriptions < ActiveRecord::Migration[5.0]
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								  def up
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								    add_index :subscriptions, [:account_id, :callback_url], unique: true
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								    remove_index :subscriptions, [:callback_url, :account_id]
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								  end
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								  def down
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								    add_index :subscriptions, [:callback_url, :account_id], unique: true
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								    remove_index :subscriptions, [:account_id, :callback_url]
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								  end
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								end
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